EMERGENCY-WARNING SYSTEM Russian patent published in 2009 - IPC B64D25/20 G08B25/10 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to aircraft engineering, in particular, to aircraft and their crew search and rescue systems. The proposed system comprises a radio beacon with parachute arranged in aircraft recess. In incorporates also the mechanism intended for taking the said radio beacon from the said recess and unit to determine the availability of extreme conditions, which controls aforesaid mechanism. Radio beacon is connected with aircraft structure by a towing cable and furnished with water availability pickup, inflatable boat and uncoupling device. The proposed system comprises also the onboard radio beacon hardware and that of detecting crashed crew. The former includes receiving aerial, GPS-signal receiver, micro-controller, power supply controller, supply storage battery, generator of pseudo-random sequence, adder, master oscillator, phase modulator, mike, amplitude modulator, heterodyne, two mixers, first intermediate frequency amplifier, duplexer, transceiver aerial, high-frequency amplifier, 4^th intermediate frequency amplifier, amplitude limiter, synchronous detector and loud speaker. Aforesaid crashed crew detection hardware comprises a master oscillator, mike, amplitude modulator, heterodyne, two mixers, 3^rd intermediate frequency amplifier, duplexer, transceiver aerial, high-frequency amplifier, 2^nd intermediate frequency amplifier, amplitude limiter, synchronous detector, loud speaker, push-push phase amplifier, two narrow-band filters, binary phase divider, phase detector and recording unit. The system establishes a duplex voice communication between crashed crew and rescue team.

EFFECT: higher accuracy of locating crashed aircraft.

6 dwg