Grid rudder type air refueling active stability augmentation taper sleeve
By installing a steering servo and a curved grid rudder on the air refueling cone sleeve, the deflection angle is actively controlled, and the problems of floating and head wave of the hose-type air refueling method are solved, and stable refueling is achieved at different speeds and improves The accuracy and safety of air refueling.
Patent Information
- Application Number
- CN202411356627.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-10
AI Technical Summary
The existing hose-type aerial refueling method has floating phenomena, head wave oscillation and speed range limitations, resulting in limited refueling capacity of the refueling machine at high and low speeds and poor adaptability.
Adopt grid rudder-type aerial refueling active stabilization cone sleeve. By installing a steering rudder and a curved grid rudder on the cone cup, the deflection angle of the rudder plate is actively controlled to generate differential power to stabilize the cone sleeve posture and suppress floating and head wave affects and adjusts drag characteristics according to flight speed.
It realizes stable sinking volume and attitude control at different speeds and altitudes, expands the refueling envelope, improves the refueling accuracy and safety, reduces the occurrence of accidents, and is adapted to a variety of refueling equipment.
Smart Images
Figure CN119099866A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of aerial refueling, and in particular relates to a grid rudder type aerial refueling active stabilization cone sleeve. Background Art
[0002] The application of aerial refueling technology increases the range of aircraft and can significantly improve the ability of aerial equipment to continuously perform tasks. In addition, the use of aerial refueling technology on future aircraft will become more and more common. For the current hose-type aerial refueling method, due to the influence of atmospheric turbulence and the head wave generated by the front body of the receiving aircraft, coupled with the flexibility of the refueling hose, the spatial position of the refueling drogue relative to the tanker cannot be fixed, and there is a swaying phenomenon within a certain range; at the same time, more than 75% of the total resistance of the hose-type aerial refueling drogue is provided by the canopy, so the sinking amount of the drogue depends on the windward area of the canopy. In order to keep the refueling drogue of the tanker at a certain sinking amount at high and low speeds, the drogue canopy needs to be replaced back and forth between the high-speed canopy and the low-speed canopy. A refueling drogue device can only complete aerial refueling within a certain flight speed range, which greatly limits the adaptability of the equipment. It can be seen that the current soft aerial refueling method has three shortcomings: first, the drogue is affected by the instability of the incoming flow and the wake of the refueling aircraft, resulting in random swinging of the drogue; second, when the receiving aircraft approaches the refueling drogue, the refueling drogue is affected by the head wave effect of the receiving aircraft, causing the refueling drogue to vibrate; third, the traditional hose-type aerial refueling drogue cannot enable the refueling aircraft to perform aerial refueling at high and low speeds, which greatly limits the refueling envelope of the refueling aircraft. Summary of the invention
[0003] In order to solve the above problems existing in the prior art, the object of the present invention is to provide a grid rudder type aerial refueling active stabilization drogue.
[0004] The technical solution adopted by the present invention is:
[0005] A grid rudder type aerial refueling active stabilization drogue comprises a drogue cup, on which are mounted a plurality of steering servos, the output ends of which are connected to curved grid rudders; the attitude of the drogue cup is actively controlled by controlling the deflection angles of the plurality of curved grid rudders.
[0006] The present invention actively controls the curved grid rudders in various directions to deflect at different angles, thereby generating lift in various directions to form differential forces to achieve active control of the attitude of the drogue, thereby suppressing the swinging phenomenon and "head wave" effect of the hose drogue system during aerial refueling docking, improving the efficiency, accuracy and safety of drogue docking, and reducing the occurrence of accidents.
[0007] As a preferred embodiment of the present invention, one end of the cone cup is connected to an oil pipeline, the other end of the cone cup is connected to an umbrella rib, and an umbrella canopy is connected to the umbrella rib.
[0008] As a preferred solution of the present invention, a flight control system is also installed in the cone cup, and the flight control system is electrically connected to a plurality of steering servos. Through the speed, attitude and position data of the cone sleeve measured by the flight control system, the plurality of steering servos are actively controlled to drive the curved grid rudders in various directions to deflect by a certain angle.
[0009] As a preferred solution of the present invention, a battery is also installed in the cone cup, and the flight control system and several groups of steering servos are electrically connected to the battery.
[0010] As a preferred embodiment of the present invention, a compression spring is connected between the steering servo and the curved grid rudder to push the curved grid rudder to open relative to the cone cup surface. During aerial refueling, the tanker reaches a predetermined flight path, the refueling drogue is released from the refueling pod, and the curved grid rudder folded on the cone cup surface is naturally opened and locked under the action of the compression spring, and the canopy of the drogue is naturally opened under the action of air resistance, and the ribs are also opened at the same time.
[0011] As a preferred solution of the present invention, during aerial refueling, the curved grid rudders in two adjacent directions are deflected around the rotation axis at angles of equal magnitude and opposite directions. According to the type of the receiving aircraft, after processing the data information such as the altitude and speed of the drogue flight measured by the flight control system, several groups of steering servos are controlled to drive the curved grid rudders in two adjacent directions to deflect around the rotation axis at opposite angles, generating aerodynamic resistance in the incoming flow direction while the lateral forces offset each other, thereby changing the resistance characteristics of the drogue, so that the drogue maintains a certain amount of sinking at different speeds.
[0012] As a preferred embodiment of the present invention, when the receiving aircraft is a low-speed aircraft including a helicopter, the aerodynamic resistance of the grid rudder surface is increased by increasing the deflection angle of the curved grid rudder, thereby increasing the overall resistance of the cone sleeve and reducing the sinking amount of the cone sleeve to reach a predetermined position.
[0013] As a preferred embodiment of the present invention, when the receiving aircraft is a jet aircraft, the aerodynamic resistance of the grid rudder surface is reduced by reducing the deflection angle of the curved grid rudder, thereby reducing the overall resistance of the cone sleeve and increasing the sinking amount of the cone sleeve to reach a predetermined position.
[0014] As a preferred solution of the present invention, during the release, docking and recovery process of the refueling drogue, the flight control system measures the speed, attitude and position data of the drogue to actively control several groups of steering servos to drive the curved grid rudder to deflect a certain angle. The deflection angle of the curved grid rudder is actively controlled to superimpose the aerodynamic forces in various directions to form a differential force, and the attitude of the drogue is controlled by controlling the differential force generated by the different aerodynamic lifts generated by the grid rudder, so that the drogue is stable during the entire release process. During the release of the drogue, the receiving aircraft follows behind. When the drogue is released to a predetermined position, the receiving aircraft accelerates and approaches, and slowly approaches when reaching the docking area, and at the same time extends the receiving pipe to start docking with the drogue. During the docking process between the receiving pipe and the drogue, the flight control system can also control the differential force brought by the deflection of the curved grid rudder to suppress the head wave phenomenon caused by the receiving aircraft approaching the front of the refueling drogue, so that the receiving aircraft can successfully complete the docking and start aerial refueling. After completing the aerial refueling, the receiving aircraft flies away and the tanker begins to recover the drogue. During this process, the differential force caused by the deflection of the grid rudder can also be controlled to suppress its swing, and the drogue can be safely recovered into the tanker, completing the entire aerial refueling process.
[0015] As a preferred solution of the present invention, the number of the curved grid rudders is four, and the four curved grid rudders are evenly distributed on the circumferential surface of the cone cup.
[0016] The beneficial effects of the present invention are:
[0017] The grid rudder type aerial refueling active stabilization cone sleeve of the present invention can change the resistance characteristics of the cone sleeve so that the cone sleeve maintains a certain amount of sinking and a stable posture at different speeds and altitudes, thereby expanding the refueling envelope of the tanker. During the release and recovery of the cone sleeve and the docking with the oil receiving pipe, the fluttering oscillation caused by atmospheric turbulence, wake flow, wingtip vortex, "head wave" phenomenon, etc. is suppressed, so that the cone sleeve is in a stable state during the release and recovery process, and the cone sleeve release, docking, and recovery are achieved quickly, safely and stably, thereby improving the docking accuracy and efficiency of the cone sleeve and reducing the occurrence of accidents. Compared with other cone sleeve active stabilization schemes, the active stabilization effect of the present invention is better. At the same time, the present invention makes little change to the traditional aerial refueling equipment, and the cone sleeve has relatively few parts. The entire grid rudder type aerial refueling active stabilization cone sleeve is an independent and complete system that can be adapted to a variety of refueling equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the internal equipment layout of the present invention;
[0019] Figure 2 It is a schematic diagram of the structure of the present invention when it is unfolded;
[0020] Figure 3 It is a schematic diagram of the structure of the horizontal rudder surface of the present invention after being deflected 30° downward.
[0021] In the figure: 1-curved grid rudder; 2-battery; 3-oil pipeline; 4-cone cup; 5-steering servo; 6-flight control system; 7-ribs; 8-canopy. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.
[0024] like Figure 1 to Figure 3 As shown, the grid rudder type aerial refueling active stabilization drogue of the present embodiment mainly comprises 4 groups of curved grid rudders 1, 4 groups of steering servos 5, a flight control system 6, a battery 2, ribs 7, a canopy 8, etc., wherein the curved grid rudder 1 is actively controlled by the flight control system 6 to deflect by a certain angle, and the deflected curved grid rudder 1 is affected by the incoming air and will generate a certain amount of aerodynamic lift in four directions. By actively controlling the deflection angle of the curved grid rudder 1, the curved grid rudder 1 in the four directions is controlled to generate different amounts of resistance and differential force, thereby realizing active control of the drogue sleeve's sinking displacement and the drogue sleeve's posture to complete aerial refueling.
[0025] During aerial refueling, the tanker reaches the predetermined flight path, the refueling drogue is released from the refueling pod, the curved grid rudder 1 folded on the surface of the cone cup 4 is naturally opened and locked under the action of the compression spring, and the drogue canopy 8 is naturally opened under the action of air resistance, and the ribs 7 are also opened. According to the type of the receiving aircraft, the flight control system 6 measures the altitude, speed and other data information of the drogue flight, and after processing, controls the four groups of steering servos 5 to drive the curved grid rudders 1 in two adjacent directions to deflect around the rotation axis to a certain angle in the opposite direction, so that the aerodynamic resistance is generated in the incoming flow direction and the lateral forces are offset, thereby changing the resistance characteristics of the drogue, so that the drogue maintains a certain amount of sinking at different speeds.
[0026] When the receiving aircraft is a low-speed aircraft such as a helicopter, the cone sleeve needs to increase its resistance to reach the corresponding sinking position. The aerodynamic resistance of the grid rudder surface can be increased by increasing the deflection angle of the curved grid rudder 1, thereby increasing the overall resistance of the cone sleeve and reducing the sinking amount of the cone sleeve to reach the predetermined position.
[0027] When the receiving aircraft is a jet aircraft, the cone sleeve needs to reduce resistance to reach the corresponding sinking position. The aerodynamic resistance of the grid rudder surface can be reduced by reducing the deflection angle of the curved grid rudder 1, thereby reducing the overall resistance of the cone sleeve and increasing the sinking amount of the cone sleeve to reach the predetermined position.
[0028] During the release, docking and recovery process of the refueling drogue, the flight control system 6 measures the speed, attitude, position and other data of the drogue, and actively controls the four groups of steering servos 5 to drive the curved grid rudders 1 in four directions to deflect by a certain angle. The deflected curved grid rudders 1 are affected by the incoming air and will generate a certain amount of aerodynamic lift in the four directions. The deflection angle of the curved grid rudder 1 can be actively controlled, and the aerodynamic forces in the four directions are superimposed to form a differential force. The attitude of the drogue can be controlled by controlling the differential force generated by the different aerodynamic lifts generated by the curved grid rudder 1, so that the drogue is stable during the entire release process. During the release of the drogue, the receiving aircraft follows behind. When the drogue is released to the predetermined position, the receiving aircraft accelerates and approaches, and slowly approaches when it reaches the docking area, while extending the receiving pipe to begin docking with the drogue. During the docking process between the receiving pipe and the drogue, the flight control system 6 can also control the differential force brought by the deflection of the curved grid rudder 1 to suppress the "head wave" phenomenon caused by the receiving aircraft approaching the front of the refueling drogue, so that it can successfully complete the docking and start aerial refueling. After completing the aerial refueling, the receiving aircraft flies away, and the refueling aircraft begins to recover the drogue. In this process, the differential force brought by the deflection of the curved grid rudder 1 can also be controlled to suppress its swing, and the drogue can be safely recovered into the refueling aircraft to complete the entire aerial refueling process.
[0029] The present invention is applicable to aerial refueling of both manned aircraft and unmanned aircraft.
[0030] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.
Claims
1. A grid rudder type aerial refueling active stabilization drogue, characterized in that: The invention comprises a cone cup (4), on which a plurality of groups of steering servos (5) are mounted, and the output end of the steering servos (5) is connected to a curved grid rudder (1); the attitude of the cone sleeve is actively controlled by controlling the deflection angles of the plurality of groups of curved grid rudders (1).
2. The grid rudder type aerial refueling active stabilization drogue according to claim 1, characterized in that: One end of the cone cup (4) is connected to an oil delivery pipe (3), the other end of the cone cup (4) is connected to an umbrella rib (7), and an umbrella canopy (8) is connected to the umbrella rib (7).
3. The grid rudder type aerial refueling active stabilization drogue according to claim 1, characterized in that: A flight control system (6) is also installed in the cone cup (4), and the flight control system (6) is electrically connected to a plurality of groups of steering servos (5).
4. The grid rudder type aerial refueling active stabilization drogue according to claim 3, characterized in that: A battery (2) is also installed in the cone cup (4), and the flight control system (6) and a plurality of steering servos (5) are electrically connected to the battery (2).
5. The grid rudder type aerial refueling active stabilization drogue according to claim 1, characterized in that: A compression spring is connected between the steering servo (5) and the curved grid rudder (1) and is used to push the curved grid rudder to open relative to the surface of the cone cup (4).
6. The grid rudder type aerial refueling active stabilization drogue according to claim 1, characterized in that: When performing aerial refueling, the curved grid rudders (1) in two adjacent directions are deflected around the rotation axis at angles that are equal in magnitude and opposite in direction.
7. The grid rudder type aerial refueling active stabilization drogue according to claim 1, characterized in that: When the receiving aircraft is a low-speed aircraft including a helicopter, the aerodynamic resistance of the grid rudder surface is increased by increasing the deflection angle of the curved grid rudder (1).
8. The grid rudder type aerial refueling active stabilization drogue according to claim 1, characterized in that: When the receiving aircraft is a jet aircraft, the aerodynamic resistance of the grid rudder surface is reduced by reducing the deflection angle of the curved grid rudder (1).
9. The grid rudder type aerial refueling active stabilization drogue according to claim 3, characterized in that: During the release, docking and recovery process of the refueling drogue, the speed, attitude and position data of the drogue are measured by the flight control system (6) to actively control a plurality of steering servos (5) to drive the curved grid rudder (1) to deflect by a certain angle. By actively controlling the deflection angle of the curved grid rudder (1), aerodynamic forces in various directions are superimposed to form differential forces, so as to control the attitude of the drogue by controlling the differential forces generated by different aerodynamic lifts generated by the grid rudder.
10. A grid rudder type aerial refueling active stabilization drogue according to any one of claims 1 to 9, characterized in that: The number of the curved surface grid rudders (1) is four, and the four curved surface grid rudders (1) are evenly distributed on the circumferential surface of the cone cup (4).