Accession Number:

ADA218048

Title:

Air Force Boom Event Analyzer Recorder (BEAR): System Description

Descriptive Note:

Final rept. Oct 1985-Aug 1989,

Corporate Author:

HARRY G ARMSTRONG AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH

Report Date:

1989-08-01

Pagination or Media Count:

180.0

Abstract:

Developed, tested, built and used in field studies were several Boom Event Analyzer REcorders BEARs. These BEARs operate unattended to capture the wave form of Impulsive Acoustic Events e.q. Sonic Booms and their time of occurrance while excluding all other acoustic events. These BEARs are designed to operate unattended for up to 10 days and can store over 50 normal less than 250 miliseconds in duration sonic booms. These BEAR systems have been used successfully to capture the sonic boom signature from all US supersonic aircraft. This report is a complete system description of the BEAR covering data collection, theory of operation, data storage and retrieval, operation and complete hardware and software description. The comparison test done in cooperation with NASA and field studies using these BEARs are detailed in companion reports. JHD

Subject Categories:

  • Recording and Playback Devices
  • Acoustics
  • Noise Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE