Abstract
This lecture provides an introduction to the NASA Long Duration Exposure Facility (LDEF). The basic intention for LDEF was to develop a retrievable platform which would provide lower-cost and more frequent access to space for the scientific and engineering community. A broad range of scientific and engineering experiments were integrated into LDEF for the first one-year mission which was deployed from Challenger (STS-41D) in April 1984. Schedule slippage and the Challenger disaster led to the unplanned extended exposure which culminated in the retrieval by Columbia (STS-32) in January 1990. This lecture provides a broad overview of the experiments flown aboard LDEF-1 and preliminary significant results from a spacecraft systems perspective.
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