1、Lessons Learned Entry: 0743Lesson Info:a71 Lesson Number: 0743a71 Lesson Date: 2000-02-29a71 Submitting Organization: JSCa71 Submitted by: Larry GreggSubject: Rigor in Integrated Design, Development, Documentation, and Configuration Control Description of Driving Event: On December 8, 1995, a full-s
2、cale model of the NASA JSC Experimental Crew Return Vehicle (XCRV) experienced a failure of its parafoil deployment system during a test drop at the U.S. Armys Yuma Proving Ground (YPG) near Yuma, Arizona. The wingless 24-foot model impacted the ground without the parafoil deployed due to damage sus
3、tained when two lines entangled during deployment from a Colorado Air National Guard C-130 Aircraft at 15,000 feet mean sea level. The design of the test-unique model, platform restraint and separation system was neither reviewed by all parties affected by its integration nor well documented. As a r
4、esult, opportunities to identify design problems were missed, and there was little opportunity to ensure conformance with the intended design in the vehicle configuration process.Lesson(s) Learned: The rigor with which a design is developed and documented and the configuration is controlled, includi
5、ng the portion of the design that is test-unique, must be commensurate with the financial and programmatic value of the test article and test objectives.Recommendation(s): All critical parties to the configuration of a model and exectution of a test must be present and/or review the total integrated
6、 design during the design and integration process.Evidence of Recurrence Control Effectiveness: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Documents Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Sciencea71 Space Ope
7、rationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Aircrafta71 Configuration Managementa71 Flight Operationsa71 Flight Equipmenta71 Hardwarea71 Policy & Planninga71 Research & Developmenta71 Risk Management/Assessmenta71 Test Articlea71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 2000-04-11a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
