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  • PROPULSION SYSTEMS  (119)
  • ASTROPHYSICS
  • 1970-1974  (119)
  • 1955-1959
  • 1972  (52)
  • 1970  (67)
Collection
Keywords
Years
  • 1970-1974  (119)
  • 1955-1959
Year
  • 1
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    Thrust vector control study for large /260 inch/ rocket motor applications (1970)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Design concepts of thrust vector control for large rocket motor applications
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-114223 , JANNAF INTERAGENCY PROPULSION COMM. 26TH SOLID PROPULSION MEETING; Jul 14, 1970 - Jul 16, 1970; WASHINGTON, DC; UNITED STATES
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Upper-stage space shuttle propulsion by means of separate scramjet and rocket engines (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A preliminary mission study of a reusable vehicle from staging to orbit indicates payload advantages for a dual-propulsion system consisting of separate scramjet and rocket engines. In the analysis the scramjet operated continuously and the initiation of rocket operation was varied. For a stage weight of 500,000 lb the payload was 10.4 percent of stage weight or 70 percent greater than that of a comparable all-rocket-powered stage. When compared with a reusable two-state rocket vehicle having 50,000 lb payload, the use of the dual propulsion system for the second stage resulted in significant decreases in lift-off weight and empty weight, indicating possible lower hardware costs.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-TN-D-6762 , E-6555
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Internal streamline flow analysis for turbopump inducers under cavitating and noncavitating conditions (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Hydrodynamic internal streamline flow analysis for turboprop inducer blades under cavitating and noncavitating conditions
    Keywords: PROPULSION SYSTEMS
    Type: AIAA PAPER 70-629 , AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, PROPULSION JOINT SPECIALIST CONFERENCE, 6TH; Jun 15, 1970 - Jun 19, 1970; SAN DIEGO, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Evaluation of acoustic cavities for combustion stabilization. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The stabilizing influence of acoustic cavities (quarterwave acoustic resonators) on acoustic modes of combustion instability has been studied. The ability to analytically predict cavity damping was improved. Relatively good agreement between predicted damping and measured stability was demonstrated. Full-scale motor firings were made to evaluate the influence of several parameters on stability. Results from these firings showed that stability was changed, but not dramatically, by changes in the engine operating conditions. Variations in the film-coolant flowrate do not significantly affect cavity stabilization. The ability to stabilize an engine with unconventional cavity configurations was demonstrated.
    Keywords: PROPULSION SYSTEMS
    Type: AIAA PAPER 72-1147 , Joint Propulsion Specialist Conference; Nov 29, 1972 - Dec 01, 1972; New Orleans, LA; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Use of the computer in design of gas turbine mainshaft seals for operation to 500 ft/sec /122 m/sec/ (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Computerized analysis of seal temperature, elastic displacements and seal force balance in iterative design method for gas turbine mainshaft seals
    Keywords: PROPULSION SYSTEMS
    Type: NATIONAL CONFERENCE ON FLUID POWER; Oct 13, 1970 - Oct 15, 1970; CHICAGO, IL; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Velocity diagrams (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: The selection and design of velocity diagrams for axial flow turbines are considered. Application is treated in two parts which includes: (1) mean-section diagrams, and (2) radial variation of diagrams. In the first part, the velocity diagrams occurring at the mean section are assumed to represent the average conditions encountered by the turbine. The different types of diagrams, their relation to stage efficiency, and their selection when staging is required are discussed. In the second part, it is shown that in certain cases the mean-section diagrams may or may not represent the average flow conditions for the entire blade span. In the case of relatively low hub- to tip-radius ratios, substantial variations in the velocity diagrams are encountered. The radial variations in flow conditions and their effect on the velocity diagrams are considered.
    Keywords: PROPULSION SYSTEMS
    Type: Turbine Design and Appl., Vol. 1; p 69-99
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Mariner 9 propulsion subsystem performance during interplanetary cruise and Mars orbit insertion (1972)
    In:  CASI
    Details
    Publication Date: 2006-02-22
    Description: On 14 November 1971 the Mariner 9 1334-N-(300-lbf)-thrust rocket engine was fired for just over 15 min to place the first man-made satellite into orbit about Mars. Propulsion subsystem data gathered during the 5-month interplanetary cruise and orbit insertion are of significance to future missions of this type. Specific results related to performance predictability, zero g heat transfer, and nitrogen permeation, diffusion, and solubility values are presented.
    Keywords: PROPULSION SYSTEMS
    Type: JPL Quarterly Tech. Rev., Vol. 2, No. 1; p 113-122
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    The radiation of sound from an engine exhaust (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Internal combustion engine exhaust system sound radiation, discussing pressure wave effects, energy flux and boundary conditions
    Keywords: PROPULSION SYSTEMS
    Type: ; BROTECHNIKA, NO. 2(
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    TOPS spacecraft propulsion subsystem (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Trajectory correction propulsion subsystem /TCPS/, attitude propulsion subsystem /APS/ and pyrotechnic subsystem of thermoelectric outer planet spacecraft /TOPS/
    Keywords: PROPULSION SYSTEMS
    Type: ; ADEMIE DES SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Swirling base injection for supersonic combustion ramjets. (1972)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Experimental evaluation of the swirling base injection proposed by Swithenbank and Chigier (1969) for application in supersonic combustion ramjets or scramjets. This concept of accelerated mixing in supersonic streams through swirl was tested, but the results indicate that swirl does not produce any enhancement of mixing.
    Keywords: PROPULSION SYSTEMS
    Type: AIAA Journal; 10; Sept
    Format: text
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    NASA TECHNICAL REPORTS
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