Helicopter obstacle warning system

Details Helicopter obstacle warning system Helicopter obstacle warning system

1993-03-08

1994-12-06

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

340946, 340961, 340963, 3561411, G01C 308, G08B 2100, G08B 2300, G08G 504

Patent

active

053715810

ABSTRACT:
A helicopter hazardous ground object warning system has a horizontally rotating beam from a laser rangefinder which detects and measures the distance to ground objects which may present a hazard to a helicopter during hover, takeoff and landing. The rotating laser beam from the rangefinder is positioned on the fuselage of a helicopter to create a quasi-horizontal (planar) scan pattern parallel to the earth's surface. The maximum and minimum ranges which can be measured by the rangefinder to objects and to ground personnel are preset. The minimum range can be used for blanking range measurements as a function of angle from helicopter parts, such as landing skids or wheel structures. A pilot warning system for hazardous objects may include an audible or visual alarm which may include a screen positioning all objects relative to the helicopter rotors and an external audible personnel warning system alerting ground personnel in the hazardous zone.

REFERENCES:
patent: 3810139 (1974-05-01), Fergusson
patent: 4572662 (1986-02-01), Silverman
patent: 4695013 (1987-09-01), Trampnau
patent: 4902126 (1990-02-01), Koechner
patent: 4916445 (1990-04-01), Crossley
patent: 4995722 (1991-02-01), Sutour
patent: 5210586 (1993-05-01), Grage et al.

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