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Performance Flight Testing of a Single Engine Powered Lift Aircraft
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English
Abstract
This paper describes a low cost flight test program and presents the results for evaluating the performance of the Ball-Bartoe JETWING upper surface blown powered lift aircraft with and without the thrust augmenting ejector installed. The program included a ground test series for thrust calibration by dynamometer and by measuring the velocity profile with laser velocimeter followed by performance flight testing to obtain lift coefficient vs. angle of attack and lift coefficient vs. excess thrust coefficient. Stability and handling characteristics were also evaluated. Flight test results when compared with wind tunnel data generally showed good agreement although the lift curve slope obtained by flight test is somewhat less than that from wind tunnel primarily testing because of inaccuracies involved in measuring angle of attack in flight.
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Citation
Kimberlin, R., "Performance Flight Testing of a Single Engine Powered Lift Aircraft," SAE Technical Paper 872314, 1987, https://doi.org/10.4271/872314.Also In
References
- “Jetwing from Colorado,” Air International 14 2 69 71 Fine Scroll Limited London, England February 1978
- Kimberlin, R.D. “Performance Flight Test Evaluation of the Ball-Bartoe JETWING STOL Research Aircraft,” Proceedings of the Eleventh Annual Symposium of Society of Flight Test Engineers Atlanta August 1980
- Kimberlin, R.D. “A Flight Test Evaluation of the Ball-Bartoe Jetwing Propulsive Lift Concept,” UTSI Report 81-1 The University of Tennessee Space Institute Tullahoma, Tennessee 1 July 1981
- Kimberlin, R.D. Solies, U.P. Sinha, A.K. “A Flight Test Evaluation and Analytical Study of the Ball-Bartoe Jetwing Propulsive Lift Concept without Ejector,” UTSI Report 82/17 The University of Tennessee Space Institute Tullahoma, Tennessee 1 October 1982