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Astronauts In Space

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Subido el 28 de mayo de 2007 por EducaMadrid

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NASA Why? Files segment explaining how astronauts train to work and live in space where there is zero gravity.

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Hi, I'm Dom Del Rosso, Test Director with NASA's Reduced Gravity Airplane. 00:00:00
How can I help you? 00:00:04
We need to learn more about astronauts and how they live and work in space. 00:00:05
Well, they train in many different ways. 00:00:09
One of the ways is aboard our KC-135, the Weightless Wonder. 00:00:11
Why do you call it the Weightless Wonder? 00:00:15
The KC-135 is an airplane we can use to simulate the free fall of zero gravity 00:00:17
so the astronauts can experience weightlessness. 00:00:21
How do you simulate weightlessness in an airplane? 00:00:23
Well, we fly a series of huge arcs. 00:00:26
In the sky, we call parabolas. 00:00:29
It's kind of like riding a giant roller coaster in the sky. 00:00:31
I learned about parabolas in math, and I love roller coasters. 00:00:34
Well, then you would love the KC-135. 00:00:38
We start at an altitude of about 24,000 feet and climb to make an arc. 00:00:41
When the plane reaches the top of the arc at about 33,000 feet, it dives back towards the Earth. 00:00:45
Anyone inside the airplane is also falling at the same rate that we're diving. 00:00:50
This causes the people to float around inside. 00:00:54
That's really cool. 00:00:56
Do they float for very long? 00:00:58
Not really, only for about 20 or 25 seconds in zero-g. 00:01:00
However, we can change the parabola to simulate either the gravity of Moon or Mars, 00:01:04
and they last a little bit longer. 00:01:08
So how does this help the astronauts to train for space? 00:01:10
Well, it gives the astronauts a chance to see how their bodies will react and adapt to weightlessness, 00:01:13
as well as give them a chance to practice with their experiments before they fly. 00:01:18
We can also use it to verify and help design new hardware for the astronauts to use later on. 00:01:22
I get sick when I ride roller coasters. 00:01:27
Do people ever get sick on the KC-135? 00:01:30
Well, yes, occasionally an astronaut will get sick, 00:01:33
and that's why sometimes people call it the vomit comet. 00:01:36
But it doesn't happen all that often. 00:01:39
Thanks, Mr. Del Rosso. This really helped. 00:01:42
You're welcome, and good luck on your project. 00:01:45
Goodbye, Mr. Del Rosso. 00:01:48
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Idioma/s:
en
Niveles educativos:
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      • Nivel Intermedio
Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
149
Fecha:
28 de mayo de 2007 - 15:33
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
01′ 49″
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
480x360 píxeles
Tamaño:
11.08 MBytes

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