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User's manual for rocket combustor interactive design (ROCCID) and analysis computer program. Volume 1: User's manualThe user's manual for the rocket combustor interactive design (ROCCID) computer program is presented. The program, written in Fortran 77, provides a standardized methodology using state of the art codes and procedures for the analysis of a liquid rocket engine combustor's steady state combustion performance and combustion stability. The ROCCID is currently capable of analyzing mixed element injector patterns containing impinging like doublet or unlike triplet, showerhead, shear coaxial, and swirl coaxial elements as long as only one element type exists in each injector core, baffle, or barrier zone. Real propellant properties of oxygen, hydrogen, methane, propane, and RP-1 are included in ROCCID. The properties of other propellants can easily be added. The analysis model in ROCCID can account for the influence of acoustic cavities, helmholtz resonators, and radial thrust chamber baffles on combustion stability. ROCCID also contains the logic to interactively create a combustor design which meets input performance and stability goals. A preliminary design results from the application of historical correlations to the input design requirements. The steady state performance and combustion stability of this design is evaluated using the analysis models, and ROCCID guides the user as to the design changes required to satisfy the user's performance and stability goals, including the design of stability aids. Output from ROCCID includes a formatted input file for the standardized JANNAF engine performance prediction procedure.
Document ID
19910014917
Document Type
Contractor Report (CR)
Authors
Muss, J. A. (GenCorp Aerojet Sacramento, CA., United States)
Nguyen, T. V. (GenCorp Aerojet Sacramento, CA., United States)
Johnson, C. W. (Software and Engineering Associates, Inc., Carson City NV., United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1991
Subject Category
SPACECRAFT PROPULSION AND POWER
Report/Patent Number
NAS 1.26:187109
NASA-CR-187109
Funding Number(s)
CONTRACT_GRANT: NAS3-25556
PROJECT: RTOP 582-01-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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