Accession Number : AD0876374

Title :   Effects of a Bipropellant Attitude Control Rocket Plume on Optical Windows and a Thermal Control Paint.

Descriptive Note : Summary rept. Sep 69-Jun 70,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Winn, Robert A.

Report Date : AUG 1970

Pagination or Media Count : 79

Abstract : This technical report presents the results of work performed in support of the Air Force Rocket Propulsion laboratory's Bipropellant Attitude Control Rocket (ACR) Plume Contamination Investigation which was requested by the SAMSO Titan Transtage Office. Spectral transmittance measurements were made on optical glass samples before and after exposure to the exhaust plume of a bipropellant attitude control rocket. Spectral reflectance measurements were made on thermal control paint samples before and after exposure to the same environment. Curves are presented for the spectral transmittance measurements and the spectral reflectance measurements, over the spectral range of 0.25 to 2.5 microns, of the respective samples before and after exposure to the ACR plume. Photographs of the front surfaces of all the optical samples submitted for 'post-exposure' measurement are included to show some of the visual effects of exposure. Determinations of the solar absorptance/total normal emittance for the thermal control paint samples were made in the Nonmetallic Materials Division and the resultant data are included. (Author)

Descriptors :   (*COMBUSTION PRODUCTS, DAMAGE ASSESSMENT), (*ATTITUDE CONTROL SYSTEMS, COMBUSTION), (*MANNED SPACECRAFT, THERMAL INSULATION), OPTICAL GLASS, PAINTS, THERMAL PROPERTIES, EMISSIVITY, OPTICAL PROPERTIES, DEGRADATION, THIRD STAGE ENGINES.

Subject Categories : Combustion and Ignition
      Solid Rocket Propellants
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE