Lessons Learned from the Long Duration Exposure Facility

Abstract

The Long Duration Exposure Facility (LDEF) was launched by the space shuttle in April, 1984, and recovered in January, 1990. There were 57 experiments containing over 10,000 specimens to test the effects of the space environment on materials, components, and systems. Originally planned for 1 yr, the exposure actually lasted almost 6 yr. While many LDEF investigations are continuing, results to date have provided valuable information on long-term performance in orbit. Results from the LDEF investigators and the special investigation groups are briefly summarized along with potential benefits from LDEF for future missions.