REG NASA-LLIS-1105--1999 Lessons Learned International Space Station Program Hardware Multi-Element Integration Testing (MEIT).pdf

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1、Lessons Learned Entry: 1105Lesson Info:a71 Lesson Number: 1105a71 Lesson Date: 1999-02-01a71 Submitting Organization: HQa71 Submitted by: David M. LengyelSubject: International Space Station Program/Hardware/Multi-Element Integration Testing (MEIT) Description of Driving Event: Use of High-Fidelity

2、Simulations of On-Orbit Components in MEITLesson(s) Learned: MEIT is the highest level of integrated testing available before committing ISS elements to launch. In order to produce valid results, this testing requires a high level of fidelity in emulators/simulators used in place of missing componen

3、ts.Recommendation(s): The ISS Program should ensure that high-fidelity simulations of on-orbit components are used in the MEIT and that the configurations of those simulators are validated to be in agreement with what has actually been orbited.Evidence of Recurrence Control Effectiveness: NASA concu

4、rs with the recommendation. The node emulator for MEIT I was built as certified GSE as was the Lab Emulator for MEIT II and III. Emulator design requirements include the emulated flight articles ICDs to the elements under test in MEIT. Activation/Validation and integrated testing confirms emulators

5、meet the emulated flight articles interface requirements and compares emulator performance with the flight articles performance in similar testing. The primary objective of these tests is to certify the emulators act like the flight article for the interfaces under test. The emulators are under conf

6、iguration management (CM) control and any updates to the flight elements will be checked for potential impacts to the emulators.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Documents Related to Lesson: N/AMission Directorate(s): a71 Space Operatio

7、nsa71 Exploration SystemsAdditional Key Phrase(s): a71 Aerospace Safety Advisory Panela71 Computersa71 Risk Management/Assessmenta71 Softwarea71 Test & Verificationa71 Test Articlea71 Test FacilityAdditional Info: Approval Info: a71 Approval Date: 2002-02-12a71 Approval Name: Bill Loewya71 Approval Organization: HQa71 Approval Phone Number: 202-358-0528Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-