NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A computer program for performance prediction of tripropellant rocket engines with tangential slot injectionFor the development of a Heavy Lift Launch Vehicle (HLLV) several engines with different operating cycles and using LOX/Hydrocarbon propellants are presently being examined. Some concepts utilize hydrogen for thrust chamber wall cooling followed by a gas generator turbine drive cycle with subsequent dumping of H2/O2 combustion products into the nozzle downstream of the throat. In the Space Transportation Booster Engine (STBE) selection process the specific impulse will be one of the optimization criteria; however, the current performance prediction programs do not have the capability to include a third propellant in this process, nor to account for the effect of dumping the gas-generator product tangentially inside the nozzle. The purpose is to describe a computer program for accurately predicting the performance of such an engine. The code consists of two modules; one for the inviscid performance, and the other for the viscous loss. For the first module, the two-dimensional kinetics program (TDK) was modified to account for tripropellant chemistry, and for the effect of tangential slot injection. For the viscous loss, the Mass Addition Boundary Layer program (MABL) was modified to include the effects of the boundary layer-shear layer interaction, and tripropellant chemistry. Calculations were made for a real engine and compared with available data.
Document ID
19880016197
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dang, Anthony
(Software and Engineering Associates, Inc. Carson City, NV, United States)
Nickerson, Gary R.
(Software and Engineering Associates, Inc. Carson City, NV, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1987
Publication Information
Publication: Johns Hopkins Univ., The 24th JANNAF Combustion Meeting, Volume 2
Subject Category
Spacecraft Propulsion And Power
Accession Number
88N25581
Funding Number(s)
CONTRACT_GRANT: NAS8-36863
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available