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Direct Drive Accessories, Feasible by 1980?
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English
Abstract
Direct drive turbine engine control components and airframe accessories are expected to be feasible by 1980. A comparison between a currently operational engine and a projected 1980 engine indicates a weight reduction of 11% and a frontal area reduction of 30% can be achieved by the use of direct drive components and accessories. Instead of a gearbox, the projected engine uses a combination of engine-rotor-driven components (fuel pump, oil pumps, and starter) and hot-gas-turbine-driven accessories (electric generator and hydraulic pump).
The technological advancements that must be accomplished during this decade to realize the projected engine improvement are discussed.
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Citation
Esmeier, E. and Tracy, J., "Direct Drive Accessories, Feasible by 1980?," SAE Technical Paper 700821, 1970, https://doi.org/10.4271/700821.Also In
References
- Tracy J. R. “Lightweight Small-Frontal-Area Accessory and Drive System Program.” Final Report to Naval Air Systems Command under Contract No. N00019-68-C-0428 7 June 1969
- Thompson W. S. “Vulnerability Study of the J57 Non-Afterburner Turbojet Engine (U).” Ballistic Research Labs. Memorandum Report No. 1867 August 1967
- Robinson J. T. “Provisional Vulnerable Area Estimates for a Light Aircraft Power Plant (T63) (U).” Ballistic Research Labs. Memorandum Report No. 1340 April 1961
- Johnson H. T. Mitchell R. R. “Advanced High-Speed Fuel Pump for Small Gas-Turbine Engines.” USAAVLABS Technical Report 69-12. Final Report to US Army Aviation Materiel Labs. under Contract No. DAAJO2-67-C-0037 April 1969