Patent ID: 12195173

All the parts illustrated in figures are individually assigned a reference numeral and the corresponding terms of these numbers are listed below:1. Landing gear2. Strut210. First strut211. First strut flange220. Second strut221. Second strut flange3. Opening4. Damper5. Female positioner6. Male positioner7. Hole8. Fastener9. Connecting piece10. Engine compartment(G) Body(T) Wheel(A) Fluid

The landing gear (1) comprises a body (G) provided at air and/or space vehicles; at least one wheel (T) which enables the body (G) to move on the ground; at least one strut (2) located on the body (G); at least one opening (3) forming a space in cylindrical form substantially along the strut (2); a fluid (A) which is located in the opening (3) to provide damping; at least one damper (4) located between the strut (2) and the wheel (T) to move within the opening (3), which compresses the fluid (A) to provide damping. (FIG.1,FIG.7).

The landing gear (1) according to the invention comprises at least a first strut (210) located on the strut (2) and providing the structural connection of the strut (2) with the body (G); at least a second strut (220) located on the strut (2) and removably attached to the first strut (210); an opening (3) located on the second strut (220); and a damper (4) which is movably located in the opening (3) (FIG.1,FIG.2,FIG.3,FIG.4,FIG.5,FIG.6,FIG.7).

The body (G), which is located on the landing gear (1) and used in air and/or space vehicles, is connected to the wheel (T) by means of the landing gear consisting of the strut (2), the opening (3), the fluid (A) and the damper (4). The wheel (T) enable the body (G) to land safely on the ground and the body (G) to move on the ground. During the landing of the body (G) to the ground, the impact and/or shock effect on the body (G) is damped by the damper (4) compressing the fluid (A), and the body (G) can safely land on the ground. The strut (2) is designed and produced as a single piece. Since the strut (2) has many connection interfaces thereon, the risk of production errors that may occur during the production of the strut (2) increases, which may cause the entire strut (2) to be scrapped. In addition, grinding and honing surface treatments are applied on the entire inner surface of the strut (2) so that the fluid (A) can act effectively on the opening (3) on the strut (2). This causes high cost, time and labour for the strut (2) production. During the maintenance and/or repair of the strut (2), too much time and labour is required since the entire strut (2) piece has to be removed from the body (G). In cases where re-production of the entire strut (2) piece is required, high production costs creates a problem again (FIG.1,FIG.7).

The strut (2) is produced as two separate parts, the first strut (210) and the second strut (220). No surface treatment is required on the first strut (210), since the damping realized by the damper (4) compressing the fluid (A) in the opening (3) takes place only in the second strut (220), without need to take place in the first strut (210) with complex geometry. In addition, if an incorrect interior surface treatment is applied for the second strut (220), scrapping of the first strut (220) is also avoided. Similarly, scrapping of the second strut (220) is prevented due to a manufacturing error that may occur during the production of the first strut (210), which has a complex geometry. Thus, the cost, time and labour costs for the production of the strut (2) are reduced. In addition, in cases where the strut (2) is repaired and/or maintained, only the relevant part, which requires repair and/or maintenance, is removed from the first strut (210) or the second strut (220) without removing the entire strut (2) from the body (G), and easy and fast repair and maintenance operations are performed (FIG.1,FIG.2,FIG.3,FIG.4,FIG.5,FIG.6,FIG.7).

In an embodiment of the invention, the landing gear (1) comprises a first strut (210) and a second strut (220) inserted into one another, at least partially nested within each other. The strut (2) consists of the first strut (210) and the second strut (220). Preferably, the second strut (220) partially engages with the first strut (210). Thus, for mounting the second strut (220) to the first strut (210), a first type of connection, cylindrical engaging, is provided, and the second strut (220) and the first strut (210) are engaged with each other cylindrically at their inner surfaces surrounding the opening (3) (FIG.7).

In an embodiment of the invention, the landing gear (1) comprises at least a first strut flange (211) which is located to substantially encircle the first strut (210); at least a second strut flange (221) which is located on the second strut (220) so as to be substantially opposite to the first strut flange (211); at least one female positioner (5) located as a recess and/or a protrusion on the first strut (210) and/or the first strut flange (211); and at least one male positioner (6) located on the second strut (220) or second strut flange (221) and form-fitting with the female positioner (5) such that if the female positioner (5) is a recess, the male positioner (6) becomes a protrusion, and vice versa. Thanks to the form-fitting connection of the female positioner (5) and the male positioner (6), the wheel (T), the second strut (220), the first strut (210) and the body (G) are aligned. In addition, when the body (G) lands on the ground, the lateral loads and rotational moments acting on the wheel (T) can be transferred from the second strut (220) to the first strut (210) by means of the female positioner (5) and the male positioner (6), and therefore, the use of large and/or extra parts that may cause potential weight is prevented (FIG.2,FIG.3,FIG.4,FIG.5,FIG.6).

In an embodiment of the invention, the landing gear (1) comprises a plurality of holes (7) located on the first strut flange (211) and the second strut flange (221) so as to form opposing spaces with each other; and at least one fastener (8) removably attached to the opposing holes (7). The fasteners (8) enable the second strut (220) and the first strut (210) to be removably attached to each other (FIG.3,FIG.4,FIG.5).

In an embodiment of the invention, the landing gear (1) comprises a strut (2) consisting of a first strut (210) and a second strut (220), which are removably mounted by, respectively, engaging the first strut (210) and the second strut (220) such that they are located almost partially within each other, engaging the opposing female positioner (5) and male positioner (6) to each other, and removably attaching the fasteners (8) to the opposing holes (7). Thus, the second strut (220) is removably attached to the first strut (210) easily and quickly (FIG.1,FIG.2,FIG.3,FIG.4,FIG.5,FIG.6,FIG.7).

In an embodiment of the invention, the landing gear (1) comprises a female positioner (5) with a rectangular, square, triangular, circular, semicircular, crescent or sawtooth form; and a male positioner (6) form-fitting with the female positioner (5). In the design of the landing gear (1), an optimum form for the female positioner (5) and the male positioner (6) form-fitting with the female positioner (5) is determined according to the forces and moments acting on the wheel (T). Thus, the forces and moments acting on the wheel (T) are effectively transferred via the female positioner (5) and the male positioner (6) (FIG.3,FIG.4,FIG.5).

In an embodiment of the invention, the landing gear (1) comprises a female positioner (5) and a male positioner (6), wherein the female positioner (5) and the male positioner (6) are located to be substantially equally spaced from each other, wherein the male positioner (6) is located opposite to the female positioner (5) in a form-fitting manner. The fact that the female positioner (5) and the male positioner (6) are equally spaced ensures that the maximum stress acting on the first strut (210) and the second strut (220) is reduced (FIG.2,FIG.3,FIG.4).

In an embodiment of the invention, the landing gear (1) comprises a first strut (210) and a second strut (220), which are provided with external threads on the interlocking parts thereof; and at least one connecting piece (9) in a hollow cylindrical form, which allows the first strut (210) and the second strut (220) to be removably attached since the internal thread provided on the inner surface thereof is attached to the external threads on the first strut (210) and the second strut (220). The connecting piece (9), the body (G) and the wheel (T) enable the first strut (210) and the second strut (220) to be removably connected to each other. Channeled spiral spaces are provided in the connecting piece (9), so that the first strut (210) and the second strut (220) are removably mounted with each other so as to be aligned (FIG.1,FIG.8).

In an embodiment of the invention, the landing gear (1) comprises a first strut (210) and a second strut (220) produced by using casting, turning and NC manufacturing methods (FIG.1).

In an embodiment of the invention, the landing gear (1) comprises at least one engine compartment (10) located on the second strut (220), which allows the engine to be mounted thereon, wherein the engine enables the direction of the wheel (T) to be changed. A servo motor is connected to the engine compartment (10), which enables the direction of the wheel (T) to be changed (FIG.1,FIG.5).

In an embodiment of the invention, the landing gear (1) comprises a second strut (220) which enables the damper (4) to work on the surface with reduced roughness, thanks to the application of grinding and honing surface treatments on its inner surface. Since there is no damping in the first strut (210), there is no need to apply surface treatment to the first strut (210), and grinding and honing surface treatments are applied only to the second strut (220). Thus, surface treatment costs, labour and time are reduced (FIG.1,FIG.7).

In an embodiment of the invention, the landing gear (1) comprises a damper (4) which is an oleo-pneumatic, pneumatic or hydraulic cylinder (FIG.1,FIG.7).