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Leg and sledge combined landing gear of vertical-takeoff-and-landing aircraft

A landing device, vertical take-off and landing technology, applied in the direction of convertible landing gear, chassis, etc., can solve the problems of poor adaptability to the landing environment and cannot be stowed, achieve good terrain adaptability, improve safety, and avoid terrain The effect of poor adaptability

Pending Publication Date: 2020-02-25
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the problems of non-retractable and poor landing environment adaptability existing in the existing landing gear. It can be used for slope landing and step landing of vertical take-off and landing aircraft, and can effectively prevent the aircraft from rolling over due to the change of the center of gravity.

Method used

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  • Leg and sledge combined landing gear of vertical-takeoff-and-landing aircraft
  • Leg and sledge combined landing gear of vertical-takeoff-and-landing aircraft
  • Leg and sledge combined landing gear of vertical-takeoff-and-landing aircraft

Examples

Experimental program
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Effect test

Embodiment 1

[0031] As attached figure 1 As shown, the vertical take-off and landing aircraft leg skid combined landing device has two sets of landing device main bodies 1, and each set of landing device main bodies 1 includes a supporting device 2, a driving device 3, a skid 4 and a control system. The supporting device 2 includes a connecting seat 6 and a supporting leg 7. Taking the supporting leg 7 as an example of a vertical take-off and landing aircraft leg-sled combined landing device with two separate leg bodies, the supporting leg 7 is divided into a femoral section 8 and a tibia section. 9. The thigh section 8 and the tibia section 9 are rotatably connected, one end of the connecting seat 6 is connected to the fuselage 5 of the vertical take-off and landing aircraft, and the other end is rotatably connected to the thigh section 8 of the supporting leg 7, and the shin of the supporting leg The lower end of the joint 9 is equipped with a force sensor 13, which is connected to the sl...

Embodiment 2

[0041] The vertical take-off and landing aircraft leg skid combined landing device can realize the slope landing and step landing of the aircraft. The landing process is the same as the unfolding action of specific embodiment 1.

[0042] The difference is that during the landing process, the side skid 4 that touches the step or the height of the slope first lands. The measurement value of the force sensor 13 at the lower end of the tibia 9 is used as the input of the control system to detect the touchdown signal. The femoral motion joint 10 and tibial motion joint 11 of the device 2 rotate to adjust the length of the support leg 7 so that the height of the body 5 is reduced until the other side sliding sled touches the lower part of the step or slope, and the force sensor 13 is also generated Measurements. Continue to adjust the length of the supporting legs 7 on both sides until the measured values ​​of the force sensors 13 on both sides are basically the same and reach the set...

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Abstract

The invention discloses a leg and sledge combined landing gear of a vertical-takeoff-and-landing aircraft. The leg and sledge combined landing gear comprises two landing gear main bodies; each landinggear main body comprises a supporting device, driving devices, a sliding sledge and a control system, the supporting device comprises a connecting seat and a supporting leg, the supporting leg comprises at least two leg bodies separated from each other, the connecting seat, the supporting leg and the sliding sledge are sequentially and rotationally connected, bearings are arranged at all rotationally-connected parts, and the driving devices are arranged in all the rotationally-connected positions. The landing gear has the advantages of a leg type landing gear and the advantages of a sliding sledge type landing gear, the postures of the supporting legs and the angle of the sliding sledge are adjustable, the landing gear can be applied to slope landing and step landing of the vertical-takeoff-and-landing aircraft, the leg postures can be adjusted in real time according to the terrain after being landed so as to guarantee the horizontal posture of the fuselage of the vertical-takeoff-and-landing aircraft, change of the gravity center of the fuselage of the aircraft due to the terrain can be prevented effectively, and thus the aircraft can be effectively prevented from rolling over.

Description

Technical field [0001] The invention belongs to the design field of vertical take-off and landing aircraft, and more specifically, relates to a leg skid combined with a landing device of a vertical take-off and landing aircraft. Background technique [0002] Vertical take-off and landing technology is a technology that allows aircraft to take off and land without taxiing. Its birth is mainly due to the lack of aircraft taxiing and take-off methods. Because the vertical take-off and landing aircraft reduces or basically gets rid of the dependence on the runway, it only needs a small flat ground to achieve take-off and landing, so it does not need a special airport and runway, so it is convenient for flexible attack, transfer and camouflage in war. The attendance rate has been greatly improved, and the survival rate of the aircraft on the battlefield has also been greatly improved. Because there is no need for special airports and runways, and the costly airport construction costs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/04B64C25/12B64C25/24B64C25/66
CPCB64C25/04B64C25/12B64C25/24B64C25/66
Inventor 刘小川王计真任佳牟让科
Owner CHINA AIRPLANT STRENGTH RES INST
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