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Aerospace and Electronic Systems Magazine, IEEE

Issue 1 • Date Jan 2004

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  • IEEE Aerospace & Electronic Systems Magazine

    Publication Year: 2004 , Page(s): 49
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  • Fuel-cell powered airplane propulsion

    Publication Year: 2004 , Page(s): 12 - 13
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    The advantages of fuel-cell auxiliary power in airplanes have been obvious. Fuel cells can generate for an airplane its auxiliary electric power more efficiently than can propulsion-engine powered generators, thus reducing the quantity of fuel that must be carried on a trip. Boeing has now organized a team for developing a small airplane that flies at low altitude to demonstrate the advantages of using fuel-cell power for airplane propulsion. Because fuel cells convert fuel directly into electricity and heat, without the combustion in a hydrocarbon-fuel consuming engine, they are emission-free and thus cleaner for the environment. And because they also produce water, this water could be used on-board a commercial airplane, reducing the amount that the plane needs to carry on a long-distance flight. View full abstract»

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  • Synopsis of minutes

    Publication Year: 2004 , Page(s): 41
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  • Web-based environment to support aerodynamic testing

    Publication Year: 2004 , Page(s): 3 - 11
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    Over the past several years, a Web-based environment to support aerodynamic testing has been under development at the Aerodynamics Laboratory of the Institute for Aerospace Research, National Research Council of Canada. As a mechanism for interacting with users, the WWW offers one significant advantage over other, more traditional techniques: it is "easy". More specifically, it is easy to use, easy to distribute, easy to expand, easy to develop, and easy to maintain. The web-based testing environment at the Aerodynamics Laboratory currently consists of five primary applications, nine secondary applications, and a large number of Web pages containing documentation, system status, and links to outside information. These resources may be accessed via "home pages" created for clients and staff. The five primary applications are a data file viewer, a plotting system, a configuration file editor, a dynamic data display system, and an event recording and display system. The secondary applications include a units conversion calculator, an electronic test specification form for use by the engineering staff, and several software support tools for use by the IT personnel. View full abstract»

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  • IEEE/USA

    Publication Year: 2004 , Page(s): 37
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  • Lithium-ion batteries for aerospace

    Publication Year: 2004 , Page(s): 18 - 25
    Cited by:  Papers (2)
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    Under the Mars Surveyor Program (MSP01), lithium-ion batteries were developed by Lithion Inc. (Yardney Technical Products Inc.), each being 28 V, 25 Ah, 8-cells, 9 kg and fully qualified prior to mission cancellation. In addition to the requirement of being able to supply at least 90 cycles on the surface of Mars, the battery was demonstrated to be capable of operation (both charge and discharge) over a large temperature range (-20° to +40°C), with tolerance to non-operational excursions to -30° and +50°C. After mission cancellation, the batteries delivered to JPL were subjected to generic performance tests to demonstrate the applicability of the technology to meet future NASA aerospace applications. One of the two batteries currently being tested at JPL is undergoing testing according to anticipated performance requirements of future Mars Lander applications. The primary goal of this activity is to determine the performance capability to power surface operation on Mars for a prolonged period (> 3 years) after being subjected to a long cruise period. The second 25 AHr battery is being tested to determine the viability of using lithium-ion technology for future planetary orbiter applications. The test implemented consists of cycling the battery continuously under LEO conditions (30% DOD), while periodically checking the battery impedance and full capacity (100% DOD). Prior to initiating these tests, a number of characterization tests were performed to determine general performance attributes and battery health. In addition to presenting battery data, results obtained with individual cells will also be presented to further describe the capabilities of the technology to meet future applications. View full abstract»

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  • Pulse width considerations for a short range millimeter wave radar

    Publication Year: 2004 , Page(s): 14 - 17
    Cited by:  Papers (1)
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    Simple means for optimizing the pulse width of a basic tracking short-range millimeter wave radar are shown. Ground-based or maritime use is assumed. The cases discussed include volume clutter due to rain or other particles within the antenna's main beam and surface clutter due to grass, soil, or snow. Depending on the available RF hardware and desired lowest detectable target RCS, pulses as short as 20 ns look feasible. Modern signal processing methods enable the detection of targets close to the noise limit. It seems, therefore, appropriate to discuss the relevance of using 3 dB beamwidths for clutter cell calculations. Experiments suggest that more accurate predictions are obtained by using 1 dB widths instead. The lack of comprehensive data for very small grazing angles and the less surveyed small-scale topography of radar environments set some constraints for straightforward implementations. Preliminary results indicate averaged surface clutter RCS levels less than -12 dBsm at V-band for small grazing angles. View full abstract»

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  • IEEE Aerospce & Electronic Systems society organization

    Publication Year: 2004 , Page(s): 46
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  • Upgrading armored vehicle sensor systems

    Publication Year: 2004 , Page(s): 26 - 32
    Cited by:  Papers (1)
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    Successful sensor modifications or upgrades of existing armored military vehicles call for extensive information of the desired operational environment, host vehicle and weapon system characteristics, and sensor performance limitations. Radar systems operating in the higher microwave or millimeter wave bands seem to be an attractive choice in terms of tracking capabilities and operation in poor visibility. Efficient mechatronic arrangements are needed for the stabilization of the pedestal at least down to 0.1° level if full specifications must be met also during platform motion or weapon launches. No ultimate parameters have been observed, until now, that would totally preclude the usage of such a short-range radar also at zero antenna elevation in typical sub-arctic scenery. The fluent throughput of the entire fleet upgrading task and future maintainability must be evaluated parallel to the acute technological challenges and user requirements. View full abstract»

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  • Ivan A. Getting: Pioneer in the Fields of Radar and GPS

    Publication Year: 2004 , Page(s): 34 - 35
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  • IEEE Aerospace and Electronic Systems

    Publication Year: 2004 , Page(s): 0_1
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  • This month's cover ...

    Publication Year: 2004 , Page(s): 0_2
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  • Table of contents

    Publication Year: 2004 , Page(s): 1
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  • In this issue - technically

    Publication Year: 2004 , Page(s): 2
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  • From the president

    Publication Year: 2004 , Page(s): 33
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  • From the editor-in-chief

    Publication Year: 2004 , Page(s): 33
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  • IEEE Conference on Intelligent Transporation Systems

    Publication Year: 2004 , Page(s): 36
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  • Call for participation

    Publication Year: 2004 , Page(s): 38 - 39
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  • Society miscellany

    Publication Year: 2004 , Page(s): 40
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  • 2004 IEEE Radar Conference

    Publication Year: 2004 , Page(s): 42
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  • Microwave & radar week

    Publication Year: 2004 , Page(s): 43
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  • PLANS 2004

    Publication Year: 2004 , Page(s): 44
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  • Distinguised lecturers program

    Publication Year: 2004 , Page(s): 45
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  • Student membership application [advertisement]

    Publication Year: 2004 , Page(s): 47 - 48
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  • AESS meetings & conferences

    Publication Year: 2004 , Page(s): 50
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Aims & Scope

The IEEE Aerospace and Electronic Systems Magazine publishes articles and tutorials concerned with the various aspects of systems for space, air, ocean, or ground environments.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Teresa Pace, PhD EE
Chief Engineer SenTech
SenTech, LLC - A DSCI Company
12601 Research Parkway
Orlando, FL 32826
(407) 207-1900 ext: 2102
(407) 450-0929 (BB)
tpace@sentech.dsci.com