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Flashcards in Finite wings Deck (9)
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1
Q

Stall incidence

A

beyond the stall incidence, Cl decreases with increasing incidence. In a stall, the boundary layer over the upper surface is unable to follow the aerofoil’s surface

2
Q

variation of lift coefficient with incidence

A
3
Q

stall speed

A

Stalling speed increases with height as the air density decreases

4
Q

variation of drag coefficient with lift coefficient

A
5
Q

Calibration of aircraft instrumentation

A

Aircraft instrumentation is often calibrated in terms of Equivalent Air Speed to prevent confusion due to the variation of speed with altitude

6
Q

True Air Speed

A

the actual speed of the aircraft through the air

7
Q

Equivalent Air Speed

A

the speed of an aircraft at sea level which has the same dynamic pressure as an aircraft flying at TAS at altitude

8
Q

Equivalent air speed equation

A
9
Q

High lift devices

A

Can be used to increased Clmax

increasing Clmax reduces the stall speed

located on the wing trailing and leading edges