A surface complementing mechanism

Abstract

A surface complementing mechanism (1) comprising a housing (2), at least one circuit (D) located in the housing (2) providing a connection between electronic equipment, at least one switch (3) located in the housing (2) providing control of the electric current transmitted to the circuit (D), an external surface (201) located on the housing (2), a hole (4) forming a recess on the external surface (201), substantially facing the switch (3), forming an opening in the housing (2) between it and the switch (3), the hole (4) extending into the housing (2), the housing (2) being removably fitted with the hole (4), a pin (5) for controlling the switch (3) by triggering the switch (3), a lid (6) which is form-fit with the hole (4) and provides aerodynamic continuity on the external surface (201), and which is movable between a first position (I), in which the lid (6) is brought by the user away from the external surface (201) such that a distance is maintained between the lid (6) and the external surface (201), and a second position (II), wherein the pin (5) which, when the lid (6) is in the first position (I), extends through the hole (4) towards the switch (3) and triggers the switch (3), is located on the external surface (201) of the lid (6) so as to substantially cover the hole (4), further comprising a magnet mechanism (7) oppositely located under the lid (6) and on the pin (5), which allows the lid (6) to move together with the pin (5) by magnetizing the pin (5), which allows the lid (6) to move from the first position (1) to the second position (II) by magnetizing the lid (6) with the pin (5), which allows the aerodynamic continuity of the lid (6) on the surface to occur.

Description

[0001] A SURFACE COMPLEMENTING MECHANISM

[0002] The present invention relates to mechanisms that complement the surface and create continuity in the surface to reduce the radar cross-sectional area of surfaces on aircraft.

[0003] Although the avionics equipment in aircraft are used effectively during flight, these avionics equipment are usually not used when the aircraft lands on the ground, except in cases such as testing. In addition, avionic equipment must be turned off for safety purposes when the aircraft is parked. One of the most important safety precautions for this is to disconnect the circuits of the aircraft electronic equipment from outside the aircraft with the help of circuit breakers. However, since the circuit breaker mechanisms used for this process are placed outside the aircraft, they cause a hole to form on the aircraft surface. If this hole is not closed during the flight of the aircraft, it causes the continuity on the surface to be interrupted, increasing the radar cross-sectional area of the aircraft surface and increasing the radar visibility. Many studies have been carried out to reduce the surface cross-sectional area visibility, especially in new generation aircraft. Most of these studies are aimed at reducing complex geometries and gaps on the surface.

[0004] The Chinese patent application document CN116482616A, which is included in the state of the art, discloses a manufacturing process comprising a high-altitude balloon radar reflector and composite material products. The high-altitude balloon radar reflector includes a composite material mounting plate. A plurality of circular embedded holes are formed in the composite material. The material mounting plate, the embedded holes are filled with square embedded parts and the array reflection units are mounted on the embedded parts. There are circular cavities on the surface, and just below these are square sectional covers. These covers are closed towards the holes by user triggering when necessary. This process is automated.

[0005] U.S. Patent Application No. US2004095700A1 , which is included in the state of the art, discloses a circuit breaker comprising a toothed ring fixed on a breaker housing and an actuating element having an approximately cylindrical shape that is displacably oriented within a bore of the toothed ring and partially protrudes from the breaker housing for manual push- pull movement. A sealing ring for closing the circuit breaker seals the annular space formed between the wall of the bore and the periphery of the actuating element. The present invention provides a surface complementing mechanism that effectively reduces the radar cross-sectional area of the aircraft surface.

[0006] Another object of the present invention is to provide a lighter and simpler mechanism for safely disconnecting circuits in vehicles.

[0007] Another object of the present invention is to provide a surface completion mechanism that prevents the formation of a break in the surface of the aircraft without damaging the circuitry of the electronic equipment and the aircraft.

[0008] The surface complementing mechanism defined in the first claim and the dependent claims for the purpose of the invention, comprising a circuit which provides electrical transmission to the electronic equipment contained in a housing and which is located between the equipment. A key for controlling the electricity transmitted to the circuit is located in the housing. There is an external surface on the housing and a hole in the form of a cavity on the external surface, which is almost opposite to the key. A pin is inserted through the hole into the housing to trigger the key. A cover can be placed over the hole by the user to ensure aerodynamic continuity of the external surface and to reduce the radar cross-sectional area. The user moves the cover away from the external surface to a first position (I). When the cover is in the first position (I), the pin can pass through the hole and enter the housing to trigger the switch. The cover is placed by the user on the hole in such a way that it almost covers the external surface and is moved to the second position (II). When the cover is in the second position (II), the circuit is closed by lifting the pin and electricity transmission continues.

[0009] The inventive surface complementing mechanism comprises a magnet mechanism which enables the cover to move with the pin by magnetizing the pin with the pin surface when the pin is placed on the cover when the cover is in the first position (I). The magnet mechanism is located on the pin and under the cover. In this way, the pin can move the cover from the first position (I) to the second position (II) and from the second position (II) to the first position (I). When the lid moves from the second position (II) to the first position (I), aerodynamic continuity is achieved by ensuring the continuity of the external surface.

[0010] In one embodiment of the invention, the surface complementing mechanism comprises a first magnet in the part of the lid in the first position (I) where the pin is located opposite the key and passes through the hole into the housing. A second magnet is located in the part of the lid closer to the key. The cover is between the first magnet and the second magnet. The first magnet and the second magnet form the magnet mechanism. The surfaces of the first magnet and the second magnet facing and opposite each other contain magnets of opposite poles.

[0011] In one embodiment of the invention, the surface complementing mechanism comprises a first magnet and a second magnet attracting each other, the first magnet allowing the pin pushing the lid towards the key to remain stationary in the bore when the lid is in the first position (I). When the user grabs the pin and pulls it out of the housing from inside the housing, the first magnet attracts the second magnet towards itself and the cover moves with the pin, moving from the first position (I) to the second position (II).

[0012] In one embodiment of the invention, the surface complementing mechanism comprises a spring disposed in the housing between the cover and the circuit, which stores energy when compressed. The spring stores energy by being compressed by the pin pushing the cover when the cover is moved to the first position (I). This stored energy is released when the lid is moved from the first position (I) to the second position (II), facilitating this movement.

[0013] In one embodiment of the invention, the surface complementing mechanism comprises a circuit breaker which is connected to the cover and moves with the cover to open and close the switch. The circuit breaker closes the key when the cover is moved from the second position (II) to the first position (I) by means of a pin.

[0014] In one embodiment of the invention, the surface complementing mechanism comprises a holder for holding a cover in and on the housing and for adjusting its position in the housing according to the compression of the spring. Between the cover and the holder, a second magnet is located on the surface facing face of the holder. As the cover moves between the first position (I) and the second position (II) with the triggering of the pin, the holder moves with the cover.

[0015] In one embodiment of the invention, the surface completion mechanism comprises a circuit breaker located on the face of the holder opposite the circuit. When the cover is moved from the first position (I) to the second position (II), the circuit breaker opens the key and breaks the circuit. When the cover is moved from the second position (II) to the first position (I), the circuit breaker key closes to complete the circuit.

[0016] In one embodiment of the invention, the surface completion mechanism comprises a circuit surface located in the housing where the circuit is positioned. It comprises a post between the circuit surface and the external surface for guiding linear movement of the holder from the circuit surface to the external surface. The mast moves linearly by sliding the holder through a holder cavity in the holder which allows the mast to pass through the holder.

[0017] In one embodiment of the invention, the surface complementing mechanism comprises at least one mast cavity on the mast, located along the axis along which the mast extends. The mast cavity ensures that the lid remains fixed in the first position (I).

[0018] In one embodiment of the invention, the surface complementing mechanism comprises a protrusion positioned in the retainer cavity, which faces the mast cavity when the lid is in the first position (I) and which allows to fix the lid in the first position (I). When the lid is in the first position (I) and the pin is rotated around itself, the protrusion engages the mast cavity and locks the lid in the first position (I).

[0019] In one embodiment of the invention, the surface complementing mechanism comprises a protrusion which the user removes from the post bore to move the cover from the first position (I) to the second position (II).,

[0020] In one embodiment of the invention, the surface complementing mechanism comprises a handle which enables the user to hold the pin and to move the cover between the first position (I) and the second position (II) by movement of the pin.

[0021] In one embodiment of the invention, the surface complementing mechanism comprises a fuselage contained within the aircraft.

[0022] The surface complementing mechanism for achieving the object of the present invention is shown in the accompanying figures;

[0023] Figure 1 - Sectional view of the (I) surface complementing mechanism with the cover in the first position.

[0024] Figure 2 - Cross-sectional view of the surface complementing mechanism with the lid in the second position (II).

[0025] Figure 3 - Sectional view of the cover, second magnet, holder, holder cavity and mast.

[0026] Figure 4 - Top view of the cover, second magnet, holder cavity, ledge, post and mast cavity. The parts in the figures are numbered one by one and the corresponding numbers are given below.

[0027] 1. Surface complementing mechanism

[0028] 2. Housing

[0029] 201. External surface

[0030] 202. Circuit surface

[0031] 3. Key

[0032] 4. Hole

[0033] 5. Pin

[0034] 6. Lid

[0035] 7. Magnet mechanism

[0036] 701. First magnet

[0037] 702. Second magnet

[0038] 8. Spring

[0039] 9. Circuit breaker

[0040] 10. Holder

[0041] 1001. Holder cavity

[0042] 1002. Protrusion

[0043] 11. Mast

[0044] 1101. Mast cavity

[0045] (I) First position

[0046] (II) Second position

[0047] (D) Circuit

[0048] (T) Handle

[0049] The surface complementing mechanism (1) comprises a housing (2), at least one circuit (D) located in the housing (2) providing a connection between the electronic equipment, at least one key (3) located in the housing (2) providing control of the electric current transmitted to the circuit (D), an external surface (201) located on the housing (2), a hole (4) forming a recess on the external surface (201), almost opposite the key (3), forming an opening in the housing (2) between it and the key (3), the hole (4) extending into the housing (2), the housing (2) being removably attached to the hole (4), a pin (5) for controlling the key (3) by triggering the key (3), a lid (6) which is form-fit with the hole (4) and provides aerodynamic continuity on the external surface (201), a first position (I) in which the lid (6) is moved by the user away from the external surface (201) so as to maintain a distance between the lid (6) and the external surface (201), The lid (6) comprises a lid (6) having a second position (II) wherein the pin (5), which triggers the key (3) by extending through the hole (4) towards the key (3) when the lid (6) is in the first position (I), is located on the external surface (201) of the lid (6) so as to substantially cover the hole (4).

[0050] The inventive surface complementing mechanism (1) comprises a magnet mechanism (7) located under the lid (6) and on the pin (5), which allows the lid (6) to move together with the pin (5) by magnetizing the pin (5) to the lid (6), which allows the lid (6) to move from the first position (I) to the second position (II) by magnetizing the lid (6) with the pin (5), allowing the aerodynamic continuity of the lid (6) on the surface.

[0051] The electrical connection between the electronic equipment in the housing (2) is provided by circuit (D). The current transmitted by the circuit (D) is provided by a key (3) located in the housing (2). A hole (4) is provided on the external surface (201) of the housing (2), facing the key (3) and forming a gap in the housing (2) opposite the key (3). The pin (5) passes through the hole (4), reaches the inside of the housing (2) and triggers the key (3). The pin (5) is removable and can be inserted through the hole (4). A lid (6), whose form is compatible with the hole (4), provides aerodynamic continuity by ensuring that the external surface (201) is almost completed when it is placed in the hole (4). The lid (6) is moved away from the external surface (201) by the user to a first position (I). When the lid (6) is in the first position (I), the pin (5) can be passed by the user through the hole (4) to reach the key (3). The lid (6) is moved by the user to a second position (II) by placing it on the external surface (201).

[0052] A magnet mechanism (7) is located on the pin (5) and under the lid (6), which allows the pin (5) to attract the lid (6) by magnetizing it and the lid (6) to move together with the pin (5). In this way, the pin (5) and the lid (6) can magnetize and attract each other. The user can move the lid (6) from the first position (I) to the second position (II) by pulling the pin (5). In this way, the lid (6) moves to the second position (II), ensuring aerodynamic continuity and low radar cross- sectional area on the external surface (201). In this way, the radar invisibility of the vehicle is increased (Figure-1 , Figure-2).

[0053] In one embodiment of the invention, the surface complementing mechanism (1) comprises a first magnet (701) forming the magnet mechanism (7), the first magnet (7) being located on the face of the lid (6) in the first position (I), where the pin (5) is opposite the key (3) and enters the housing (2) through the hole (4), A second magnet (702) forming the magnet mechanism (7), positioned at the end of the lid (6) opposite the key (3) so as to have a lid (6) between the first magnet (701) and the second magnet (702) having a mast opposite to the mast on the face facing the first magnet (701). The first magnet (701) is located on the pin (5), on the part of the pin (5) where it enters the housing (2) and on the face facing the key (3). The second magnet (702) is located at the bottom of the lid (6), opposite to the pin (5). In this way, the lid (6) remains between the second magnet (702) and the pin (5) and the first magnet (701) and can move together with the pin (5) when the user moves the pin (5). The first magnet (701) and the second magnet (702) form the magnet mechanism (7) which enables the pin (5) to move the lid (6). The surfaces of the first magnet (701) and the second magnet (702) facing each other are of opposite poles. In this way, the first magnet (701) and the second magnet (702) attract each other and the pin (5) triggers the lid (6).

[0054] In one embodiment of the invention, the surface complementing mechanism (1) comprises a second magnet (702) which ensures that the pin (5) remains fixed in the hole (4) by attraction of the first magnet (701) when the lid (6) is in the first position (I), A magnet mechanism (7) which enables the lid (6) to move together with the pin (5) from the first position (I) to the second position (II) by means of the second magnet (702) pulling the first magnet (701) out of the housing (2) through the hole (4) when the pin (5) is pulled out of the housing (2) by the user. When the lid (6) is in the first position (I), the pin (5) can remain stationary in the housing (2) by means of the first magnet (701) attracting the second magnet (702). When the pin (5) is pulled out of the housing (2) by the user, the first magnet (701) and the second magnet (702) attract each other and the lid (6) is pulled out together with the pin (5). In this way, the lid (6) is moved from the first position (I) to the second position (II) and the radar cross-sectional area of the external surface (201) of the vehicle is reduced.

[0055] In one embodiment of the invention, the surface complementing mechanism (1) comprises a spring (8) located in the housing (2), positioned between the lid (6) and the circuit (D), which stores energy when compressed, and a spring (8) which is compressed and stores energy by being pushed by the pin (5) when the lid (6) is in the first position (I), and which pushes the lid (6) towards the external surface (201) by means of the energy stored therein, so that it moves from the first position (I) to the second position (II). The spring (8) is located between the circuit (D) and the lid (6) and stores energy by being compressed when the lid (6) is pressed against the circuit (D) by the pin (5). When the lid (6) is moved from the first position (I) to the second position (II), the energy stored in the spring (8) is released and helps to move the lid (6) to the second position (II). In this way, the lid (6) can be moved more easily from the first position (I) to the second position (II).

[0056] In one embodiment of the invention, the surface complementing mechanism (1) comprises a circuit breaker (9) which is connected to the lid (6) and moves together with the lid (6), a circuit breaker (9) which is located almost opposite to the key (3) and opens and closes the key (3), and a circuit breaker (9) which moves together with the lid (6) and closes the key (3) when the pin (5) moves the lid (6) from the second position (II) to the first position (I). The circuit breaker

[0057] (9) is connected to the lid (6) and can be moved together with the lid (6). The circuit breaker

[0058] (9) is located directly opposite the key (3) and triggers the key (3) to open and close. In this way, the movement of the circuit breaker (9) can be triggered by the pin (5) by moving the lid (6) between the first position (I) and the second position (II). In this way, when the lid (6) is in the first position (I), the circuit breaker (9) triggers the key (3) and enables it to open, thus safely cutting off the electricity passing through the circuit (D).

[0059] In one embodiment of the invention, the surface complementing mechanism (1) is a holder

[0060] (10) located in the housing (2), on which the lid (6) is located, positioned between the lid (6) and the spring (8), which enables the position of the lid (6) in the housing (2) to be adjusted by compressing the spring (8), The second magnet (702) located between the lid (6) and the holder (10), on the side of the holder (10) facing the external surface (201), comprises the holder (10) which moves with the lid (6) when the pin (5) moves the lid (6) from the first position

[0061] (I) to the second position (II) or from the second position (II) to the first position (I). The holder

[0062] (10) is located between the spring (8) and the lid (6) and allows the height of the lid (6) to be adjusted. The first magnet (701) is located above the holder (10) and below the lid (6). The holder (10), the second magnet (702), the lid (6) together move between the first position (I) and the second position (II) by means of the movement of the pin (5).

[0063] In one embodiment of the invention, the surface complementing mechanism (1) comprises a circuit breaker (9) located on the part of the holder (10) facing the key (3), which, when the lid (6) is moved from the first position (I) to the second position (II), opens the key (3) and stops the electricity flowing in the circuit (D), and when the lid (6) is moved from the second position

[0064] (II) to the first position (I), the key (3) ceases to be triggered, allowing electricity to flow in the circuit (D). The circuit breaker (9) is located on the holder (10), on the side of the holder (10) facing the key (3). In this way, when the lid (6) is moved from the first position (I) to the second position (II), the holder (10) moving together with the lid (6) moves the circuit breaker (9) and the electricity flowing through the circuit (D) is safely cut off.

[0065] In one embodiment of the invention, the surface complementing mechanism (1) comprises a circuit surface (202) in the housing (2) on which the circuit (D) is positioned, extending from the circuit surface (202) to the external surface (201), guiding the movement of the holder (10) between the circuit (D) and the external surface (201), The pin (5) comprises at least one mast

[0066] (11) for height adjustment of the holder (10) in the housing (2), a holder cavity (1001) on the holder (10) in the part where the holder (10) extends through the mast (11), which allows the holder (10) to slide linearly over the mast (11). The circuit surface (202) is located on the surface of the circuit (D). The mast (11) is located between the circuit surface (202) and the external surface (201), and serves to guide the linear movement of the holder (10) in the housing (2). The holder (10) and the lid (6) can also be adjusted in height by sliding over the mast (11) by moving the pin (5). The mast (11) passes through the holder cavity (1001) and guides the linear movement of the holder (10) by sliding over it. In this way, the movement of the lid (6) between the first position (I) and the second position (II) is provided (Figure-3).

[0067] In one embodiment of the invention, the surface complementing mechanism (1) comprises at least one mast cavity (1102) located on the mast (11) along the direction along which the mast (11) extends, which enables the lid (6) to adjust and maintain the linear position in the first position (I). (Figure-4)

[0068] In one embodiment of the invention, the surface complementing mechanism (1) comprises a holder (10) in the holder cavity (1001), which engages with the mast cavity (1101) when the lid (6) is in the first position (I), and a protrusion (1002) for securing the lid (6) in the first position (I), The lid (6) comprises a protrusion (1002) which, when the lid (6) is in the first position (I), is inserted into the mast cavity (1101) by rotating the pin (5) about the direction in which it extends by the user, thereby ensuring that the lid (6) remains fixed in the first position (I). The protrusion (1002) is located in the mast cavity (1101) so that the position of the lid (6) remains constant when the pin (5) moves the lid (6), thereby locking the lid (6) at the desired height level.

[0069] In one embodiment of the invention, the surface complementing mechanism (1) comprises a protrusion (1002) which is removed from the mast cavity (1101) by the user to move the lid (6) from the fixed position when moving it from the first position (I) to the second position (II). In this way, the protrusion (1002) can be removed from the post hole (1102) and the lid (6) can be moved again.

[0070] In one embodiment of the invention, the surface complementing mechanism (1) comprises a handle (T) on the pin (5) which enables a user to grasp the pin (5) and pull it outwardly from the external surface (201) to move it from the first position (I) to the second position (II) or from the second position (II) to the first position (I). In this way, the pin (5) can be held and moved by the user with the handle (T). In one embodiment of the invention, the surface complementing mechanism (1) comprises a housing (2) in an aircraft. In this way, the radar cross-sectional area on the surface of the aircraft is reduced.

Claims

CLAIMS1- A surface complementing mechanism (1) comprising a housing (2), at least one circuit (D) in the housing (2) that provides a connection between electronic equipment, at least one key (3) located in the housing (2), which provides control of the electric current transmitted to the circuit (D), an external surface (201) located on the housing (2), a hole (4) forming a recess on the external surface (201), almost opposite the key (3), forming an opening in the housing (2) between itself and the key (3), a pin (5) extending through the hole (4) into the housing (2), removably attached to the housing (2) through the hole (4), which triggers the key (3) and enables control of the key (3), a lid (6) which is form-fit with the hole (4) and which ensures the formation of aerodynamic continuity on the external surface (201), a first position (I) in which the lid (6) is moved by the user away from the external surface (201) so as to maintain a distance from the external surface (201), the pin (5) which, when the lid (6) is in the first position (I), extends through the hole (4) into the key (3) and triggers the key (3), the lid (6) having a second position (II) in which the lid (6) is located on the external surface (201) so as to substantially cover the hole (4), characterized by a magnet mechanism (7) oppositely located under the lid (6) and on the pin (5), which allows the lid (6) to move together with the pin (5) by magnetizing the pin (5), which allows the lid (6) to move from the first position (I) to the second position (II) by magnetizing the lid (6) with the pin (5), which allows the aerodynamic continuity of the lid (6) on the surface to occur.2- A surface complementing mechanism (1) according to claim 1 , characterized by a first magnet (701) which, when the lid (6) is in the first position (I), forms the magnet mechanism (7) on the side of the pin (5) opposite the key (3) and through the hole (4) into the housing (2), a second magnet (702) forming the magnet mechanism (7), which is positioned at the end of the lid (6) opposite the key (3) so as to have a lid (6) between it and the first magnet (701), the first magnet (701) and the second magnet (702) have the opposite pole from the pole on the face facing each other.3- A surface complementing mechanism (1) according to claim 1 and claim 2, characterized by the second magnet (702), which keeps the pin (5) fixed in the hole (4) by attracting the first magnet (701) when the lid (6) is in the first position (I), the magnet mechanism (7) which enables the lid (6) to move together with the pin (5) from the first position (I) to the second position (II) by means of the second magnet (702) pulling the first magnet (701) out of the housing (2) through the hole (4) by pulling the pin (5) outwards from the housing (2) by the user.4- A surface complementing mechanism (1) according to any one of the preceding claims, characterized by a spring (8) located in the housing (2), positioned between the lid (6) and the circuit (D), which stores energy when compressed, the spring (8) being compressed and storing energy by being pushed by the pin (5) when the lid (6) is in the first position (I), and pushes the lid (6) towards the external surface (201) by means of the stored energy, so that it moves from the first position (I) to the second position (II).5- A surface complementing mechanism (1) according to any one of the preceding claims, characterized by a circuit breaker (9) which is connected to the lid (6), moves together with the lid (6), is located almost opposite to the key (3) and enables the key (3) to be opened and closed, the circuit breaker (9) closes the key (3) by moving with the lid (6) as a result of the pin (5) moving the lid (6) from the second position (II) to the first position (I).6- A surface complementing mechanism (1) according to claim 4 and claim 5, characterized by a holder (10) located in the housing (2), on which the lid (6) is located, positioned between the lid (6) and the spring (8), which enables the position of the lid (6) in the housing (2) to be adjusted by compressing the spring (8), the second magnet (702) located between the lid (6) and the holder (10), on the side of the holder (10) facing the outer surface (201), the holder (10), which moves with the lid (6) when the pin (5) moves the lid (6) from the first position (I) to the second position (II) or from the second position (II) to the first position (I).7- A surface complementing mechanism (1) according to claim 5 and claim 6, characterized by a circuit breaker (9) located on the part of the holder (10) opposite the key (3), which, when the lid (6) is moved from the first position (I) to the second position (II), opens the key (3) and stops the electricity flowing in the circuit (D), and when the lid (6) is moved from the second position (II) to the first position (I), stops triggering the key (3) and allows electricity to flow in the circuit (D).8- A surface complementing mechanism (1) according to claim 6 and claim 7, characterized by a circuit surface (202) in the housing (2) on which the circuit (D) is positioned, at least one mast (11) extending from the circuit surface (202) to the external surface (201), guiding the movement of the holder (10) between the circuit (D) and the external surface (201), allowing the pin (5) to adjust the height of the holder(10) within the housing (2), a holder cavity (1001) on the holder (10), in the part where the mast (11) extends through it, allowing the holder (10) to slide over the mast (11) and move linearly.9- A surface complementing mechanism (1) according to claim 8, characterised by at least one mast cavity (1102) located on the mast (11) along the direction along which the mast (11) extends, which enables the lid (6) to be adjusted and maintained in a linear position in the first position (I).10- A surface complementing mechanism (1) according to claim 9, characterized by a protrusion (1002) in the holder cavity (1001) for securing the holder (10) and the lid (6) in the first position (I) positioned opposite the mast cavity (1101) in the first position (I), a protrusion (1002) which, when the lid (6) is in the first position (I), is inserted into the mast cavity (1101) by rotating the pin (5) about the direction in which it extends by the user, thereby ensuring that the lid (6) remains fixed in its first position (I).11- A surface complementing mechanism (1) according to claim 10, characterised by the protrusion (1002) being removed from the mast cavity (1101) by a user to move the lid (6) out of the fixed position when moving it from the first position (I) to the second position (II).12- A surface complementing mechanism (1) according to any one of the preceding claims, characterised by a handle (T) provided on the pin (5), which enables a user to grasp the pin (5) and pull it outwards from the external surface (201) to move it from the first position (I) to the second position (II) or from the second position (II) to the first position (I).13- A surface complementing mechanism (1) according to any one of the preceding claims, characterised by the body (2) being located on an aircraft.

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