An actively controllable stability-augmenting drogue for soft air refueling

Abstract

The present invention discloses an actively controllable stability-increasing drogue for soft air refueling, which comprises an oil delivery pipe, a drogue, a stabilizing parachute, an adjusting sleeve and a driving module; the adjusting sleeve can freely expand and contract, and the inner wall is in the shape of a hollow cylinder with openings at both ends; the adjusting sleeve is sleeved outside the drogue, the stabilizing parachute is arranged at the tail of the drogue, and the drogue is adjusted to perform eccentric motion through the driving module. By controlling the eccentric motion of the adjusting sleeve, the present invention generates a large control force, and the deflection decoupling of two degrees of freedom around the axis of the drogue can be carried out simultaneously, greatly improving the controllability and the control force, and being able to effectively resist the disturbing force caused by the head wave effect during the air refueling process, and significantly improving the instability of the drogue hose system caused by the head wave effect of the receiving aircraft head and moderate turbulence disturbance during the air refueling docking process.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial refueling, and in particular to an active controllable stabilizing drogue for soft aerial refueling. Background Art

[0002] Aerial refueling technology holds significant strategic value in the current aviation sector. Hose-and-drogue (or simply "soft-drogue") refueling is widely adopted worldwide due to its simple structure, ease of assembly and disassembly, and minimal requirements for refueling aircraft. The primary component of soft-drogue aerial refueling is a refueling hose with a drogue. The drogue is a core component of the soft-drogue system. The annular stabilizing parachute attached to the drogue forms a funnel-like shape when deployed, increasing the refueling connector's reach and providing sufficient resistance to maintain relative stability despite the combined effects of wingtip vortices, engine jet flow, and atmospheric turbulence.

[0003] During the final stage of soft refueling docking, the hose-drogue assembly is subject to varying degrees of aerodynamic influences, including the tanker's wake, atmospheric disturbances, and the receiving aircraft's bow wave effect. This severely limits the success rate of soft aerial refueling docking. During high-speed flight, the receiving aircraft slowly approaches the drogue horizontally, causing the airflow near its nose to fluctuate. The flexible hose is extremely sensitive to air disturbances, causing varying degrees of flutter and deflection. This effect is known as the bow wave effect. In practice, the bow wave effect is a major factor in docking failures.

[0004] To overcome the above problems and improve the success rate of aerial refueling docking, the industry has proposed the concept of a controllable active stabilization drogue. The drogue is installed at the tail of the hose, and the movement of the hose is also reflected on the drogue. Improving the controllability of the drogue is directly related to the success rate of aerial refueling. There are many related studies on controllable drogues abroad, and currently there are three approaches:

[0005] The first method is the spoiler control method. The device includes a hose connector, a control unit, and a spoiler. The spoiler is used for control. However, the cone sleeve equipped with the spoiler device is more prone to overload, causing damage to the spoiler, and then to the cone sleeve, and even serious safety accidents.

[0006] The second method is thrust vectoring, which achieves drogue control by adding four high-pressure nozzles on the upper, lower, left and right sides of the stabilizing parachute. However, it is difficult to obtain continuous high-pressure gas and the stabilization effect is difficult to guarantee.

[0007] The third method is the gyro control method, which controls the position of the cone sleeve by installing four high-speed rotating propellers on the cone sleeve. The method of installing propellers on the cone sleeve is too complicated and makes it difficult to retract and extend the cone sleeve.

[0008] Reducing the overall cost and anti-interference capability of the hose-drogue refueling system is key to verifying the practicality of the active stabilization drogue. The following points need to be met:

[0009] 1. Reduce the amplitude and frequency of the cone sleeve movement;

[0010] 2. For use in the current refueling pod, it is required that the control surface be retractable;

[0011] 3. The newly designed control surface will not have a new unstable effect on the cone sleeve;

[0012] 4. System operation and status detection should be wireless;

[0013] 5. The cone sleeve must be an independent system. Summary of the Invention

[0014] The technical problem to be solved by the present invention is to provide an actively controllable and stability-enhancing cone sleeve for soft air refueling to address the defects in the background technology. It can greatly reduce the influence of moderate turbulence in the head wave effect, provide a relatively significant control force, and be sufficient to resist the disturbing force generated by the head wave effect. Since the adjustment sleeve closely adheres to the surface of the cone sleeve when not in use, there is no need to make major changes to the refueling pod, and the integrity of the original system is maintained to the greatest extent.

[0015] The present invention adopts the following technical solutions to solve the above technical problems:

[0016] An actively controllable and stability-enhancing cone sleeve for soft air refueling, comprising an oil delivery pipe, a cone sleeve, a stabilizing parachute, an adjustment sleeve, and a drive module;

[0017] The cone sleeve is hollow and includes a gradually expanding part and a stabilizing part. Among them, the front end of the gradually expanding part is closed and the rear end is open. Its cross-section is circular and the area of the cross-section gradually increases from the front end to the rear end. An oil inlet is provided at the center of the front end face; the stabilizing part is a hollow cylinder with an open front end and a closed rear end. The front end of the stabilizing part and the rear end of the gradually expanding part are coaxially and hermetically connected. An oil outlet is provided at the center of the rear end face of the stabilizing part;

[0018] The oil delivery pipe is arranged inside the cone sleeve, one end is hermetically and fixedly connected to the oil inlet, and the other end is hermetically and fixedly connected to the oil outlet;

[0019] The stabilizing parachute is coaxially fixedly connected to the rear end of the stabilizing part of the cone sleeve;

[0020] The adjustment sleeve includes first to fourth fixed shells and first to fourth sliding plates;

[0021] The first to fourth fixed shells have the same structure, are hollow with both ends open and front and rear closed, and first slide rails and second slide rails parallel to each other are circumferentially provided on the inner wall of the inner cavity;

[0022] The first to fourth sliding plates have the same structure, and first to fourth sliders are provided on their inner walls;

[0023] The first sliding piece is arranged between the first and second fixed shells. The first and second sliders of the first sliding piece respectively cooperate with the first and second sliding rails of the first fixed shell, and the third and fourth sliders of the first sliding piece respectively cooperate with the first and second sliding rails of the second fixed shell, so that the first sliding piece can slide freely between the first and second fixed shells;

[0024] The second sliding piece is arranged between the second and third fixed shells. The first and second sliders of the second sliding piece respectively cooperate with the first and second sliding rails of the second fixed shell, and the third and fourth sliders of the second sliding piece respectively cooperate with the first and second sliding rails of the third fixed shell, so that the second sliding piece can slide freely between the second and third fixed shells;

[0025] The third sliding piece is arranged between the third and fourth fixed shells. The first and second sliders of the third sliding piece respectively cooperate with the first and second sliding rails of the third fixed shell, and the third and fourth sliders of the third sliding piece respectively cooperate with the first and second sliding rails of the fourth fixed shell, so that the third sliding piece can slide freely between the third and fourth fixed shells;

[0026] The fourth sliding piece is arranged between the fourth and first fixed shells. The first and second sliders of the fourth sliding piece respectively cooperate with the first and second sliding rails of the fourth fixed shell, and the third and fourth sliders of the fourth sliding piece respectively cooperate with the first and second sliding rails of the first fixed shell, so that the fourth sliding piece can slide freely between the fourth and first fixed shells;

[0027] The first fixed shell, the first sliding piece, the second fixed shell, the second sliding piece, the third fixed shell, the third sliding piece, the fourth fixed shell, and the fourth sliding piece are successively slidably connected end to end, so that the adjusting sleeve can freely expand and contract, and the inner wall of the adjusting sleeve is in the shape of a hollow cylinder with openings at both ends;

[0028] The driving module includes the first to third hydraulic rods, a central shaft, a rotating member, the first to third bearings, the first to second adjusting rods, a sliding seat, a driving gear, a driven gear, the first to second connecting rods, and the first to second motors;

[0029] The first to third hydraulic rod structures are the same and each includes a hydraulic pipe, a first piston, a second piston, a first piston rod, and a second piston rod. Among them, the hydraulic pipe is a hollow straight pipe with both ends open; the first piston and the second piston are both arranged inside the hydraulic pipe; one ends of the first piston rod and the second piston rod respectively extend into the hydraulic pipe from both ends and are coaxially fixedly connected to the first piston and the second piston respectively. The first piston rod, the first piston, the second piston rod, and the second piston are symmetrically arranged; there are an oil inlet hole and an oil outlet hole connected to an external hydraulic system between the first piston and the second piston in the hydraulic pipe, and the external hydraulic system controls the telescoping of the first piston rod and the second piston rod at both ends of the hydraulic pipe.

[0030] The central axis is arranged inside the conical sleeve stabilizing part, and its two ends are respectively coaxially fixedly connected to the inner rings of the first bearing and the second bearing. There is an installation hole for installing the third bearing at the midpoint thereof.

[0031] The outer rings of the first bearing and the second bearing are both fixedly connected to the stabilizing part, so that the central axis passes through the axis of the stabilizing part.

[0032] The third bearing is arranged in the installation hole of the central axis, and its outer ring is coaxially fixedly connected to the installation hole of the central axis, and the axis of the third bearing is perpendicular to the central axis.

[0033] The rotating part is annular and sleeved outside the central axis. Corresponding first through hole and second through hole for the hydraulic pipe of the third hydraulic rod to pass through are provided on its side wall.

[0034] The hydraulic pipe of the third hydraulic rod sequentially passes through the first through hole, the inner ring of the third bearing, and the second through hole, and is fixedly connected to the rotating part at its first through hole and second through hole, and is fixedly connected to the inner ring of the third bearing, so that the third hydraulic rod is symmetric about the third bearing and the hydraulic pipe of the third hydraulic rod can rotate relative to the central axis.

[0035] The first adjusting rod and the second adjusting rod are symmetrically arranged on both sides of the rotating part, and one end of each is fixedly connected to the rotating part, and both are perpendicular to the central axis and the third hydraulic rod.

[0036] The other end of the first adjusting rod is hinged to the midpoint of the hydraulic pipe of the first hydraulic rod, and the other end of the second adjusting rod is hinged to the midpoint of the hydraulic pipe of the second hydraulic rod.

[0037] Through holes for the two ends of the first to third hydraulic rods to pass through are respectively provided on the side wall of the conical sleeve stabilizing part.

[0038] The first hydraulic rod and the second hydraulic rod are both parallel to the central axis. One end of the first hydraulic rod and the second hydraulic rod passes through the stabilizing part and is respectively hinged to the inner wall of the first fixed housing, and the other end of the first hydraulic rod and the second hydraulic rod passes through the stabilizing part and is respectively hinged to the inner wall of the third fixed housing; One end of the second hydraulic rod passes through the stabilizing part and is hinged to the inner wall of the second fixed housing, and the other end passes through the stabilizing part and is hinged to the inner wall of the fourth fixed housing;

[0039] The passive gear is a hollow gear, sleeved on the central axis and coaxially fixedly connected to the central axis;

[0040] The first motor is fixed inside the stabilizing part, and its output shaft is coaxially fixedly connected to the driving gear; The driving gear meshes with the passive gear; The first motor is used to drive the central axis to rotate and then drive the adjusting sleeve to rotate;

[0041] The sliding seat is strip-shaped, and is provided with a strip-shaped through groove that matches the first adjusting rod; The sliding seat is sleeved on the first adjusting rod, so that the first adjusting rod can freely slide in its strip-shaped through groove along the length direction of the sliding seat, and the sliding seat can freely slide along the length direction of pressing the first adjusting rod;

[0042] The second motor is fixed inside the stabilizing part, and its output shaft is perpendicularly fixedly connected to one end of the first connecting rod; One end of the second connecting rod is hinged to the sliding seat, and the other end is hinged to the end of the first connecting rod far from the output shaft of the second motor; The second motor is used to drive the adjusting sleeve to pitch through the sliding seat.

[0043] As a further optimized solution of the active controllable stabilizing drogue for soft air refueling of the present invention, the outer walls of the first to fourth fixed housings are all streamlined to reduce air resistance.

[0044] As a further optimized solution of the active controllable stabilizing drogue for soft air refueling of the present invention, the oil pipeline includes an oil inlet pipe, an oil outlet pipe, a first branch pipe and a second branch pipe;

[0045] One end of the oil inlet pipe is hermetically fixedly connected to the oil inlet, and the other end is respectively connected to one ends of the first branch pipe and the second branch pipe;

[0046] One end of the oil outlet pipe is hermetically fixedly connected to the oil outlet, and the other end is respectively connected to the other ends of the first branch pipe and the second branch pipe;

[0047] The first branch pipe and the second branch pipe are both arc-shaped pipelines, and cooperate with each other to include the driving module.

[0048] Compared with the prior art, the present invention adopts the above technical solutions and has the following technical effects:

[0049] The present invention can generate a large control force by manipulating the eccentric motion of the adjustment sleeve, decouple the deflection in two degrees of freedom around the axis of the conical sleeve and can be carried out simultaneously, greatly improving the controllability and control force, effectively resisting the disturbing force caused by the head wave effect during the in-air refueling process, and greatly improving the successful docking rate of soft in-air refueling. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the broken surface structure of the present invention;

[0051] Figure 2 It is a schematic diagram of the structure of the first fixed housing in the present invention;

[0052] Figure 3 It is a schematic diagram of the structure of the first sliding piece in the present invention;

[0053] Figure 4 It is a schematic diagram of the structure of the adjustment sleeve in the present invention;

[0054] Figure 5 It is a schematic diagram of the structure of the first hydraulic rod in the present invention;

[0055] Figure 6 It is a schematic diagram of the structure of the control module in the present invention;

[0056] Figure 7 It is an application schematic diagram of the present invention.

[0057] In the figures, 1 - oil pipeline, 2 - conical sleeve, 3 - stabilizing parachute, 4 - adjustment sleeve, 5 - first fixed housing, 6 - first slide rail, 7 - second slide rail, 8 - first sliding piece, 9 - first slider, 10 - second slider, 11 - hydraulic pipe, 12 - first piston, 13 - second piston, 14 - first piston rod, 15 - second piston rod, 16 - central axis, 17 - first bearing, 18 - second bearing, 19 - first hydraulic rod, 20 - second hydraulic rod, 21 - third hydraulic rod, 22 - rotating part, 23 - second adjusting rod, 24 - first adjusting rod, 25 - sliding seat, 26 - first motor, 27 - second motor, 28 - driving gear, 29 - driven gear, 30 - first connecting rod, 31 - second connecting rod. EMBODIMENTS

[0058] The technical solutions of the present invention will be further described in detail below with reference to the drawings:

[0059] The present invention can be implemented in many different forms and should not be considered limited to the embodiments described herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the drawings, the components are enlarged for clarity.

[0060] It should be understood that although terms such as first, second, and third may be used herein to describe various elements, components, and / or parts, these elements, components, and / or parts are not limited by these terms. These terms are only used to distinguish the elements, components, and / or parts from each other. Thus, the first element, component, and / or part discussed below may become the second element, component, or part without departing from the teachings of the present invention.

[0061] As Figure 1 shown, the present invention discloses an actively controllable stability-increasing drogue for soft air refueling, including an oil pipeline, a drogue, a stabilizing parachute, an adjusting sleeve, and a driving module;

[0062] The drogue is hollow and includes a gradually expanding part and a stabilizing part. Among them, the front end of the gradually expanding part is closed and the rear end is open, its cross-section is circular and the area of the cross-section gradually increases from the front end to the rear end, and an oil inlet is provided at the center of the front end face; the stabilizing part is a hollow cylinder with an open front end and a closed rear end, the front end of the stabilizing part and the rear end of the gradually expanding part are coaxially and hermetically connected, and an oil outlet is provided at the center of the rear end face of the stabilizing part;

[0063] The oil pipeline is arranged inside the drogue, one end is hermetically and fixedly connected to the oil inlet, and the other end is hermetically and fixedly connected to the oil outlet;

[0064] The stabilizing parachute is coaxially and fixedly connected to the rear end of the stabilizing part of the drogue;

[0065] The adjusting sleeve includes first to fourth fixed shells and first to fourth sliding plates;

[0066] As Figure 2 shown, the first to fourth fixed shells have the same structure, are hollow with open ends and closed front and rear, and first sliding rails and second sliding rails parallel to each other are circumferentially provided on the inner wall of their inner cavities;

[0067] As Figure 3 shown, the first to fourth sliding plates have the same structure, and first to fourth sliders are provided on their inner walls;

[0068] The first sliding plate is arranged between the first and second fixed shells, the first and second sliders of the first sliding plate respectively cooperate with the first and second sliding rails of the first fixed shell, and the third and fourth sliders of the first sliding plate respectively cooperate with the first and second sliding rails of the second fixed shell, so that the first sliding plate can freely slide between the first and second fixed shells;

[0069] The second sliding piece is arranged between the second and third fixed shells. The first and second sliders of the second sliding piece respectively cooperate with the first and second sliding rails of the second fixed shell, and the third and fourth sliders of the second sliding piece respectively cooperate with the first and second sliding rails of the third fixed shell, so that the second sliding piece can slide freely between the second and third fixed shells;

[0070] The third sliding piece is arranged between the third and fourth fixed shells. The first and second sliders of the third sliding piece respectively cooperate with the first and second sliding rails of the third fixed shell, and the third and fourth sliders of the third sliding piece respectively cooperate with the first and second sliding rails of the fourth fixed shell, so that the third sliding piece can slide freely between the third and fourth fixed shells;

[0071] The fourth sliding piece is arranged between the fourth and first fixed shells. The first and second sliders of the fourth sliding piece respectively cooperate with the first and second sliding rails of the fourth fixed shell, and the third and fourth sliders of the fourth sliding piece respectively cooperate with the first and second sliding rails of the first fixed shell, so that the fourth sliding piece can slide freely between the fourth and first fixed shells;

[0072] As Figure 4 shown, the first fixed shell, the first sliding piece, the second fixed shell, the second sliding piece, the third fixed shell, the third sliding piece, the fourth fixed shell, and the fourth sliding piece are slidably connected end to end in sequence, so that the adjusting sleeve can expand and contract freely, and the inner wall of the adjusting sleeve is in the shape of a hollow cylinder with both ends open;

[0073] As Figure 6 shown, the driving module includes the first to third hydraulic rods, a central shaft, a rotating member, the first to third bearings, the first to second adjusting rods, a sliding seat, a driving gear, a driven gear, the first to second connecting rods, and the first to second motors;

[0074] As Figure 5 shown, the first to third hydraulic rods have the same structure and each includes a hydraulic pipe, a first piston, a second piston, a first piston rod, and a second piston rod. Among them, the hydraulic pipe is a hollow straight pipe with both ends open; the first piston and the second piston are both arranged inside the hydraulic pipe; one ends of the first piston rod and the second piston rod respectively extend into the hydraulic pipe from both ends and are coaxially fixedly connected to the first piston and the second piston respectively, and the first piston rod, the first piston, the second piston rod, and the second piston are symmetrically arranged; the hydraulic pipe is provided with an oil inlet hole and an oil outlet hole connected to an external hydraulic system between the first piston and the second piston, and the extension and retraction of the first piston rod and the second piston rod at both ends of the hydraulic pipe are controlled by the external hydraulic system;

[0075] As Figure 6As shown, the central axis is arranged inside the stable part of the tapered sleeve, and its two ends are coaxially and fixedly connected to the inner rings of the first bearing and the second bearing respectively. An installation hole for installing the third bearing is provided at the midpoint thereof;

[0076] The outer rings of the first bearing and the second bearing are both fixedly connected to the stable part, so that the central axis passes through the axis of the stable part;

[0077] The third bearing is arranged in the installation hole of the central axis, and its outer ring is coaxially and fixedly connected to the installation hole of the central axis, and the axis of the third bearing is perpendicular to the central axis;

[0078] The rotating part is annular and sleeved outside the central axis. First through holes and second through holes for the hydraulic pipes of the third hydraulic rod to pass through are correspondingly provided on its side wall;

[0079] The hydraulic pipes of the third hydraulic rod sequentially pass through the first through hole, the inner ring of the third bearing, and the second through hole, and are fixedly connected to the rotating part at its first through hole and second through hole, and are fixedly connected to the inner ring of the third bearing, so that the third hydraulic rod is symmetric about the third bearing and the hydraulic pipes of the third hydraulic rod and the rotating part can rotate relative to the central axis;

[0080] The first adjusting rod and the second adjusting rod are symmetrically arranged on both sides of the rotating part, and one end of each is fixedly connected to the rotating part, and both are perpendicular to the central axis and the third hydraulic rod;

[0081] The other end of the first adjusting rod is hinged to the midpoint of the hydraulic pipe of the first hydraulic rod, and the other end of the second adjusting rod is hinged to the midpoint of the hydraulic pipe of the second hydraulic rod;

[0082] Through holes for the two ends of the first to third hydraulic rods to pass through are respectively provided on the side wall of the stable part of the tapered sleeve;

[0083] The first hydraulic rod and the second hydraulic rod are both parallel to the central axis. One end of the first hydraulic rod and the second hydraulic rod passes through the stable part and is respectively hinged to the inner wall of the first fixed housing, and the other end of the first hydraulic rod and the second hydraulic rod passes through the stable part and is respectively hinged to the inner wall of the third fixed housing; One end of the second hydraulic rod passes through the stable part and is hinged to the inner wall of the second fixed housing, and the other end passes through the stable part and is hinged to the inner wall of the fourth fixed housing;

[0084] The driven gear is a hollow gear, sleeved on the central axis, and coaxially and fixedly connected to the central axis;

[0085] The first motor is fixed inside the stable part, and its output shaft is coaxially and fixedly connected to the driving gear; The driving gear meshes with the driven gear; The first motor is used to drive the central axis to rotate and then drive the adjusting sleeve to rotate;

[0086] The sliding seat is strip-shaped, and is provided with a strip-shaped through groove that cooperates with the first adjusting rod; the sliding seat is sleeved on the first adjusting rod, such that the first adjusting rod can freely slide along the length direction of the sliding seat within its strip-shaped through groove, and the sliding seat can freely slide along the length direction of the first adjusting rod;

[0087] The second motor is fixed within the stabilizing portion, and its output shaft is perpendicularly and fixedly connected to one end of the first connecting rod; one end of the second connecting rod is hinged to the sliding seat, and the other end is hinged to the end of the first connecting rod away from the output shaft of the second motor; the second motor is used to drive the adjusting sleeve to perform pitching motion through the sliding seat.

[0088] The outer walls of the first to fourth fixed shells are all streamlined to reduce air resistance.

[0089] The oil pipeline includes an oil inlet pipe, an oil outlet pipe, a first branch pipe, and a second branch pipe;

[0090] One end of the oil inlet pipe is hermetically and fixedly connected to the oil inlet, and the other end is respectively connected to one ends of the first branch pipe and the second branch pipe;

[0091] One end of the oil outlet pipe is hermetically and fixedly connected to the oil outlet, and the other end is respectively connected to the other ends of the first branch pipe and the second branch pipe;

[0092] Both the first branch pipe and the second branch pipe are arc-shaped pipelines, and cooperate to enclose the driving module within.

[0093] The design concept of the present invention is that when in-air refueling enters the docking stage, the receiving aircraft slowly approaches the drogue from the rear. As Figure 7 shown, the streamline of the receiving aircraft nose changes, resulting in the drogue floating upward and outward. By changing the deflection angle of the central axis of the adjusting sleeve, an up-and-down angle of attack difference is formed on the adjusting sleeve, and a control force is formed on the surface of the adjusting sleeve to resist the disturbing force of the head wave effect, reducing the uncertainty of the drogue movement.

[0094] Those skilled in the art of this technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as such here.

[0095] The specific embodiments described above further elaborate on the object, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An actively controllable stability-augmenting drogue for soft-air refueling, characterized in that, It includes an oil pipeline, a tapered sleeve, a stabilizing parachute, an adjusting sleeve, and a driving module; The tapered sleeve is hollow and includes a gradually expanding portion and a stabilizing portion. Among them, the front end of the gradually expanding portion is closed and the rear end is open. Its cross-section is circular and the area of the cross-section gradually increases from the front end to the rear end. An oil inlet is provided at the center of the front end face; the stabilizing portion is a hollow cylinder with an open front end and a closed rear end. The front end of the stabilizing portion and the rear end of the gradually expanding portion are coaxially and hermetically connected. An oil outlet is provided at the center of the rear end face of the stabilizing portion; The oil pipeline is arranged inside the tapered sleeve and is hermetically connected to the oil inlet at one end and hermetically connected to the oil outlet at the other end; The stabilizing parachute is coaxially connected to the rear end of the stabilizing portion of the tapered sleeve; The adjusting sleeve includes first to fourth fixed shells and first to fourth sliding plates; The first to fourth fixed shells have the same structure, are hollow with openings at both ends and are closed at the front and rear. First sliding rails and second sliding rails parallel to each other are circumferentially provided on the inner wall of its inner cavity; The first to fourth sliding plates have the same structure, and first to fourth sliders are provided on their inner walls; The first sliding plate is arranged between the first and second fixed shells. The first and second sliders of the first sliding plate respectively cooperate with the first and second sliding rails of the first fixed shell, and the third and fourth sliders of the first sliding plate respectively cooperate with the first and second sliding rails of the second fixed shell, so that the first sliding plate can freely slide between the first and second fixed shells; The second sliding plate is arranged between the second and third fixed shells. The first and second sliders of the second sliding plate respectively cooperate with the first and second sliding rails of the second fixed shell, and the third and fourth sliders of the second sliding plate respectively cooperate with the first and second sliding rails of the third fixed shell, so that the second sliding plate can freely slide between the second and third fixed shells; The third sliding plate is arranged between the third and fourth fixed shells. The first and second sliders of the third sliding plate respectively cooperate with the first and second sliding rails of the third fixed shell, and the third and fourth sliders of the third sliding plate respectively cooperate with the first and second sliding rails of the fourth fixed shell, so that the third sliding plate can freely slide between the third and fourth fixed shells; The fourth sliding plate is arranged between the fourth and first fixed shells. The first and second sliders of the fourth sliding plate respectively cooperate with the first and second sliding rails of the fourth fixed shell, and the third and fourth sliders of the fourth sliding plate respectively cooperate with the first and second sliding rails of the first fixed shell, so that the fourth sliding plate can freely slide between the fourth and first fixed shells; The first fixed shell, the first sliding plate, the second fixed shell, the second sliding plate, the third fixed shell, the third sliding plate, the fourth fixed shell, and the fourth sliding plate are sequentially and slidably connected end to end, so that the adjusting sleeve can freely expand or contract, and the inner wall of the adjusting sleeve is in the shape of a hollow cylinder with openings at both ends; The driving module includes first to third hydraulic rods, a central shaft, a rotating member, first to third bearings, first to second adjusting rods, a sliding seat, a driving gear, a driven gear, first to second connecting rods, and first to second motors; The first to third hydraulic rod structures are the same and each includes a hydraulic pipe, a first piston, a second piston, a first piston rod, and a second piston rod. Among them, the hydraulic pipe is a hollow straight pipe with open ends at both ends; the first piston and the second piston are both arranged inside the hydraulic pipe; one ends of the first piston rod and the second piston rod respectively extend into the hydraulic pipe from both ends and are coaxially fixedly connected to the first piston and the second piston respectively, and the first piston rod, the first piston, the second piston rod, and the second piston are symmetrically arranged; the hydraulic pipe is provided with an oil inlet hole and an oil outlet hole connected to the external hydraulic system between the first piston and the second piston, and the external hydraulic system controls the telescoping of the first piston rod and the second piston rod at both ends of the hydraulic pipe. The central shaft is arranged inside the stable part of the conical sleeve, and its two ends are respectively coaxially fixedly connected to the inner rings of the first bearing and the second bearing. An installation hole for installing the third bearing is provided at the midpoint thereof. The outer rings of the first bearing and the second bearing are both fixedly connected to the stable part, so that the central shaft passes through the axis of the stable part. The third bearing is arranged inside the installation hole of the central shaft, and its outer ring is coaxially fixedly connected to the installation hole of the central shaft, and the axis of the third bearing is perpendicular to the central shaft. The rotating member is annular and sleeved outside the central shaft. Corresponding first through hole and second through hole for the hydraulic pipe of the third hydraulic rod to pass through are provided on its side wall. The hydraulic pipe of the third hydraulic rod sequentially passes through the first through hole, the inner ring of the third bearing, and the second through hole, and is fixedly connected to the rotating member at its first through hole and second through hole, and is fixedly connected to the inner ring of the third bearing, so that the third hydraulic rod is symmetric about the third bearing and the hydraulic pipe of the third hydraulic rod can rotate relative to the central shaft. The first adjusting rod and the second adjusting rod are symmetrically arranged on both sides of the rotating member, and one end of each is fixedly connected to the rotating member, and both are perpendicular to the central shaft and the third hydraulic rod. The other end of the first adjusting rod is hinged to the midpoint of the hydraulic pipe of the first hydraulic rod, and the other end of the second adjusting rod is hinged to the midpoint of the hydraulic pipe of the second hydraulic rod. Through holes for the two ends of the first to third hydraulic rods to pass through are respectively provided on the side wall of the stable part of the conical sleeve. The first hydraulic rod and the second hydraulic rod are both parallel to the central shaft. One ends of the first hydraulic rod and the second hydraulic rod extend out of the stable part and are respectively hinged to the inner wall of the first fixed housing, and the other ends of the first hydraulic rod and the second hydraulic rod extend out of the stable part and are respectively hinged to the inner wall of the third fixed housing; one end of the second hydraulic rod extends out of the stable part and is hinged to the inner wall of the second fixed housing, and the other end extends out of the stable part and is hinged to the inner wall of the fourth fixed housing. The driven gear is a hollow gear, sleeved on the central shaft, and coaxially fixedly connected to the central shaft. The first motor is fixed inside the stable part, and its output shaft is coaxially fixedly connected to the driving gear; the driving gear meshes with the driven gear; the first motor is used to drive the central shaft to rotate and then drive the adjusting sleeve to rotate. The sliding seat is strip-shaped and is provided with a strip-shaped through groove that cooperates with the first adjusting rod; the sliding seat is sleeved on the first adjusting rod, so that the first adjusting rod can freely slide in the strip-shaped through groove along the length direction of the sliding seat, and the sliding seat can freely slide along the length direction of the first adjusting rod; The second motor is fixed in the stabilizing portion, and its output shaft is vertically and fixedly connected to one end of the first connecting rod; one end of the second connecting rod is hinged to the sliding seat, and the other end is hinged to the end of the first connecting rod far from the output shaft of the second motor; the second motor is used to drive the adjusting sleeve to pitch through the sliding seat.

2. The actively controllable stability-augmenting drogue for soft air refueling according to claim 1, wherein The outer walls of the first to fourth fixed shells are all streamlined to reduce air resistance.

3. The actively controllable stability-augmented drogue for soft air refueling according to claim 1, wherein, The oil pipeline includes an oil inlet pipe, an oil outlet pipe, a first branch pipe and a second branch pipe; One end of the oil inlet pipe is hermetically and fixedly connected to the oil inlet, and the other end is respectively connected to one ends of the first branch pipe and the second branch pipe; One end of the oil outlet pipe is hermetically and fixedly connected to the oil outlet, and the other end is respectively connected to the other ends of the first branch pipe and the second branch pipe; The first branch pipe and the second branch pipe are both arc-shaped pipelines, and cooperate with each other to enclose the driving module.

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