REG NASA-LLIS-0633-1999 Lessons Learned Need for functional performance testing.pdf

1、Lessons Learned Entry: 0633Lesson Info:a71 Lesson Number: 0633a71 Lesson Date: 1999-07-20a71 Submitting Organization: ARCa71 Submitted by: Dave ZimmerSubject: Need for functional performance testing Description of Driving Event: In support of obtaining flight certification for space flight experimen

2、t, there is a requirement and it is standard practice to perform both safety and verification testing. A similar requirement to provide functional performance testing does not exist. Functional performance testing is left to the discretion of project management or to the payload element developer. A

3、mes Research Center has found that the performance of full functional performance testing helps to characterize hardware parameters, identify weak design and circumvent potential in-flight anomalies.Lesson(s) Learned: It is essential to perform functional verification testing of space flight hardwar

4、e prior to final hardware acceptance. This testing should include:1. Test to ensure operational reliability for the full mission duration.2. Tests to characterize that the system will have acceptable performance under worst-case conditions. This can be a combination of conditions such as: highest te

5、mperature environment; highest power output, cooling filters partially blocked, cooling fan failure; etc.3. Tests to verify end-to-end compatibility that would include: physical and electrical interfaces; data signal compatibility; operational access; and crew interaction.4. Tests to verify compatib

6、ility with the microgravity environment on-board the KC-135. With limited microgravity periods, these tests cannot fully verify functional performance in a sustained microgravity environment, however, they can be used to demonstrate validity of concept and crew interface compatibility.Provided by IH

7、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Recommendation(s): See lesson(s) learned.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Sciencea71 Aeronautics ResearchAdditional K

8、ey Phrase(s): a71 Flight Equipmenta71 Hardwarea71 Payloadsa71 Research & Developmenta71 Safety & Mission Assurancea71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 1999-08-02a71 Approval Name: Anthony Bricenoa71 Approval Organization: N244-30a71 Approval Phone Number: 415-604-1012Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-