| EVALUATION OF SPIRAL WOUND RIBBON STRUCTURES FOR TRANSPIRATION/FILM COOLING. |
JAN 1968 |
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| Authors:
J. E. Ahern; H. Shimizu; R. A. Bjorklund; MARQUARDT CORP VAN NUYS CALIF
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 | This program included studies in heat transfer, fluid flow, stress analysis, materials and metallurgical evaluation, fabrication studies including tooling development, and the design, fabrication, and test of rocket thrust chambers operating at 1300 to 1800 psia chamber pressure with storable propellants. Spiral wound ribbon nozzle and chamber-nozzle structures were designed and fabricated for test. Serious problems were encountered during fabrication with high-strength materials. Tests were conducted with uncooled heat-sink thrust ... |
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| TRANSPIRATION-FILM COOLING STUDY USING SPIRAL-WOUND RIBBON NOZZLE. |
AUG 1965 |
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| Authors:
J. E. Ahern; A. R. Nagy Jr.; G. A. yankura; MARQUARDT CORP VAN NUYS CALIF ASTRO
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| The design of the test nozzles was finalized based on the analytical studies, the analog results, and the laboratory bench test results. A preliminary evaluation of the effect of mass addition or nozzle performance was completed. Modifications to the spiral winding tool were completed and checked out satisfactorily. Grooving tools for variation of porosity in the test nozzles was completed and checked out. (Author) |
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| TRANSPIRATION-FILM COOLING STUDY USING SPIRAL-WOUND RIBBON NOZZLE. |
MAY 1965 |
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| Authors:
J. E. Ahern; G. A. yankura; A. R. Nagy Jr.; D. R. Ayres; MARQUARDT CORP VAN NUYS CALIF ASTRO
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| The program consists of an analytical and experimental evaluation of the cooling capability of a nozzle design made by the spiral-wound-nozzle method. The following work was accomplished: (1) The analytical study was completed and all equations and methods of solution were selected. The digital computer program was completed and study cases are being run off on the IBM 7094 for evaluating the program characteristics. (2) The laboratory bench test work ... |
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| TRANSPIRATION-FILM COOLING STUDY USING SPIRAL-WOUND RIBBON NOZZLE. |
FEB 1965 |
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| Authors:
J. E. Ahern; A. R. Nagy Jr.; G. A. yankura; D. R. Ayres; MARQUARDT CORP VAN NUYS CALIF ASTRO
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| The program consists of an analytical and experimental evaluation of the cooling capability of a nozzle design made by the spiral-wound-nozzle method. During the first quarter, the following work was accomplished: (1) The analytical study was essentially completed and the equations for the performance study were selected or developed. Sections of the digital computer program were completed and are being checked out. A simple electrical analog was built for checking ... |
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| RESEARCH INVESTIGATION OF TWO-COMPONENT HEAT TRANSFER, |
JUL 1964 |
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| Authors:
A. Acrivos; J. E. Ahern; A. R. Nagy Jr.; MARQUARDT CORP VAN NUYS CALIF
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| A study was made of the hydrodynamics and heat transfer of a two-component stream, 5 to 15% water droplets in air, flowing over a heated, vertical cylinder. In all cases examined, a liquid film formed on the cylinder forward surface; under some conditions water droplets bounced from the surface upon striking it. Hydrodynamic behavior was visually observed and documented by high-speed movies. Heat transfer data were taken at various stations ... |
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