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Russian R&D Institute "Platan" seeks partners for realization of investment projects, based on different applications of electron-beam-pumped-semiconductor laser (EBPL)

Mobile Laser System to Support of Landing Flight Vehicles

The project is aimed at development of the new-generation navigation system which supports of landing flight vehicles at airfields and on unequipped sites under conditions of low visibility and impeding outside lighting.

The system is supposed for:

- forming of light visual-observation zones along the glide path by using a three-color light source of given angular sizes and geometrical shape;

- visual and instrumental information at a slant distance to a flight vehicle and on its position in a color zone;

- safe landing run and taxying after touchdown in alignment along the runway (safety strips).

The small-size mobile system supplements the standard flight-vehicle landing systems in landing at any unequipped navigation sites under extreme weather conditions.

The landing system has a radio beacon that follows a flight vehicle until a pilot sees an optical signal (at a distance of 3-5 km).

In landing, a pilot observes a luminous dot of one of three colors: green - on the glide path, landing authorization; yellow - above the glide path; red -below the glide path. At the same time the radio beacon presents data on a slant distance to the flight vehicle and its position in a color zone.

A special feature of the project is that the system is based on a unique multicolor short light pulse laser emitter. Its emission is of increased duration, especially in the day time, under conditions of impeding lighting and a lower visual distance. Short-pulse operating of the emitter provides further distance measurements with an error 5 m. The laser emitter possesses rather high efficiency (5-10 %), small overall dimensions and mass. A distinction of such lasers is a possibility to form several red-, green-, yellow-color emitting zones on one emitting surface. When the emitting surface is in the focus of an optical system spatial distribution over optical system's target is transformed into the angular one: central beam is green, upper and lower beams are yellow and red, respectively. Thus, by changing a configuration of the emitting areas one can select laser-beam aperture angle, angular energy emission density being conserved.

The flight vehicles landing system based on electron-beam-pumped semiconductor lasers are of no more than 50 kg mass; their power consumption is no more than 100 W.

Comparison with analogs. A comparative analysis of available navigational aids (NA), mostly based on gas lasers, shows that NA on the basis of the emitter proposed offers indisputable advantages: an efficiency of up to 10%, simplicity of presentation of multicolor emission, absence of scanning units, and small mass and overall dimensions. The system as a whole is unique in Russian and world practice.

Degree of mastering. An experimental prototype system was produced and tested under difficult weather conditions.

Patentee's assertion. The key functional units and the laser emitter are asserted by Russian patents. The laser emitter is rewarded with the golden medal and diploma of the "Brussel-Eureca-96"45-th World Invention Salon.

The most important measures to realize the project. Engineering and production of all the system functional units. Manufacture and testing of the system as a whole. Working out and issuance of design and technical documents.

This project is presented by the cooperation of R&D Institute "Platan" and Scientific-Production Firm "Gamma", LTD.

Contact person for this project - Dr. Igor M. Olikhov.

Mail Address: Talsinskaya 20/24, Stchelkovo, Moscow Region, 141100 Russia, Phone: +7 096/ 564-5226. E-mail: