Find the speed of rotation of the airstream

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Reference no: EM131515325

Question: 1. At 1.25-m radius on a three-bladed airscrew, the airfoil section has the following characteristics:

Solidity = 0.1; Θ = 29°7'; α = 4°7'; C_L = 0.49; L/D = 50

Allowing for both axial and rotational interference, find the local efficiency of the element

2. The thrust and torque gradings at 1.22-m radius on each blade of a two-bladed airscrew are 2120 N m-1 and 778 N m m-1, respectively. Find the speed of rotation (in rad s-1) of the airstream immediately behind the disc at 1.22-m radius.

Reference no: EM131515325

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