This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Analysis of Counter-Rotating Propeller Systems
Annotation ability available
Sector:
Language:
English
Abstract
A vortex lattice method for the aerodynamic analysis of counter-rotation propellers was developed. This model along with an unsteady Sears analysis for correcting the quasi-steady loadings that are obtained from the vortex lattice model were used to predict the performance of counter-rotation propeller systems. The method developed shows good correlation with experimental results. The investigation into the unsteady loadings on each of the propellers indicates that significant variations in loading occur due to the unsteady flow and due to the propeller blade passage. These variations were found to be as high as 17 percent of the mean value. The parametric studies that were performed indicate that reducing the rear propeller's diameter or rotational speed results in a loss of efficiency.
Recommended Content
Citation
Lesieutre, D. and Sullivan, J., "The Analysis of Counter-Rotating Propeller Systems," SAE Technical Paper 850869, 1985, https://doi.org/10.4271/850869.Also In
References
- Bober, L. J. Mitchell, G. A. “Summary of Advanced Methods for Predicting High Speed Propeller Performance,” NASA TM-81409 1980
- Strack, W. C. Knip, G. Weisbrich, A.L. Godston, J. Bradley, E. “Technology and Benefits of Aircraft Counter Rotation Propellers,” NASA Technical Memorandum 82983 1982
- Biermann, D. Hartman, E.P. “Wind-Tunnel Tests of Four- and Six-Blade Single- and Dual-Rotating Tractor Propellers,” NACA Report No. 747 1942
- Gilman, J. Jr. “Wind Tunnel Tests and Analysis of Two 10-Foot-Diameter Six-Blade Dual-Rotating Tractor Propellers Differing in Pitch Distribution,” NACA TN No. 1634 June 1948
- Platt, R.J. Shumaker, R.A. “Investigation of the NACA 3-(3)(05)-05 Eight-Blade Dual-Rotating Propeller at Foward Mach Numbers to 0.925,” NACA RM L50D21 June 1950
- Lock, C. N. H. “Interference Velocity for a Close Pair of Contra-Rotating Airscrews,” Great Britain Aeronautical Research Committee Reports & Memoranda No. 2084 July 1941
- Theodorsen, T. Theory of Propellers McGraw-Hill New York 1948
- Lesieutre, D.J. “The Theoretical Performance of Counter-Rotating Propeller Systems,” Purdue University May 1985
- Sullivan, J. P. “The Effect of Blade Sweep on Propeller Performance,” AIAA paper No. 77-716 1977
- Chang, L. K. “The Theoretical Performance of High Efficiency Propellers,” Purdue University December 1980
- Miller, C.J. “Optimally Designed Propellers Constrained by Noise,” Purdue University December 1984
- Sears W.R. “Some Aspects of Non-Stationary Airfoil Theory and Its Practical Application,” Journal of the Aeronautical Sciences 8 3 1941