spl7a - Propeller Performance 23 Mar 06 Lab 7 Lecture Notes...

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Propeller Performance 23 Mar 06 Lab 7 Lecture Notes A Propellers tested Tests were performed on a Speed-280 motor driving the following propellers: APC 5.1 x 4.5 APC 5.5 x 4.5 APC 6.0 x 4.0 APC 7.0 x 4.0 (narrowed) APC 7.0 x 5.0 (narrowed) The tests were performed over a range of air velocities and motor power levels, the latter controlled via motor voltage. Measurements consisted of thrust, torque, RPM, current, voltage. This allowed the calculation of all relevant operating parameters and efficiencies. Figure 1 shows typical thrust performance measurements for four applied voltages, together with predictions from the motor/prop simulation model. 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 5 10 15 20 25 T [N] 3 Volt 4 Volt 5 Volt 7 Volt V [m/s] Figure 1: Measured thrust versus velocity (symbols), for APC 5.1x4.5 prop, Speed-280 motor. Lines are motor/prop numerical model predictions. The intent here is to validate the numerical model, which is used to generate all the subsequent performance curves. Maximum-Power Thrust
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This note was uploaded on 01/28/2012 for the course AERO 16.01 taught by Professor Markdrela during the Fall '05 term at MIT.

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spl7a - Propeller Performance 23 Mar 06 Lab 7 Lecture Notes...

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