NDLI: Developing a gas rocket performance prediction technique

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Developing a gas rocket performance prediction technique

Content Provider	NASA Technical Reports Server (NTRS)
Author	Moon, L. F. Stepien, W. R. Morgenthaler, J. H.
Copyright Year	1974
Description	A simple, semi-empirical performance correlation/prediction technique applicable to gaseous and liquid propellant rocket engines is presented. Excellent correlations were attained for over 100 test firings by adjusting the computation of the gaseous mixing of an unreactive, coaxial jet using a correlation factor, F, which resulted in prediction of the experimental combustion efficiency for each firing. Static pressure, mean velocity and turbulence intensity in the developing region of non-reactive coaxial jets, typical of those of coaxial injector elements were determined. Detailed profiles were obtained at twelve axial locations (extending from the nozzle exit for a distance of five diameters) downstream from a single element of the Bell Aerospace H2/O2 19-element coaxial injector. These data are compared with analytical predictions made using both eddy viscosity and turbulence kinetic energy mixing models and available computer codes. Comparisons were disappointing, demonstrating the necessity of developing improved turbulence models and computational techniques before detailed predictions of practical coaxial free jet flows are attempted.
File Size	4877834
Page Count	137
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19750005855
Archival Resource Key	ark:/13960/t6f23qw14
Language	English
Publisher Date	1974-10-28
Access Restriction	Open
Subject Keyword	Spacecraft Propulsion And Power Free Jets Propulsion System Performance Jet Flow Turbulence Models Performance Prediction Combustion Liquid Propellant Rocket Engines Combustion Chambers Turbulent Mixing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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