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Development of Pneumatic Thrust Deflector
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English
Abstract
Technology required to develop a pneumatic thrust deflector was investigated. Pneumatic thrust deflection is achieved by blowing a thin sheet of air tangentially across a curved surface adjacent to the slipstream produced by a turbojet engine. Controlling the angle of thrust deflection requires no moving surfaces because the angle of deflection varies with the momentum of the jet sheet. Increasing the momentum of the jet sheet results in an increase in the thrust deflection angle. A wide range of thrust deflection, through 60 deg, was achieved in a series of investigations using a small turbojet simulator and the J402-CA-400 turbojet engine. This mechanically simple pneumatic system can provide high performance aircraft with a thrust deflecting capability for increased maneuverability, heavy lift capability, or short takeoff and landing (STOL) capability.
Authors
Citation
Harris, M. and Nichols, J., "Development of Pneumatic Thrust Deflector," SAE Technical Paper 841558, 1984, https://doi.org/10.4271/841558.Also In
References
- Englar R.J. et al. “Circulation Control Technology Applied to Propulsive High Lift Systems,” SAE Paper No. 841497 1984 SAE Aerospace Congress and Exposition Long Beach, California 15-18 Oct 1984
- Harris M.J. et al. “Development of the Circulation Control Wing/Upper Surface Blowing Powered-Lift System for STOL Aircraft,” ICAS Paper No. 82-6.5.1 13th Congress of International Council of Aeronautical Sciences/AIAA Aircraft Systems and Technology Conference Seattle, Washington 22-27 Aug 1982
- Huson G.G. “Investigation of Parameters Influencing the Deflection of a Thick Wall Jet by a Thin Wall Jet Coflowing over a Rounded Corner,” David Taylor Naval Ship R&D Center Report DTNSRDC/ASED-83/10 Dec 1983
- Harris M.J. “Investigation of a Pneumatic Thrust Deflector Based on Circulation Control Technology,” David Taylor Naval Ship R&D Center Report DTNSRDC/ASED-79/01 Jan 1979
- Harris M.J. “Optimizing the Thrust Deflecting Surface for the Pneumatic Thrust Deflector,” DTNSRDC/ASED-84/02 Mar 1984