Pneumatic harpoon-grille landing assisting system of helicopter

Abstract

The invention discloses a pneumatic harpoon-grille landing assisting system of a helicopter. The pneumatic harpoon-grille landing assisting system comprises a harpoon and grilles, wherein the harpoon comprises a mounting plate; a pneumatic type telescopic mechanism is arranged at the lower part of the mounting plate; the pneumatic type telescopic mechanism comprises a cylinder body, a piston and a piston rod, wherein the cylinder body is fixed at the lower part of the mounting plate; the piston is arranged in the cylinder body in a radial direction to separate the inner part of the cylinder body into the upper part and the lower part; the piston rod is arranged in the cylinder body in an axial direction and extends out of the cylinder body; the upper part of the cylinder body and the lower part of the cylinder body communicate with an air tank through an electromagnetic valve; the electromagnetic valve is controlled by a controller; the lower end of the piston rod is connected with a pressing rotating switch and a locking removing mechanism which are matched for use. The pneumatic harpoon-grille landing assisting system disclosed by the invention has the advantages of being simple in structure, light in weight, convenient to repair and maintain, high in speed, free from pollution, low in power consumption and the like, and according to the pneumatic harpoon-grille landing assisting system, problems caused by hydraulic driving in a background art are solved.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to a helicopter pneumatic harpoon grille landing aid system. Background technique [0002] The helicopter landing process is a complex process, which is easily affected by external natural conditions, and has the following problems: [0003] (1) The influence of external natural conditions on the helicopter: the influence of the turbulent airflow and sea breeze generated after the helicopter approaches the ship surface, resulting in the instability of the helicopter's state in the air when it lands; [0004] (2) The influence of external natural conditions on the ship: the ship keeps moving under the action of waves and sea wind, etc., resulting in the relative movement of the landing area relative to the helicopter; [0005] (3) The relative displacement between the helicopter and the ship surface after landing: when there is no mooring facility or the mooring is not firm, the h...

AI Technical Summary

Problems solved by technology

[0007] At present, most of the shipboard helicopter landing aid systems are harpoon-grid landing aid systems, which are mainly composed of a harpoon fixed on the helicopter and a grid fixed on the ship. The driving method can be divided into hydraulic drive , Pneumatic drive and electric drive. The common domestic driving method is hydraulic drive. The weight of the landing aid system of this driving method is relatively heavy, and it needs to be equipped with a hydraulic auxiliary system, and the maintenance is more complicated due to factors such as oil pollution and leakage.

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