Space Acceleration Measurement System (SAMS) Operations (Phase 1A)

SAMS Sensor Device SAMS Sensor Device SAMS Electronic Box

Objectives

The objectives of this experiment were: (1) to measure the microgravity acceleration environment on Mir in support of US and Russian Phase 1 investigations and (2) to characterize the microgravity environment and pass knowledge to Principal Investigators.

Shuttle-Mir Missions
STS-76, NASA-2 - NASA-7, STS-91

Approach
SAMS consisted of three triaxial remote sensor heads of different frequencies (only two sensor heads were functional during the Mir missions) that were designed to (1) measure accelerations near science experiments during their operations (2) measure accelerations in support of Mir Structural Dynamics Experiment (MiSDE). The sensor heads were moved into different locations on the Mir to characterize accelerations at different vectors. SAMS was activated to support a variety of mission events such as Shuttle docking and undocking, Progress docking and undocking, Soyuz docking and undocking and crew activities. Acceleration data from these events and others were recorded on optical disks. The data were processed into spectrogram plots.

Results
Five data disks returned on STS-74 contained microgravity acceleration data recorded between March 20, 1995 and November 16, 1995. The major activities recorded by the SAMS unit in this time frame were:

· Kristall module re-docking with Mir
· Crew exercise periods
· Day-long periods for nominal Mir daily activity
· Soyuz docking with Mir
· STS-74 docking with Mir
· Leak checks on Mir after docking

Publications
A Mission Summary Report (NASA Technical Memorandum 107312) has been prepared for this data set.

A paper was presented at 31st COSPAR (Committee on Space Research) Scientific Assembly, 14-21 July 1996, Birmingham, UK. The paper is entitled "Low-gravity environment of the Mir Space Station."

Principal Investigators
Richard Delombard
NASA/Lewis Research Center

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Page last updated: 07/16/1999

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