Spectrally selective transparency for background thermal matchin

Details Spectrally selective transparency for background thermal matchin Spectrally selective transparency for background thermal matchin

1990-11-01

1992-06-02

Bentley, Stephen C.

Ordnance

Shields

428919, 89 3604, F41H 300

Patent

active

051177374

ABSTRACT:
An enclosure covers equipment to be camouflaged from thermal or multi-spectral (thermal, radar visual) detection in spaced relation with the equipment. The enclosure is preferably semi-transparent plastic material sufficiently spaced from the equipment to permit natural convection, or forced airflow over the equipment. In one embodiment, the plastic material has a number of sides with a plurality of openings formed therein for entraining air and a top joining the sides. A chimney is formed in the top and an adjustable discharge damper is provided in the chimney for controlling the flow of air over the equipment. The airflow may be natural or controlled actively or semi-actively.

REFERENCES:
patent: 2046601 (1936-07-01), Atkinson
patent: 4316405 (1982-02-01), Esposito
Duncan et al., "Selection of Greenhouse Covering Materials", Transactions of the ASAE, Jul. 1975, vol. 18, pp. 703-706.

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