IR Group Activities At The Israel Aircraft Industries

S. Jacobson; S. Weisrose; M. Lindner; M. Lindner; Z. Lissak; Y. Yoav; J. Wallace; R. Davidson; Y. Komet

doi:10.1117/12.941811

10 November 1987 IR Group Activities At The Israel Aircraft Industries

S. Jacobson, S. Weisrose, M. Lindner, M. Lindner, Z. Lissak, Y. Yoav, J. Wallace, R. Davidson, Y. Komet

Proceedings Volume 0819, Infrared Technology XIII; (1987) https://doi.org/10.1117/12.941811
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

The experimental activities of the IR group at Israel Aircraft Industries (IAI) include the performance of IR signature measurements of aircraft in static ground as well as dynamic flight tests. Measuring capability exists in spectrometric and band modes. In support of measurements, signature modelling is performed. These include emissions from gaseous and solid-body sources, in the near, middle and far IR spectral wavebands. In support of related projects a test range has been developed which includes a jet engine simulator. This test facility has the capability to produce the IR radiation emitted by the hot metal surface and gaseous plume of a typical aircraft engine, at different power-level settings. These simulations are for low altitude aircraft, with flight speeds of up to 1 Mach. The IR radiation produced by the engine simulator is measured by a radiometric system, designed and constructed at IAI. The system includes five radiometers, operating simultaneously at 5 out of 13 different angles. A comprehensive base of computer codes at IAI is available and extends the understanding of the processes involved. These include the possibility of performing heat transfer calculations, jet engine wake temperature and chemical concentration distributions and atmospheric transmission considerations. In this presentation some of the results of radiometric measurements of the engine simulator will be compared to theoretical estimations of its IR signature.

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S. Jacobson, S. Weisrose, M. Lindner, M. Lindner, Z. Lissak, Y. Yoav, J. Wallace, R. Davidson, and Y. Komet "IR Group Activities At The Israel Aircraft Industries", Proc. SPIE 0819, Infrared Technology XIII, (10 November 1987); https://doi.org/10.1117/12.941811

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KEYWORDS

Infrared signatures

Radiometry

Infrared radiation

Gases

Computer simulations

Control systems

Sensors

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