Aircraft engine safety cover

Abstract

The invention discloses an airplane engine safety cover, which comprises a net cover, a support part fixed on the engine shell, and an intercepting part fixed on the front side of the support part. The net cover is arranged at the rear of the air inlet of the intercepting part and is in the shape of a deep concave bowl. The intercepting part is provided with intercepting rods which can have one-way blocking effect. When the airplane is flying, the objects in front of the engine will collide with the intercepting rods, the intercepting rods will be opened in one direction, the objects will be sucked into the net cover, and the intercepting rods will prevent the objects from escaping outwards. The net cover is arranged in front of the engine and does not block the airflow entering the engine, so the engine will not stall. The shock absorber is arranged to buffer the kinetic energy of the airplane caused by the collision of the objects in front.

Description

Technical Field

[0001] This invention relates to an aircraft engine, and more particularly to an engine safety cover. Background Technology

[0002] During takeoff and landing, aircraft engines can suck in low-flying birds, kites, plastic bags, and other objects, causing engine damage or even crashes and fatalities, resulting in significant losses. Existing patented technologies have not effectively solved this problem. Some patented technologies use a front umbrella-shaped shield to simply block objects from entering the engine. Chinese Patent 202010058674.2 discloses an aircraft engine bird strike protection device with an opening and closing window. When needed, a hydraulic cylinder or motor closes the window to block birds from entering the engine. However, both technologies present several problems: objects ejected by the deflector or detached from the window panel can still be sucked into the side of the engine due to its strong suction, which can affect safety; furthermore, when the window panel is closed, it can block the airflow, especially during takeoff and landing, thus artificially reducing the aircraft's speed when wind is most needed, which could lead to a stall; and when wind is needed is difficult to determine, as people may not be able to see birds in the foreground, and closing the window will cause the two problems mentioned above, while having the window open could pose a great danger if the aircraft collides with a bird. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an aircraft engine safety cover that can suck objects in front of the engine into the net during flight and prevent them from falling out. It does not obstruct the airflow intensity in front of and to the sides of the engine, and it will always be in working condition without energy and without manual switching. It can buffer the impact energy of objects in front.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: an aircraft engine safety cover, including: a mesh cover 8, and further including a support component fixed to the aircraft engine housing and an interception component installed on the front side of the support component. The mesh cover 8 is located at the air inlet position of the interception component and is in the shape of a deep concave bowl.

[0005] The support component includes a support leg 1 fixed to the aircraft engine casing and a base 2 fixed to the front side of the support leg 1; the interception component includes a front seat 5 located in front of the base 2, a hinge support 6 located on the air inlet side of the front seat 5, an interception rod 7 hinged to the hinge support 6, a torsion spring 14 between the hinge support 6 and the interception rod 7, a connector 9 whose outer end is fixed to the air inlet side of the front seat 5 and whose inner end is fixed to the outer side of the center seat 13, a hinge support 10 located on the outer side of the center seat 13, an interception rod 12 hinged to the hinge support 10, and a torsion spring 11 between the hinge support 10 and the interception rod 12; the front edge of the mesh cover 8 is fixed to the rear part of the air inlet side of the front seat 5.

[0006] The support component also includes shock absorbers 3 evenly distributed circumferentially between the base 2 and the front seat 5, and an anti-turbulence semi-ring 4 provided at the rear of the base 2; the intercepting rod 7 has a one-way stop 15 at one end of its hinge, and the intercepting rod 12 has a one-way stop 16 at one end of its hinge.

[0007] The shock absorber 3 is a spring, air pressure, or oil pressure shock absorber.

[0008] Beneficial effects

[0009] This invention features an interceptor component and a net cover, which can suck objects in front of the engine into the net cover during flight. The interceptor component's interceptor bar can prevent the sucked-in object from escaping the net cover, completely preventing the danger of objects being sucked into the engine. The net cover allows air in front of and to the sides of the engine to be smoothly sucked into the engine without obstructing the airflow intensity, thus preventing the aircraft from stalling. It also features a shock absorber to buffer the impact energy of objects in front. It does not have a motor or hydraulic cylinder, so it can be in continuous working condition without consuming energy and does not require manual switching, making it simple and reliable. Attached Figure Description

[0010] Figure 1 AA cross-sectional view of the present invention (including aircraft engine)

[0011] Figure 2 Front view of the invention

[0012] Figure 3 Partial enlarged view of the present invention I

[0013] Figure 4 Partial enlarged view of the present invention II

[0014] Figure 5 Partial enlarged view of the present invention III

[0015] Figure 6 Partial enlarged view of the present invention IV

[0016] Figure 7 Enlarged view of a portion of the present invention V Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] exist Figure 1 , Figure 2 The aircraft engine safety cover includes: a mesh cover 8, a support component fixed to the aircraft engine casing, and an interception component installed on the front side of the support component. The mesh cover 8 is located at the air inlet of the interception component, is a deep concave bowl shape, and is a mesh cover made of metal, carbon fiber, or woven material. In this embodiment, it is made of woven metal. Figure 5 In this embodiment, the support component includes a support leg 1 fixed to the aircraft engine casing and a base 2 fixed to the front side of the support leg 1. The support leg 1 and base 2 are made of metal or carbon fiber; in this embodiment, they are made of metal. The connection method is riveting or welding; in this embodiment, riveting is used. Figures 4-7 In this embodiment, the interception component includes a front seat 5 located in front of the base 2, a hinge support 6 located on the air inlet side of the front seat 5, an interception rod 7 hinged to the hinge support 6, and a torsion spring 14 between the hinge support 6 and the interception rod 7. The outer end of the connector 9 is fixed to the air inlet side of the front seat 5, and its inner end is fixed to the outer side of the center seat 13. A hinge support 10 is located on the outer side of the center seat 13, and an interception rod 12 hinged to the hinge support 10. A torsion spring 11 is located between the hinge support 10 and the interception rod 12, providing power for the unidirectional rotation of the interception rod. Except for the torsion spring, which is made of metal, other parts can be made of metal or carbon fiber. Except for movable connections, the connection method is riveting or welding; in this embodiment, it is made of metal riveting. The front edge of the mesh cover 8 is fixed to the rear part of the air inlet side of the front seat 5 by welding or riveting; in this embodiment, it is made by welding. Figure 1 , Figure 4 In this embodiment, the support component further includes shock absorbers 3 evenly distributed circumferentially between the base 2 and the front seat 5. The top rod of the shock absorber 3 is fixed to the concave side of the front seat 5, and its cylinder is fixed to the base 2. An anti-turbulence semi-ring 4 is provided at the rear of the base 2 to prevent turbulence from occurring when air flows through it. The anti-turbulence ring 4 is made of metal or carbon fiber and is welded or riveted. In this embodiment, it is made of metal riveting. Figure 4 In the middle, the intercepting rod 7 has a one-way stop 15 at one hinge end, in Figure 3 In this embodiment, the interceptor bar 12 has a one-way stop 16 at one hinge end. The one-way stop is used to prevent the interceptor bar from rotating forward and opening; it can only rotate backward. The shock absorber 3 is a spring, pneumatic, or hydraulic shock absorber; in this embodiment, it is a spring shock absorber cylinder.

[0019] During flight, objects in front of the engine are sucked into the interceptor component of this invention and fall into the net. The object first collides with the interceptor bar, which opens backward in one direction, and the object falls into the net and is then sucked in. Even if the object tries to come out of the net when the aircraft is diving, the one-way blocking interceptor bar will prevent it from coming out until the aircraft lands, at which point it can be removed. This prevents the engine from being destroyed and ensures the safety of the people and the aircraft.

Claims

1. A safety cover for an aircraft engine, comprising: The mesh cover (8) is characterized in that it further includes a support component fixed to the outer casing of the aircraft engine and an interception component installed on the front side of the support component. The mesh cover (8) is located at the air inlet of the interception component and is in the shape of a deep concave bowl.

2. The aircraft engine safety cover according to claim 1, characterized in that: The support component includes a support leg (1) fixed to the aircraft engine housing and a base (2) fixed to the front side of the support leg 1; the interceptor component includes a front seat (5) located in front of the base (2), a hinge support (6) located on the air inlet side of the front seat (5), an interceptor rod (7) with the hinge mounted on the hinge support (6), a torsion spring (14) between the hinge support (6) and the interceptor rod (7), the outer end of the connector (9) is fixed to the air inlet side of the front seat (5) and its inner end is fixed to the outer side of the center seat (13), a hinge support (10) located on the outer side of the center seat (13), an interceptor rod (12) with the hinge mounted on the hinge support (10), a torsion spring (11) between the hinge support (10) and the interceptor rod (12), and the front edge of the mesh cover (8) is fixed to the rear part of the air inlet side of the front seat (5).

3. The aircraft engine safety cover according to claim 2, characterized in that: The support component also includes shock absorbers (3) evenly distributed circumferentially between the base (2) and the front seat (5), and an anti-turbulence semi-ring (4) provided at the rear of the base (2); the intercepting rod (7) has a one-way stop (15) at one end of its hinge, and the intercepting rod (12) has a one-way stop (16) at one end of its hinge.

4. The aircraft engine safety cover according to claim 3, characterized in that: The shock absorber (3) is a spring, air pressure, or oil pressure shock absorber.

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