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IEEE Aerospace and Electronic Systems Magazine

Issue 9 • Sept. 1990

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Displaying Results 1 - 7 of 7
  • DESC efforts for parts quality improvement

    Publication Year: 1990, Page(s):7 - 10
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (346 KB)

    Some of the impact that the test program at the Defense Electronics Supply Center (DESC) is having on improving the quality of products being supplied to its customers is illustrated. DESC test program non-mil lot rejection rates were nearing 50% for discrete semiconductors tested in receiving inspection. The associated part reject rate was nearly 15%. The part reject rate for all federal supply c... View full abstract»

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  • A modular 550 watt, 25 watts per cubic inch power supply for next generation aircraft

    Publication Year: 1990, Page(s):11 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (414 KB)

    The development of the HVS-550 high-performance power supply is described. The HVS-550 was designed and built utilizing state-of-the-art surface mount construction, low-profile magnetics, and aggressive thermal management techniques. This combination allowed the module height to be only 0.58 in. The unique requirements of the military system that bounded the power-supply parameters are discussed. ... View full abstract»

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  • AFIT neural network research

    Publication Year: 1990, Page(s):17 - 19
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (219 KB)

    A brief summary of research done at the Air Force Institute of Technology (AFIT) in the area of neural networks is provided. It has been shown that backpropagation, used for feedforward artificial neural networks, is just a degenerate version of an extended Kalman filter, and that networks can do about as well as the optimum statistical classification technique. A method of finding the importance ... View full abstract»

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  • Advanced Launch System (ALS) actuation and power systems impact operability and cost

    Publication Year: 1990, Page(s):20 - 23
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (307 KB)

    A brief status review of the Advanced Launch System (ALS) is given. The use of electrical actuation integrated with a single-vehicle electrical power system and controls for all actuation and avionic requirements is highlighted. This technology will help attain the ALS primary goals of reduced costs ($300/lb Earth to LEO (low Earth orbit)) and improved operability by significantly reducing the lau... View full abstract»

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  • Attitude determination with GPS: experimental results

    Publication Year: 1990, Page(s):24 - 29
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (301 KB)

    An approach to global positioning system (GPS) attitude determination and the results of an experimental evaluation are presented. The most outstanding features of the method are the fundamental observable used for attitude calculation, the triple difference, and the introduction of a new parameter, the differential dilution of precision (DDOP), which relates the GPS satellite geometry to the GPS ... View full abstract»

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  • Where does human factors fit in R&D organizations?

    Publication Year: 1990, Page(s):31 - 33
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (234 KB)

    It is argued that human factors professionals in large R&D organizations should have a centralized human factors group (or department) with a manager sensitive to human factors organizational issues. This arrangement permits these professionals to maximize their contributions to the design, development, and testing of a product or service. Managers of human factors groups and departments can help ... View full abstract»

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  • 8"×8" full color cockpit display

    Publication Year: 1990, Page(s):3 - 6
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The operation of active matrix liquid crystal displays (AMLCDs), the preferred flat-panel displays for avionic and aerospace applications, is explained. An 8-in.×8-in. full-color AMLCD designed for a military aircraft is described, as well as the principles of the p-i-n diode switch on which its design is based. The performance characteristics of the display are examined View full abstract»

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Aims & Scope

IEEE Aerospace and Electronic Systems Magazine is a monthly magazine that publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments as well as news and information of interest to IEEE Aerospace and Electronic Systems Society members.

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Editor-in-Chief
Maria Sabrina Greco
Dept. of Information Engineering
University of Pisa
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