A propeller expansion and nose tilting device for a cross-medium aircraft

Abstract

A propeller telescopic and nose tilting device for a cross-medium aircraft belongs to the technical field of cross-medium aircraft. In the present invention, the rack I of the nose telescopic mechanism meshes with the gear III of the telescopic drive mechanism, and the guide rail I is fixedly connected to the shell of the nose compartment. ;The hollow shaft is set in the middle of the telescopic shaft in the telescopic mechanism of the machine head, the rack II meshes with the gear IV, and the guide rail II is fixedly connected to the shell of the machine head compartment; the base of the motor I is fixedly connected to the support plate; the base of the motor II in the telescopic drive mechanism is fixed Connected to the shell of the head compartment, the bearing with seat II and the bearing with seat III are fixedly connected with the bearing installation plate I and the bearing installation plate II respectively; Ⅳ. The base of the bearing with seat Ⅴ is fixedly connected to the shell of the fuselage, and the base of the motor Ⅲ is fixedly connected to the shell of the fuselage; the invention can realize the extension and contraction of the propeller, ensuring that the aircraft has good airtightness and small underwater running resistance. And it can realize the rapid exit of the aircraft, and greatly shorten the time for the aircraft to exit the water.

Description

technical field [0001] The invention belongs to the technical field of cross-medium aircraft, and in particular relates to a propeller telescopic and head tilting device for a cross-medium aircraft. Background technique [0002] The cross-media aircraft is a new concept sports platform designed by multi-disciplinary integration of aircraft and underwater vehicles. It is a new multi-functional integrated equipment that can fly in the air and dive underwater. The working mode of the aircraft can be divided into air flight mode, water entry mode, underwater sneaking mode and water exit mode, which can be switched among various working modes according to mission requirements. Cross-media unmanned aerial vehicles can be matched with submarines, surface ships and other equipment to perform tasks such as intelligence collection, reconnaissance and surveillance, communication relay, and electronic countermeasures across the sea and air. [0003] The design difficulties of the trans...

AI Technical Summary

Problems solved by technology

[0003] The design difficulties of the cross-media aircraft mainly focus on the three working modes of water entry mode, underwater sneaking mode and water exiting mode. The propellers in the parts will generate impact on the water surface, which will increase the resistance of underwater diving and affect the airtightness of the aircraft underwater. At present, the propeller is generally folded and deformed to reduce the impact of entering water and the resistance of underwater diving. The method does not completely solve the influence of the propeller on the surrounding water flow

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