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Preliminary Results of an Altitude-Wind-Tunnel Investigation of a Tg-100a Gas Turbine-Propeller Engine: V; Combustion-Chamber Characteristics
Nasa Technical Reports Server (Ntrs)
(Author)
·
Robert M. Gensenheyner
(Author)
·
Joseph J. Berdysz
(Author)
·
Bibliogov
· Paperback
Preliminary Results of an Altitude-Wind-Tunnel Investigation of a Tg-100a Gas Turbine-Propeller Engine: V; Combustion-Chamber Characteristics - Gensenheyner, Robert M. ; Berdysz, Joseph J. ; Nasa Technical Reports Server (Ntrs)
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Synopsis "Preliminary Results of an Altitude-Wind-Tunnel Investigation of a Tg-100a Gas Turbine-Propeller Engine: V; Combustion-Chamber Characteristics"
An investigation to determine the performance and operational characteristics of the TG-1OOA gas turbine-propeller engine was conducted in the Cleveland altitude wind tunnel. As part of this investigation, the combustion-chamber performance was determined at pressure altitudes from 5000 to 35,000 feet, compressor-inlet rm-pressure ratios of 1.00 and 1.09, and engine speeds from 8000 to 13,000 rpm. Combustion-chamber performance is presented as a function of corrected engine speed and.correcte& horsepower. For the range of corrected engine speeds investigated, over-all total-pressure-loss ratio, cycle efficiency, ana the frac%ional loss in cycle efficiency resulting from pressure losses in the combustion chambers were unaffected by a change in altitude or compressor-inlet ram-pressure ratio. The scatter of combustion- efficiency data tended to obscure any effect of altitude or ram-pressure ratio. For the range of corrected horse-powers investigated, the total-pressure-loss ratio an& the fractional loss in cycle efficiency resulting from pressure losses in the combustion chambers decreased with an increase in corrected horsepower at a constant corrected engine speed. The combustion efficiency remained constant for the range of corrected horse-powers investigated at all corrected engine speeds.
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