Effect of COMBUSTOR-INLET CONDITIONS on Combustion in Turbojet Engines

470217

01/01/1947

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
HIGH combustor-inlet temperatures and pressures and low inlet velocities promote combustion, study of an early Westinghouse 19B combustor shows. Altering any one of the three inlet conditions in an undesirable direction affects combustion the same as an increase in altitude. Unfavorable conditions are said to account for operational limits at altitude.
As altitude increases, combustion efficiency drops and resonance develops; the maximum temperature rise obtainable and the fuel-air ratio at which it occurs decrease. The more adverse the inlet conditions, the greater their detrimental effect on combustion.
In accelerating at a given altitude, there may be a range of engine speeds where operation is impossible because increased inlet velocities more than counterbalance beneficial effects of increased inlet temperatures and pressures.
Meta TagsDetails
DOI
https://doi.org/10.4271/470217
Pages
14
Citation
CHILDS, J., McCAFFERTY, R., and SURINE, O., "Effect of COMBUSTOR-INLET CONDITIONS on Combustion in Turbojet Engines," SAE Technical Paper 470217, 1947, https://doi.org/10.4271/470217.
Additional Details
Publisher
Published
Jan 1, 1947
Product Code
470217
Content Type
Technical Paper
Language
English