MIR Environmental Effects Payload
(MEEP) Archive System

NASA Langley Research Center
Hampton, Virginia
PPMD - Polished Plate Meteroid Detector
  1. 30-Day, Post-Retrieval Report
  2. Craters in the Aluminum Alloy Plate (abstract) - Don Humes



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The objective of the Polished Plate Micrometeoroid and Debris (PPMD) experiment is to assess and characterize the natural micrometeoroid and the man-made debris (M&D) environments in the Mir high-inclination orbit. The PPMD experiment will determine the M&D impact fluxes, the mass range of M&D particles encountered, sources of the debris encountered, and characterize the resulting impact damage. The PPMD experiment consists of plates made of gold, aluminum, and zinc. The plates are attached to the Experiment Container mounting plate where they will be exposed to the environment around Mir. An atomic-oxygen pinhole camera is utilized to assist in determining the viewing direction. The PPMD experiment is developed by Langley Research Center.

PPMD Photos
(Select the appropriate thumbnail for a larger image)
Deployed 1 Deployed 2 Post Retrieval
ppmd.gif ppmd2.gif ppmd3.gif

Related Links
Deployment
STS-76
Retrieval
STS-86
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Space Flight

Technical content for the MIR Environmental Effects Payload (MEEP) Web site was provided by Greg Stover. Please address comments regarding the technical content to g.stover@larc.nasa.gov.


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MEEP / Mir Photographs
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