Performance Study of a Ducted Fan System
Performance Study of a Ducted Fan System
- New search for: Abrego, Anita I.
- New search for: Bulaga, Robert W.
- New search for: Rutkowski, Michael
- New search for: Abrego, Anita I.
- New search for: Bulaga, Robert W.
- New search for: Rutkowski, Michael
An experimental investigation was completed in the NASA Ames 7- by 10-Foot Wind Tunnel with the objective of determining the performance characteristics of a ducted fan. The model was an annular duct with a 38-in diameter, 10-in chord, and a 5-bladed fixed-pitch fan. Model variations included duct angle of attack, exit vane flap length, flap deflection angle, and duct chord length. Duct performance data were obtained for axial and forward flight test conditions. Axial flow test data showed figure of merit decreases with increasing advance ratio. Forward flight data showed an increasing propulsive force with decreasing duct angle of attack. Exit vane flap deflection angle and flap chord length were shown to be an effective way of providing side force. Extending the duct chord did not effect the duct performance.
Document information
Performance Study of a Ducted Fan System
American Helicopter Society Aerodynamics, Acoustics and Test and Evaluation Technical Specialists Meeting ; 2002 ; San Francisco, CA, United States
2002-01-01
Preprint
No indication
English
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