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Propulsive Efficiency and Aircraft Drag Determined From Steady State Flight Test Data
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 01, 1985 by SAE International in United States
Annotation ability available
A method is presented which permits determination of of propulsive efficiency and airplane drag terms from steady level flight speed-power data. The method is based on a computer formulation of Lock's equivalent propeller model which makes it suitable for use in parameter identification. The results are in the form of coefficients of polynomials defining the airplane and the propeller. These coefficients, determined from steady flight data, then permit easy calculation of propeller characteristics and airplane performance for other flight conditions. The method is particularly applicable to performance prediction and to simulation because the airplane and propeller are represented by a simple analytical model rather than by tables or graphs.
The method is described, computer formulation of the propeller model is verified with wind tunnel data, airplane and propeller characteristics are determined from actual flight test data, and predicted power is compared with measured power for a given flight test condition.
CitationBull, G. and Bennett, G., "Propulsive Efficiency and Aircraft Drag Determined From Steady State Flight Test Data," SAE Technical Paper 850872, 1985, https://doi.org/10.4271/850872.
- Bull, G and Bridges, P. D. A Method For Flight-Test Determination of Propulsive Efficiency and Drag, Journal of Aircraft, Vol. 22, No. 3. March 1985.
- Bull, G and Bridges, P. D. Investigation of Flight Test Methods For Measuring Performance of General Aviation Aircraft, Mississippi State University, Miss. MSSU-EIRS-ASE-83-2, May 1983.
- Sabzehparvar, Mehdi, Determination of Aerodynamic and Propulsion Parameters of General Aviation Aircraft Using Steady State Flight Test Data, Phd Thesis, Department of Aerospace Engineering, Mississippi State University, 1984.
- Sabzehparvar, M. and Bennett, G. Determination of Aircraft Propulsive Efficiency and Drag Using Steady State Measurements and Lock's Propeller Model, AIAA-84-2500, November 1984.
- Lock, C. N. H. A Graphical Method of Calculating The Performance of An Airscrew, British A. R. C. Report and Memoranda 1675, 1935.
- Lock, C. N. H. Application of Goldstein's Theory to the Practical design of Airscrews, British A. R. C. Report and Memoranda 1377, 1930.
- Lock, C. N. H. Tables For Use in an Improved Method of Airscrew Strip Theory Calculation, British A. R. C. Report and Memoranda 1674, 1934.
- Lock, C. N. H. A Graphical Method of Calculating The Performance of An Airscrew, British A. R. C., Report and Memoranda 1849, 1938.
- Haines, A. B., A Comparison of Aerofoil Data for use in Single Radius Propeller Calculations, British A. R. C. Report and Memoranda 2188, 1947.
- Driggs, I. H. Simplified Propeller Calculations J. Aeronautical Sciences, Vol. 5, No. 9, July 1938.
- Freeman, Hugh B. Comparison of Full Scale Propellers Having R. A. F.-6 And Clark-Y Airfoil Sections, NACA Report 378, 1943.
- Borst, H. V. Summary of Propeller Design Procedures And Data Vol. I Aerodynamic Design And Installation, USAAMRDL Tech. Rept. 73-34A November 1973.