Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

Models

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

360 visualizaciones

NASA Sci Files segment explaining models, why they are important, and how they are made.

Más información Transcripción

Descargar la transcripción

You must be one of the treehouse detectives. 00:00:00
Hi, I'm Kaylee. 00:00:02
I'm Sam James, an engineering technician. 00:00:05
Hi, Mr. James. I really like this place. 00:00:08
There are so many models. 00:00:10
It's a pretty cool place to work. 00:00:12
All the models you see here are designed by NASA researchers. 00:00:14
I was hoping you could help me understand more about 00:00:17
why models are important and how they're made. 00:00:20
Um, okay, well, this blended wing body, 00:00:23
where do you think we have to start to make this model? 00:00:26
A mold? 00:00:29
Good guess. 00:00:31
Come over to my desk. That's where we'll begin. 00:00:33
Okay. 00:00:36
We use a computer-aided design program, CAD for short, 00:00:38
to make all of our models, like this blended wing body. 00:00:41
Engineers and designers use their design specifications 00:00:44
to create a profile. 00:00:47
Then the programmers create drawings for the operators to use. 00:00:49
What's that over there? 00:00:52
They are molds, which are used to make models. 00:00:54
Do you know how to make a mold? 00:00:57
Sure. 00:00:59
We use several different technologies, 00:01:01
depending on the type of model we're making. 00:01:03
Again, this blended wing model. 00:01:05
One way to make this model airplane 00:01:07
is to put fiberglass or graphite skins in the mold, 00:01:09
then insert what we call hardpoints and bulkheads for support. 00:01:12
That's really neat. 00:01:15
What kind of materials do you use? 00:01:17
We usually use aluminum, balsa wood... 00:01:19
and honeycomb to reduce the weight. 00:01:23
Wow, these are really light. 00:01:26
Are all the models the same size? 00:01:29
Not at all. 00:01:31
Different tests require different types of models. 00:01:33
For instance, the blended wing body. 00:01:35
It's going to be made in two different scales, 00:01:38
a 1%, like the one I showed you earlier, 00:01:40
and a 14%, like that one on the table over there. 00:01:43
By the way, if this 1% model has a wingspan of 2 1⁄2 feet, 00:01:46
what would be the wingspan of the real airplane? 00:01:50
He doesn't know that I'm a math whiz, too. 00:01:53
That's easy. 00:01:56
1% equals 1 100. 00:01:58
So you just multiply 2.5 by 100, 00:02:00
and you get 250. 00:02:05
You would do great at making a model. 00:02:07
Valoración:
  • 1
  • 2
  • 3
  • 4
  • 5
Eres el primero. Inicia sesión para valorar el vídeo.
Idioma/s:
en
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:
360
Fecha:
28 de mayo de 2007 - 15:33
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
02′ 10″
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:
13.07 MBytes

Del mismo autor…

Ver más del mismo autor

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid