RU2527800C1 - Air breather air intake with plug - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: air intake comprises air breather plug intended for protection of elements of regulation and distribution of mid flight fuel at starting. Said plug is arranged at air intake inlet and features streamlined aerodynamic shape. It can be ejected and includes ejection pyro actuator. Pyro actuator consists of casing, gas generator with throttling orifice, piston ejected along with the plug, collapsible retainer ejected along with piston plug and push piston. Said push piston end can shut off the channel accommodating the piston to be ejected with the plug.

EFFECT: simplified design of plug and its extractor, higher reliability of the latter.

2 cl, 4 dwg

Description

The invention relates to aircraft, to structural elements of aircraft engines, in particular to such as air intake devices and protective devices of various types of jet engines, including ramjet engines (ramjet engine for solid propellant ramjet engines, direct-flow rocket engine RPD, etc.).

Known for the prototype air intake ramjet device (hereinafter referred to as the engine) with a plug located in the air intake device and designed to protect the elements of regulation and distribution of sustainer fuel at start-up mode. After the start-up mode, the plug must be removed to allow unhindered air to enter the combustion chamber of the engine (see “Integrated ramjet solid propellant air-propelled engines”, V.N. Aleksandrov, V.M. Bytskevich, V.K. Verkholomov, M. D. Gramenitsky et al. - M.: IKC "Akademkniga", 2006. - 343 pp., Ill. P. 25, 26, 28, 30, 31). All these essential features are in the proposed technical solution.

A feature of this air intake device is that the plug is located directly in front of the engine combustion chamber, which leads to a decrease in the starting mode of the aircraft due to an increase in aerodynamic drag due to the presence of an open path of the air intake device. In addition, this air intake device has a complex design of the plug and the mechanism for its removal and requires a large amount of testing and testing, while there remains the possibility of getting fragments of the plug into the combustion chamber of the engine, which can lead to damage or destruction of the control elements and the distribution of the sustainer fuel and ultimately the result is inoperability or destruction of the engine itself.

The present invention solves the technical problem of increasing the efficiency of the launch mode of the aircraft by reducing aerodynamic drag, simplifying the design of the plug and the mechanism for its removal, increasing the reliability of the mechanism for removing the plug and ensuring the safety of the engine in working condition.

To solve this technical problem, in the engine air intake device with a plug for protecting control elements and distribution of march fuel at the start mode, the plug is located at the inlet of the air intake device, has a streamlined aerodynamic shape, is resettable and contains a pusher for its reset, the pusher consists of a housing, a gas generator with a throttle washer discharged with a piston plug, a destructible fixing element of a piston discharged with a plug in the housing and pushing EDSS, thus pushing the piston end position closes its end the disposable channel arrangement with a plug piston, and an end surface coincides with the outer surface of the air intake device.

The distinguishing features of the proposed technical solution from the prototype are the following: the pusher consists of a body, a gas generator with a throttle washer, discharged with a piston plug, a destructible fixation element of a piston discharged with a plug in the housing, and a pushing piston, while the pushing piston at the end of the stroke closes the location channel with its end discharged with the plug of the piston, and the surface of the end face of the pushing piston coincides with the outer surface of the air intake device.

Due to the presence of these distinctive features, together with the known ones, it is possible to increase the efficiency of the starting mode of the engine by reducing aerodynamic drag, simplifying the design of the plug and the mechanism for its removal, increasing the reliability of the mechanism for removing the plug and ensuring the engine is in good working condition.

The proposed technical solution can find application in aviation for air intake devices of supersonic and hypersonic aircraft.

The invention is illustrated in figures 1-4.

Figure 1 presents a General view of the location of the resettable stub air intake device.

Figure 2 presents a longitudinal section of an air intake device with a resettable plug and pusher.

Figure 3 presents the position of the reset plug in the process of reset.

Figure 4 presents a longitudinal section of an air intake device after resetting the plug.

Figure 1 shows the intake device 1 and the resettable plug 2.

Figure 2 shows a resettable plug 2, a pusher 3, a pusher body 4, a gas generator 5, a throttle washer 6, a piston 7 discharged with a plug, a destructible fixing element 8 of a piston discharged with a plug in the housing, a pushing piston 9, a stopper cap 10, an adjusting screw 11. The surface of the end face of the pushing piston 9, in contact with the end face of the piston 7 discharged with the plug, is made coinciding with the outer surface of the air intake device.

The device operates as follows.

The resettable plug 2 is located at the inlet of the air intake device 1 and is connected to the pyro-pusher 3 mounted on the air intake device 1 and is supported by the stop 10 with the air intake device. The adjusting screw 11 serves to eliminate mounting gaps when installing the plug.

At the start of flight mode, the plug serves to protect the elements of regulation and distribution of sustainer fuel. Also, the plug serves to protect the engine from foreign objects during operation of the aircraft, including under the carrier.

After the flight start mode, the gas generator 5 of the pusher 3 is triggered, the resulting powder gases through the throttle washer 6 enter the piston cavity 9 above the piston 9. Under the action of the powder gases, the piston 9 acts on the piston 7, which cuts the destructible element 8 and acts on the plug 2. The plug 2 unfolds at a certain angle around the stop 10 and is separated from the air intake device 1 together with the piston 7. The piston 9 closes with its end the channel of the location of the piston discharged with the plug.

Claims (2)

1. An air intake device with an air-jet engine plug to protect the control elements and distribution of march fuel at the starting mode, the plug is located at the entrance to the air intake device, has a streamlined aerodynamic shape, is resettable, and contains a pusher for resetting it, characterized in that the pusher consists of from the housing, the gas generator with a throttle washer, discharged with the plug of the piston, destructible fixation element of the piston discharged with the plug in the housing and push its piston, while pushing the piston end position closes its end discharged from the location of the channel stopper piston. 2. An air intake device with a plug according to claim 1, characterized in that the surface of the end face of the pushing piston coincides with the outer surface of the air intake device.

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