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Aircraft-mounted crash-activated transmitter deviceAn aircraft crash location transmitter tuned to transmit on standard emergency frequencies is reported that is shock mounted in a sealed circular case atop the tail of an aircraft by means of a shear pin designed to fail under a G loading associated with a crash situation. The antenna for the transmitter is a metallic spring blade coiled like a spiral spring around the outside of the circular case. A battery within the case for powering the transmitter is kept trickle charged from the electrical system of the aircraft through a break away connector on the case. When a crash occurs, the resultant ejection of the case from the tail due to a failure of the shear pin releases the free end of the antenna which automatically uncoils. The accompanying separation of the connector effects closing of the transmitter key and results in commencement of transmission.
Document ID
19760025052
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Manoli, R. (Rockwell Intern. Corp. Downey, Calif., United States)
Ulrich, B. R. (Rockwell Intern. Corp. Downey Calif., United States)
Date Acquired
August 8, 2013
Publication Date
August 31, 1976
Subject Category
Air Transportation And Safety
Accession Number
76N32140
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MFS-16609-3|US-PATENT-3,978,410
Patent Application
US-PATENT-APPL-SN-307714|US-PATENT-APPL-SN-82279|US-PATENT-APPL-SN-511894

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