Clean assembly and integration techniques for the Hubble Space Telescope High Fidelity Mechanical Simulator

Details Clean assembly and integration techniques for the Hubble Space Telescope High Fidelity Mechanical Simulator Clean assembly and integration techniques for the Hubble Space Telescope High Fidelity Mechanical Simulator

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spst.nasa...99h&link_type=abstract

In its Eighteenth Space Simulation Conference: Space Mission Success Through Testing p 99-111 (SEE N95-14062 03-18)

Astronomy and Astrophysics

Astronomy

Clean Rooms, Cleanliness, Contamination, Fabrication, Hubble Space Telescope, Proving, Shrouds, Simulators, Astronaut Training, Controlled Atmospheres, Optical Equipment, Sampling, Thermal Protection

Scientific paper

A mechanical simulator of the Hubble Space Telescope (HST) Aft Shroud was built to perform verification testing of the Servicing Mission Scientific Instruments (SI's) and to provide a facility for astronaut training. All assembly, integration, and test activities occurred under the guidance of a contamination control plan, and all work was reviewed by a contamination engineer prior to implementation. An integrated approach was followed in which materials selection, manufacturing, assembly, subsystem integration, and end product use were considered and controlled to ensure that the use of the High Fidelity Mechanical Simulator (HFMS) as a verification tool would not contaminate mission critical hardware. Surfaces were cleaned throughout manufacturing, assembly, and integration, and reverification was performed following major activities. Direct surface sampling was the preferred method of verification, but access and material constraints led to the use of indirect methods as well. Although surface geometries and coatings often made contamination verification difficult, final contamination sampling and monitoring demonstrated the ability to maintain a class M5.5 environment with surface levels less than 400B inside the HFMS.

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