Accession Number : AD0773324

Title :   Development and Testing of a Cadmium Telluride High Temperature (750 F) Infrared Fire Detector.

Descriptive Note : Final rept. 28 Feb 72-19 Sep 73,

Corporate Author : TYCO LABS INC WALTHAM MASS

Personal Author(s) : Entine,G. ; Farrell,R. ; Wilson,F.

Report Date : NOV 1973

Pagination or Media Count : 73

Abstract : CdTe photodetectors capable of operating continuously at 750F were packaged for flight testing as an aircraft engine fire detector. The sensors at temperature could detect a photosignal of 50 microwatts per square centimeter with a signal-to-noise ratio of over 20:1 and an output impedance of 1000 ohms. The units consist of two CdTe sensors separately sealed in hermetic TO-8 headers which are mounted inside a larger hermetically sealed housing made of inconel. The detectors meet MIL-Spec 810B including temperature cycling up to 750F, well above the capability of all the available semiconductor infrared detectors. (Author)

Descriptors :   *Aircraft fires, *Fire detectors, *Infrared detectors, Photodetectors, Cadmium tellurides, Signal to noise ratio, Spectra, Response

Subject Categories : Aircraft
      Electrical and Electronic Equipment
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE