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Forces of Flight - Contenido educativo

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Subido el 28 de mayo de 2007 por EducaMadrid

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NASA Connect segment explainging the fundamentals of flight and the science behind it.

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Hi, I'm Van Hughes. 00:00:00
Hi, and I'm Shelly Canright. 00:00:06
Welcome to NASA Connect, the show that connects you to the world of math, science, and NASA. 00:00:07
Right now, we're coming to you from the Smithsonian National Air and Space Museum located in Washington 00:00:13
D.C. 00:00:17
And Shelly, this is the perfect location to talk about the shape of planes. 00:00:18
Hey, that's right, Van. 00:00:22
If there's one place where you can experience the entire story of flight, this is it. 00:00:23
The National Air and Space Museum is home to 356 aircraft where collectively they reflect 00:00:27
the science of flight. 00:00:33
The museum is home to the first airplane developed by the Wright Brothers. 00:00:34
Notice how the propellers are in the back and the stabilizing wings are in the front. 00:00:38
There's the Fokker T-2, the first plane to cross America coast to coast, and Charles 00:00:43
Lindbergh's Spirit of St. Louis, the first airplane to fly nonstop across the Atlantic. 00:00:47
Then there are other planes which pushed aircraft design even further. 00:00:52
The Bell X-1 is a cross between a plane and a rocket. 00:00:56
It was the first airplane to break the sound barrier. 00:00:59
The Grumman X-29 has backward looking wings. 00:01:02
It goes so fast that the wings were deliberately designed to be unstable in order to enhance 00:01:04
the aircraft's maneuverability. 00:01:09
The museum also houses the Voyager. 00:01:11
Notice how long the wings are. 00:01:13
This wingspan ratio enabled pilots Dick Rutan and Jeanne Yeager to fly nonstop, non-refueled 00:01:15
around the world. 00:01:21
Boy, Shelly, there are a lot of different shapes here. 00:01:23
Imagine what the Wright Brothers would have designed if they had access to today's math 00:01:26
and scientific tools. 00:01:29
Hey, you're right, Van. 00:01:30
You know, it's important to know that science and technology are closely related. 00:01:31
Our need to know and understand drives scientific research and leads to the development of technological 00:01:35
products. 00:01:40
Well, Shelly, that's what our show, Shapes of Flight, is all about today. 00:01:41
You'll see this interaction between math and science technology as we look at the process 00:01:45
of airplane design. 00:01:49
Hey, you know what? 00:01:50
We're going to talk to some NASA researchers who will show us the process and the tools 00:01:51
to research, develop, test, and evaluate airplane designs. 00:01:54
They'll share some challenging problems that they're working on and their solutions, which 00:01:58
might result in configurations for future aircraft. 00:02:02
And later on, you'll be able to interact live with our researchers by calling in or emailing 00:02:05
your questions to the researchers in the NASA Connect studio. 00:02:09
We'll also be joined by students from Jones Magnet Middle School in Hampton, Virginia, 00:02:13
who will conduct a flight experiment and share their data with us. 00:02:17
And there's much more to this program on the Internet. 00:02:21
Whenever you see the NASA Connect website appear on the screen, that will be your clue 00:02:23
to check out the site for more information, fun, and activities relating to our discussion. 00:02:27
All right. 00:02:32
And so then my question to you, have you ever wanted to fly like a bird? 00:02:33
Of course. 00:02:37
You have. 00:02:38
Well, there's one place I know of that's as close to flying like a bird as you can get. 00:02:39
It's in North Carolina, not far from where the Wright Brothers flew the first airplane. 00:02:43
How would you like to go there and learn about the four forces of flight? 00:02:47
Well, sure. 00:02:49
All right. 00:02:50
First up, can you name the four forces? 00:02:51
Okay. 00:02:52
We have drag, lift, weight, and thrust. 00:02:53
Hey, that's right. 00:02:57
Drag is a force which slows the forward movement of an airplane as it pushes through the air. 00:02:59
Lift is created when the air pressure above a wing is less than the pressure below it. 00:03:03
Thrust is created by a power source, which gives an airplane forward motion. 00:03:08
And weight is a force of gravity pulling an airplane down. 00:03:12
Well, you can learn about these four forces in a real hands-on way, like by hang gliding. 00:03:16
Interested? 00:03:21
Well, how long will it take us to get there? 00:03:23
Oh, about as fast as I can snap my fingers. 00:03:24
Well, I'm all ready. 00:03:26
Ready to go. 00:03:27
All right, then, gang. 00:03:28
Well, I'm going to send Van on assignment to Jockey's Ridge State Park in Kitty Hawk, 00:03:29
North Carolina to experience flight firsthand. 00:03:33
In the meantime, I'm going to North Carolina. 00:03:35
Also, I'm going to Dare County to talk with some experimental aviators who are pushing 00:03:37
the envelope of flight, just like our early aviation pioneers. 00:03:41
Let's go. 00:03:44
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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:
324
Fecha:
28 de mayo de 2007 - 16:51
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
03′ 46″
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:
22.76 MBytes

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