只用一本书提高英语听力能力!重温经典名著双语阅读小编推荐:跟着纪录片学英语不背单词和语法,轻松学英语
返回列表 回复 发帖

[科技前沿] 2010-01-10&01-13 月球上的加油站

提高英语听力能力 找对方法很重要!

[科技前沿] 2010-01-10&01-13 月球上的加油站

user posted image
Pit Stops on the Moon


Space travel requires a lot of fuel; a single space shuttle launch requires almost 4 million pounds. A group of students and professors from Purdue and Penn State are exploring ways to lighten the load for future rocket missions, and they have developed a new fuel that could make it possible to stop at the Moon for a fill up. Watch this videocast to find out more.

user posted image


【电信1】 RealVideo / mp3

【电信2】 RealVideo / mp3

【网通/教育网】 RealVideo / mp3

点击进入多主题版块听写规则(新手必读)


版主提示:
一、若是自己的听写稿, 请发帖时标注'Homework'.
二、若是改稿, 请发帖时标注'on 某某人'并在修改处标红.
三、为了达到最快的下载速度,推荐使用迅雷高速下载本站音频/视频材料.

普特在线文本比较普特在线听音查字普特在线拼写检查普特文本转音频

人間の優劣は、他者との比較で決めるものではなく、自分自身の中で決定されるもの。

[Homework]2010-01-10&01-13 月球上的加油站Homework
Nowfrom the Boston Museum of Science, Sci-tech today on NECN.
“5,4, 3, 2, 1, now!”
Onsci-tech today, we just looked at the rocket that could change the future ofspace travel, the key – this rocket is powered by a new type of fuel that couldpotentially be manufactured on the moon. Joining me now from the Museum ofScience is Alex Fiorentino, our nano-technology correspondent.
“Alex,tell us about this new research – is viewers scratching their head about rocketfuel being made on the moon!”

“Well Chat, when you are, when you are dealingwith space travel, one of the biggest challenges is really fuel. En… if youthink about it - it takes a lot of fuel for me to move my car just from here toNew York. So imagine how much it really takes to move a space shuttle from theearth into outer space. It's an awful lot - it is almost 4 million pounds offuel for every space shuttle launch. Um, and so if we wanted to travel furtherand explore more of space, we need even more fuel. Some, some researchers andsome young scientists from Purdue University and Penn State University though,have started looking at this problem in a little bit of different way. Andtheir thinking is that, what if we didn't need to bring all this fuel with us?What if we could travel to the moon, refill the tank there and then just keepgoing? "

"Sounds like a great idea, but how could yourefill on the moon?"

"Ah, well, you'd really just have to use akind of fuel that's available there and that's really exactly what they did.They've created a new kind of rocket fuel that they call "ALICE". At"AL" for "aluminum" and "ICE" for"ice". And that's really all it is, it is just a mixture of ice andtiny nanoscale particles of aluminum. And if we look at some of the videos fromthe scientists, we'll see that this fuel really works. The students launch a rocketalmost 1300 feet into the air using only this ALICE as fuel. And so this is particularlyexciting because recent evidence suggests that there are significant ice onboth the moon and on mars, which could make this, this dream of a refuelingstation on the moon a reality."

"Oh that's all very interesting, ah, but,but how does this aluminum rocket fuel work?"

"Ah, well, in a sense it works the same wayas pretty much every other kind of rocket. And that is based on the principleof that for every action; there is an equal and opposite reaction. So if I takethis balloon, and I let it go, the balloon would force air erupt in thisdirection oops excuse me, in this direction, and so the balloon would fly inthat direction. So the balloon, the space shuttle, the ALICE rocket, they arereally all doing the same thing. They're forcing gases out in one direction tocreate acceleration in the other direction. The difference is that differentkinds of rockets use different reactions to force those gases out. Um, so inthe case of the space shuttle boosters, they burn a whole variety of chemicalsand they actually create an exhaust that contains almost, ah, or or hundreds oftons of hydrochloric acid, whereas the ALICE rocket burns only ice and aluminumand so its exhaust contains only hydrogen gas and aluminum oxide, which makesit a much more environmentally friendly fuel than what 's used in the spaceshuttle boosters."

" ** works with any kind of aluminum I meancould you load aluminum foil and water into a rocket and somehow ignite it andlaunch it?"

"Well that answer there is no and actuallyit's a really important point because in this case the size of the aluminum is reallyimportant. It makes a really big difference in how the aluminum reacts and infact this would be true with all kinds of materials and reactions. So to demonstratethis let's jump over and and have a little fun with these bottles of soda. Sowhat I have here on the left is a single piece of iron, and on the right I havethe same amount of iron but it's in many many tiny pieces so if I drop these bothinto the soda bottles we'll get a sense for the difference between really smallparticles and slightly larger particles. So this reaction is obviously a littlebit different than what happens on the ALICE rocket but the same principlestill holds true - that smaller particles lead to faster reactions so by usingnano-sized aluminum particles the researchers were able to make a fuel thatreacts very quickly and generates a lot of threst.

"That's amazing, how long before we mightsee this fuel being used in, ah, by NASA?"

"Ah, well, this this fuel is still at veryearly stage of development, so it'll be a little while before we see it on anysort of major space craft. But for now, it's, it's already working. Its itsperformance is as good as the fuel that's on the space shuttle or in some casesis close to as good.
Ah and it has theadded advantages of being more environmentally friendly and also possibly beingavailable on other planets. So I suspect that we might hear more about thisALICE rocket fuel in the future."


"All right. Fascinating. Alex, thanks forjoining us!"

"Thanks for have me, Chat.”
1

评分次数

  • ryansterne

立即获取| 免费注册领取外教体验课一节
Homework

Now from the Boston museum of science, Sci-tech Today on NECN

On Sci-tech today, we just look at a rocket that could change the future of space travel, the key, this rocked is powered by a new type of fuel that could potentially be manufactured on the moon. John…from the museum of science, this is Alex Fiorentino on a nano technology correspondence, Alex tell us about this new research as viewers are scratching their head by rocket fuel being made on the moon.
   
I will check, when you’re feeling with space travel, one of the biggest challenges is really fuel. If you think about it, it takes a lot of fuel for me to move my car just from here to NY, so image how much it really takes to move a space shuttle from the earth into outer space, it’s an awful lot, it’s almost 4 million pounds of fuel for every space shuttle launch. And so if we want to travel further and explore more of the space, we need even more fuel. Some researchers and some young scientists from Purdue University and Penn State University, though, have started to think about this problem in a little bit different way, and their thinking is that what if we didn’t need to bring all these fuels with us, what if we could travel to the moon, refill the tanks there and keep going.

Sounds like a great idea, but how could you refill on the moon.

Er, well, you could really use a kind of fuel that is available there, and that’s really exactly what they did. They’ve created a new kind of fuel that they called ALICE--er, AL for aluminum and ICE for ice. And that’s really all what it is, it’s just a kind of mixture of ice and little tiny marrow particles of aluminum. And if we look at some of the video from these scientists, you’ll see that this fuel really works. The students launched a rocket almost 1300 feet into the air using only this ALICE as fuel. And also it’s particular exciting because resent evidence suggest that there’s significant ice on both the moon and on Mars, which could make this dream of refilling station on the moon of reality.

Well, that’s all very interesting, but how does this aluminum rocket fuel work

Well, in science it works the same way as pretty much as every other kind of rocket, and that’s the based on the principle that for every action, there’s an equal one opposite reaction. So if I take this balloon and I would let it go, the balloon will force air out in this direction and so the balloon will fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they really all doing the same, they’re all forcing gases out in one direction to create acceleration in another direction. The difference is that different rockets use different reactions to force those gases out.
So in the case of the space shuttle boosters, they burn an …of chemicals and it actually creates an exhaust that contains almost or hundreds of tons of hydrochloric acid, while as ALICE rocket burns only ice and aluminum, so its exhaust contains only hydrogen gas and aluminum oxide which makes it a much more environmentally friendly fuel than what is used in a space shuttle booster.
  
Could it use any kind of aluminum, I mean, could you load aluminum over there and water in a rocket and somehow… launch it

The answer is no, it’s a really important point, because the size of the aluminum is really important, it makes a real big difference in how the aluminum reacts, and in fact, this would be true with all kinds of materials and reactions. So to demonstrate this, let’s jump over, and have a little fun of these bottles of soda. So what I have here on the left is a single piece of iron, and the right, I have the same amount of iron, but its in many many of tiny pieces. So if I drop these both into the soda bottles, we’ll get a sense for the difference between the really small particles and slightly larger particles. So this reaction is obviously a little bit different than what happens in a real ALICE rocket, but the same principle still holds true, that smaller particles leads to faster reactions. So by using nano-size aluminum particles, the researchers will be able to make a fuel that reacts very quickly and generates a lot of thrust

That’s amazing, how long before we might see this fuel being used by NASA   

Well, this fuel is still at a very early stage of its development, so it will be a while before we see it on any sort of major space craft. But for now, it’s already working, it’s performing, it as good as the fuel that’s on a space shuttle or in some cases of close good. And it has the added advantage as being more environmentally friendly, and, also possible be developed in some other plans. So I suspect that we might hear more about this ALICE rocket fuel in the future

Oh, right, fascinating, Alex, thanks for joining us

Thanks for having me here
1

评分次数

再吱声我就是耗子
实现无障碍英语沟通
Home work

Now, from the Boston Museum of Science, Scitech Today on NECN. 5, 4, 3, 2, 1, now. On Scitech today, we just look at the rocket that could change the future of space travel, the key. This rocket is powered by a new type of fuel that could potentially be manufactured on the moon. Joining me now from the Museum of Science Alex **, our Nanotechnology correspondent. Alex, tell us about this new research as viewer is scratching their head about, rocket fuel being made on the moon. Oh, well, Chad, when you are feeling with space travel, one of the biggest challenges is really fuel. If you think about it, it takes a lot of fuel for me to move my car just from here to New York. So imagine how much it really takes to move a space shuttle from the earth into outer space. It’s a ** line. It’s almost four million pounds of fuel for every space shuttle watch. And so if we want it to travel further and explore more space, we need even more fuel. Some researchers and some young scientists from ** university and ** university though, have started looking at this problem in a little bit of different way. And their thinking is that what if we didn’t need to bring all these fuel with us, what if we could travel on the moon, refuel take there and then just keep going. Sounds like a great idea, but how could you refuel on the moon? Well, you really just have to use a kind of fuel that’s available there. And that’s really exact what they did. They’ve created a new kind of rocket fuel that they called ALICE. Al for aluminum, and ICE for ice. And that’s really all it is. It’s just a mixture of ice and tiny nano-scaled particles of aluminum. And if we look at some of the videos from the scientists, we will see that this fuel really works. The students launched a rocket almost 1300 feet into the air using only this ALICE as fuel. And Chad, this is particularly exciting, because recent evidence suggests that there are significant ice both in our moon and our Mars, which could make this dream of our refueling station on the moon a reality. Oh, that’s over interesting. But how does this aluminum rocket fuel work? Ah, well, in a sense, it works the same way as pretty much every other kind of rocket. And that it is based on a principle that for every action. There is an equal on opposite, reaction. So if I take this balloon and I will let it go. The balloon will force air out in this direction. Whoops, excuse me, in this direction. And so the balloon will fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they are really are doing, they are forcing gases out in one direction to create acceleration in the other direction. The difference is that different kinds of rockets use different reactions to force those gases out. So, in a case of the space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust that contains almost or hundreds of tons of hydro **. While the ALICE rocket burns only ice and aluminum and so its exhaust contains only hydrogen gas and aluminum **, which makes it a much more environmentally friendly fuel than what’s used in a space shuttle boosters. Do these work with any kinds of aluminum, I mean could you load an aluminum fired and ** into a rocket and somehow ignite it and launch it. Well, that answer that is no, and actually it’s a really important point, because in this case the size of the aluminum is really important. It makes a really big difference in how the aluminum reacts. And in fact this would be true with all kinds of materials and reactions. So, to demonstrate this, ** jump over and have a little fun with this bottles of soda. So what I have here on the left is a single piece of iron, and on the right I have the same amount of iron, but it’s in many many tiny pieces. So if I drop this ** into the soda bottles, we will get a sense for the difference between really small particles and slightly larger particles. So, this reaction is obviously a little bit different than what happens in ALICE rocket, but the same principle still holds true that smaller particles lead to faster reactions. So by using nano-sized aluminum particles, the researchers were able to make a fuel that reacts very quickly and generate a lot of thrust. That’s amazing. How long before we may see this fuel being used by NASA? Well, this fuel is still at a very early stage of development. So, being a little while before we see it on any sort of major spacecraft. But for now, it’s already working, its performance is as good as the fuel that on our space shuttle or in some cases close to its good. And it has the added advantage of being more environmentally friendly and also possibly being developed on other planets. So I suspect that we might hear more about this ALICE rocket fuel in the future. All right. Fascinating, Alex. Thanks for joining us. Thanks for having me, Chad.
1

评分次数

明夕何夕   君已陌路
口译专员推荐—>口译训练软件IPTAM口译通
Now from the Boston Museum of Science, Sci-tech today on NECN.
“5, 4, 3, 2, 1, now!”
On sci-tech today, we just looked at the rocket that could change the future of space travel, the key – this rocket is powered by a new type of fuel that could potentially be manufactured on the moon. Joining me now from the Museum of Science is Alex Fiorentino, our nano-technology correspondent.
“Alex, tell us about this new research – is viewers scratching their head about rocket fuel being made on the moon!”

“Well Chat, when you are, when you are dealing with space travel, one of the biggest challenges is really fuel. En… if you think about it - it takes a lot of fuel for me to move my car just from here to New York. So imagine how much it really takes to move a space shuttle from the earth into outer space. It's an awful lot - it is almost 4 million pounds of fuel for every space shuttle launch. Um, and so if we wanted to travel further and explore more of space, we need even more fuel. Some, some researchers and some young scientists from Purdue University and Penn State University though, have started looking at this problem in a little bit of different way. And their thinking is that, what if we didn't need to bring all this fuel with us? What if we could travel to the moon, refill the tank there and then just keep going? "

"Sounds like a great idea, but how could you refill on the moon?"

"Ah, well, you'd really just have to use a kind of fuel that's available there and that's really exactly what they did. They've created a new kind of rocket fuel that they call "ALICE". At"AL" for "aluminum" and "ICE" for"ice". And that's really all it is, it is just a mixture of ice and tiny nano scale particles of aluminum. And if we look at some of the videos from the scientists, we'll see that this fuel really works. The students launch a rocketal most 1300 feet into the air using only this ALICE as fuel. And so this is particularly exciting because recent evidence suggests that there are significant ice on both the moon and on mars, which could make this, this dream of a refueling station on the moon a reality."

"Oh that's all very interesting, ah, but, but how does this aluminum rocket fuel work?"

"Ah, well, in a sense it works the same way as pretty much every other kind of rocket. And that is based on the principle of that for every action; there is an equal and opposite reaction. So if I take this balloon, and I let it go, the balloon would force air erupt in this direction,oops excuse me, in this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they are really all doing the same thing. They're forcing gases out in one direction to create acceleration in the other direction. The difference is that different kinds of rockets use different reactions to force those gases out. Um, so in the case of the space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust that contains almost, ah, or or hundreds of tons of hydrochloric acid, whereas the ALICE rocket burns only ice and aluminum and so its exhaust contains only hydrogen gas and aluminum oxide, which make sit a much more environmentally friendly fuel than what 's used in the space shuttle boosters."

" though it works with any kind of aluminum I mean could you load aluminum foil and water into a rocket and somehow ignite it and launch it?"

"Well that answer there is no and actually it's a really important point because in this case the size of the aluminum is really important. It makes a really big difference in how the aluminum reacts and in fact this would be true with all kinds of materials and reactions. So to demonstrate this let's jump over and and have a little fun with these bottles of soda. So what I have here on the left is a single piece of iron, and on the right I have the same amount of iron but it's in many many tiny pieces so if I drop these both into the soda bottles we'll get a sense for the difference between really small particles and slightly larger particles. So this reaction is obviously a little bit different than what happens on the ALICE rocket but the same principle still holds true - that smaller particles lead to faster reactions so by using nano-sized aluminum particles the researchers were able to make a fuel that reacts very quickly and generates a lot of thrust.

"That's amazing, how long before we might see this fuel being used in, ah, by NASA?"

"Ah, well, this this fuel is still at very early stage of development, so it'll be a little while before we see it on any sort of major space craft. But for now, it's, it's already working. Its its performance is as good as the fuel that's on the space shuttle or in some cases is close to as good.
Ah and it has the added advantages of being more environmentally friendly and also possibly being available on other planets. So I suspect that we might hear more about this ALICE rocket fuel in the future."

"All right. Fascinating. Alex, thanks for joining us!"

"Thanks for have me, Chat.”
1

评分次数

Homework

Now from the Boston museum of science, Sci-tech Today on NECN
"5,4,3,2,1,now!"

On Sci-tech today, we just look at the rocket that could change the future of space travel, the key, this rocket , powered by a new type of fuel that could potentially be manufactured on the moon. Join me now from the museum of science with Alex / , our nano technology correspondent, "Alex tell us about this new research as viewers are scratching their head about rocket fuel being made on the moon."
   
"Well, Chat, when you’re dealing with space travel, one of the biggest challenges is really fuel. If you think about it, it takes a lot of fuel for me to move my car just from here to New York. So image how much it really takes to move a space shuttle from the earth into outer space, it’s an awful lot, it’s almost 4 million pounds of fuel for every space shuttle launch. And so if we want to travel further and explore more of the space, we need even more fuel. Some researchers and some young scientists from Purdue University and Penn State University, though, have started to look at this problem in a little bit different way, and their thinking is that what if we didn’t need to bring all these fuels with us, what if we could travel to the moon, refill the tanks there and keep going?"

"Sounds like a great idea, but how could you refill on the moon?"

" well, you could really have to use a kind of fuel that is available there, and that’s really exactly what they did. They’ve created a new kind of rocket fuel that they called ALICE. AL for aluminum and ICE for ice. And that’s really all what it is, it’s just a kind of mixture of ice and little tiny nano-scale particles of aluminum. And if we look at some of the video from these scientists, you’ll see that this fuel really works. The students launched a rocket almost 1300 feet into the air ,using only this ALICE as fuel. And also it’s particular exciting because resent evidence suggests that there’s significant ice on both the moon and on Mars, which could make this dream of refilling a station on the moon a reality."

"Well, that’s all very interesting, but how does this aluminum rocket fuel work?'

"Well, in science, it works the same way as pretty much as every other kind of rocket, and that’s the based on the principle that for every action.There’s an equal one opposite reaction. So if I take this balloon and I would let it go, the balloon will force air out in this direction so the balloon will fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they're really all doing the same, they’re all forcing gases out in one direction to create acceleration in another direction. The difference is that different rockets use different reactions to force those gases out. So in the case of the space shuttle boosters, they burn a whole variety of chemicals and it actually creates an exhaust that contains almost or hundreds of tons of hydrochloric acid, while as ALICE rocket burns only ice and aluminum, so its exhaust contains only hydrogen gas and aluminum oxide which makes it a much more environmentally friendly fuel than what is used in a space shuttle boosters. "
  
"Could it use any kind of aluminum, I mean, could you load aluminum over there and water in a rocket and somehow ignite and launch it ?"

"The answer is no, it’s a really important point, because the size of the aluminum is really important, it makes a real big difference in how the aluminum reacts, and in fact, this would be true with all kinds of materials and reactions. So to demonstrate this, just jump over, and have a little fun of these bottles of soda. So what I have here on the left is a single piece of iron, and the right, I have the same amount of iron, but its in many many of tiny pieces. So if I drop these both into the soda bottles, we’ll get a sense for the difference between the really small particles and slightly larger particles. So this reaction is obviously a little bit different than what happens in a real ALICE rocket, but the same principle still holds true, that smaller particles leads to faster reactions. So by using nano-size aluminum particles, the researchers will be able to make a fuel that reacts very quickly and generates a lot of thrust ."

"That’s amazing, how long before we might see this fuel being used by NASA? "  

"Well, this fuel is still at a very early stage of its development, so it will be a while before we see it on any sort of major space craft. But for now, it’s already working, it’s performing, it as good as the fuel that’s on a space shuttle or in some cases of close good. And it has the added advantage as being more environmentally friendly, and, also possible be developed in some other plans. So I suspect that we might hear more about this ALICE rocket fuel in the future."

"Oh, right, fascinating, Alex, thanks for joining us."

"Thanks for having me ,Chat ."
1

评分次数

on edle

2010年1月12日 星期二 〖农历 己丑 牛年 十一月廿八〗

Now from the Boston Museum of Science, Sci-tech today on NECN.
“5,4, 3, 2, 1, nought!”
On sci-tech today, we just looked at the rocket that could change the future of space travel, the key – this rocket is powered by a new type of fuel that could potentially be manufactured on the moon. Join in me now from the Museum of Science is Alex Fiorentino, our nano-technology correspondent.
“Alex,tell us about this new research – is viewers scratching their head about rocket fuel being made on the moon!”

“Ah, well /, when you are, when you are dealing with space travel, one of the biggest challenges is really fuel. En… if you think about it - it takes a lot of fuel for me to move my car just from here toNew York. So imagine how much it really takes to move a space shuttle from the earth into outer space. It's an awful lot - it is almost 4 million pounds of fuel for every space shuttle launch. Um, and so if we want/ to travel further and explore more of space, we need even more fuel. Some, some researchers and some young scientists from Purdue University and Penn State University though,have started looking at this problem in a little bit of different way. Andtheir thinking is that, what if we didn't need to bring all this fuel with us?What if we could travel to the moon, refill the tank there and then just keep going? "

"Sounds like a great idea, but how could you refill on the moon?"

"Ah, well, you'd really just have to use akind of fuel that's available there and that's really exactly what they did.They've created a new kind of rocket fuel that they call "ALICE". At"AL" for "aluminum" and "ICE" for"ice". And that's really all it is, it is just a mixture of ice andtiny nanoscale particles of aluminum. And if we look at some of the videos fromthe scientists, we'll see that this fuel really works. The students launch a rocketalmost 1300 feet into the air using only this ALICE as fuel. And so this is particularly exciting because recent evidence suggests that there are significant ice on both the moon and on Mars, which could make this, this dream of a refueling station on the moon a reality."

"Oh that's all very interesting, ah, but,but how does this aluminum rocket fuel work?"

"Ah, well, in a sense it works the same way as pretty much every other kind of rocket. And that is based on the principleof that for every action; there is an equal and opposite reaction. So if I take this balloon, and I would let it go, the balloon would force air erupt in thisdirection oops, excuse me, in this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they are really all doing the same thing. They're forcing gases out in one direction to create acceleration in the other direction. The difference is that differentkinds of rockets use different reactions to force those gases out. Um, so in the case of the space shuttle boosters, they burn a whole variety of chemicalsand they actually create an exhaust that contains almost, ah, or or hundreds of tons of hydrochloric acid, whereas the ALICE rocket burns only ice and aluminumand so its exhaust contains only hydrogen gas and aluminum oxide, which makesit a much more environmentally friendly fuel than what 's used in the spaceshuttle boosters."

" ** works with any kind of aluminum, I mean, could you load aluminum foil and water into a rocket and somehow ignite it and launch it?"

"Well that answer there is no and actually it's a really important point because in this case the size of the aluminum is really important. It makes a really big difference in how the aluminum reacts and in fact this would be true with all kinds of materials and reactions. So to demonstrate this let's jump over and and have a little fun with these bottles of soda. So what I have here on the left is a single piece of iron, and on the right I have the same amount of iron but it's in many many tiny pieces so if I drop these both into the soda bottles we'll get a sense for the difference between really small particles and slightly larger particles. So this reaction is obviously a little bit different than what happens on the ALICE rocket but the same principlestill holds true - that smaller particles lead to faster reactions so by using nano-sized aluminum particles the researchers were able to make a fuel that reacts very quickly and generates a lot of threst.

"That's amazing, how long before we mightsee this fuel being used in, ah, by NASA?"

"Ah, well, this this fuel is still at very early stage of development, so it'll be a little while before we see it on anysort of major space craft. But for now, it's, it's already working. Its its performance is as good as the fuel that's on the space shuttle,  or in some casesis close to as good.
Ah and it has the added advantages of being more environmentally friendly and also possibly being available on other planets. So I suspect that we might hear more about this ALICE rocket fuel in the future."

"All right. Fascinating. Alex, thanks for joining us!"

"Thanks for have me, /.”
1

评分次数

实现无障碍英语沟通
HW

Now from the Boston Museum of Science, Sci-Tech Today on NECN.
“5,4, 3, 2, 1, nought!”
On Sci-Tech Today, we just looked at the rocket that could change the future of space travel, the key – this rocket is powered by a new type of fuel that could potentially be manufactured on the moon. Join in me now from the Museum of Science is Alex Fiorentino, our nano-technology correspondent.
“Alex,tell us about this new research – is viewers scratching their head about rocket fuel being made on the moon!”

“Ah, well, when you are, when you are dealing with space travel, one of the biggest challenges is really fuel. En… if you think about it - it takes a lot of fuel for me to move my car just from here to New York. So imagine how much it really takes to move a space shuttle from the earth into outer space. It's an awful lot - it is almost 4 million pounds of fuel for every space shuttle launch. Um, and so if we want it to travel further and explore more of space, we need even more fuel. Some, some researchers and some young scientists from Purdue University and Penn State University though, have started looking at this problem in a little bit of different way. And their thinking is that, what if we didn't need to bring all this fuel with us? What if we could travel to the moon, refill the tank there and then just keep going? "

"Sounds like a great idea, but how could you refill on the moon?"

"Ah, well, you'd really just have to use a kind of fuel that's available there and that's really exactly what they did. They've created a new kind of rocket fuel that they call "ALICE". At"AL" for "aluminum" and "ICE" for"ice". And that's really all it is, it is just a mixture of ice and tiny nano-scale particles of aluminum. And if we look at some of the videos from these scientists, we'll see that this fuel really works. The students launch a rocket almost 1300 feet into the air using only this ALICE as fuel. And so this is particularly exciting because recent evidence suggests that there are significant ice on both the moon and on Mars, which could make this, this dream of a refueling station on the moon a reality."

"Oh that's all very interesting, ah, but,but how does this aluminum rocket fuel work?"

"Ah, well, in a sense it works the same way as pretty much every other kind of rocket. And that is based on the principle that for every action; there is an equal and opposite reaction. So if I take this balloon, and I would let it go, the balloon would force air erupt in this direction oops, excuse me, in this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they are really all doing the same thing. They're forcing gases out in one direction to create acceleration in the other direction. The difference is that different kinds of rockets use different reactions to force those gases out. Um, so in the case of the space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust that contains almost, ah, or or hundreds of tons of hydrochloric acid, whereas the ALICE rocket burns only ice and aluminum and so its exhaust contains only hydrogen gas and aluminum oxide, which makes it a much more environmentally friendly fuel than what 's used in the space shuttle boosters."

“Whether that could work with any kind of aluminum, I mean, could you load aluminum foil and water into a rocket and somehow ignite it and launch it?"

"Well that answer there is no and actually it's a really important point because in this case the size of the aluminum is really important. It makes a really big difference in how the aluminum reacts and in fact this would be true with all kinds of materials and reactions. So to demonstrate this let's jump over and and have a little fun with these bottles of soda. So what I have here on the left is a single piece of iron, and on the right I have the same amount of iron but it's in many many tiny pieces so if I drop these both into the soda bottles we'll get a sense for the difference between really small particles and slightly larger particles. So this reaction is obviously a little bit different than what happens on the ALICE rocket but the same principle still holds true - that smaller particles lead to faster reactions so by using nano-sized aluminum particles the researchers were able to make a fuel that reacts very quickly and generates a lot of thrust.

"That's amazing, how long before we might see this fuel being used in, ah, by NASA?"

"Ah, well, this this fuel is still at very early stage of development, so it'll be a little while before we see it on any sort of major space craft. But for now, it's, it's already working. Its its performance is as good as the fuel that's on the space shuttle,  or in some cases, is close to as good.

Ah and it has the added advantages of being more environmentally friendly and also possibly being available on other planets. So I suspect that we might hear more about this ALICE rocket fuel in the future."

"All right. Fascinating. Alex, thanks for joining us!"

"Thanks for having me, Chad.”
1

评分次数

普特听力大课堂
On ngkfgetg

Now from the Boston Museum of Science, Sci-tech today on NECN.
“5, 4, 3, 2, 1, nought!”
On sci-tech today, we just looked at the rocket that could change the future of space travel, the key – this rocket is powered by a new type of fuel that could potentially be manufactured on the moon. Join in me now from the Museum of Science is Alex Fiorentino, our nano-technology correspondent.
“Alex, tell us about this new research – is viewers scratching their head about rocket fuel being made on the moon!”

“Ah, well /, when you are, when you are dealing with space travel, one of the biggest challenges is really fuel. En… if you think about it - it takes a lot of fuel for me to move my car just from here
to New
York. So imagine how much it really takes to move a space shuttle from the earth into outer space. It's an awful lot - it is almost 4 million pounds of fuel for every space shuttle launch. Um, and so if we want/ to travel further and explore more of space, we need even more fuel. Some, some researchers and some young scientists from Purdue University and Penn State University though, have
started looking at this problem in a little bit of different way. And their thinking is that, what if we didn't need to bring all this fuel with us? What
if we could travel to the moon, refill the tank there and then just keep going? "

"Sounds like a great idea, but how could you refill on the moon?"

"Ah, well, you'd really just have to use
a kind of fuel that's available there and that's really exactly what they did. They've
created a new kind of rocket fuel that they call "ALICE". At"AL" for "aluminum" and "ICE" for"ice". And that's really all it is, it is just a mixture of iceand tiny
nanoscale particles of aluminum. And if we look at some of the videosfrom the scientists, we'll see that this fuel really works. The students launch a rocket almost
1300 feet into the air using only this ALICE as fuel. And so this is particularly exciting because recent evidence suggests that there are significant ice on both the moon and on Mars, which could make this, this dream of a refueling station on the moon a reality."

"Oh that's all very interesting, ah,
but how does this aluminum rocket fuel work?"

"Ah, well, in a sense it works the same way as pretty much every other kind of rocket. And that is based on the
principle of that for every action; there is an equal and opposite reaction. So if I take this balloon, and I would let it go, the balloon would force air erupt in this direction oops, excuse me, in this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they are really all doing the same thing. They're forcing gases out in one direction to create acceleration in the other direction. The difference is that different kinds of rockets use different reactions to force those gases out. Um, so in the case of the space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust that contains almost, ah, or or hundreds of tons of hydrochloric acid, whereas the ALICE rocket burns only ice and aluminum and so its exhaust contains only hydrogen gas and aluminum oxide, which makes it
a much more environmentally friendly fuel than what 's used in the space shuttle
boosters."

"
Will this
works with any kind of aluminum, I mean, could you load a
aluminum foil and water into a rocket and somehow ignite it and launch it?"

"Well that answer there is no and actually it's a really important point because in this case the size of the aluminum is really important. It makes a really big difference in how the aluminum reacts and in fact this would be true with all kinds of materials and reactions. So to demonstrate this let's jump over and and have a little fun with these bottles of soda. So what I have here on the left is a single piece of iron, and on the right I have the same amount of iron but it's in many many tiny pieces so if I drop these both into the soda bottles we'll get a sense for the difference between really small particles and slightly larger particles. So this reaction is obviously a little bit different than what happens on the ALICE rocket but the same
principle still holds true - that smaller particles lead to faster reactions so by using nano-sized aluminum particles the researchers were able to make a fuel that reacts very quickly and generates a lot ofthrust.

"That's amazing, how long before we
might see this fuel being used in, ah, by NASA?"

"Ah, well, this this fuel is still at very early stage of development, so it'll be a little while before we see it on
any sort
of major space craft. But for now, it's, it's already working. Its its performance is as good as the fuel that's on the space shuttle,  or in some cases
close to as good.


Ah and it has the added advantages of being more environmentally friendly and also possibly being available on other planets. So I suspect that we might hear more about this ALICE rocket fuel in the future."

"All right. Fascinating. Alex, thanks for joining us!"

"Thanks for have me, /.”
1

评分次数

切磋技艺,共同进步。
好栏目推荐之美国口语俚语
Homework

Now from the Boston Museum of Science, SciTech today on NECN.

5, 4, 3, 2, 1, naught.

On SciTech today we just look at the rocket that could change the future of space travel. The key - this rocket is powered by a new type of fuel that could potentially be manufactured on the Moon. Joining me now from the Museum of Science is Alex Fiorentino, our nanotechnology correspondent. Alex, tell us about this new research. Is viewer scratching their head about rocket fuel being made on the Moon?

Well, Chet, when you are dealing with space travel, one of the biggest challenges is really fuel. If you think about it, it takes a lot of fuel for me to move my car just from here to New York. So imagine how much it really takes to move a space shuttle from the Earth into outer space. It's an awful lot. It's almost 4 million pounds of fuel for every space shuttle launch. And so if you want to travel further and explore more space, we need even more fuel. Some researchers and some Young scientist from Purdue University and Penn State University though have started looking at this problem in a little bit different way. And their thinking is that, what if we didn't need to bring all this fuel with us, what if we could travel to the Moon, refill the tank there and just keep going.

Sounds like a great idea, but how could you refill on the Moon?

Well you really just have to use a kind of fuel that's available there and that's really exactly what they did. They created a new kind of rocket fuel that they call Alice, at AL for aluminum and ICE for ice, and that's really all it is. It's just a mixture of ice and tiny nano scale particles of aluminum. And if we look at some videos from these scientists, we'll see that this fuel really works. The student launched a rocket almost 1300 feet into the air, using only this Alice as fuel. This is particularly exciting because recent evidence suggests that significant ice on both the Moon and Mars, which could make this dream of refueling station on the Moon a reality.

That's very interesting, but how does this aluminum rocket fuel work?

Well, in a sense, it works in the same way as pretty much every other kind of rocket, and that's based on principle that for every action. There is equal and opposite reaction. So if I take this balloon and I would let it go, the balloon will force air erupt in this direction, oops, excuse me, in this direction. And so the balloon would fly in that direction. So the balloon, the space shuttle, the Alice rocket, they really are doing it. They are forcing gases out in one direction to create acceleration in the other direction. The difference is that different kinds of rockets use different reactions to force these gases out. So in the case of space shuttle boosters, they burn a whole variety of chemicals and actually created an exhaust that contains almost hundreds of tons of hydrochloric ice. While as the Alice rocket burns only ice and aluminum and its exhaust contains only hydrogen gas and aluminum oxide which makes it a much more environmentally friendly fuel than what's used in space shuttle boosters.

Will this work with any kind of aluminum? I mean, could you load a aluminum foil and water in a rocket somehow ignite it and launch it?

Well answer there is no. Actually it's really important point, because in this case the size of aluminum is really important, makes it really difference how aluminum reacts. And in fact this will be true with all kinds of materials and reactions. So to demonstrate this, let’s jump over and have a little fun with these bottles of soda. So what we have here on the left is single piece of iron, on the right I have the same amount of iron, but it's in many many tiny pieces. So if I drop these both into the soda bottles, we'll get sense for the difference between really small particles and slight larger particles. So this reaction is obviously a little bit different than what happens in Alice rocket, but the same principle still holds true that smaller particles lead to faster reactions. So by using nano size aluminum particles, the researchers were able to make fuel that reacts very quickly and generate a lot of thrust.

Amazing. How long before we might see this fuel being used by NASA?

Well, this fuel is still at very early stage of development, so it will be a little while before we see it on any sort of major space craft. But for now it's already working. The performance is as good as the fuel that's on space shuttle or in some cases close to its good. And it has added the advantages of being more environmentally friendly and also possibly being available on other planets. So I suspect that we might hear more about this Alice rocket fuel in the future.

All right, fascinating, Alex thanks for joining us.

Thanks for having me, Chet.
1

评分次数

Hw
Now from the Boston Museum of Science, Sci-tech today on NECN.
“ 5, 4, 3,2,1, nought!”
-on sci-tech today, you just look at the rocket that could change the future of space travel. The key, this rocket powered by the new type of fuel that could potentially be manufactured on the moon.
Join in me now from the Museum of Science is Alex Fiorentino, our /// technology correspondent. Alex, tell us about this new research is viewers are scratching their head about rocket fuel they made on the moon.
-        // when you are dealing with space travel, one of the biggest challenge is really fuel. I, if you think about it, it takes a lot fuel for me to move my car just from here to New York, So imagine how much it really takes to move a space shuttle from the earth into outer space. It’s an awful lot. It’s almost 4 million pounds of fuel for every space shuttle launch. Also, if you want to travel further and explore more of the space, we need even more fuel. Some, some researchers and some young scientists from Perdue University and PENN State University though, have started looking at this problem in a little bitter of different way. And their thinking is that whatever we didn’t need to bring on this fuel with us. What if we could travel on the moon, we fueled tank there and just keep going.
-        -Sounds like a great idea, but how could you refuel on the moon?
-        Well, you did really just have to use the kind of fuel that’s available there, and that’s really exactly what they did. They’ve created a new kind of rocket fuel that they call Alice, an al- for aluminum and -ice for ice. That’s really all it is. You just make sure of ice and tiny minuscule particles of aluminum. And if you look at some video from the aside, you’ll see that this fuel really works. The students launch the rocket almost 1300 feet into the air using only this Alice as fuel. Until this particularly exciting because recent evidence suggests that there significant ice on both the moon and on mars. Which could make this dis- dream  of a refuel station on the moon a reality.
-        -Well, that’s all very interesting but how does this aluminum rocket fuel work?
-        Ah, well, in a sense, it works the same way as pretty much every kind of rocket, and that’s based on the principle, therefore, every action. There is an equal one opposite reaction. So if I take this balloon, and I would let it go. The balloon with force air // in this direction, whoops, //// in this direction. And so the balloon was flying that direction. So the balloon , the space shuttle, the Alice rocket, there’re really all doing. The forcing gases out in one direction to create acceleration in the other direction. The differences that different kinds of rockets use difference reactions to force those gases out. So in the case of the space shuttle boosters, they burn a whole /// of chemicals and they actually create an exhaust that contains almost or hundreds of tons of hydrochloric acid. While as the Alice rocket burns only ice and aluminum. And so it //thus contains only hydrogen gas and aluminum m//, which mixed on much more environmentally a friendly fuel than what you used in the space shuttle or boosters.
-        Well, this work with any kind of aluminum mean could allow a lot of aluminum foil and water in a rocket and somehow, ignited in launching.
-        Well, that answer there is no, and actually it’s really import point, because in this case the size of the aluminum is really import, it makes a really big different in how these aluminum reacts. And the fact is would true with all kinds material then reactions. So today //we jump over and have little fun with these bottles of soda. So what I have here on the left is a single piece of iron. And on the right I have the same amount of iron but it’s in many many tiny pieces. So if I drop these both into the soda bottles, we’ll get a sense for the difference between really small part of particles and finally larger particles.  So this reaction is obviously a little bit different scene what happens on the Alice rocket. But the same principle still holds true that smaller particles easy to faster reactions, using a nano-size aluminum particles, the researchers were able to make a fuel that reacts very quickly in generates lot of frost.
-        -That’s amazing. How long before we maxing this fuel’se been used in bi//?.         
-        Well, this, this fuel is still at very early stage of development, so it’ll be a little while before we see it on any sort of major spacecraft, but for now it’s already working, its performance, it’s as good as the fuel that of space shuttle or in some cases close to as good. And it had to be added energies been more environmentally friendly and also possibly been available another planet. So I suspect that we might fuel more about Alice rocket fuel in the future. future.
-        Alright, fascinating, Alex, thanks for joining us.
-        Thanks for have met each other.
1

评分次数

要跳多少次才能飞起来?
A new kind of rocket fuel ---Alice = Aluminum + ice !

Now from the Boston Museum of Science, Sci-tech today on NECN.
“5, 4, 3, 2, 1, naught=nought!”
On sci-tech today, we just looked at the rocket that could change the future of space travel, the key – this rocket is powered by a new type of fuel that could potentially be manufactured on the moon. Join in me now from the Museum of Science is Alex Fiorentino, our nano-technology correspondent.
“Alex, tells us about this new research – is viewers scratching their head about rocket fuel being made on the moon!”

“Ah, well /, when you are, when you are dealing with space travel, one of the biggest challenges is really fuel. En… if you think about it - it takes a lot of fuel for me to move my car just from here to New
York. So imagine how much it really takes to move a space shuttle from the earth into outer space. It's an awful lot - it is almost 4 million pounds of fuel for every space shuttle launch. Um, and so if we want/ to travel further and explore more of space, we need even more fuel. Some, some researchers and some young scientists from Purdue University and Penn State University though, have started looking at this problem in a little bit of different way. And their thinking is that, what if we didn't need to bring all this fuel with us? What
if we could travel to the moon, refuel the tank there and then just keep going? "

"Sounds like a great idea, but how could you refeul on the moon?"

"Ah, well, you'd really just have to use a kind of fuel that's available there and that's really exactly what they did. They've
created a new kind of rocket fuel that they call "ALICE". At"AL" for "aluminum" and "ICE" for"ice". And that's really all it is, it is just a mixture of iceand tiny
nanoscale particles of aluminum. And if we look at some of the videos from the scientists, we'll see that this fuel really works. The students launch a rocket almost
1300 feet into the air using only this ALICE as fuel. And so this is particularly exciting because recent evidence suggests that there are significant ice on both the moon and on Mars, which could make this, this dream of a refueling station on the moon a reality."

"Oh that's all very interesting, ah, but how does this aluminum rocket fuel work?"

"Ah, well, in a sense it works the same way as pretty much every other kind of rocket. And that is based on the principle of that for every action; there is an equal and opposite reaction. So if I take this balloon, and I would let it go, the balloon would force air erupt in this direction oops, excuse me, in this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the ALICE rocket, they are really all doing the same thing. They're forcing gases out in one direction to create acceleration in the other direction. The difference is that different kinds of rockets use different reactions to force those gases out. Um, so in the case of the space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust that contains almost, ah, or or hundreds of tons of hydrochloric acid, whereas the ALICE rocket burns only ice and aluminum and so its exhaust contains only hydrogen gas and aluminum oxide, which makes it
a much more environmentally friendly fuel than what 's used in the space shuttle
boosters."

" Will this
works with any kind of aluminum, I mean, could you load a
aluminum foil and water into a rocket and somehow ignite it and launch it?"

"Well that answer there is no and actually it's a really important point because in this case the size of the aluminum is really important. It makes a really big difference in how the aluminum reacts and in fact this would be true with all kinds of materials and reactions. So to demonstrate this let's jump over and and have a little fun with these bottles of soda. So what I have here on the left is a single piece of iron, and on the right I have the same amount of iron but it's in many many tiny pieces so if I drop these both into the soda bottles we'll get a sense for the difference between really small particles and slightly larger particles. So this reaction is obviously a little bit different thing than what happens on the ALICE rocket but the same principle still holds true - that smaller particles lead to faster reactions so by using nano-sized aluminum particles the researchers were able to make a fuel that reacts very quickly and generates a lot of thrust推力.

"That's amazing, how long before we might see this fuel being used in, ah, by NASA?"

"Ah, well, this this fuel is still at very early stage of development, so it'll be a little while before we see it on any sortof major space craft. But for now, it's, it's already working. Its its performance is as good as the fuel that's on the space shuttle,  or in some cases
close to as good.Ah and it has the added advantages of being more environmentally friendly and also possibly being available on other planets. So I suspect that we might hear more about this ALICE rocket fuel in the future."

"All right. Fascinating. Alex, thanks for joining us!"
1

评分次数

每天半小时 轻松提高英语口语
本帖最后由 littlecase 于 2010-1-19 17:40 编辑

HW

Now from the Boston Museum of science, sci-tech today on NECN.

5,4,3,2,1, naught.

On the sci-tech today, we just look at the rock that could change the future of space travel, the key, this rocket is powered by a new type of fuel, that could potentially be manufactured on the moon. Join with me now, from museum of science, Alex Fiorentino, our nano-technology correspondent. Alex, tell us about this new research. Viewers are scratching their head about the rocket fuel being made on the moon.

Well, Chat. When you are dealing with space travel, one of the biggest challenges is really fuel. If you think about it, it takes a lot of fuel for me to move my car just from here to New York. So imagine, how much it really takes to move the space shuttle from the earth into outer space. It’s an awful lot. It’s almost 4 milllion tons of fuel for every space shuttle launched. And so if you want to travel further and explore more space, we need even more fuel. Some researchers and some young scientists from Purdue university and Penn university though, have started looking at this problem in a little bit different way. And their thinking is that what if we didn’t need to bring all the fuel with us, what if we could travel to the moon, refuel the tank there and then just keep going.

Sounds like a great idea, but how could you refuel on the moon?

Well, you really just have to use a new kind of fuel, that’s available there. And that’s really exactly what they did. They have created a new kind of rocket fuel, that they called alice, at AL for aluminium and ICE for ice, and that’s really what it is, it's just a mixture of ice and tiny nanoscale particles of aluminium. And if we look at some videos from the scientists, we’ll see that this fuel really works. The students launched rocket almost 13,00 feet into the air using only this alice as fewer. This is particularly exciting, because recent evidence suggests that the significant ice, both on the moon and on Mars, which could make this dream of a refueling station on the moon a reality.

Oh, that’s all very interesting. But how does the aluminium rocket fuel work?

In a sense, it works the same way as pretty much every other kind of rocket, and that’s based on the principle that’s for every reaction and that’s equal to the opposite reaction. If I take this balloon, and I would let it go, the balloon will force the air in this direction, oops, excuse me, this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the alice rocket, they’re really all doing. They’re forcing gases out in one direction to create the acceleration in the other direction. The differences, that different kinds of rockets use different reactions to force those gases out. So in the case of space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust, that contains almost hundreds of tons of hydrochloric acid, well, the alice rocket burns only ice and aluminium, and so its exhaust only contains hydrogen gas and aluminium oxide, which makes it a much more environmentally friendly fuel than what they use in the space shuttle boosters.

Will this work with any kind of aluminium, I mean, could you load aluminium foil and water into a rocket somehow ignite it and launch it?

Well, that answer is there is no. And actually, it’s really an important point. Because in this case, the size of the aluminium is really important. It makes really a big difference in how the aluminium reacts. And in fact, it would be true with all kinds of materials and reactions. So to demonstrate this with jumpover and have a little fun with these bottles of soda. So what I have here, on the left is a single piece of iron, and on the right I have the same amount of iron, but they are in many many tiny pieces. So I drop these both into the soda bottles, we’ve got the sense for the difference between the really small particles and slightly large particles. So this reaction is obviously a little bit different from what happened on the irocket. But the same principle still holds true. That small particles lead to faster reactions. So by using nano-size aluminium particles, the researchers were able to make a fuel that reacts very quickly and generates a lot of thrust.

That’s amazing, how long before we might see this fuel being used by NASA?

Well, this fuel is still at the very early stage of development, so be a little while before we see it on any sort of major space craft. Bur for now, it’s already working, its performance is as good as the fuel that's in the space shuttle, or in some case close to as good, and it has the advantages of being more environmentally friendly and also possibly being developed on other planets. So I suspect that we might hear more about this Alice rocket fuel in the near future.

Fascinating alice. Thanks for joining us, Alex.

Thanks for having me, Chat.
1

评分次数

楼上的每人的最后一句都错了!~ 应该是 Thanks for having me chat 。
口译专员推荐—>口译训练软件IPTAM口译通
on littlecase
Now from the Boston Museum of science, sci-tech today on NECN.

5,4,3,2,1, naught.

On the sci-tech today, we just look at the rocket that could change the future of space travel, the key, this rocket is powered by a new type of fuel, that could potentially be manufactured on the moon. Joining me now, from museum of science, Alex Fiorentino, our nano-technology correspondent. Alex, tell us about this new research. Viewers are scratching their head about the rocket fuel being made on the moon.

Well, Chat. When you are dealing with space travel, one of the biggest challenges is really fuel. If you think about it, it takes a lot of fuel for me to move my car just from here to New York. So imagine, how much it really takes to move the space shuttle from the earth into outer space. It’s an awful lot. It’s almost 4 milllion pounds of fuel for every space shuttle launch. And so if you want to travel further and explore more space, we need even more fuel. Some researchers and some young scientists from Purdue university and Penn university though, have started looking at this problem in a little bit different way. And their thinking is that what if we didn’t need to bring all the fuel with us, what if we could travel to the moon, refuel the tank there and then just keep going.

Sounds like a great idea, but how could you refuel on the moon?

Well, you really just have to use a  kind of fuel, that’s available there. And that’s really exactly what they did. They have created a new kind of rocket fuel, that they called alice, at AL for aluminium and ICE for ice, and that’s really what it is, it's just a mixture of ice and tiny nanoscale particles of aluminium. And if we look at some videos from the scientists, we’ll see that this fuel really works. The students launched rocket almost 13,00 feet into the air using only this alice as fuel. This is particularly exciting, because recent evidence suggests that there are significant ice, both on the moon and on Mars, which could make this dream of a refueling station on the moon a reality.

Oh, that’s all very interesting. But how does this aluminium rocket fuel work?

In a sense, it works the same way as pretty much every other kind of rocket, and that’s based on the principle that’s for every action and that’s equal one opposite ,reaction. If I take this balloon, and I would let it go, the balloon will force the air in this direction, oops, excuse me, this direction, and so the balloon would fly in that direction. So the balloon, the space shuttle, the alice rocket, they’re really all doing. They’re forcing gases out in one direction to create acceleration in the other direction. The differences, that different kinds of rockets use different reactions to force those gases out. So in the case of space shuttle boosters, they burn a whole variety of chemicals and they actually create an exhaust, that contains almost hundreds of tons of hydrochloric acid, well, the alice rocket burns only ice and aluminium, and so its exhaust only contains hydrogen gas and aluminium oxide, which makes it a much more environmentally friendly fuel than what they used in the space shuttle boosters.

Will this work with any kind of aluminium, I mean, could you load aluminium foil and water into a rocket somehow ignite it and launch it?

Well, that answer is there is no. And actually, it’s really an important point. Because in this case, the size of the aluminium is really important. It makes really a big difference in how the aluminium reacts. And in fact, it would be true with all kinds of materials and reactions. So to demonstrate this with jumpover and have a little fun with these bottles of soda. So what I have here, on the left is a single piece of iron, and on the right I have the same amount of iron, but they are in many many tiny pieces. So I drop these both into the soda bottles, we’ve got the sense for the difference between the really small particles and slightly large particles. So this reaction is obviously a little bit different from what happened on the irocket. But the same principle still holds true. That smaller particles lead to faster reactions. So by using nano-size aluminium particles, the researchers were able to make a fuel that reacts very quickly and generates a lot of thrust.

That’s amazing, how long before we might see this fuel being used by NASA?

Well, this fuel is still at the very early stage of development, so be a little while before we see it on any sort of major space craft. Bur for now, it’s already working, its performance is as good as the fuel that's on the space shuttle, or in some case close to as good, and it has the added advantages of being more environmentally friendly and also possibly being developed on other planets. So I suspect that we might hear more about this Alice rocket fuel in the  future.

Fascinating alice. Thanks for joining us, Alex.

Thanks for having me, Chat.
返回列表