Adjustable skid landing gear for unmanned helicopter

An unmanned helicopter, adjustable technology, applied in the direction of landing gear, sled/sled, unmanned aircraft, etc., can solve the problem of affecting the working ability and use effect of mission equipment, affecting the detection quality of surrounding electrical signals, increasing Problems such as the difficulty of unmanned helicopter landing, to achieve the effect of improving service life, reducing reaction force, and reducing interference

Active Publication Date: 2022-03-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When flying in the air, the skid landing gear generally moves with the unmanned helicopter in a relatively fixed posture under the body of the unmanned helicopter. Along with it, there are mission equipment such as photoelectric pods, radar and radio detection loads. When the equipment has high requirements on the surrounding environment of its installation location, the landing gear will seriously affect the working ability and use effect of the mission equipment. The detection quality of radio detection equipment to surrounding electrical signals
[0004] During the landing process of the unmanned helicopter, due to terrain or other external reasons, it often occurs that the unmanned helicopter and the landing point have a relative angle. The landing gear cannot be adjusted independently, causing the ship surface to have a relative angle to the unmanned helicopter in the roll and pitch directions, which greatly increases the difficulty of landing the unmanned helicopter
In addition, during the landing process of the unmanned helicopter, the conventional skid landing gear can reduce the overload on the fuselage of the unmanned helicopter by adding a buffer or deforming its own landing gear. The reaction force of the human helicopter body structure, but the landing gear itself still absorbs a considerable part of the impact kinetic energy, which affects the service life of the landing gear

Method used

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  • Adjustable skid landing gear for unmanned helicopter
  • Adjustable skid landing gear for unmanned helicopter
  • Adjustable skid landing gear for unmanned helicopter

Examples

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Effect test

Embodiment 1

[0033] An adjustable landing gear for an unmanned helicopter of the present invention such as Figure 1-Figure 3 As shown, when the unmanned helicopter is flying in the air and the landing gear needs to be changed into a mission equipment installation pylon, the overall length of the four high-damping telescopic actuating rods 1 is changed actively and equivalently through the expansion and contraction of the high-damping telescopic actuating rod 1 , so that the split arched beam 3 is rotated and deployed around the hinge point 9, so as to achieve the purpose of being installed and mounted as task equipment.

Embodiment 2

[0035] An adjustable landing gear for an unmanned helicopter of the present invention such as Figure 1-Figure 6 As shown, when the unmanned helicopter is about to land on the deck of a ship, the deck shakes horizontally and vertically due to the influence of the sea surface. The split arched beam 3 rotates around the hinge point 9, and the variable length mechanism of the variable length sled 4 compensates the length change of the variable length sled 4 caused by the relative position change of the two connecting ball joints 5, so that the landing gear The two variable-length sleds 4 change the horizontal and vertical angles to continuously adapt to the swing of the deck; when the two variable-length sleds 4 touch the deck and land, the four split bow beams 3 will bend around the hinge point 9 Rotate, synchronously drive the change of the hinge points 7 and 8, the high damping telescopic actuating rod 1 and the two-way equal stiffness tension-compression buffer 2 respectively...

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Abstract

The invention discloses an adjustable skid landing gear for an unmanned helicopter, which includes a high-damping telescopic actuating rod, a two-way equal-rigidity tension-compression buffer, a split arch beam and a variable-length skid; The tops of the two high-damping telescopic actuating rods are hinged to the body of the unmanned helicopter, and the bottoms are respectively hinged to the split arch beams on both sides; Between the beams, a two-way equal-rigidity tension-compression buffer and two high-damping telescopic actuating rods form a stable triangular mechanism. The split arch beam and the unmanned helicopter body are hinged around the longitudinal axis of the unmanned helicopter. The length skids are connected by connecting ball joints. The actuating mechanism that can make the bow beam rotate and retract along the longitudinal horizontal line of the helicopter, reduce the passive absorption of impact kinetic energy by the landing gear and freely adjust the landing angle of the landing gear improves the adaptability of the landing gear and the photoelectric pod and other mission equipment.

Description

technical field [0001] The invention relates to the technical field of helicopter landing gear, in particular to an adjustable skid landing gear for an unmanned helicopter. Background technique [0002] The general form of skid landing gear is mainly placed under the body of the unmanned helicopter, and its main function is to support the take-off, landing and ground parking of the unmanned helicopter, especially to absorb part or all of the impact kinetic energy generated during the landing process. [0003] When flying in the air, the skid landing gear generally moves with the unmanned helicopter in a relatively fixed posture under the body of the unmanned helicopter. Along with it, there are mission equipment such as photoelectric pods, radar and radio detection loads. When the equipment has high requirements on the surrounding environment of its installation location, the landing gear will seriously affect the working ability and use effect of the mission equipment. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C25/10B64C25/52B64C25/58
CPCB64C25/58B64C25/52B64C25/10B64U10/10
Inventor 陈喆招启军王博
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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