A three-dimensional vector engine tail nozzle for aviation

Abstract

The present invention relates to an aviation three-dimensional vector engine tail nozzle, including a casing, an adjusting piece, an adjusting piece convergence motor, a traction rope, an adjusting piece expansion spring, an adjusting piece ball joint, an adjusting piece tail end connector, a mounting seat, a mounting hole, a motor output shaft and an independent fixed end. The adjusting piece is connected to the casing through an adjusting piece ball joint; the adjusting pieces are connected to each other through an adjusting piece tail end connector; the adjusting piece expansion spring is respectively connected to the casing and the adjusting piece; the adjusting piece convergence motor is installed on the casing; one end of the traction rope is connected to the motor output shaft, and the other end is connected to the independent fixed end of another adjusting piece convergence motor. The aviation three-dimensional vector engine tail nozzle of the present invention shortens and extends the effective length of the traction rope through the adjusting piece convergence motor, and works together with the elastic force of the adjusting piece expansion spring to change the size and direction of the tail nozzle aperture, and adjust the outlet airflow pressure, and has the advantages of less actuators, simple control and low price.

Description

Technical Field

[0001] The invention relates to an aviation three-dimensional vector engine tail nozzle, belonging to the technical field of aviation engines. Background Art

[0002] New fighters represented by the fourth-generation aircraft such as Su-35 and Su-57 have good maneuverability and short-distance takeoff and landing capabilities, which mainly rely on thrust vectoring technology. It changes the direction of engine exhaust by real-time control of the deflection of the engine tail nozzle. When the aircraft is performing low-speed, high-angle maneuvering flight and the control surface is almost ineffective, the additional control torque provided by the thrust vector can be used to control the aircraft's maneuvering flight. In addition, the aircraft's control surface can be greatly reduced, thereby improving the aircraft's stealth performance.

[0003] The axisymmetric vector nozzle currently used in aircraft engines can achieve 360° vector deflection in all directions. However, it requires dozens of actuators to work together to achieve this function, and has a complex structure, high control difficulty, high weight, and high manufacturing and maintenance costs. Currently, there is no vector nozzle that can achieve the function of 360° vector deflection in all directions with fewer components, simpler structure, lighter weight, and lower cost. Summary of the invention

[0004] The purpose of the present invention is to provide an aviation three-dimensional vector engine tail nozzle to solve the problems that the current aviation three-dimensional vector engine tail nozzle has multiple execution structures, complex control and high price.

[0005] The tail nozzle of an aviation three-dimensional vector engine of the present invention comprises a casing, an adjusting plate, an adjusting plate convergence motor, a traction rope, an adjusting plate expansion spring, an adjusting plate ball joint, an adjusting plate tail end connector, a mounting ring and a fixed end; it is characterized in that the adjusting plate is connected to the casing through an adjusting plate ball joint; the adjusting plates are connected to each other through an adjusting plate tail end connector; the mounting ring comprises five parts: mounting ring one, mounting ring two, mounting ring three, mounting ring four and mounting ring five; mounting ring five is fixed on the casing; the adjusting plate expansion spring is respectively connected to the mounting rings on the casing and the adjusting plate; the adjusting plate convergence motor one, adjusting plate convergence motor two and adjusting plate convergence motor three are respectively installed on the casing in pairs with fixed end one, fixed end two and fixed end three; one end of the traction rope is connected to the adjusting plate convergence motor The adjusting piece convergence motor is distributed at an equal interval of 120° along the outer circle of the casing; the mounting ring one, mounting ring two, and mounting ring three are arranged in three rows along the axial direction, each occupying an arc length of 120 degrees, and each row is symmetrically arranged relative to the adjusting piece convergence motor; the traction ropes are independent of each other; one end of the traction rope is connected to the adjusting piece convergence motor one, and the other end passes through the mounting ring one in sequence along the clockwise direction from the tail end to the casing, and is connected to the fixed end two; one end of the traction rope is connected to the adjusting piece convergence motor two, and the other end passes through the mounting ring two in sequence along the clockwise direction from the tail end to the casing, and is connected to the fixed end three; one end of the traction rope is connected to the adjusting piece convergence motor three, and the other end passes through the mounting ring three in sequence along the clockwise direction from the tail end to the casing, and is connected to the fixed end one.

[0006] There are two mounting rings on the adjusting plate for connecting the adjusting plate expansion spring side by side, and the adjacent mounting rings on the two adjacent adjusting plates are symmetrically arranged relative to the mounting ring on the receiver, and the adjusting plate expansion spring is connected to the mounting ring and the mounting ring in a V shape.

[0007] There are two mounting rings on the adjusting plate for the traction rope to pass through side by side, and one traction rope needs to pass through the two mounting rings on one adjusting plate at the same time.

[0008] When the adjusting plate expansion spring is in a free state, the outer circle formed at the tail end of the adjusting plate is larger than the outer circle at the top end, and the traction rope reaches the maximum length at this time; when the adjusting plate expansion spring is in an extreme tensile state, the outer circle formed at the tail end of the adjusting plate is reduced to the minimum aperture, and the traction rope is retracted to the minimum length at this time; when the adjusting plate expansion spring is stretched to an intermediate state, the outer circle formed at the tail end of the adjusting plate is equal to the outer circle at the top end, and the traction rope is retracted to the intermediate length at this time.

[0009] Compared with the prior art, the tail nozzle of the aviation three-dimensional vector engine of the present invention shortens and extends the effective length of the traction rope through the adjustment plate convergence motor, and works together with the elastic force of the adjustment plate expansion spring to change the size and direction of the tail nozzle aperture and adjust the outlet airflow pressure. It has the advantages of being driven by three motors, having fewer actuators, simple control, and low price. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the three-dimensional structure when the outer circle of the rear end of the adjusting plate is equal to the outer circle of the top end;

[0011] Figure 2 It is a schematic diagram of the structure of the tail nozzle part of the present invention;

[0012] Figure 3 This is a schematic diagram of the top structure of the regulating piece of the present invention;

[0013] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention when the outer circle of the tail end of the adjusting plate is smaller than the outer circle of the top end;

[0014] Figure 5 It is a top view of the adjusting plate of the present invention when the outer circle of the tail end is smaller than the outer circle of the top end;

[0015] Figure 6 It is a schematic diagram of the three-dimensional structure of the tail nozzle after contraction and deflection of the present invention;

[0016] Figure 7 It is a top view of the tail nozzle of the present invention after contraction and deflection;

[0017] Figure 8 This is a top view of the adjusting plate of the present invention when the outer circle of the rear end is equal to the outer circle of the top end.

[0018] In the figure: 1. casing; 2. adjusting plate; 3. adjusting plate convergence motor; 4. traction rope; 5. adjusting plate expansion spring; 6. adjusting plate ball joint; 7. adjusting plate tail end connector; 8. mounting ring; 9. fixed end. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The tail nozzle of an aviation three-dimensional vector engine of the present invention comprises a casing (1), an adjusting plate (2), an adjusting plate convergence motor (3), a traction rope (4), an adjusting plate expansion spring (5), an adjusting plate ball joint (6), an adjusting plate tail end connecting piece (7), a mounting ring (8) and a fixed end (9); the adjusting plate (2) is connected to the casing (1) via the adjusting plate ball joint (6); the adjusting plates (2) are connected to each other via the adjusting plate tail end connecting piece (7); the mounting ring (8) comprises (8-1, 8-2, 8-3, 8-4, 8- 5) five parts; a mounting ring (8-5) is fixed on the casing (1); the adjusting plate expansion spring (5) is respectively connected to the mounting rings (8) on the casing (1) and the adjusting plate (2); the adjusting plate convergence motors (3-1, 3-2, 3-3) are respectively installed in pairs with fixed ends (9-1, 9-2, 9-3) on the casing (1); one end of the traction rope (4-1, 4-2, 4-3) is connected to the adjusting plate convergence motor (3-1, 3-2, 3-3), and the other end is connected to the fixed end (9-1, 9-2, 9-3).

[0021] The regulating piece convergence motors (3-1, 3-2, 3-3) are distributed at equal intervals of 120° along the outer circle of the casing (1); the mounting rings (8-1, 8-2, 8-3, 8-4) are arranged in four rows along the axial direction, each occupying an arc length of 120 degrees, and each row is symmetrically arranged relative to the regulating piece convergence motors (3-1, 3-2, 3-3); the traction ropes (4-1, 4-2, 4-3) are independent of each other; one end of the traction rope (4-1) is connected to the regulating piece convergence motor (3-1), and the other end is connected along the direction from the tail end to the The traction rope (4-2) passes through the mounting ring (8-1) in a clockwise direction when viewed from the receiver and is connected to the fixed end (9-2); one end of the traction rope (4-2) is connected to the adjustment piece convergence motor (3-2), and the other end passes through the mounting ring (8-2) in a clockwise direction when viewed from the tail end to the receiver and is connected to the fixed end (9-3); one end of the traction rope (4-3) is connected to the adjustment piece convergence motor (3-3), and the other end passes through the mounting ring (8-3) in a clockwise direction when viewed from the tail end to the receiver and is connected to the fixed end (9-1).

[0022] Two mounting rings (8-4) for connecting the adjusting plate expansion spring (5) are arranged side by side on the adjusting plate (2), and the adjacent mounting rings (8-4) on two adjacent adjusting plates (2) are arranged symmetrically relative to the mounting ring (8-5) on the receiver (1), and the adjusting plate expansion spring (5) is connected to the mounting ring (8-4) and the mounting ring (8-5) in a V shape.

[0023] The adjusting plate (2) has two mounting rings (8-1, 8-2, 8-3) arranged side by side for the traction rope (4-1, 4-2, 4-3) to pass through, and one traction rope (4) needs to pass through two mounting rings (8) on one adjusting plate (2) at the same time.

[0024] When the adjusting piece expansion spring (5) is in a free state, the outer circle formed at the rear end of the adjusting piece (2) is larger than the outer circle at the top end, and at this time the traction rope (4-1, 4-2, 4-3) reaches a maximum length; when the adjusting piece expansion spring (5) is in an ultimate tensile state, the outer circle formed at the rear end of the adjusting piece (2) is reduced to a minimum aperture, and at this time the traction rope (4-1, 4-2, 4-3) is retracted to a minimum length; when the adjusting piece expansion spring (5) is stretched to an intermediate state, the outer circle formed at the rear end of the adjusting piece (2) is equal to the outer circle at the top end, and at this time the traction rope (4-1, 4-2, 4-3) is retracted to an intermediate length.

[0025] In summary, the tail nozzle of the aviation three-dimensional vector engine of the present invention has three traction ropes (4-1, 4-2, 4-3) wound around the adjustment plate (2), and the traction ropes (4) are independently controlled by the adjustment plate convergence motor (3), one end of which is connected to the motor output shaft (10), and the other end is directly connected to the independent fixed end (11) of another adjustment plate convergence motor (3). The different lengths of the motor output shaft (10) and the independent fixed end (11) enable the three traction ropes (4-1, 4-2, 4-3) to be located at three different horizontal planes when not retracted. Through the independent control of the traction ropes (4) by each adjustment plate convergence motor (3), the three traction ropes (4) can achieve the change of the tail nozzle diameter size and direction in different retracted states, and adjust the outlet airflow pressure.

[0026] In the description of the present invention, the terms "inside", "outside", "up", "down", "front", "back", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An aviation three-dimensional vector engine tail nozzle, comprising a casing (1), an adjusting plate (2), an adjusting plate convergence motor (3), a traction rope (4), an adjusting plate expansion spring (5), an adjusting plate ball joint (6), an adjusting plate tail end connector (7), a mounting ring (8) and a fixed end (9); characterized in that: The adjusting plate (2) is connected to the casing (1) via an adjusting plate ball joint (6); the adjusting plates (2) are connected to each other via an adjusting plate tail end connector (7); the mounting ring (8) comprises five parts, namely, mounting ring one (8-1), mounting ring two (8-2), mounting ring three (8-3), mounting ring four (8-4), and mounting ring five (8-5); the mounting ring five (8-5) is fixed to the casing (1); the adjusting plate expansion spring (5) is respectively connected to the mounting rings on the casing (1) and the adjusting plate (2); the adjusting plate convergence motor one (3-1), the adjusting plate convergence motor two (3-2), and the adjusting plate convergence motor three (3-3) are respectively installed in pairs with the fixed end one (9-1), the fixed end two (9-2), and the fixed end three (9-3) on the casing (1); one end of the traction rope (4) is connected to the adjusting plate convergence motor (3), and the other end is connected to the fixed end (9); the adjusting plate convergence motor (3) is connected along the casing ( 1) The outer circle is evenly spaced at 120°; the mounting ring 1 (8-1), the mounting ring 2 (8-2), and the mounting ring 3 (8-3) are arranged in three rows along the axial direction, each occupying an arc length of 120 degrees, and each row is symmetrically arranged relative to the adjustment piece convergence motor (3); the traction ropes (4) are independent of each other; one end of the traction rope 1 (4-1) is connected to the adjustment piece convergence motor 1 (3-1), and the other end passes through the mounting ring 1 (8-1) in a clockwise direction from the tail end to the casing. , connected to the fixed end two (9-2); one end of the traction rope two (4-2) is connected to the adjustment piece convergence motor two (3-2), and the other end passes through the mounting ring two (8-2) in a clockwise direction from the tail end to the receiver, and is connected to the fixed end three (9-3); one end of the traction rope three (4-3) is connected to the adjustment piece convergence motor three (3-3), and the other end passes through the mounting ring three (8-3) in a clockwise direction from the tail end to the receiver, and is connected to the fixed end one (9-1).

2. The tail nozzle of the aviation three-dimensional vector engine according to claim 1, characterized in that: The adjusting plate (2) has two mounting rings (8-4) arranged side by side for connecting the adjusting plate expansion spring (5), and the adjacent mounting rings (8-4) on two adjacent adjusting plates (2) are arranged symmetrically relative to the mounting ring (8-5) on the receiver (1), and the adjusting plate expansion spring (5) is connected to the mounting ring (8-4) and the mounting ring (8-5) in a V shape.

3. The tail nozzle of the aviation three-dimensional vector engine according to claim 1, characterized in that: The adjusting plate (2) has two mounting rings arranged side by side for the traction rope (4) to pass through, and one traction rope (4) needs to pass through two mounting rings (8) on one adjusting plate (2) at the same time.

4. The tail nozzle of the aviation three-dimensional vector engine according to claim 1, characterized in that: When the adjusting piece expansion spring (5) is in a free state, the outer circle formed at the rear end of the adjusting piece (2) is larger than the outer circle at the top end, at which time the traction rope (4) reaches a maximum length; when the adjusting piece expansion spring (5) is in an extreme tension state, the outer circle formed at the rear end of the adjusting piece (2) is reduced to a minimum aperture, at which time the traction rope (4) is retracted to a minimum length; when the adjusting piece expansion spring (5) is stretched to an intermediate state, the outer circle formed at the rear end of the adjusting piece (2) is equal to the outer circle at the top end, at which time the traction rope (4) is retracted to an intermediate length.

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