A cruising propeller-powered aircraft has a drag power curve P r = a v 3 + bW 2 / v , with a and b constants, v the airplane speed and W its weight. What is the expected required power increase ∆ P r for a coordinated banked turn with roll angle ϕ if altitude and speed are to be preserved?

Question

A cruising propeller-powered aircraft has a drag power curve  P r  =  a v 3  +  bW 2 / v , with  a  and  b  constants,  v  the airplane speed and  W  its weight. What is the expected required power increase ∆ P r  for a coordinated banked turn with roll angle ϕ if altitude and speed are to be preserved?

Answer

∆ P r  = ( bW 2 / v ) ·tan 2  ϕ

Answer

∆ P r  = − ( bW 2 / v ) ·cos 2  ϕ

Answer

∆ P r  = ( bW 2 / v ) ·1/(cos 2  ϕ)

Answer

∆ P r  = ( bW 2 / v ) ·cos 2  ϕ

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A cruising propeller-powered aircraft has a drag power curve P r = a v 3 + ...

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