TURBOFAN-RAMJET ENGINE STUDIES. VOLUME VI -- EXIT FLOW INTERACTION STUDIES.
Abstract
Final performance of a supersonic turbofan-ramjet engine depends on its exhaust nozzle characteristics that are influenced by the quality of the primary and annular flow mixing in the combustion chamber. The phenomenon of chamber mixing with two cold flows of the same stagnation temperature was analyzed experimentally in a model with a chamber diameter of 11.82 inches. The variable parameters were the primary/annular total pressure ratio, the feed pressure, and the primary nozzle length. Knowledge of exit nozzle operation also is important for supersonic powerplants. An experimental demonstration on a small-scaled model with a chamber diameter of 2.758 inches showed the effects of various primary and annular flow regimes with the same stagnation temperature, but different stagnation pressures on the exhaust nozzle discharge and impulse coefficients. The exit-flow-interaction test results were applied to the three combination turbofan-ramjet engines. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1964
- Accession Number
- AD0479801
Entities
People
- P. Chaulin
- P. Sandre