A description is given of an aircraft crash location transmitter device. The device is mounted on the tail of an aircraft in a round sealed case held by a shear pin that releases under crash impact of 7 to 8 G's. The transmitter is powered by a batter which is kept charged by a trickel charge from the aircraft electrical system, preferably the wiring leading to the navigational light on the tail. The transmitter has a button actuated meter to test the transmitter battery condition while the apparatus is installed on an aircraft. At the time of the crash, the transmitter is released and ejected, the concave-formed metal spring blade antenna wound around the case unwinds and the transmitter starts emitting on emergency frequencies 121.5 MHz and 243 MHz. The transmitter, which is shock mounted within outer and inner cases, lands and continues transmitting for about 48 hours.
Aircraft-Mounted Crash-Activated Radio Device
1972
13 pages
Report
Keine Angabe
Englisch
Aircraft-mounted crash-activated transmitter device
NTRS | 1976
|Aircraft Mounted Crash Activated Transmitter Device
NTIS | 1974
|