swallow plane

 Today i have created a new glider. 

       Here is the video about it   : 

Description : 

                This gliders name is swallow plane. 

   *Aircraft - An aircraft is a man made object which can fly. There are two types of aircraft lighter than air aircraft and heavier than air aircraft.

  * Lighter than air aircraft - When low density air contained air craft flys it is known as lighter than air aircraft.   Ex Blimps

  * Heavier than air air craft - When high density air contained air craft fly's it is known as heavier than air aircraft.  Ex : Airplanes . In heavier than air aircraft there are two types : with engine powered aircraft , and without engine.

 * powered aircraft -   Aircraft which have engine to fly is known as powered aircraft.

There are four forces which act on the plane .

* Thrust

* Lift

* Drag

* Weigh

Now i will explain you about the four forces.

First lets move onto thrust.

Thrust - A force that only applies on powered aircraft. Which makes the plane move forward.

Lift     - A force that makes the  plane go upward.

Drag   - A force that pulls the plane to slow down.

Weigh - The force which pulls the plane down.