Accession Number:

ADA162192

Title:

Vibro-Acoustic Forecasts for STS (Space Transportation System) Launches at V23, Vandenberg AFB: Results Summary and the Payload Preparation Room

Descriptive Note:

Environmental research papers

Corporate Author:

AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Personal Author(s):

Report Date:

1985-05-08

Pagination or Media Count:

86.0

Abstract:

The launch induced vibro-acoustic environments have been forecast for several Ground Support System structures at V23, the STS launch facility at Vandenberg, AFB. These forecasts are based on site particular vibration and pressure responses determined by an explosive sounding program conducted at V23. The responses are coupled with an STS acoustic pressure term established by measurement of STS launches at KSC. This report provides a summary of the results of this effort and provides the forecasts for the vibration environment in the PPR. Motion levels in the PPR are found to be substantially below all levels of concern. However, companion studies have shown that high accelerations can be anticipated in the OFS Room and the PCR. In addition, pounding could occur between PCR and PPR. Strong reverberations on acoustic records from V23 indicate that launch overpressures at V23 will be significantly altered from those at KSC for the shuttle at altitude and clear of the ground. Finally, the potential of pounding due to earthquake ground motions is discussed. Keyword Motion forecasts.

Subject Categories:

  • Mechanics
  • Ground Support Systems and Facilities for Space Vehicles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE