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  • PROPULSION SYSTEMS  (296)
  • AIRCRAFT  (280)
  • 1970-1974  (576)
  • 1
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    Space shuttle auxiliary propulsion system design study. Phase C and E report: Storable propellants, RCS/OMS/APU integration study (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Auxiliary propulsion concepts for application to the space shuttle are compared. Both monopropellant and bipropellant earth storable reaction control systems were evaluated. The fundamental concepts evaluated were: (1) monopropellant and bipropellant systems installed integrally within the vehicle, (2) fuel systems installed modularly in nose and wing tip pods, and (3) fuel systems installed modularly in nose and fuselage pods. Numerous design variations within these three concepts were evaluated. The system design analysis and methods for implementing each of the concepts are reported.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-128819 , MDC-E0708 , MSC-04423-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Development and in-flight performance of the Mariner 9 spacecraft propulsion system (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: On November 14, 1971, Mariner 9 was decelerated into orbit about Mars by a 1334-newton (300-lbf) liquid bipropellant propulsion system. The development and in-flight performance are described and summarized of this pressure-fed, nitrogen tetroxide/monomethyl hydrazine bipropellant system. The design of all Mariner propulsion subsystems has been predicated upon the premise that simplicity of approach, coupled with thorough qualification and margin-limits testing, is the key to cost-effective reliability. The qualification test program and analytical modeling of the Mariner 9 subsystem are discussed. Since the propulsion subsystem is modular in nature, it was completely checked, serviced, and tested independent of the spacecraft. Proper prediction of in-flight performance required the development of three significant modeling tools to predict and account for nitrogen saturation of the propellant during the six-month coast period and to predict and statistically analyze in-flight data. The flight performance of the subsystem was excellent, as were the performance prediction correlations. These correlations are presented.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-129097 , JPL-TM-33-574
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Study of casing treatment stall margin improvement phenomena (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The results of a program of experimental and analytical research in casing treatments over axial compressor rotor blade tips are presented. Circumferential groove, axial-skewed slot, and blade angle slot treatments were tested. These yielded, for reduction in stalling flow and loss in peak efficiency, 5.8% and 0 points, 15.3% and 2.0 points, and 15.0% and 1.2 points, respectively. These values are consistent with other experience. The favorable stalling flow situations correlated well with observations of higher-then-normal surface pressures on the rotor blade pressure surfaces in the tip region, and with increased maximum diffusions on the suction surfaces. Annular wall pressure gradients, especially in the 50-75% chord region, are also increased and blade surface pressure loadings are shifted toward the trailing edge for treated configurations. Rotor blade wakes may be somewhat thinner in the presence of good treatments, particularly under operating conditions close to the baseline stall.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-134552 , R73AEG326
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Operating manual for coaxial injection combustion model (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An operating manual for the coaxial injection combustion model (CICM) is presented as the final report for an eleven month effort designed to provide improvement, to verify, and to document the comprehensive computer program for analyzing the performance of thrust chamber operation with gas/liquid coaxial jet injection. The effort culminated in delivery of an operation FORTRAN IV computer program and associated documentation pertaining to the combustion conditions in the space shuttle main engine. The computer program is structured for compatibility with the standardized Joint Army-Navy-NASA-Air Force (JANNAF) performance evaluation procedure. Use of the CICM in conjunction with the JANNAF procedure allows the analysis of engine systems using coaxial gas/liquid injection.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-129031
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Measurements of sonic boom signatures from flights at cutoff Mach number (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Low Mach number supersonic flight data on sonic boom signatures at cutoff Mach number
    Keywords: AIRCRAFT
    Type: 3D CONF. ON SONIC BOOM RES. 1971; P 243-254
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Theoretical problems related to sonic boom (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Sonic boom in interaction of conical field and plane shock wave
    Keywords: AIRCRAFT
    Type: NASA, WASHINGTON 3D CONF. ON SONIC BOOM RES. 1971; P 27-31
    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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    V/STOL propulsion (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Propulsion technology for STOL and V/STOL commercial aircraft
    Keywords: PROPULSION SYSTEMS
    Type: AIRCRAFT PROPULSION 1971; P 135-168
    Format: text
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  • 9
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    Effects of atmospheric irregularities on sonic-boom propagation. (1972)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: A review is given of information obtained in recent years concerning the effects on sonic-boom signatures of departures of the atmosphere from a perfectly stratified time invariant model. These effects include the observed random variations in boom overpressures from those expected for a stratified atmosphere, the anomalously large and variable rise times, and the occurrence of spiked or rounded waveforms rather than the characteristic N waves. The extent of the variability in data recorded during actual flight tests is summarized in the form of histograms, representing experimentally obtained probability density functions. The physical mechanisms believed to be responsible for the variations and the anomalous features in the signatures are described. These include refraction and subsequent wavefront rippling by turbulence, the possible focusing or defocusing of rays, the formation of caustics, and the phenomenon of wavefront folding, diffraction, and scattering. Recent statistical theories of shock propagation through a turbulent atmosphere proposed by Crow, George and Plotkin, Pierce, Horning, and others are reviewed.
    Keywords: AIRCRAFT
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Flight test of an automatic approach and landing concept for a simulated space shuttle represented by the NASA Convair 990 aircraft (1974)
    In:  CASI
    Details
    Publication Date: 2012-05-22
    Description: Unpowered automatic approaches and landings were conducted to study navigation, guidance, and control problems associated with terminal area, approach, and landing operation for the space shuttle. A Convair 990 aircraft was equipped with a digital flight-control computer connected to the aircraft control systems and displays. The flight tests evaluated, from 11,300 m to touchdown, the performance of a navigation and guidance concept that utilized blended radio/inertial navigation with VOR, DME, and ILS as the ground radio navigation aids. The results from 36 automatic approaches and landings are analyzed. Preliminary results indicate that this concept may provide sufficient accuracy that automatic landing of the unpowered shuttle orbiter can be accomplished on a conventional size runway.
    Keywords: AIRCRAFT
    Type: AGARD Advan. in Control Systems; 9 p
    Format: text
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