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ORION - Crew Module Side Hatch: Proof Pressure Test Anomaly Investigation
NTRS Full-Text: Click to View  [PDF Size: 446 KB]
Author and Affiliation:
Evernden, Brent A.(NASA Johnson Space Center, Houston, TX, United States)
Guzman, Oscar J.(NASA Johnson Space Center, Houston, TX, United States)
Abstract: The Orion Multi-Purpose Crew Vehicle program was performing a proof pressure test on an engineering development unit (EDU) of the Orion Crew Module Side Hatch (CMSH) assembly. The purpose of the proof test was to demonstrate structural capability, with margin, at 1.5 times the maximum design pressure, before integrating the CMSH to the Orion Crew Module structural test article for subsequent pressure testing. The pressure test was performed at lower pressures of 3 psig, 10 psig and 15.75 psig with no apparent abnormal behavior or leaking. During pressurization to proof pressure of 23.32 psig, a loud 'pop' was heard at ~21.3 psig. Upon review into the test cell, it was noted that the hatch had prematurely separated from the proof test fixture, thus immediately ending the test. The proof pressure test was expected be a simple verification but has since evolved into a significant joint failure investigation from both Lockheed Martin and NASA.
Publication Date: May 16, 2018
Document ID:
20170010438
(Acquired Nov 13, 2017)
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number: JSC-CN-40662
Document Type: Conference Paper
Meeting Information: Aerospace Mechanisms Symposium; 44th; 16-18 May 2018; Cleveland, OH; United States
Meeting Sponsor: Mechanisms Education Association; San Jose, CA, United States
Financial Sponsor: NASA Johnson Space Center; Houston, TX, United States
Organization Source: NASA Johnson Space Center; Houston, TX, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright; Work of the U.S. Government - Public use permitted
NASA Terms: CREW EXPLORATION VEHICLE; SPACECRAFT MODULES; SPACECREWS; HATCHES; PRODUCT DEVELOPMENT; PROVING; STRUCTURAL STABILITY; ABNORMALITIES; LEAKAGE; LESSONS LEARNED
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