RU56744U1 - MASKING WATER-FUEL AEROSOL GENERATOR - Google Patents

Abstract

Camouflage water-fuel aerosol generator refers to aerosol-forming devices and is designed to create extended camouflage curtains that counteract high-precision weapons with infrared (IR) and radar (RL) guidance, as well as designed to hide information signs of protected objects in the visible wavelength range.

The generator allows you to create an aerosol curtain of great length and specified masking qualities, in the visible, IR and radar ranges. This is achieved through the use of a high-temperature, high-pressure jet of a turbojet engine as a carrier and a partial evaporator of fine aerosol, consisting of droplets of water and diesel fuel injected into the jet through a block of nozzles in a specific section of the jet.

The generator can be stationary or installed on any vehicle with a carrying capacity of at least 2 tons, with a platform. Its rotary device allows you to change the direction of the protective jet within 30 ° in the vertical and horizontal planes.

Description

The utility model “Camouflage water-fuel aerosol generator” refers to aerosol generators designed to create long curtains for various purposes and can be used to create aerosol curtains that counter high-precision weapons with infrared (IR) and radar (RL) guidance, as well as to hide information signs of protected objects in the visible wavelength range.

Smoke bombs used for this purpose (Yu.I. Weitser, GP Luchinsky “Masking Smokes” M. - L., 1947) have a low smoke generation time and an insufficient range of masking of information signs of protected objects.

Known aviation aerosol fog generators designed for chemical treatment of agricultural crops (A.G. Amelin and others. "Fogs serve man", ed. "Science", 1985, p. 69). Such a generator consists of a combustion chamber in which liquid fuel is burned, exhaust nozzles and a device for supplying liquid chemical to the exhaust stream in the nozzle region. In this case, the liquid reagent is crushed by a high-speed flow of hot gases and its partial evaporation, and with subsequent mixing with atmospheric air, partial condensation of the vapor and the formation of an aerosol cloud consisting of both very small and large drops of liquid. This generator is not intended to create a long-term “hanging” cloud with masking properties.

The proposed utility model of the “Camouflage water-fuel aerosol generator” also uses the principle of aerosol thermogeneration, but unlike its counterpart, the fluid supply device consists of four pneumatic sprayers located symmetrically around the circumference in a hot gas stream, two of which are located diametrically opposite, serve for water injection, and the other two, also diametrically opposite, for diesel fuel injection. Sprayers provide preliminary crushing of liquids up to a diameter of 5-70 microns, which facilitates the combustion of fuel droplets in a gas stream and the evaporation of water droplets, followed by condensation in the atmosphere, and this, in turn, increases the survivability of the aerosol curtain and provides a masking effect in the visible and infrared wavelength ranges of the electromagnetic spectrum.

Thermal generation is provided by a turbojet propulsion system (TRDU) with start, control and emergency stop systems. In addition to a turbojet engine and a fluid supply device, the generator includes a slewing ring and a generator control panel.

When testing this generator, the following technical result was obtained:

- attenuation coefficient of electromagnetic radiation in the wavelength range:

0.4 ÷ 0.7 μm - 5.5;

3.5 ÷ 5.0 microns - 4.0;

8.0 ÷ 9.0 μm - 4.0,

which provides reliable masking of information signs of protected objects in the infrared and visible wavelengths.

The proposed “Camouflage water-fuel aerosol generator” is depicted in Figure 1.

Description and sequence of work:

- start the turbojet engine (1) from an autonomous start system;

- supply water and diesel fuel to the nebulizers (3, 4) using pumps;

- using a rotary device (5) direct the aerosol stream (6) to a predetermined location (rotation range 30 ° in the vertical and horizontal planes).

As a turbojet engine use an aircraft gas turbine engine type M701 C.

The sprayer is a combined nozzle (RF patent 2056952), providing the initial crushing of working fluids using the pneumomechanical method of droplet formation. Two diesel nozzles (3) and two water nozzles (4) mounted symmetrically around the circumference inside the jet of hot gas (2) at a distance of 120-400 mm from the engine nozzle exit are mounted in the block. This range of distances from the nozzle exit is selected from the condition that the nozzles are covered by the hottest area of the exhaust stream, which ensures the most complete combustion and evaporation of the sprayed liquids.

Claims (1)

A camouflage water-fuel aerosol generator for creating an extended aerosol curtain, containing a gas turbine engine, a slewing rotary device, a remote start and control unit, a spray device unit that includes two diesel fuel nozzles and two water nozzles located symmetrically around the circumference and at a distance of 120 ÷ 400 mm from the cut of the engine nozzle.