Accession Number : AD0771619

Title :   A Thermal Control System for the KS-87B Camera.

Descriptive Note : Technical rept.,

Corporate Author : AIR FORCE AVIONICS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Davis,Hugh W.

Report Date : AUG 1973

Pagination or Media Count : 78

Abstract : Thermal gradients within the lens cone of the KS-87B aerial camera cause focal length changes which degrade photographic quality. A thermal control system has been developed in an attempt to maintain isothermal conditions at 105F within the lens cone. It consists of a thermal blanket, a heater film sandwiched between two layers of insulation, and thermostatic controls. Testing was accomplished in natural indoor and outdoor environments, using thermistors to measure temperatures at 14 locations within the system. Tests revealed that temperature differences between different parts of the lens did not exceed 4F in an environment of 33F ambient temperature. This thermal control system is simple, reliable, and relatively inexpensive. (Modified author abstract)

Descriptors :   *Photographic reconnaissance, *Temperature control, *Reconnaissance cameras

Subject Categories : Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE