How to Build a Twin Engine Aircraft From Wood (STEM Project)

Описание: In this STEM project we build a twin engine aircraft out of wood that demonstrates the concept of thrust using some electric motors and a couple of plastic propellers. Propellers on a conventional aircraft provide one of the four forces that is responsible for getting aircraft to fly in the air. The four forces that an aircraft experience are:

(1.) Gravity is the downward force on the aircraft and is also called weight.
(2.) Lift is the upward, aerodynamic force generated by a plane's wings that opposes gravity, enabling flight. It is produced by the wing's shape (airfoil) and orientation, creating lower air pressure on top and higher pressure underneath. This pressure difference, combined with the downward deflection of air, generates the necessary force for lift.
(3.) Drag is the aerodynamic force resisting an aircraft's forward motion, acting parallel to and in the same direction as the relative airflow.
(4.) Finally, thrust is forward force that is exerted on the plane and is responsible for the forward motion of the plane that contributes to the lift to make the plane go up into the air. In this STEM project the two electric motors drive two propellers that generate that forward thrust that makes the model wooden plane move forward on the table top as well as spin around on a circle when suspended by a string.

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