The four forces of flight

There are four forces that act on aircraft: lift, weight, thrust, and drag.

・Lift: a force generated by wings that holds an airplane in the air

・Weight: a force caused by gravity that pulls an airplane down

・Thrust: a force generated by propellers or jet engines that moves an airplane forward

・Drag: a force caused by air friction holding an airplane back.

Lift opposes weight and thrust opposes drag. If lift is greater than weight, the airplane moves upwards. If thrust is greater than drag, the airplane moves forwards. Lift depends on thrust. Therefore, without thrust, the airplane cannot maintain lift.







You may also like