RU2433294C1 - Ram jet - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: ram jet is related to the transport machine building industry and is designed for application in aviation equipment. The ram jet consists of an air intake, a combustion chamber equipped with a start-up nozzle with a spark plug, and an extension pipe with a nozzle attachment. A force injector is mounted into the wall of the combustion chamber, which is adjacent to the air intake. The inlet nozzle of the force injector is connected to the inner cavity of high pressure of the combustion chamber equipped with a diaphragm made of a fan of tabs twisted along the spiral. In the air intake, in the zone of air speed flow, there is a fuel injector connected to the fuel tank by means of a pipeline.

EFFECT: improved reliability in operation, durability and simplification of design.

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Description

In-line jet engine - PRD, refers to the industry of transport engineering.

Jet engines RU (11) 2303152 (13) C1, RU (11) 2305198 (13) C1, turbojet engines RU (11) 2386050 (13) C2, chamber engines RU (21) 2008 137338/06 ( 13), as well as the design of individual components included in the engine device, such as: air intake RU (21) 2008 141712/11 (13) A, fuel injection valve RU 2008 139317/06, annular combustion chamber of a gas turbine engine RU (21) 2008 137660/06 (13) A, fuel injection system on the rear wall of the combustion chamber RU (21) 2008 138063/06 (13) A, ... etc.

The above engines have a common drawback: a complex design, strict regulations on durability, reliability and are very noisy.

The objective of the invention is to remedy the above disadvantages.

The problem is solved by the design of a ramjet engine consisting of an air intake, a combustion chamber, equipped with a starting nozzle, equipped with a spark plug, an extension pipe with a nozzle nozzle, in which the wall of the combustion chamber adjacent to the air intake is equipped with a discharge injector, which is connected with a high pressure inlet to the cavity pressure of the combustion chamber equipped with a diaphragm consisting of a fan of petals twisted in a spiral, and an air intake in the zone of high-speed flow ozduha provided with a fuel injector coupled to the conduit to the fuel tank of the aircraft, and the injector is made annular type.

The drawings show:

figure 1 is a longitudinal axial section of the engine;

figure 2 - view In figure 1;

figure 3 - view a in figure 1;

figure 4 - node 1 in figure 1.

The direct-flow jet engine contains: a pear-shaped combustion chamber 1, which is functionally more similar to a boiler, in which a diaphragm 2 is formed, formed by a fan of “a” petals twisted in a spiral, a starting nozzle 3 equipped with a spark plug 4, an injection injector 5 connected by a nozzle 6 with a high-pressure cavity of the combustion chamber, an air intake 7 adjacent to the discharge injector and equipped with a fuel injector 8 located in the zone of high-speed air flow, an extension pipe 9 with a nozzle asadkom 10, ribs-brackets 11, rigidly mounted on the body of the combustion chamber, on which the fairings 12-13 of the aircraft nacelle are mounted.

The starting nozzle is connected by pipelines to a fuel tank and a cylinder of compressed air (120 atm.) Via email. valve and booster pump. The spark plug is supplied to the battery through the start button. The start-up system and the working system work on the basis of a relay –RV command, which provides the engine to idle. The fuel injector is connected to the fuel tank via email. valve and booster pump.

Engine operation.

Launch. The "start" button is pressed, - the relay is triggered - РВ: the fuel pump for fuel in the tank is turned on, el. the valve opens the supply of fuel and compressed air to the starting nozzle, current is supplied to the spark plug, the fuel ignites in the combustion chamber with a flash. The pressure in the combustion chamber rises by the impulse, because the diaphragm prevents the free exit of gases into the extension pipe, so the gases rush through the free volume pipe to the cone of the injection injector, which pumps air from the air intake into the combustion chamber (by the principle that a steam injector pumps water into the boiler with steam from the same boiler), el. the valve opens fuel access to the fuel injector. Now the fuel mixture is pumped into the combustion chamber. The working system of the fuel supply of the combustion chamber entered into operation. After a minute, the starting system turns off. The engine is idling.

Gases from the combustion chamber enter the diaphragm, are twisted in the annular space - the pressure energy is converted into velocity energy (depending on the twist of the spiral of the diaphragm petals), the vortex flow passes through the extension pipe, accelerates once more on the nozzle nozzle, and the jet stream is converted into engine thrust.

Engine cooling (in statics) is carried out due to the movement of air in the sub-cavity, which is organized by the discharge of air behind the nozzle nozzle.

The ramjet engine is composed of well-known components that have shown reliability and durability in operation. There are no moving or rotating parts in the engine.

The result of this arrangement of the engine and achieved a positive result.

Claims (1)

In-line jet engine - PRD, consisting of an air intake, a combustion chamber equipped with a starting nozzle with a spark plug, an extension pipe with a nozzle nozzle, characterized in that a pressure injector is mounted in the wall of the combustion chamber adjacent to the air intake, the inlet of which is connected to the internal cavity high pressure combustion chamber equipped with a diaphragm consisting of a fan of petals twisted in a spiral, and in the air intake - the zone of high-speed air flow is placed fuel The second injector connected to the fuel tank by a pipeline.

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