CN113415413A

CN113415413A - Airplane landing expansion system

Info

Publication number: CN113415413A
Application number: CN202110822418.0A
Authority: CN
Inventors: 靳军; 靳尊博
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-09-21

Abstract

The invention provides an airplane landing expansion system, which belongs to the technical field of machinery and is applied to an airplane body, wherein the airplane body is provided with an undercarriage bearing platform and comprises a landing foot unit and a floating raft unit which are additionally hung on the undercarriage bearing platform; the landing foot unit comprises mechanical legs, a reinforcing beam, two main long skids, two short skids and four breakwaters; the main long skid and the short skid are respectively and fixedly connected with the stiffening beam, and the two short skids are respectively positioned at two sides of the two main long skids; one end of the mechanical leg is fixed on the landing gear bearing platform, and the other end of the mechanical leg is fixed on the stiffening beam; the wave-proof plate is fixed at the bottom end of the mechanical leg; the floating raft unit comprises a machine body floating raft and a machine head floating raft; the design of the invention greatly improves the extension capability of taking off and landing of the airplane, provides taking off and landing capability for calm sea surfaces, lake surfaces, river surfaces and reservoirs, provides taking off and landing capability for ice surfaces in cold areas, polar ice surfaces, artificial ice surfaces in winter and the like, and provides taking off and landing capability to a certain extent for proper skiing sloping fields.

Description

Airplane landing expansion system

Technical Field

The invention relates to the technical field of machinery, in particular to an airplane landing expansion system.

Background

The landing place of the airplane can only take off and land at a corresponding airport, the length, the strength and the like of a runway have mandatory requirements, and the landing capacity of the airplane needs to be expanded, such as water surface, firm ice surface, skiing slope land and the like; the development of the takeoff and landing of the airplane becomes an urgent requirement.

Disclosure of Invention

In view of the technical defects, the invention aims to provide an airplane landing expansion system, which greatly improves the landing expansion capacity of an airplane, provides the landing capacity for a calm sea surface, a lake surface, a river surface and a reservoir, provides the landing capacity for an ice surface in a cold area, an ice surface in a polar region, an artificial ice surface in winter and the like, and provides the landing capacity to a certain extent for a proper skiing slope land.

In order to solve the technical problems, the invention adopts the following technical scheme:

an airplane landing expansion system is applied to an airplane body, and an undercarriage bearing platform is arranged on the airplane body, and is characterized by comprising a landing foot unit and a floating raft unit which are additionally hung on the undercarriage bearing platform;

the landing foot unit comprises mechanical legs, a reinforcing beam, two main long skids, two short skids and four wave-proof plates; the main long skid and the short skid are respectively and fixedly connected with the reinforcing beam, and the two short skids are respectively positioned on two sides of the two main long skids; one end of the mechanical leg is fixed on the landing gear bearing platform, and the other end of the mechanical leg is fixed on the reinforcing beam; the wave-proof plate is fixed at the bottom end of the mechanical leg; two of the breakwaters are arranged between the main long skids and the short skids, and the other two of the breakwaters are arranged between the two main long skids; a steering rudder is arranged on the rear side of the short skid;

the buoyant raft unit comprises a machine body buoyant raft and a machine head buoyant raft.

Preferably, the fuselage raft is a pentagonal raft; the nose buoyant raft is any one of a triangular buoyant raft or a small pentagonal buoyant raft.

The invention has the beneficial effects that: the design of the invention greatly improves the extension capability of taking off and landing of the airplane, provides taking off and landing capability for calm sea surfaces, lake surfaces, river surfaces and reservoirs, provides taking off and landing capability for ice surfaces in cold areas, polar ice surfaces, artificial ice surfaces in winter and the like, and provides taking off and landing capability to a certain extent for proper skiing sloping fields.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an aircraft landing extension system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a landing foot unit of an aircraft landing extension system according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a deployed state of a raft unit of an aircraft landing extension system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a contracted state of a raft unit of an aircraft landing extension system according to an embodiment of the present invention.

Description of reference numerals:

the airplane comprises an airplane body 1, a buoyant raft unit 2, a landing foot unit 3, a wave board 4, mechanical legs 5, short skids 6, reinforcing beams 7 and main long skids 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "in", "upper", "lower", "lateral", "inner", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 4, an airplane landing extension system is applied to an airplane body 1, wherein an undercarriage bearing platform is arranged on the airplane body 1, and comprises a landing foot unit 3 and a raft unit 2 which are hung on the undercarriage bearing platform;

the landing foot unit 3 comprises mechanical legs 5, a reinforcing beam 7, two main long skids 8, two short skids 6 and four breakwaters 4; the main long skid 8 and the short skid 6 are respectively fixedly connected with the reinforcing beam 7, and the two short skids 6 are respectively positioned at two sides of the two main long skids 8; one end of the mechanical leg 5 is fixed on the landing gear bearing platform, and the other end is fixed on the stiffening beam 7; the wave-proof plate 4 is fixed at the bottom end of the mechanical leg 5; two of the breakwaters 4 are arranged between the main long skids 8 and the short skids 6, and the other two breakwaters 4 are arranged between the two main long skids 8; a steering rudder is arranged at the rear side of the short skid 6; when the airplane lands, the wave-proof plate 4 can be stretched by the mechanical legs 5 to a certain extent as required, and can also be pitched by a certain angle, so that the functions of speed reduction and integral stable adjustment during landing are achieved;

the floating raft unit 2 is hung on a bearing platform in a flying state, has a contracted appearance, keeps a streamline suitable for flying and has a certain lifting force form; when landing, the airplane is expanded and inflated into a floating valve unit according to the requirement, and the whole airplane body floats after expansion; comprises a machine body floating raft and a machine head floating raft;

when the airplane is extended to take off and land, the landing foot units 3 are additionally hung, the original undercarriage and tires of the airplane are connected to the undercarriage bearing platform in a fastening mode, and the existing airplane needs three landing foot units 3 to be used during taking off and landing.

Further, the airframe buoyant raft is a pentagonal buoyant raft; the nose floating raft is any one of a triangular floating raft or a small pentagonal floating raft.

The suspension member integrally formed by the sliding landing foot unit 3 and the float valve unit bears buoyancy impact when the airplane lands on the water surface, adjusts the posture to keep stable, and meets automatic control requirements of speed reduction, buoyancy and the like.

When the ice falls, the long and short skids 6 of the landing foot unit 3 have large ground contact area, so that the pressure on the ice is reduced, and the wave-proof plate 4 also has certain assistance and foreign matter bumping effect reduction. In a proper skiing slope, the main long skid 8, the short skid 6 and the breakwater 4 share the functions of snow pushing and speed reduction, and stable guiding of the skids and the steering rudder is maintained.

During takeoff, the airplane is boosted to a proper speed, the airframe raises the float valve unit, and the wave-preventing plate 4 leaves the water surface to reduce resistance, or leaves the ice surface, or stretches out and retracts and changes the pitch angle to reduce resistance on snow. The main long skid 8 and the short skid 6 keep sliding in water or on ice or on snow,

after the flight resistance is reduced, the aircraft flies to a proper height, and the floating valve unit exhausts gas and contracts to a flight state, so that the flight resistance is reduced.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An airplane landing expansion system is applied to an airplane body, and an undercarriage bearing platform is arranged on the airplane body, and is characterized by comprising a landing foot unit and a floating raft unit which are additionally hung on the undercarriage bearing platform;

2. An aircraft landing extension system according to claim 1, wherein the fuselage raft is a pentagonal raft; the nose buoyant raft is any one of a triangular buoyant raft or a small pentagonal buoyant raft.