1、Lessons Learned Entry: 1916Lesson Info:a71 Lesson Number: 1916a71 Lesson Date: 2008-9-19a71 Submitting Organization: MSFCa71 Submitted by: Linda Jetera71 POC Name: Reggie Spiveya71 POC Email: reggie.a.spiveynasa.gova71 POC Phone: 256-544-0321Subject: Pore Formation Mobility Experiment Single Event U
2、psets Abstract: Two single event upsets occurred during on-orbit processing of samples which can be attributed to radiation hits on the Pore Formation Mobility Investigation (PFMI) Smart Motors in the thermal chamber.Description of Driving Event: During the operation of the PFMI investigation, the m
3、otors became erratic. Troubleshooting revealed that the motor constants had been altered due to radiation exposure.Lesson(s) Learned: Future International Space Station investigations using these types of Smart Motors should provide radiation shielding.Recommendation(s): Radiation shielding should b
4、e implemented when using Commercial-Off-The-Shelf (COTS) smart motors in a radiation environment such as the International Space Station (ISS).Evidence of Recurrence Control Effectiveness: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/ADocuments
5、Related to Lesson: N/AMission Directorate(s): a71 Space OperationsAdditional Key Phrase(s): a71 Engineering Design (Phase C/D).Additional Info: a71 Project: Pore Formation Mobility InvestigationApproval Info: a71 Approval Date: 2009-04-20a71 Approval Name: mbella71 Approval Organization: HQProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
