A rotor model of radius 0.40 m produces the desired aerodynamic performance while…
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics
Problem
A rotor model of radius 0.40 m produces the desired aerodynamic performance while rotating at 300 rpm. A full-size rotor, geometrically similar and of radius 4.0 m, is to be tested under dynamically similar conditions in the same air. Approximately what speed should the full-size rotor be run at?
(a) 30rpm
(b) 9.5rpm
(c) 3rpm
(d) 95rpm