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The advanced ratio is given by _______________(a) J=\(\frac{D}{nV}\)(b) J=\(\frac{nV}{D}\)(c) J=\(\frac{V}{nD}\)(d) J=\(\frac{n}{VD}\)I got this question during an online exam.My question is from Climb and Descent Performance with Mixed Power Plants in section Climb and Descent Performance of Aircraft Performance

Answer»

Right choice is (c) J=\(\frac{V}{nD}\)

The explanation: The advanced ratio is GIVEN by J=\(\frac{V}{nD}\) where J is advance ratio, V is velocity and D is PROPELLER DIAMETER and n is rotational speed. Propeller efficiency is depended on advanced ratio.



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