CN105571810A - Translational inner-parallel combined power air intake channel mode conversion device and translational inner-parallel combined power air intake channel mode conversion method - Google Patents

Abstract

The invention discloses a translational inner-parallel combined power air intake channel mode conversion device and a translational inner-parallel combined power air intake channel mode conversion method. The translational inner-parallel combined power air intake channel mode conversion device can be divided into three movable parts, namely a shunting board, a ramjet channel lower wall surface body and a ramjet channel lower wall surface tail part. Through translation of the ramjet channel lower wall surface body, the shunting board and the ramjet channel lower wall surface tail part are driven to rotate, thereby realizing opening and closing of a ramjet engine. Along with translation of the ramjet channel lower wall surface, the height of the ramjet channel inlet increases gradually, thereby linearly increasing flow of the ramjet engine channel and linearly reducing the flow of a turbine engine channel.

Description

Parallel combination power air intake duct MODAL TRANSFORMATION OF A device and method in a kind of flatly moving type

Technical field

The invention belongs to assembly power air intake duct Model design technique field, especially for parallel combination power air intake duct MODAL TRANSFORMATION OF A device and method in a kind of flatly moving type.

Background technology

The hypersonic propulsion system of air suction type is the gordian technique of development hypersonic aircraft, and under the application background emphasizing aviation integral, air suction type hypersonic propelling field is subject to the great attention of domestic and international associated specialist.The ATREX project of Japan have studied the propulsion system that a kind of pre-cooling type TBCC propulsion system can be used as hypersonic aircraft; The LAPCAT project in Europe is in a kind of TBCC propulsion system that can be used for civilian hypersonic aircraft of research; The FaCET Project design of the U.S. a kind of TBCC propulsion system of verification experimental verification, be designed on Horizontal Take-off and Landing, reusable hypersonic aircraft; Simultaneously domestic relevant universities and colleges have also carried out the overall performance analysis of TBCC propulsion system and TBCC Design of Inlet and verification experimental verification work.Turbine base combination circulation (TBCC) engine is combined by turbine engine and punching engine, with its reusability, can one of the feature such as Horizontal Take-off and Landing and the high specific impulse ideal power device becoming Air-breathing hypersonic vehicle.

MODAL TRANSFORMATION OF A process is the process that TBCC propulsion system turbine mode and punching press/ultra-combustion ramjet mode are changed mutually.From air intake duct aspect, MODAL TRANSFORMATION OF A process need ensures to enter the flow equilibrium of turbine and punching press/scramjet engine and flow quality meets the demands, and whole TBCC propulsion system just can be made to play its advantage.The overall performance analysis of TBCC combined cycle engine shows that engine total performance is very responsive to inlet characteristic.All particular study is carried out to MODAL TRANSFORMATION OF A process in the research project of external TBCC propulsion system.The proof machine HYPR90-C of Japan HYPR plan is the tandem TBCC engine combined by change geometry turbofan engine and punching engine.The smooth transition of this proof machine MODAL TRANSFORMATION OF A process thrust and total flow by control realization to 8 regulated variables and do not occur the stall of fan/compressor and the unstable operation of stamping combustion chamber.The NASA of the U.S. has carried out the test of loong shunt formula TBCC air intake duct MODAL TRANSFORMATION OF A at the supersonic wind tunnel of 1 × 1 foot and 10 × 10 feet.The stable TBCC air intake duct MODAL TRANSFORMATION OF A process of verification experimental verification can realize.In addition domestic universities and colleges and relevant unit have also carried out the research of MODAL TRANSFORMATION OF A, demonstrated the importance of tandem and the process study of combination in parallel engine MODAL TRANSFORMATION OF A by numerical simulation, verification experimental verification and theoretical analysis three kinds of modes, adopt the patten's design MODAL TRANSFORMATION OF A rule of theoretical analysis to make it meet thrust smooth transition principle.

Traditional interior parallel air intake duct MODAL TRANSFORMATION OF A is the distribution being realized flow by the rotation of spreader plate, in spreader plate rotation process, the area ratio of turbine/punching press path partially will change a lot, the change of flight force and moment that simultaneously rotation process causes will likely cause the change at flight vehicle aerodynamic center, and this brings difficulty to the control of aircraft.If the mode of translation therefore can be adopted to realize closedown and the unlatching of MODAL TRANSFORMATION OF A valve, that not only can reduce spreader plate motion realizes difficulty, can also alleviate the impact of change on flying vehicles control of flight force and moment simultaneously.

Summary of the invention

Be directed to above-mentioned the deficiencies in the prior art, the object of the present invention is to provide parallel combination power air intake duct MODAL TRANSFORMATION OF A device and method in a kind of flatly moving type, realized the distribution of flow with parallel air intake duct MODAL TRANSFORMATION OF A in solving in prior art by the rotation of spreader plate, be difficult to the problem that aircraft is controlled.

For achieving the above object, parallel combination power air intake duct MODAL TRANSFORMATION OF A device in a kind of flatly moving type of the present invention, it is made up of three movable members, be respectively spreader plate, punching press channel wall face main body and punching press channel wall face afterbody, driven the rotation of spreader plate and punching press channel wall face afterbody by the translation of punching press channel wall face main body, realize the opening and closing of punching engine passage.

Preferably, along with the translation in punching press channel wall face, punching press feeder connection height increases gradually, thus the flow of punching engine passage linearly increases, and the flow of turbine engine passage linearly reduces.

The mode that device of the present invention can realize translation completes MODAL TRANSFORMATION OF A process, and that reduces spreader plate motion realizes difficulty, also can meet MODAL TRANSFORMATION OF A process turbine engine flow simultaneously and reduce, the requirement that punching engine flow increases.

The present invention also provides a kind of parallel combination power air intake duct MODAL TRANSFORMATION OF A method in flatly moving type, comprises as follows:

Punching press channel wall face main body carries out translation, under the guiding of punching press channel wall face main body, spreader plate, punching press channel wall face afterbody rotate around respective root hinge central point respectively, by the translation in punching press channel wall face, the inlet area of punching press passage is increased gradually, ensure punching press passage air-flow.

Beneficial effect of the present invention:

The present invention can realize replacing the mode of rotating to carry out interior parallel TBCC air intake duct MODAL TRANSFORMATION OF A with translation, and that reduces spreader plate motion realizes difficulty, can also alleviate the impact of change on flying vehicles control of flight force and moment simultaneously.

Accompanying drawing explanation

Fig. 1 is parallel air intake duct schematic diagram in the present invention.

Fig. 2 is the partial enlarged drawing of Fig. 1.

Fig. 3 is turbine mode air intake duct schematic diagram.

Fig. 4 is inter-modal air intake duct schematic diagram.

Fig. 5 is punching press mode air intake duct schematic diagram.

Fig. 6 is MODAL TRANSFORMATION OF A process turbine/punching press channel capacity index variation rule figure.

Embodiment

For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.

Interior parallel TBCC air intake duct shares supersonic speed external pressure section and interior pressure section, by part flow arrangement, passage is divided into turbine channel and punching press passage after venturi; Turbine channel provides air-flow for turbine engine, and punching press passage provides air-flow for punching engine.In MODAL TRANSFORMATION OF A process, two simultaneous firings, air-flow is by entering turbine/punching engine after part flow arrangement.

With reference to shown in Fig. 1, parallel combination power air intake duct MODAL TRANSFORMATION OF A device in a kind of flatly moving type of the present invention, it is made up of three movable members, be respectively spreader plate 1, punching press channel wall face main body 2 and punching press channel wall face afterbody 3, driven the rotation of spreader plate 1 and punching press channel wall face afterbody 3 by the translation of punching press channel wall face main body 2, realize the opening and closing of punching engine passage.

In MODAL TRANSFORMATION OF A process, along with the translation in punching press channel wall face, punching press feeder connection height increases gradually, thus the flow of punching engine passage linearly increases, owing to there is not the hastening phenomenon of local in punching press passage entirety generation translation therefore punching press passage, this is conducive to the loss reducing air-flow.Fig. 3-5 gives the part flow arrangement figure of MODAL TRANSFORMATION OF A process 3 exemplary position.

Parallel combination power air intake duct MODAL TRANSFORMATION OF A method in a kind of flatly moving type of the present invention, comprises as follows:

Punching press channel wall face main body carries out translation, and under the guiding of punching press channel wall face main body, spreader plate, punching press channel wall face afterbody are respectively around respective root hinge central point O ₁, O ₂rotate, by the translation in punching press channel wall face, the inlet area of punching press passage is increased gradually, ensure punching press passage air-flow.

With reference to Fig. 6, result display is along with the translation of MODAL TRANSFORMATION OF A device, and punching press feeder connection height is gradually in increase, and the flow entering punching engine passage increases gradually, and the flow entering turbine engine passage reduces gradually, and coefficient of flow linearly changes; Illustrate that the present invention can not only realize the object shunted, and make the linear change of uniform flow.

Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.

Claims (3)

1. parallel combination power air intake duct MODAL TRANSFORMATION OF A device in a flatly moving type, it is characterized in that, it is made up of three movable members, be respectively spreader plate, punching press channel wall face main body and punching press channel wall face afterbody, driven the rotation of spreader plate and punching press channel wall face afterbody by the translation of punching press channel wall face main body, realize the opening and closing of punching engine passage.

2. parallel combination power air intake duct MODAL TRANSFORMATION OF A device in flatly moving type according to claim 1, it is characterized in that, along with the translation in punching press channel wall face, punching press feeder connection height increases gradually, thus the flow of punching engine passage linearly increases, the flow of turbine engine passage linearly reduces.

3. a parallel combination power air intake duct MODAL TRANSFORMATION OF A method in flatly moving type, is characterized in that, comprise as follows:

Punching press channel wall face main body carries out translation, under the guiding of punching press channel wall face main body, spreader plate, punching press channel wall face afterbody rotate around respective root hinge central point respectively, by the translation in punching press channel wall face, the inlet area of punching press passage is increased gradually, ensure punching press passage air-flow.