Laser Velocimeter Measurements of the Flow Fields Around Single- and Counter-Rotation Propeller Models 850870
A two-component LV system was used to make detailed measurements of the flowfield around both a single-rotation and a counter-rotation propeller/nacelle. The conditions measured for the single-rotation tractor configuration include two different blade angles and two propeller advance ratios, and for the counter-rotation propeller configuration include both pusher and tractor mounts. The measurements show the increasing slipstream velocities and contraction with increasing blade angle and with decreasing advance ratio. Data for the counter-rotation system show that the aft propeller turns the flow in the opposite direction from the front propeller. Additionally, the LV system was used as a diagnostic tool to provide data to explain the large side force measured on the propeller/nacelle at angle-of-attack.
Citation: Dunham, D., Sellers, W., and Elliott, J., "Laser Velocimeter Measurements of the Flow Fields Around Single- and Counter-Rotation Propeller Models," SAE Technical Paper 850870, 1985, https://doi.org/10.4271/850870. Download Citation
Dana Morris Dunham, William L. Sellers, Joe W. Elliott
NASA Langley Research Center Hampton, VA, U.S. Army Structures Laboratory, Langley Research Center, Hampton, VA
General Aviation Aircraft Meeting and Exposition