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IEEE Aerospace and Electronic Systems Magazine

Issue 4 • Date April 1995

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Displaying Results 1 - 7 of 7
  • Thin-film Li-LiMn2O4 batteries

    Publication Year: 1995, Page(s):30 - 32
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (246 KB)

    Thin-film rechargeable Li-LiMn2O4 batteries have been fabricated and characterized. Following deposition by electron beam evaporation of LiMn2O4, the amorphous as-deposited cathode films 1 cm2 in area by 0.3to 4-μm thick were annealed at 700/spl deg/C to 800/spl deg/C in oxygen in order to form the crystalline spinet phase. The specifi... View full abstract»

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  • High resolution miniature AMLCDs for projection and head-mounted systems

    Publication Year: 1995, Page(s):33 - 35
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The development of advanced active matrix liquid crystal displays is described. The displays are formed from single crystal silicon, and have integrated on-board scanner circuitry for row and column addressing. The display diagonal is 5 cm, and pixel pitch as low as 12 μm is under development. Operational 640 by 480 displays are described, and initial results with 1.250 by 1.024 displays a... View full abstract»

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  • Solving radar detection problems using simulation

    Publication Year: 1995, Page(s):36 - 40
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Simulation is a well-known but often misunderstood method for predicting the detection range of radars. Recent advances in computer software and hardware have made simulation easier to apply and use. Users are putting increased reliance on computer simulation in lieu of more expensive test and evaluation. In this paper, a simulation example is given of a complex radar detection problem which is no... View full abstract»

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  • Need and effect of reconditioning of nickel/hydrogen batteries

    Publication Year: 1995, Page(s):26 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    There has been a debate about the need for reconditioning nickel/hydrogen batteries in geosynchronous satellites. A study was done as part of life cycling, to determine the necessity of reconditioning and its effect on the cell performance. A 36 Ah nickel/hydrogen cell was put on a GEO simulated cycling at 15°C without reconditioning up to four eclipse seasons. The effect of reconditioning on ... View full abstract»

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  • Hubble Space Telescope solar array change-out, mission anomalies and returned flight hardware

    Publication Year: 1995, Page(s):3 - 13
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1392 KB)

    During the successful First Servicing Mission on the Hubble Space Telescope the two solar arrays were replaced with new and improved solar arrays. An electrical short and four solar array mechanical system anomalies occurred: (1) the upper outer bistem on the +V2 wing had developed kinks and then failed to retract; (2) additional friction between the solar array latch fitting and the aft latch ber... View full abstract»

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  • Global avionics in the future

    Publication Year: 1995, Page(s):14 - 19
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The following topics are discussed: new batteries for old airplanes; new charge controls for lengthening battery life; fast methods for batteries charging; AC conductance measurement based battery testing; pulse power; bipolar lead-acid batteries vs supercapacitors; Ni electrode cells for spacecraft; worn-out battery disposal; recycling technology; vehicle batteries cost; high energy content batte... View full abstract»

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  • Charging the new batteries-IC controllers track new technologies

    Publication Year: 1995, Page(s):20 - 25
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    Demands for portability have fueled significant developments in new battery technology. These developments have resulted in many more options in selecting the battery type for use in a particular project, but since most applications today are opting for rechargeable battery systems, the availability of battery charging solutions can become an equally important criteria in the selection process. Co... 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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Meet Our Editors

Editor-in-Chief
Maria Sabrina Greco
Dept. of Information Engineering
University of Pisa
Via G.Caruso 16
56122 Pisa, Italy
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m.greco@ieee.org