forces acting on an airplane![click to hear](/images/speaker.jpg)
Physical phenomena that affect the movement of an aircraft in flight.
weight ![click to hear](/images/speaker.jpg)
Force resulting from the effect of the Earth’s gravity acting on the aircraft’s mass; the force of the engines must overpower this to keep the aircraft in the air.
drag ![click to hear](/images/speaker.jpg)
Force opposite to thrust that creates resistance to the aircraft’s forward movement and must be reduced.
lift ![click to hear](/images/speaker.jpg)
Force exerted on an aircraft’s wings to keep it in the air when a certain forward speed is reached.
thrust ![click to hear](/images/speaker.jpg)
Force developed by the engine’s propeller pulling it forward; in jet aircraft, thrust is created by the force of the ducts.