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  • Other Sources  (7)
  • AIRCRAFT DESIGN, TESTING AND PERFORMANCE  (4)
  • INSTRUMENTATION AND PHOTOGRAPHY  (3)
  • 1990-1994  (7)
  • 1992  (7)
  • 1
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    640 x 480 MWIR and LWIR camera system developments (1992)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The performance of a 640 x 480 PtSi, 3,5 microns (MWIR), Stirling cooled camera system with a minimum resolvable temperature of 0.03 is considered. A preliminary specification of a full-TV resolution PtSi radiometer was developed using the measured performance characteristics of the Stirling cooled camera. The radiometer is capable of imaging rapid thermal transients from 25 to 250 C with better than 1 percent temperature resolution. This performance is achieved using the electronic exposure control capability of the MOS focal plane array (FPA). A liquid nitrogen cooled camera with an eight-position filter wheel has been developed using the 640 x 480 PtSi FPA. Low thermal mass packaging for the FPA was developed for Joule-Thomson applications.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: In: Infrared technology XVIII; Proceedings of the Meeting, San Diego, CA, July 19-22, 1992 (A93-32826 12-35); p. 386-400.
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Doppler-shifted fluorescence imaging of velocity fields in supersonic reacting flows (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The application of Doppler-shifted fluorescence imaging of velocity fields in supersonic reacting flows is analyzed. Focussing on fluorescence of the OH molecule in typical H2-air Scramjet flows, the effects of uncharacterized variations in temperature, pressure, and collisional partner composition across the measurement plane are examined. Detailed measurements of the (1,0) band OH lineshape variations in H2-air combustions are used, along with single-pulse and time-averaged measurements of an excimer-pumped dye laser, to predict the performance of a model velocimeter with typical Scramjet flow properties. The analysis demonstrates the need for modification and control of the laser bandshape in order to permit accurate velocity measurements in the presence of multivariant flow properties.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: AIAA PAPER 92-2964
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Phoenix: Preliminary design of a high speed civil transport (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The goal of the Phoenix Design Project was to develop a second generation high speed civil transport (HSCT) that will meet the needs of the traveler and airline industry beginning in the 21st century. The primary emphasis of the HSCT is to take advantage of the growing needs of the Pacific Basin and the passengers who are involved in that growth. A passenger load of 150 persons, a mission range of 5150 nautical miles, and a cruise speed of Mach 2.5 constitutes the primary design points of this HSCT. The design concept is made possible with the use of a well designed double delta wing and four mixed flow engines. Passenger comfort, compatibility with existing airport infrastructure, and cost competitive with current subsonic aircraft make the Phoenix a viable aircraft for the future.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-192024 , NAS 1.26:192024
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Advanced sensors technology survey (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This project assesses the state-of-the-art in advanced or 'smart' sensors technology for NASA Life Sciences research applications with an emphasis on those sensors with potential applications on the space station freedom (SSF). The objectives are: (1) to conduct literature reviews on relevant advanced sensor technology; (2) to interview various scientists and engineers in industry, academia, and government who are knowledgeable on this topic; (3) to provide viewpoints and opinions regarding the potential applications of this technology on the SSF; and (4) to provide summary charts of relevant technologies and centers where these technologies are being developed.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-185691 , NAS 1.26:185691
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Comparison of 30x11.5 - 14.5 bias-ply and radial-belted tire characteristics (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An investigation at NASA Langley Research Center was conducted to determine the static and dynamic mechanical characteristics of 30x11.5-14.5, Type VIII, bias-ply and radial-belted aircraft tires. The tire characteristics were determined by application of vertical and fore-and-aft loads. The results of the study are presented to show static load deflection curves, hysteresis losses, and stiffness and damping characteristics of each tire type tested. The advantages and disadvantages of each type of tire are also given.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: SAE PAPER 922012 , SAE, Aerotech ''92 Conference; Oct 05, 1992 - Oct 08, 1992; Anaheim, CA; United States|; 12 p.
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Advanced composites structural concepts and materials technologies for primary aircraft structures: Design/manufacturing concept assessment (1992)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Composite Wing and Fuselage Structural Design/Manufacturing Concepts have been developed and evaluated. Trade studies were performed to determine how well the concepts satisfy the program goals of 25 percent cost savings, 40 percent weight savings with aircraft resizing, and 50 percent part count reduction as compared to the aluminum Lockheed L-1011 baseline. The concepts developed using emerging technologies such as large scale resin transfer molding (RTM), automatic tow placed (ATP), braiding, out-of-autoclave and automated manufacturing processes for both thermoset and thermoplastic materials were evaluated for possible application in the design concepts. Trade studies were used to determine which concepts carry into the detailed design development subtask.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-4447 , NAS 1.26:4447 , REPT-73-C1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Braking, steering, and wear performance of radial-belted and bias-ply aircraft tires (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Preliminary steering, braking, and tread wear performance results from testing of radial-belted and bias-ply aircraft tires at NASA Langley are described. An overview of the joint NASA/FAA/industry START program is presented. Attention is given to the Langley Test Facility, equipment and future activities.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: SAE PAPER 921036 , SAE, Aerospace Atlantic Conference; Apr 07, 1992 - Apr 10, 1992; Dayton, OH; United States|; 7 p.
    Format: text
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    NASA TECHNICAL REPORTS
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