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  • Other Sources  (13)
  • AERODYNAMICS  (5)
  • SPACECRAFT INSTRUMENTATION  (5)
  • NAVIGATION  (3)
  • 1
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    VORTEX MHD GENERATOR RESEARCH AND DEVELOPMENT PROGRAM. (1961)
    In:  CASI
    Details
    Publication Date: 2008-08-25
    Description: Vortex magnetohydrodynamic generator
    Keywords: NAVIGATION
    Type: ER-4421
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    VORTEX MHD GENERATOR RESEARCH AND DEVELOPMENT PROGRAM. (1961)
    In:  CASI
    Details
    Publication Date: 2008-08-25
    Description: Vortex magnetohydrodynamic power generator
    Keywords: NAVIGATION
    Type: ER-4540
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  • 3
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    VORTEX MHD GENERATOR RESEARCH AND DEVELOPMENT PROGRAM. (1961)
    In:  CASI
    Details
    Publication Date: 2012-03-08
    Description: Vortex magnetohydrodynamic power generator, alkali metal carbonates to seed combustion plasmas
    Keywords: NAVIGATION
    Type: ER-4322
    Format: text
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  • 4
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    Applied transonics at Grumman (1989)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A review of several applications of Computational Fluid Dynamics (CFD) to various aspects of aerodynamic design recently carried out at Grumman is presented. The emphasis is placed on project-oriented applications where the ease of use of the methods and short start-to-completion times are required. Applications cover transonic wing design/optimization, wing mounted stores load prediction, transonic buffet alleviation, fuselage loads estimation, and compact offset diffuser design for advanced aircraft configurations. Computational methods employed include extended transonic small disturbance (automatic grid embedding) formulation for analysis/design/optimization and a thin layer Navier-Stokes formulation for both external and internal flow analyses.
    Keywords: AERODYNAMICS
    Type: NASA, Langley Research Center, Transonic Symposium: Theory, Application, and Experiment, Volume 1, Part 1; p 133-152
    Format: application/pdf
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  • 5
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    The Voyager Cosmic Ray Experiment (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The Voyager Cosmic Ray Experiment includes seven dE/dx-E telescopes to measure the energy and charge of particles with atomic numbers from 1 to 26 in the energy range 1-500 MeV/nucleon and to measure electron energy in the range from 3 to 110 MeV. Isotopic composition of hydrogen through sulfur in the range up to 75 Mev/nucleon can also be resolved. The electronic systems include a dual-gain, charge sensitive preamplifier, 4096-channel pulse height analyzers for three parameter analysis of selected events, and an event type readout polling scheme to maximize the use of available telemetry space and to enhance the occurrence of rare events in the data. Details of the detector, electronic and mechanical design are presented.
    Keywords: SPACECRAFT INSTRUMENTATION
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  • 6
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    Hypersonic forebody lift-induced drag (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The dominance of body-like shapes for hypersonic vehicles places emphasis on better understanding of pertinenet body flow physics. Computational methods are implemented to enhance the knowledge of drag components generated by the production of lift forces at hypersonic speeds. Three forebody shapes are examined to identify the effects related to body shape parameters. A Navier-Stokes code and classical Newtonian theory code provide predictions of the polar shapes upon which conclusions are drawn. In particular, it is noted that hypersonic body polar shapes are somewhat irregular; the result of incidence-induced form drag. Test data which supports this finding is identified. The means for reducing hypersonic body lift-induced drag are also identified, along with applied computational schemes that can reduce the cost of a configuration design program.
    Keywords: AERODYNAMICS
    Type: SAE PAPER 892345
    Format: text
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  • 7
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    Investigation of side inlets at supersonic speeds (1947)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Keywords: AERODYNAMICS
    Type: NACA Conf. on Aerodyn. Probl. of Transonic Airplane Design; p 53-57
    Format: application/pdf
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  • 8
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    The results of the in-flight attitude sensor calibration for the Arthur Holly Compton Gamma Ray Observatory (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The Arthur Holly Compton Gamma Ray Observatory (GRO) was launched by the shuttle Atlantis in April 1991. This paper presents the results of the attitude sensor calibration that was performed during the early mission. The GSFC Flight Dynamics Facility (FDF) performed an alignment calibration of the two fixed-head star trackers (FHST's) and two fine Sun sensors (FSS's) on board Compton GRO. The results show a 27-arcsecond shift between the bore sights of the FHST's with respect to prelaunch measurements. The alignments of the two FSS's shifted by 0.20 and 0.05 degree. During the same time period, the Compton GRO science teams performed an alignment calibration of the science instruments with respect to the attitude reported by the on board computer (OBC). In order to preserve these science alignments, FDF adjusted the overall alignments of the FHST's and FSS's, obtained by the FDF calibration, such that when up linked to the OBC, the shift in the OBC-determined attitude is minimized. FDF also calibrated the inertial reference unit (IRU), which consists of three dual-axis gyroscopes. The observed gyro bias matched the bias that was solved for by the OBC. This bias drifted during the first 6 days after release. The results of the FDF calibration of scale factor and alignment shifts showed changes that were of the same order as their uncertainties.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Flight Mechanics(Estimation Theory Symposium, 1992; p 39-54
    Format: application/pdf
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  • 9
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    Recent Goddard Space Flight Center (GSFC) experience with on-orbit calibration of attitude sensors (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The results of on-orbit calibration for several satellites by the flight Dynamics Facility (FDF) at GSFC are reviewed. The examples discussed include attitude calibrations for sensors, including fixed-head star trackers, fine sun sensors, three-axis magnetometers, and inertial reference units taken from recent experience with the Compton Gamma Ray observatory, the Upper Atmosphere Research Satellite, and the Extreme Ultraviolet Explorer calibration. The methods used and the results of calibration are discussed, as are the improvements attained from in-flight calibration.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: IAF PAPER 92-0049
    Format: text
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  • 10
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    Aerodynamic principles for the design of jet- engine induction systems (1956)
    In:  CASI
    Details
    Publication Date: 2019-05-23
    Description: Jet engine induction systems investigations and relationship of air inlets, drag, airframe, pressure recovery, flow and interferences
    Keywords: AERODYNAMICS
    Type: NACA-RM-A55F16
    Format: application/pdf
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