What is the difference in atmospheric travel and that of space?

I need to understand the basic concept of the difference between atmospheric travel and space travel. It may include vehicle design, forces, time frames, acceleration, etc. . Helpful topics might be:

Lift, Thrust, Drag, Gravity are terms you should investigate

Newton's Theory of Relativity

Konstantin Tsiolkovsky

Robert Goddard

Sputnik 1

Laika

Explorer 1

NASA - transport designWhat is the difference in atmospheric travel and that of space?In the atmosphere (any atmosphere), you need to consider 4 properties: Thrust, Drag, Lift, and Weight.



The vehicle must be aerodynamic to eliminate as much drag as possible. Tear-drop shapes are about the best shapes to for this. You need to make the vehicle light in weight, so that the lift the vehicle generates (either with wings, or by body shape) is enough to overcome weight at certain speeds. To generate those speeds, you need to have minimum thrust (either a rocket, jet, or prop engine). All planes, helicopters, birds, and people in hang gliders have to balance these 4 forces in order to fly.



In space, the shape of the vehicle doesn't matter. Look at the Lunar Module the astronauts landed on the moon with - a very delicate, un-aerodynamic ship - it's critical factor was weight. It *couldn't* generate lift - the moon doesn't have an atmosphere to do that with, so it relied on the engines. In a plane, you manipulate the airflow to control the attitude of the plane - you raise the elevators to go up, you push the rudder to the right to turn right. The airflow around the plane is interrupted, and pushes back - turning or raising the plane.



In space, there's nothing to push against... so, you fire rockets. To turn around, you fire a small rocket on one side up, you fire an identical rocket on the other side down, and the ship turns around. If you want to turn, you need to point the vehicle the direction you want to go, and fire the main engine to push you in that direction.



In short: air vehicles use the air itself to fly, and to control it's direction. Space vehicles are more self-contained - they carry their own 'force' in the form of fuel to control it's flight, using attitude control jets to steer, and main engines to control speed.What is the difference in atmospheric travel and that of space?
You are going to have to pay for that class.What is the difference in atmospheric travel and that of space?REPOST! should I quote what I said before?What is the difference in atmospheric travel and that of space?
Sounds like homework to me.



Therefore, I will limit my answer in scope. And, I'll give you one hint:

There is air in the atmosphere. There is no air in space. The associated effects of lift and drag, therefore, are quite different between air and space.What is the difference in atmospheric travel and that of space?It is too bad the professor or teacher doesn't give you books.



The Exosphere is where space begins. That is 500 Km above the surface of the earth. There is no oxygen to burn in outer space, thus travel through outer space requires rocket fuel.



The Troposphere (up to 11 km above the earth) and the Stratosphere (Up to 50 KM above the earth) are the promary zones where atmospheric travel takes place. Oxygen is available and the air at these levels lift the wings of the planes, keeping them up. The higher you get, the less air, the wings cannot be supported.



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