Control of Cabin Pressure Venting and Emergency Relief for the International Space Station

Document Number: 981623

Date Published: July 1998

Author(s):
Larry Gage - AlliedSignal Aerospace

Abstract:
A cabin pressure vent and emergency relief valve subassembly (VRV) was developed for Boeing Defense and Space as part of the International Space Station. Functional enhancements were made for Mitsubishi Heavy Industries, Ltd., to meet the unique requirements of the Japanese Experiment Module.

The VRV provides nine distinct functions or features, including redundant closure elements, de-berthing capability, maximized resistance to ice collection during cabin depressurization, electronic flow modulation, and manual operation capabilities. It is designed as an orbital replacement unit with a 10-year, on-orbit lifetime.

This paper provides an overview of the multiple system requirements, the principles involved, and concept validation tests which drove the final design to meet the challenging requirements of a 10-year operational valve with exceptional leakage control.

File Size: 143K
Product Status: In Stock

See other papers presented at International Conference On Environmental Systems, July 1998, Danvers, MA, USA, Session: Space Station ECLSS I

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