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  • Other Sources  (6)
  • ASTRONOMY  (4)
  • SPACE TRANSPORTATION  (1)
  • SPACECRAFT DESIGN, TESTING AND PERFORMANCE  (1)
  • 1975-1979  (6)
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  • Other Sources  (6)
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  • 1
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    Subsonic stability and control characteristics of a 0.015-scale (remotely controlled elevon) model 44-0 of the space shuttle orbiter tested in the NASA/ARC 12-foot pressure tunnel (LA66) (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The investigation was conducted in the NASA/Ames Research Center 12-foot Pressure Tunnel. The model was a Langley-built 0.015-scale SSV orbiter model with remote independently operated left and right elevon surfaces. The objective of the test was to generate a detailed aerodynamic data base for the current shuttle orbiter configuration. Special attention was directed to definition of nonlinear aerodynamic characteristics by taking data at small increments in angle of attack, angle of sideslip, and elevon position. Six-component aerodynamic force and moment and elevon position data were recorded over an angle of attack range from -4 deg to 24 deg at angles of sideslip of 0 deg and + or - 4 deg. Additional tests were made over an angle of sideslip range from -6 deg to 6 deg at selected angles of attack. The test Mach numbers were 0.22 and 0.29 and the Reynolds number was varied from 2.0 to 8.5 million per foot.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-147621 , DMS-DR-2281
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Astronomical applications of grazing incidence telescopes with polynomial surfaces (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The report has examined the claim that grazing incidence telescopes having surfaces described by generalized equations have image characteristics superior to those of the paraboloid-hyperboloid and Wolter-Schwarzschild configurations. With emphasis on specific applications in solar and cosmic X-ray/EUV astronomy, raytracing has shown that in many cases there is no advantage in the polynomial design, and in those cases where advantages are theoretically to be expected, the advantages are outweighed by practical considerations.
    Keywords: ASTRONOMY
    Type: Space optics: Imaging X-ray optics workshop; May 22, 1979 - May 24, 1979; Huntsville, AL
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Layered synthetic microstructures - Properties and applications in X-ray astronomy (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Refinements in vacuum deposition technology have made it possible to produce structures in which two materials are arranged in alternating layers of uniform thickness and as thin as 5 A. Such structures act as Bragg diffractors or 'artificial crystals' for X-rays, as well as they may be regarded as multilayer interference coatings. A dynamical theory is used to show how the properties of layered synthetic microstructures are dependent on the layer materials and thicknesses and how these properties can be tailored to specific applications. Laboratory results at various X-ray wavelengths are presented. In particular, specific X-ray astronomy applications in spectroscopy, imaging, polarimetry and laboratory calibration are discussed.
    Keywords: ASTRONOMY
    Type: Space optics: Imaging X-ray optics workshop; May 22, 1979 - May 24, 1979; Huntsville, AL
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    The Space Shuttle Orbiter approach and landing tests - A correlation of flight and predicted performance data (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper represents the results of a program in which a flight test vehicle was flown for a limited number of flights. The vehicle was the Space Shuttle Orbiter. The total free flight time for the entire flight test program was less than half an hour. The flight regime tested represented only the approach and landing phase of the vehicle's planned flight capability. The program relied heavily on an extensive wind tunnel test program to predict the aerodynamic performance data over the complete flight range, as well as to predict data tolerances. During the flight test program, short maneuvers performed were to provide flight motion data. A data extraction program was developed to produce flight derived aerodynamic performance data in coefficient form from the motion data. The resultant flight test data was correlated with the predicted data and fell within the predicted data tolerances for all phases of the subsonic flight test regime, including ground effects.
    Keywords: SPACE TRANSPORTATION
    Type: AIAA PAPER 78-793 , Aerodynamic Testing Conference; Apr 19, 1978 - Apr 21, 1978; San Diego, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    S056 X-ray telescope experiment on the Skylab Apollo Telescope Mount (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: This paper describes the S056 X-ray instrument which was carried aboard the Skylab Apollo Telescope Mount as part of the solar instrument cluster. The instrument, which was built at the NASA Marshall Space Flight Center, consisted of a glancing incidence X-ray telescope to record solar images in the 6-40-A region, together with an X-ray event analyzer to monitor the total solar soft X-ray flux in several wavelength bands. The X-ray telescope used film as a recording medium and thin foil filters to isolate specific wavelength bands. The instrument subsystems are described in detail and typical results presented.
    Keywords: ASTRONOMY
    Type: Applied Optics; 16; Apr. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Film calibration for the Skylab/ATM S-056 X-ray telescope (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The sensitometry and film calibration effort for the Skylab/ATM S-056 X-ray telescope is summarized. The apparatus and procedures used are described together with the two types of flight film used, Kodak SO-212 and SO-242. The sensitometry and processing of the flight film are discussed, and the results are presented in the form of the characteristic curves and related data. The use of copy films is also discussed.
    Keywords: ASTRONOMY
    Type: NASA-TM-78122
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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