Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

Propulsion In Space - Contenido educativo

Ajuste de pantalla

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 28 de mayo de 2007 por EducaMadrid

357 visualizaciones

NASA Connect segment exploring how NASA is researching to design, build and test a new propulsion technology that uses magnetism, electricity, and tethers instead of rocket engines.

Más información Transcripción

Descargar la transcripción

Man, those kids looked like they were having a lot of fun. 00:00:00
And learning a lot, too. 00:00:03
Well, just like NASA Connect teamed up with a school to learn about electromagnetism, 00:00:05
NASA's teamed up with a university to help us understand propulsion in space. 00:00:09
Hey, let's head to the University of Michigan and see what they've been working on. 00:00:12
I'm Professor Brian Gilchrist with the University of Michigan in Ann Arbor. 00:00:17
And I'm Jane O'Weiler, a graduate student in space systems engineering here at the university. 00:00:21
My students were asked to design, build, and test a very small spacecraft 00:00:26
that will be used with NASA's ProSense tethered mission. 00:00:31
ProSense is demonstrating a new kind of propulsion technology that does not require any rocket engines. 00:00:34
It uses the Earth's magnetic field to help push and pull on spacecraft. 00:00:40
ProSense will pull down a large, used-up rocket stage. 00:00:45
We named the satellite Icarus after the character from Greek mythology. 00:00:49
As you might know, Icarus and his father Daedalus were trying to escape from Crete using wings that they'd built. 00:00:53
Icarus flew too close to the sun, and the wax that was holding his wings on melted and he fell into the Aegean Sea. 00:00:59
The ProSense mission will be successful if it can rapidly bring down the rocket engine from orbit, 00:01:05
which will ultimately burn up in the atmosphere, falling from the sky, just like Icarus. 00:01:11
The Icarus satellite will pull out 15 kilometers of tether from the deployer, 00:01:17
and the instruments on board will measure the location of the end of the tether, the end mass, and spacecraft attitude. 00:01:22
Did she say attitude? 00:01:29
Not that kind of attitude. I mean the position of the spacecraft relative to the Earth. 00:01:31
Right, Jane. The students designed this satellite to collect this information and transmit the data to the ground. 00:01:36
Mission scientists will use this information to better understand the dynamics of tether systems. 00:01:42
To build our satellite, we used computer design tools and a lot of discussions and mentoring, 00:01:47
from experienced engineers and faculty at Michigan, the NASA Marshall Space Flight Center, 00:01:51
and from industry partners such as TRW. 00:01:56
After the design work, various mechanical and electrical components were purchased or built. 00:01:59
These pieces were carefully put together, and then we were able to begin a long list of tests 00:02:05
to see if it was going to work the way we wanted it to. 00:02:10
At the same time we were designing the hardware, we were developing the computer software. 00:02:13
Not everything worked the first time, as is typical of anything new being developed. 00:02:18
So we had to consider what could have gone wrong, read through the notes and journals 00:02:22
to check that we did everything right, and then try again. 00:02:26
And sure enough, some changes had to be made to get it ready for delivery and flight. 00:02:30
Each step required careful planning to accomplish the special steps that we mentioned earlier. 00:02:34
The tests were done here in our labs at Michigan and at the Marshall Space Flight Center. 00:02:40
How did you gather the data? 00:02:45
Electronic sensors were often used in our tests to make the critical measurements necessary 00:02:47
to know that the Icarus satellite was still working correctly. 00:02:52
But other data collection involved just looking at the satellite to see that, for example, 00:02:55
our solar cells were not broken. 00:02:59
And sometimes we had to measure how much power the solar panels could generate, 00:03:01
or how much power our radio transmitter was sending to its antenna. 00:03:05
Wait a minute. They're in Michigan and... 00:03:09
And we're at the Marshall Space Flight Center in Huntsville, Alabama. 00:03:12
How did they do that? 00:03:15
Good communications in a project like this is very important. 00:03:16
When the students were designing and building their spacecraft, 00:03:19
they communicated with their NASA partners using presentations, written reports, 00:03:22
and through e-mail using the Internet. 00:03:27
Later, as we were collecting data, we dealt with the test reports that showed 00:03:29
how the satellite and its instruments performed. 00:03:33
By using patterns, functions and algebra, they were able to prove to themselves and NASA 00:03:36
that the Icarus satellite was ready for flight. 00:03:41
Being able to understand data in the form of charts and graphs is a lot easier than descriptions. 00:03:43
Mathematics is really like another language, 00:03:49
a language that all of our partners need to understand to be able to work together. 00:03:52
Valoración:
  • 1
  • 2
  • 3
  • 4
  • 5
Eres el primero. Inicia sesión para valorar el vídeo.
Idioma/s:
en
Materias:
Matemáticas
Niveles educativos:
▼ Mostrar / ocultar niveles
      • Nivel Intermedio
Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
357
Fecha:
28 de mayo de 2007 - 16:53
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
03′ 56″
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:
23.71 MBytes

Del mismo autor…

Ver más del mismo autor

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid