A cover movement mechanism

Abstract

The invention relates to a cover for an aircraft body 2. The body defines an opening 3 having and an inlet (4) in an aerodynamic surface of the aircraft. The cover has a main cover 5 and an auxiliary

Description

This invention relates to a mechanism that enables the covers in air vehicles to be opened and closed. Useful loads such as ammunition, fuel tanks, electronic warfare devices, landing gears, cameras are generally mounted in various areas on air vehicles. These areas on air vehicles should be closed with covers and opened when necessary. Refueling during flight is the process of transferring fuel from a fuel-carrying tanker air vehicle to another air vehicle in need of fuel. The methods used for refueling in air are boom systems and Hose-and-Drogue systems. The boom system involves the boom in the tanker air vehicle to be coupled by an operator to a receptacle in the other air vehicle. The hose-and-drogue system, on the other hand, requires a hose having one end provided with a basket-like object called a windbag to be released from the tanker air vehicle and the refueling aircraft to be coupled into a funnel in the windbag. In addition to being a very dangerous operation, it is necessary here to minimize the loads suffered by the covers and mechanism that should be opened on the air vehicle. Especially in new generation air vehicles, low visibility, transonic and supersonic stability and structural and aerodynamic optimization of geometry gain importance. An unstable and highly complex aerodynamic flow occurs when a door is opened even when the respective air vehicle is flying at a constant altitude. In the United Kingdom patent document US20100019089A1, which is included in the known state of the art, is described that in a main landing gear door, a second door member is seated within an aperture in a first door member and that three door members together conform to the exterior skin of an aircraft to close a landing gear bay. The door is brought into its closed position by the operation of a jack pulling the first door member inboard. This inboard movement of the first door member acts through first and second sets of connecting links to align the second and third door members into their closed positions. The first, second and third door members, and the first set of connecting links together form a four bar linkage. This four bar linkage is actuated by a second set of connecting links that are earthed to the aircraft structure at a point spaced from a pivot pin of the first door member and act as the base linkage. Such a four bar linkage system enables the actuation movement of the second set of connecting links, which is created by the jack, to be substantially simultaneously transmitted to each element in the four bar linkage to open or close the door. By virtue of a cover movement mechanism developed by this invention, it is ensured that the covers do not protrude outward from the outer surface of the air vehicle during the movement of the covers and that the mechanism that moves the covers is not exposed to the loads formed on the aerodynamic surface of the air vehicle. An object of this invention is to develop a cover movement mechanism that is more reliable, requires less maintenance and provides efficiency by being less affected by aerodynamic loads. The cover movement mechanism realized to achieve the object of the invention, defined in the first claim and in the claims dependent on this claim, comprises an opening in an air vehicle body and an inlet mouth that provides access to the opening and corresponds to a pocket on the aerodynamic surface of the air vehicle. A main cover and an auxiliary cover are used to close the inlet mouth in a conforming manner with the aerodynamic surface of the air vehicle. The position at which the inlet mouth overlaps with the aerodynamic surface of the air vehicle is called the closed position (K). An open position (A) is the position in which the main cover and the auxiliary cover are actuated by means of an actuator to be moved from the closed position (K). The main cover and the auxiliary cover can be moved between the open position (A) and the closed position (K) by means of the actuator. The auxiliary cover rotates around the point where it is supported on the main cover while moving between the open position (A) and the closed position (K). A first connection link, which is movably connected to the auxiliary cover and extends towards the opening, enables the auxiliary cover to move. An attachment element and an arm, which are movably connected to the main cover and extend towards the opening, enable the main cover to move. The arm is connected between the auxiliary cover and the attachment element in such a way that there is a distance between the attachment element and itself. A second connection link transmits the movement transferred from the attachment element to the arm and the first connection link, thus ensuring a synchronous operation of the movements of the main cover and the auxiliary cover between the open position (A) and the closed position (K). The cover movement mechanism according to the invention comprises a transmission element, one end of which is connected by a movable joint to the attachment element, and the other end of which is connected by a movable joint to the movable end of the actuator. Thus, with the triggering of the actuator, the transmission element transmits the movement to the attachment element. The attachment element is connected between the body and the main cover by a movable joint. When the transmission element pulls the attachment element, the attachment element rotates around the point where it is connected to the body and moves towards the opening, at the same time, with the rotation of the points where it is connected to the main cover and the transmission element, it slides the main cover and rotates the auxiliary cover through the second connection link and moves it from the closed position (K) to the open position (A). When the transmission element pushes the attachment element, the attachment element rotates around the point where it is connected to the body and moves towards the inlet mouth, at the same time, with the rotation of the points where it is connected to the main cover and the transmission element, it slides the main cover and rotates the auxiliary cover through the second connection link and moves it from the open position (A) to the closed position (K). During the movement of the main cover and auxiliary cover between the open position (A) and the closed position (K), the main cover and auxiliary cover do not extend out of the inlet opening by moving within the opening. In an embodiment of the invention, the transmission element comprised by the cover movement mechanism is connected to the attachment element which extend between the body and the main cover at a point closer to the main cover compared to the body, thereby enabling the force to be used more effectively when the main cover is moved. In an embodiment of the invention, the attachment element comprised by the cover movement mechanism is composed of a first attachment element and a second attachment element. By composing the attachment element of a first attachment element and a second attachment element that are conjugate and facing each other, the transmission element is connected to the first attachment element and the second connection link is connected to the second attachment element. The transmission element connected to a first connection element ensures that the pulling force is transferred from the actuator to bring the main cover to the open position (A) and that the pushing force is transferred from the actuator to bring the main cover to the closed position (K). The transferred force is transferred through the main cover to the second attachment element. The second connection link is triggered by the simultaneous movement of the second attachment element with the first attachment element. By virtue of the fact that the second connection link pushes the arm when the main cover is in the closed position (K), the auxiliary cover rotates and the main cover is slidingly brought towards the opening. By virtue of the fact that the second connection link pulls the arm when the main cover is in the open position (A), the auxiliary cover rotates and the main cover is slidingly brought towards the inlet mouth. In an embodiment of the invention, the cover movement mechanism involves the movements of the first attachment element and the second connection element and other elements connected thereto during the movement of the main cover and the auxiliary cover from the closed position (K) to the open position (A). The transmission element consists of a connection bracket and a third connection link. The other end of the connection bracket, one end of which is connected to the extensible and retractable end of the actuator, is connected to the third connection link. The connection bracket is connected to the body from its middle and rotates at its middle with the movement of the actuator and pulls or pushes the third connection link. The other end of the third connection link is connected to the first attachment element and enables the movement transferred by the connection bracket to be transferred to the first attachment element. The first attachment element transmits the movement to the main cover and provides the movement of the main cover, while the main cover moves itself and the second attachment element. The movement of the second attachment element is transmitted to the arm and to the first connection link by means of the second connection link, thereby enabling the auxiliary cover along with the main cover to move between and the open position (A) and the closed position (K). In an embodiment of the invention, the cover movement mechanism involves the movements of the first attachment element and the second connection element and other elements connected thereto during the movement of the main cover and the auxiliary cover from the open position (A) to the closed position (K). For the movement of the main cover and the auxiliary cover from the open position (A) to the closed position (K), the actuator is triggered so that it pulls the connection bracket, which is part of the transmission element, and rotates around the point where it is connected to the body. The other end of the connection element pushes the first attachment element by pushing the third connection link. When the first attachment element is pushed, the main cover moves towards the inlet mouth so that the second attachment element, synchronously with the first attachment element, rotate around the point where they are connected to the body. Meanwhile, the first attachment element rotates at the same time around the point where it is connected to the transmission element and the main cover, and by means of the points where it is connected, it pushes the main cover towards the inlet mouth and is pushed by the third connection link. By pulling the second attachment element by means of the main door, its rotation around the point where it is connected to the body and around the point where it is connected to the main door take place simultaneously. The second connection link connected to the second attachment element, in turn, enables the movement of the arm and the first connection link. In an embodiment of the invention, the connection element comprised by the cover movement mechanism enables the movement of the second connection link to be transmitted to the auxiliary cover by means of the first connection link. The connection element rotates around the body to which it is connected from its middle, under the effect of the push and pull forces applied to both of its ends. While the main cover and the auxiliary cover are brought from the closed position (K) to the open position (A), the second connection link pushes the arm and one end of the connection element, and the connection element rotates around the point where it is supported on the body and by pulling the first connection link, it enables the auxiliary cover to be rotated towards the opening around the point where it is connected to the main cover. While the main cover and the auxiliary cover are brought from the open position (A) to the closed position (K), the second connection link pulls the arm and one end of the connection element, and the connection element rotates around the point where it is supported on the body and by pushing the first connection link, it enables the auxiliary cover to be rotated around the point where it is connected to the main cover so that the auxiliary cover and the main cover close the inlet mouth together. In an embodiment of the invention, the arm comprised by the cover movement mechanism is connected to the main cover and supports the main cover from a point other than the attachment element and prevents the main cover and the auxiliary cover from protruding at the inlet mouth during their movements between the closed position (K) and the open position (A). By virtue of the arm and the attachment element, the main cover is rotated towards the opening and pulled while being brought from the closed position (K) to the open position (A), and it is pushed towards the inlet mouth while being brought from the open position (A) to the closed position (K). While the main cover and the auxiliary cover move from the closed position (K) to the open position (A), the main cover slidingly moves towards the opening by the arm that is pushed by the second connection link, and then the arm is guided towards the inlet mouth by means of the second connection link and the connection element so that in the open position (A), the points where the inlet mouth and the main cover and the auxiliary cover are mutually supported are brought in alignment While the main cover and the auxiliary cover move from the open position (A) to the closed position (K), the main cover slidingly moves towards the inlet mouth by virtue of the arm that is pulled by the second connection link and pushed by the rotation of the connection element. In an embodiment of the invention, the arm comprised by the cover movement mechanism is an U-shaped arm whose two free ends are movably connected to the main cover. There is a channel-shaped gap downwards extending within the arm from the main cover to the opening and the second connection link and the connection element are easily connected to the bottom of the arm so that they are prevented from hitting each other during the movement In an embodiment of the invention, the first attachment element and the second attachment element, which are parallel to the edge where the main cover and the auxiliary cover are connected to each other, are connected on the main cover on the same axis. Both free ends of the arm are connected to the main cover between the point where the attachment elements are connected to the main cover and the auxiliary cover and both ends are connected on the axis parallel to these axes. In an embodiment of the invention, the first attachment element and the second attachment element comprised by the cover movement mechanism are connected to the body from the same point as the fixed end of the actuator. In an embodiment of the invention, the first connection link comprised by the cover movement mechanism enables the auxiliary cover to be moved by the movement received from the second attachment element. The second connection link rotates the connection element and the connection element pushes and pulls the first connection link, enabling the auxiliary cover to move synchronously with the main cover. In an embodiment of the invention, the connection bracket and the connection element comprised by the cover movement mechanism is a boomerang-shaped connection bracket and connection element that are connected to the body from their middle. In an embodiment of the invention, the first connection link, the second connection link and the third connection link comprised by the cover movement mechanism are in the form of a straight bar. In an embodiment of the invention, the hinge comprised by the cover movement mechanism enables the main cover and the auxiliary cover to be connected to each other and enables the auxiliary cover to be moved by rotation. By virtue of the hinge, movement is provided by the piston-shaped actuator. In an embodiment of the invention, the supply pipe comprised by the cover movement mechanism is telescopically extended from a tanker air vehicle and placed into the tank inlet on the air vehicle. The position of the tank inlet is located in the opening below the edge of the main cover that is away from the auxiliary cover. The cover movement mechanism realized to achieve the object of the present invention is shown in the accompanying figures, among which; Figure 1 is a schematic representation of an air vehicle. Figure 2 is a perspective view of a cover movement mechanism. Figure 3 is a schematic representation of the main cover and the auxiliary cover when they are in the closed position (K). Figure 4 is a schematic representation of the main cover and the auxiliary cover when they are in the open position (A). The parts illustrated in figures are individually assigned a reference numeral and the corresponding terms of these numerals are listed below. 1. Cover movement mechanism 2. Body 3. Opening 4. Inlet mouth 5. Main cover 6. Auxiliary cover 7. Actuator 8. First connection link 9. Attachment element 901. First attachment element 902. Second attachment element 10. Arm 11. Second connection link 12. Transmission element 13. Connection bracket 14. Third connection link 15. Connection element 16. Hinge 17. Supply pipe 18. Tank inlet (H) Air vehicle The cover movement mechanism (1) comprises a body (2) located on an air vehicle (H), an opening (3) provided in the body (2), an inlet mouth (4) that provides access to the opening (3) and is in the form of a pocket in the aerodynamic surface of the air vehicle (H), at least one main cover (5) that is movable between the inlet mouth (4) and the opening (3), at least one auxiliary cover (6) that rotates around the point where it is supported on the main cover (5) and together with the main cover (5) enables to open and close the inlet mouth (4), at least one actuator (7) located on the body (2), enabling to move the main cover (5) and the auxiliary cover (6) so as to open and close the inlet mouth (4), a first connection link (8) connected to the auxiliary cover (6), extending from the auxiliary cover (6) to the opening 8 (3) and enabling the auxiliary cover (6) to be triggered by means of the actuator (7), an attachment element (9) connected to the main cover (5) by means of a movable joint, extending from the main cover (5) to the opening (3) and enabling the main cover (5) to be triggered by means of the actuator (7), at least one arm (10) connected to the main cover (5) between the auxiliary cover (6) and the attachment element (9), extending from the main cover (5) to the opening (3) and enabling the main cover (5) to be triggered by means of the actuator (7), the main cover (5) and the auxiliary cover (6) having a closed position (K) in which they close the inlet mouth (4), the main cover (5) and the auxiliary cover (6) having an open position (A) to which they are brought from the closed position by being moved to get close to the opening (3) by means of the actuator (7) and a second connection link (11) that is triggered by the attachment member (9) to move the arm (10), thereby enabling the main cover (5) and the auxiliary cover (6) to be moved between the open position (A) and the closed position (K). The cover movement mechanism (1) of the invention comprises at least one transmission element (12) located between the attachment element (9) and the actuator (7), connected to the attachment element (9) by means of a movable joint at a point between the main cover (5) and the body (2), one end of the attachment element (9) being connected to the main cover (5), the other end thereof being connected to the body (2) by means of a movable joint, being pulled towards the opening (3) from where it is supported on the transmission element (12) and the main cover (5) when the actuator (7) is triggered and simultaneously rotated around the supporting points where it is connected to the body (2), the transmission element (12) and the main cover (5), thereby triggering the arm (10) by means of the second connection link (11) to enable the main cover (5) to be held within the opening (3), while the main cover (5) is being moved between the closed position (K) and the open position (A) (Figure 1, Figure 2, Figure 3, Figure 4). The body (2) is the air vehicle's (H) body and the opening (3) enables to create a volume having walls within the body (2). The inlet mouth (4) in the form of a gap provided on the opening (3) is located on the aerodynamic surface of the aircraft (H) to provide access to the opening (3). By virtue of the main cover (5) and the auxiliary cover (6) located in the inlet mouth (4), access is provided to the opening (3). The main cover (5) and the auxiliary cover (6) can move between the closed position (K) and the open position (A) by virtue of the actuator (7). The main cover (5) and the auxiliary cover (6) are in the closed position (K) when they close the inlet mouth (4) almost completely to cover the gap. The main cover (5) and the auxiliary cover (6), which form a surface compatible with the aerodynamic surface of the aircraft (H) in the closed position (K), prevent the deterioration of the smooth air flow on the aerodynamic surface of the aircraft (H). The main cover (5) and the auxiliary cover (6) are triggered by the actuator (7) and moved towards the opening (3). The main cover (5) and the auxiliary cover (6) located in the opening (3) in the open position (A) provide access to refueling systems by creating a proper area within the opening (3) for refueling. While the main cover (5) is moved between the open position (A) and the closed position (K), the auxiliary cover (6) is rotated around the point where it is connected to the main cover (5) between the open position (A) and the closed position (K). By virtue of the first connection link (8), which is movably connected to the auxiliary cover (6) and extends towards the opening (3), the movement is transferred to the auxiliary cover (6). The attachment element (9) and the arm (10), which are connected to the main cover (5) with a distance between them, are elements that enable the main cover (5) to be moved and extend towards the opening (3). The arm (10) is connected to the main cover (5) between the attachment element (9) and the auxiliary cover (6). The second connection link (11), which provide the transfer of the movement between the attachment element (9), the arm (10) and the first connection link (8), enables to move the main cover (5) and the auxiliary cover (6) between the open position (A) and the closed position (K). One end of the attachment element (9) is rotatably connected to the main cover (5) and the other end to the body (2). By virtue of the transmission element (12) of which one end is connected to the actuator (7) and the other end to the attachment element (9), and of which the point of connection to the attachment element (9) is between the main cover (5) and the body (2), the movement transferred from the actuator (7) is transmitted to the attachment element (9) and from there to the main cover (5). With the actuator (7) triggering the transmission element (12), the attachment element (9) is rotated and pulled towards the opening (3) from where it is connected to the transmission element (12) and the main cover (5) and rotates around the point where it is connected to the body (2). Due to the fact that the attachment element (9) is pulled from where it is connected to the transmission element (12), the rotation of the attachment element (9) around the connection points of the transmission element (12) and the main cover (5) ensures that it is pulled towards the opening (3) also at the point where it is connected to the main cover (5) and the main cover (5) is slid into the opening (3). With the movement of the main cover (5) and the transmission element (12) towards the opening (3) and the transfer of the movement from the second connection link (11) to the arm (10), the auxiliary cover (6) rotates around the point where it is connected to the main cover (5) and is folded towards the opening (3). Thus, the main cover (5) and the auxiliary cover (6) are brought to the open position (A). While the main cover (5) is moved from the closed position (K) to the open position (A) or from the open position (A) to the closed position (K), it moves in such a way that it does not move out of the opening (3). In this way, while the main cover (5) and the auxiliary cover (6) move between the open position (A) and the closed position (K), they move so as not to form a protrusion at the inlet mouth (4) and prevent the cover movement mechanism (1) from being exposed to aerodynamic loads (Figure 1, Figure 2, Figure 3, Figure 4). In an embodiment of the invention, the transmission element (12) comprised by the cover movement mechanism (1) is connected to the attachment element (9) at a point closer to the main cover (5) compared to the body (2), thus enabling to reduce the force spent for the movement of the attachment element (9). With the triggering of the actuator (7), the connection point of the transmission element (12) connected to the attachment element (9) moved by the transmission element (12) is selected so that it is closer to the main cover (5) for actuating the main cover (5). Thus, since there will be no movement other than rotation at the point where it is connected to the body (2), it is desired to reduce the resultant force created there and to increase the resultant force created so that the main cover (5), which is desired to be moved towards the opening (3), rotates towards the opening (3) and slidingly moves thereto. In an embodiment of the invention, the cover movement mechanism (1) comprises a first attachment element (901) and a second attachment element (902) forming the attachment element (9) so that they are mutually opposed to each other, the first attachment element (901) enabling the main cover (5) to be pulled and pushed by means of the actuator (7) by being movably connected to the transmission element (12), the second connection link (11) being connected between the second attachment element (902) and the arm (10) by means of a movable joint, transferring the movement received from the main cover (5) to the arm (10), thereby sliding the main cover (5) and rotating the auxiliary cover (6) by means of the first connection link (8) such that it can be moved between the open position (A) and the closed position (K). Thus, the force applied to the first attachment element (901) by means of the transmission element (12) is transferred through the main cover (5) to the second attachment element (902) and using the force of the second attachment element (902) it can transfer the force from the second connection link (11) to the arm (10). Since the second connection link (11) and the transmission element (12) are connected to different attachment elements (9), stress is prevented from occurring only at one attachment element (9), and it is ensured that the mechanism is balanced during the movement between the open position (A) and the closed position (K) by virtue of the balanced load distribution (Figure 2). In an embodiment of the invention, the cover movement mechanism (1) comprises a connection bracket (13) forming the transmission element (12), having one end connected to the moving end of the actuator (7) by means of a movable joint and being rotatable around the point where it is connected to the body (2) by the movement of the actuator (7), a third connection link (14) forming the transmission element (12), having one end connected to the other end of the connection bracket (13) by means of a movable joint, the other end thereof being connected to the first attachment element (901) by means of a movable joint and pulling the first attachment element (901) with the rotation of the connection bracket (13), thereby enabling the main cover (5) to be pulled towards the opening (3), the second attachment element (902) enabling the auxiliary cover (6) to be pulled towards the opening (3) by means of the second connection link (11) with the main cover (5) being pulled towards the opening (3), thereby enabling the auxiliary cover (6) to rotate simultaneously with the movement of the main cover (5) and to be moved from the closed position (K) to the open position (A). Thus, while the main cover (5) and the auxiliary cover (6) move from the closed position (K) to the open position (A), they can move away from the inlet mouth (4) towards the opening (3) without forming a protrusion on the aerodynamic surface of the air vehicle (H). During the movement, the cover movement mechanism (1) is protected from the impacts of the aerodynamic loads. Due to the fact that the movement of the transmission element (12) consists of the connection bracket (13) and the third connection link (14), the degree of freedom of the movement is increased and a more compact design is provided. At the same time, it is aimed to create a more flexible structure for the position of the actuator (7) (Figure 3, Figure 4). In an embodiment of the invention, the third connection link (14) comprised by the cover movement mechanism (1) pushes the first attachment element (901) by means of the rotation of the connection bracket (13) with the triggering of the actuator (7) while the main cover (5) and the auxiliary cover (6) are in the open position (A), thereby enabling the main cover (5) to be pushed towards the inlet port (4), and the second attachment element (902) enables the auxiliary cover (6) to be pushed towards the inlet port (4) by means of the second connection link (11) as a result of pushing the main cover (5) towards the inlet port (4), thereby enabling the auxiliary cover (6) to be rotated and moved from the open position (A) to the closed position (K) simultaneously with the movement of the main cover (5). Thus, while the main cover (5) and the auxiliary cover (6) move from the open position (A) to the closed position (K), they can close the inlet mouth (4) without forming a protrusion on the aerodynamic surface of the air vehicle (H). During the movement, the cover movement mechanism (1) is protected from the impacts of the aerodynamic loads (Figure - 3, Figure -4). In an embodiment of the invention, the cover movement mechanism (1) comprises a connection element (15), one end of which is connected to the arm (10) and the second connection link (11) by means of a movable joint, the other end of which is connected to the first connection link (8) by means of a movable joint, and which rotate around the point where it is connected to the body (2) by the pushing and pulling movement transferred from the second connection link (11), thereby enabling the auxiliary cover (6) to rotate around the point where it is supported on the main cover (5) and to move between the closed position (K) and the open position (A). With the movement transferred from the second connection link (11), the connection element (15) rotates around the point where it is connected to the body (2) and transmits the pushing and pulling force to the first connection link (8). The movement of the first connection link (8), in turn, enables the auxiliary cover (6) to rotate around the point where it is connected to the main cover (5) and to move between the open position (A) and the closed position (K). In an embodiment of the invention, the arm (10) comprised by the cover movement mechanism (1) has one end which is connected to the second connection link (11) and another end which is connected to the main cover (5), enables the main cover (5) first to be pulled towards the opening (3) and then pushed away from the opening (3) while the main cover (5) moves from the closed position (K) to the open position (A) with the push of the second connection link (11), thereby keeping the main cover (5) and the auxiliary cover (6) moving between the open position (A) and the closed position (K) within the opening (3) throughout the movement and aligning them with the inlet port (4) in the open position (A). Thus, while the main cover (5) is actuated by the arm (10) and the attachment element (9), the auxiliary cover (6) is moved by the connection element (15) and the first connection link (8) by means of the second connection link (11), so that it does not form a protrusion from the inlet mouth (4) during the movement of the main cover (5) and the auxiliary cover (6) between the open position (A) and the closed position (K). Thus, since there is no surface protrusion formed by the main cover (5) and / or the auxiliary cover (6) at the inlet mouth (4), the cover movement mechanism (1) is prevented from becoming exposed to the loads created by the air flow over the inlet mouth. In an embodiment of the invention, the arm (10) comprised by the cover movement mechanism (1) is U-shaped and has ends that are respectively connected by a movable joint to an axis which is parallel to the axis where the auxiliary cover (6) is supported on the main cover (5). By virtue of the arm (10), it supports the main cover (5) together with the attachment element (9) during the movement of the main cover (5). In an embodiment of the invention, the first attachment element (901) and the second attachment element (902) comprised by the cover movement mechanism (1) are connected by means of a movable joint to an axis parallel to the axis where the auxiliary cover (6) is supported on the main cover (5), wherein the second attachment element (902) enables the second connection link (11) to be triggered as a result of being triggered when the first attachment element (901) actuates the main cover (5). Thus, the first attachment element (901) and the second attachment element (902) support the main cover (5) from two different points with the same axis and enable the movement to be transferred to the main cover (5). In an embodiment of the invention, the first attachment element (901) and the second attachment element (902) comprised by the cover movement mechanism (1) are connected by means of a movable joint to a point where the actuator (7) is connected to the body (2). The first attachment element (901) and the second attachment element (902) are connected to the main cover (5) by means of a movable connection so that they are both rotated around and linearly moved on the location where they are connected to the main cover (5) in order to slide the main cover (5) when the actuator (7) triggers the transmission element (12). In an embodiment of the invention, the first connection link (8) comprised by the cover movement mechanism (1) is connected to the auxiliary cover (6) and the connection element (15) by means of a movable joint respectively, wherein the rotation of the connection element (15) enables the auxiliary cover (6) to be pulled and rotated around the point where it is supported on the main cover (5) and moved towards the opening (3) so that the main cover (5) and the auxiliary cover (6) are moved from the closed position (K) to the open position (A), and wherein the rotation of the connection element (15) enables the auxiliary cover (6) to be pushed and rotated around the point where it is supported on the main cover (5) and moved towards the inlet mouth (4) so that the main cover (5) and the auxiliary cover (6) are moved from the open position (A) to the closed position (K). Thus, the rotation of the auxiliary cover (6) towards the opening (3) creates an area enabling the main cover (5) both to move towards the opening (3) and to move left- and rightwards within the opening (3). In an embodiment of the invention, the connection bracket (13) and the connection element (15) comprised by cover movement mechanism (1) are in the form of a boomerang, respectively. The connection element (15) and the connection bracket (13) are connected to the body (2) in the middle and enable the force at both ends thereof to be transmitted by rotation. In an embodiment of the invention, the first connection link (8), the second connection link (11) and the third connection link (14) comprised by the cover movement mechanism (1) are in the form of a rod, respectively. Thus, they enable the movement to be transmitted. In an embodiment of the invention, the cover movement mechanism (1) comprises at least one hinge (16) that enables the auxiliary cover (6) to rotate around the point where it is connected to the main cover (5) while moving between the open position (A) and the closed position (K) by means of the actuator (7), which is a piston. Due to the fact that the main cover (5) and the auxiliary cover (6) are connected to each other by means of a hinge (16), space is provided by the rotational movement of the auxiliary cover (6) for the movement of the main cover (5). The movement of the main cover (5) and the auxiliary cover (6) is provided by the piston-shaped actuator (7) producing linear movement. In an embodiment of the invention, the cover movement mechanism (1) comprises at least one supply pipe (17) in the form of a telescopic extensible tube, enabling refueling to be made in the air, at least one tank inlet (18) located on the body (2), where the supply pipe (17) is prevented from accessing while the main cover (5) and the auxiliary cover (6) are in the closed position (K), and where the supply pipe (17) provides access while the main cover (5) and the auxiliary cover (6) are in the open position (A), thereby enabling refueling to be made into the fuel tank of the air vehicle (H). The location of the tank inlet (18) is at a point accessible through the opening (3) and located on the body (2). In the open position (A), it is ensured that the edge of the main cover (5) away from the auxiliary cover (6) moves towards the opening (3) and that the edge connected to the auxiliary cover (6) is aligned with the inlet mouth (4). Thus, the nose part of the air vehicle (H) is determined as the auxiliary cover (6) side and the rear part of the air vehicle (H) is determined as the main cover (5) side.

Claims

1. A cover movement mechanism (1) comprising a body (2) located on an air vehicle (H), an opening (3) provided in the body (2), an inlet mouth (4) that provides access to the opening (3) and is in the form of a pocket in the aerodynamic surface of the air vehicle (H), at least one main cover (5) that is movable between the inlet mouth (4) and the opening (3), at least one auxiliary cover (6) that rotates around the point where it is supported on the main cover (5) and together with the main cover (5) enables to open and close the inlet mouth (4), at least one actuator (7) located on the body (2), enabling to move the main cover (5) and the auxiliary cover (6) so as to open and close the inlet mouth (4), a first connection link (8) connected to the auxiliary cover (6), extending from the auxiliary cover (6) to the opening (3) and enabling the auxiliary cover (6) to be triggered by means of the actuator (7), an attachment element (9) connected to the main cover (5) by means of a movable joint, extending from the main cover (5) to the opening (3) and enabling the main cover (5) to be triggered by means of the actuator (7), at least one arm (10) connected to the main cover (5) between the auxiliary cover (6) and the attachment element (9), extending from the main cover (5) to the opening (3) and enabling the main cover (5) to be triggered by means of the actuator (7), the main cover (5) and the auxiliary cover (6) having a closed position (K) in which they close the inlet mouth (4), the main cover (5) and the auxiliary cover (6) having an open position (A) to which they are brought from the closed position by being moved to get close to the opening (3) by means of the actuator (7) and a second connection link (11) that is triggered by the attachment member (9) to move the arm (10), thereby enabling the main cover (5) and the auxiliary cover (6) to be moved between the open position (A) and the closed position (K), characterized by at least one transmission element (12) located between the attachment element (9) and the actuator (7), connected to the attachment element (9) by means of a movable joint at a point between the main cover (5) and the body (2), one end of the attachment element (9) being connected to the main cover (5), the other end thereof being connected to the body (2) by means of a movable joint, being pulled towards the opening (3) from where it is supported on the transmission element (12) and the main cover (5) when the actuator (7) is triggered and simultaneously rotated around the supporting points where it is connected to the body (2), the transmission element (12) and the main cover (5), thereby triggering the arm (10) by means of the secondconnection link (11) to enable the main cover (5) to be held within the opening (3), while the main cover (5) is being moved between the closed position (K) and the open position (A).

2. The cover movement mechanism (1) according to claim 1, characterized in that the transmission element (12) is connected to the attachment element (9) at a point closer to the main cover (5) compared to the body (2), thus enables to reduce the force spent for the movement of the attachment element (9).

3. The cover movement mechanism (1) according to claim 1 or claim 2, characterized in that a first attachment element (901) and a second attachment element (902) form the attachment element (9) so that they are mutually opposed to each other, the first attachment element (901) enables the main cover (5) to be pulled and pushed by means of the actuator (7) by being movably connected to the transmission element (12), the second connection link (11) is connected between the second attachment element (902) and the arm (10) by means of a movable joint, transfers the movement received from the main cover (5) to the arm (10), thereby sliding the main cover (5) and rotating the auxiliary cover (6) by means of the first connection link (8) such that it can be moved between the open position (A) and the closed position (K).

4. The cover movement mechanism (1) according to claim 3, characterized by a connection bracket (13) that forms the transmission element (12), has one end connected to the moving end of the actuator (7) by means of a movable joint and is rotatable around the point where it is connected to the body (2) by the movement of the actuator (7), a third connection link (14) that forms the transmission element (12), having one end connected to the other end of the connection bracket (13) by means of a movable joint, the other end thereof being connected to the first attachment element (901) by means of a movable joint and pulling the first attachment element (901) with the rotation of the connection bracket (13), thereby enabling the main cover (5) to be pulled towards the opening (3), the second attachment element (902) enabling the auxiliary cover (6) to be pulled towards the opening (3) by means of the second connection link (11) with the main cover (5) being pulled towards the opening (3), thereby enabling the auxiliary cover (6) to rotate simultaneously with themovement of the main cover (5) and to be moved from the closed position (K) to the open position (A).

5. The cover movement mechanism (1) according to claim 4, characterized in that the third connection link (14) pushes the first attachment element (901) by means of the rotation of the connection bracket (13) with the triggering of the actuator (7) while the main cover (5) and the auxiliary cover (6) are in the open position (A), thus enables the main cover (5) to be pushed towards the inlet port (4), and the second attachment element (902) enables the auxiliary cover (6) to be pushed towards the inlet port (4) by means of the second connection link (11) as a result of pushing the main cover (5) towards the inlet port (4), thus enables the auxiliary cover (6) to be rotated and moved from the open position (A) to the closed position (K) simultaneously with the movement of the main cover (5).

6. The cover movement mechanism (1) according to any of the above claims, characterized by a connection element (15), one end of which is connected to the attachment element (9) and the second connection link (11) by means of a movable joint, the other end of which is connected to the first connection link (8) by means of a movable joint, and which rotates around the point where it is connected to the body (2) by the pushing and pulling movement transferred from the second connection link (11), thereby enabling the auxiliary cover (6) to rotate around the point where it is supported on the main cover (5) and to move between the closed position (K) and the open position (A).

7. The cover movement mechanism (1) according to any of the above claims, characterized in that the arm (10) has one end which is connected to the second connection link (11) and another end which is connected to the main cover (5), enables the main cover (5) first to be pulled towards the opening (3) and then pushed away from the opening (3) while the main cover (5) moves from the closed position (K) to the open position (A) with the push of the second connection link (11), thus keeps the main cover (5) and the auxiliary cover (6) moving between the open position (A) and the closed position (K) within the opening (3) throughout the movement and aligns them with the inlet port (4) in the open position (A).

8. The cover movement mechanism (1) according to any of the above claims, characterized in that the arm (10) is U-shaped and has ends that are respectively connected by a movable joint to an axis which is parallel to the axis where the auxiliary cover (6) is supported on the main cover (5).

9. The cover movement mechanism (1) according to claim 3 to claim 8, characterized in that the first attachment element (901) and the second attachment element (902) are respectively connected by means of a movable joint to an axis parallel to the axis where the auxiliary cover (6) is supported on the main cover (5), wherein the second attachment element (902) enables the second connection link (11) to be triggered as a result of being triggered when the first attachment element (901) actuates the main cover (5).

10. The cover movement mechanism (1) according to claim 3 to claim 9, characterized in that the first attachment element (901) and the second attachment element (902) are respectively connected by means of a movable joint to a point where the actuator (7) is connected to the body (2).

11. The cover movement mechanism (1) according to claim 6 to claim 10, characterized in that the first connection link (8) is connected to the auxiliary cover (6) and the connection element (15) by means of a movable joint respectively, wherein the rotation of the connection element (15) enables the auxiliary cover (6) to be pulled and rotated around the point where it is supported on the main cover (5) and moved towards the opening (3) so that the main cover (5) and the auxiliary cover (6) are moved from the closed position (K) to the open position (A), and wherein the rotation of the connection element (15) enables the auxiliary cover (6) to be pushed and rotated around the point where it is supported on the main cover (5) and moved towards the inlet mouth (4) so that the main cover (5) and the auxiliary cover (6) are moved from the open position (A) to the closed position (K).

12. The cover movement mechanism (1) according to claim 6 to claim 11, characterized in that the connection bracket (13) and the connection element (15) are in the form of a boomerang, respectively.

13. The cover movement mechanism (1) according to claim 4 to claim 12, characterized in that the first connection link (8), the second connection link (11) and the third connection link (14) are in the form of a rod, respectively.

14. The cover movement mechanism (1) according to any of the above claims, characterized by at least one hinge (16) enabling the auxiliary cover (6) to rotate around the point where it is connected to the main cover (5) while moving between the open position (A) and the closed position (K) by means of the actuator (7), which is a piston.

15. The cover movement mechanism (1) according to any of the above claims, characterized by at least one supply pipe (17) in the form of a telescopic extensible tube, enabling refueling to be made in the air, at least one tank inlet (18) located on the body (2), where the supply pipe (17) is prevented from accessing while the main cover (5) and the auxiliary cover (6) are in the closed position (K), and where the supply pipe (17) provides access while the main cover (5) and the auxiliary cover (6) are in the open position (A), thereby enabling refueling to be made into the fuel tank of the air vehicle (H).

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