Accession Number : AD0856894

Title :   Vibration Test of a 52-85713-339 Tape Recorder. Volume II.

Descriptive Note : Final rept.

Corporate Author : MCDONNELL CO ST LOUIS MO

Report Date : 20 AUG 1968

Pagination or Media Count : 102

Abstract : The tape recorder operated mechanically throughout all tests of Revision A of the test request. The peak-to-peak jitter was 20% or higher during all tests. The Department 289 ground station was able to obtain good sync. only for the X-axis shock mounted test. Several signal improvement techniques were attempted both at the Department 289 ground station and at the GSO ground station. There was minor improvement at the Department 289 station and partial improvement at the GSO station. The GSO station improvement was large enough to have permitted manual data reduction had this been a mission tape. Paragraphs 1 thru 4 summarize the results of the test which was run per Revision A of the test request. Retest per Revision B of the test request was completed without mechanical failure. Jitter measured on data recorded during vibration periods was improved by a minimum of 25% over jitter measured in similar periods of the test run per Revision A of the test request. Data reduction however, was only slightly improved over that of Revision A data. The retest is summarized. (Author)

Descriptors :   (*MANNED SPACECRAFT, MAGNETIC RECORDING SYSTEMS), (*SPACE STATIONS, MAGNETIC RECORDING SYSTEMS), (*MAGNETIC RECORDING SYSTEMS, RELIABILITY(ELECTRONICS)), SPACE CAPSULES, ENVIRONMENTAL TESTS, VIBRATION, ACCEPTABILITY.

Subject Categories : Recording and Playback Devices
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE