Accession Number : ADA096845


Title :   Dual Nozzle Aerodynamic and Cooling Analysis Study.


Descriptive Note : Final rept. 9 Jul 79-31 Oct 80,


Corporate Author : AEROJET LIQUID ROCKET CO SACRAMENTO CA


Personal Author(s) : Meagher,Gregory M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a096845.pdf


Report Date : 27 Feb 1981


Pagination or Media Count : 262


Abstract : During this study, analytical models to predict performance and operating characteristics of dual-nozzle concepts have been developed and improved. Aerodynamic models are now available to define flow characteristics and bleed requirements for both the dual-throat and dual-expander concepts. Advanced analytical techniques were utilized to provide quantitative estimates of the bleed flow, boundary layer, and shock effects within dual-nozzle engines. Thermal analyses were performed to define cooling requirements for baseline configurations, and special studies of unique dual-nozzle cooling problems defined feasible means of achieving adequate cooling. As a result, analytical models for the dual-throat concept are now in place which can be used in conjunction with a hot-fire experimental verification program to define the performance capabilities and design characteristics of this advanced engine concept. Though less developed than those for the dual throat, and though they have not been substantiated with empirical aerodynamic correlations, similar analysis techniques for the dual-expander concept are now available. A summary of these results is contained in the following paragraphs, and the technical details are provided in the technical discussion of this report. (Author)


Descriptors :   *COMPUTER AIDED DESIGN , *THRUSTERS , *SOLID PROPELLANT ROCKET ENGINES , *THROATS(EQUIPMENT) , HEAT TRANSFER , COMPUTERIZED SIMULATION , COOLING , FLOW FIELDS , THERMAL ANALYSIS , MATHEMATICAL ANALYSIS , AERODYNAMIC CHARACTERISTICS , GEOMETRY , DUAL MODE , ROCKET NOZZLES


Subject Categories : Solid Propellant Rocket Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE