1、Lessons Learned Entry: 0322Lesson Info:a71 Lesson Number: 0322a71 Lesson Date: 1993-05-28a71 Submitting Organization: MSFCa71 Submitted by: White, WilliamSubject: Radiation, Effect on Windows and Optical Instruments Description of Driving Event: Experience on the Soviet Space Station showed that lon
2、g exposure to space radiation affects the transparency of glass and that this effect is reduced by using quartz glass coated with cerium oxide.Lesson(s) Learned: Exposure to radiation results in the impairment of transparency of the glass in ports and optical instruments.Recommendation(s): Use quart
3、z glass with low content of impurities, and coat with cerium oxide to reduce radiation effects on glass.Evidence of Recurrence Control Effectiveness: Soviet experience demonstrated the effectiveness of the recommended action.Documents Related to Lesson: N/AMission Directorate(s): N/AProvided by IHSN
4、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Additional Key Phrase(s): a71 Flight Equipmenta71 Hardwarea71 Parts Materials & Processesa71 SpacecraftAdditional Info: Approval Info: a71 Approval Date: 1994-05-28a71 Approval Name: White, Williama71 Approval Organization: EB22a71 Approval Phone Number: 205-544-4617Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
