Accession Number : AD0856673

Title :   Reverse Pressure Effect on Suit Demand Regulator.

Descriptive Note : Final rept.

Corporate Author : MCDONNELL CO ST LOUIS MO

Report Date : 28 MAR 1968

Pagination or Media Count : 14

Abstract : A Gemini B Suit Oxygen Demand and Relief Regulator Valve, P/N 52-83700-1171, was exposed to a simulated cabin pressure of 0.1 psia for 33 days. The gas supply to the regulator was closed during the 33 day exposure, permitting the simulated suit circuit pressure to decay to 0.1 psia. Following the 33 day exposure the regulator outlet demand diaphragm was subjected to a reverse pressurization of 3.5 psi simulating the reactivation of the Gemini B Environmental Control System. These tests were performed to demonstrate that the qualified NASA Gemini regulator valve would operate satisfactory when exposed to the Gemini B conditions of orbital storage and reverse pressure. Functional tests performed on the regulator before and after the 33 day exposure indicated that the regulator performance was satisfactory except that the maximum suit pressure control point after the exposure was out of specification. (Author)

Descriptors :   *PRESSURE REGULATORS), (*MANNED SPACECRAFT, PRESSURE SUITS), (*SPACE STATIONS, PRESSURE SUITS), (*PRESSURE SUITS, SPACE CAPSULES, PNEUMATIC VALVES, OXYGEN, ENVIRONMENTAL TESTS, RELIABILITY.

Subject Categories : Hydraulic and Pneumatic Equipment
      Manned Spacecraft
      Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE