Aerodynamics

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     Reference: ACS PA.III.A. PHAK Chapter 3

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​There are, four force’s that act on an aircraft during straight-and-level and un-accelerated flight.

 

• Thrust –is the forward force from the powerplant and is opposite of drag.

• Drag – is the rearward force caused by disrupted airflow from the wings, fuselage, etc. and is opposite of thrust.

• Weight – is the downward force caused by gravity and additional items such as fuel, cargo, crew, etc. and is opposite of lift.

• Lift – is the upward force created by the airflow around the wings, and is opposite of weight.