FLIGHT RECORDER WITH SIGNALLING SYSTEM Russian patent published in 2014 - IPC B64D25/20 G08B25/10 G01S5/02 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering and can be used for search of flight recorder after incident. Flight recorder (2) comprises sound and electromagnetic wave generator unit (5), power supply (6), changeover lever (7), compressed air chamber (8), rubber chamber (9), parachute (11), flexible antenna (12), recess (13), sound radiator (14), cable (15), connector (16), plug, socket, sling, valve handle and air duct pipes. It incorporates GPS-receiver and control station. GPS-receiver comprises transceiver antenna, duplexer, phase doubler, first and second narrow-band filters, phase halver, phase detector and computer. Electromagnetic wave generator comprises modulation code shaper, delay line, pseudorandom sequence generator, adder, phase manipulator and power amplifier. Control station comprises receiving antenna, HF amplifier, search unit, local oscillator, mixer, intermediate frequency amplifier, signal detector, first and second spectrum analyzers, phase doubler, comparator, threshold unit, delay line, switch, phase halver, narrow-band filter, phase detector and registration unit.

EFFECT: accelerated search.

8 dwg