Unmanned helicopter complex-shaped composite-material integral oil tank structure

Abstract

The invention relates to an unmanned helicopter complex-shaped composite-material integral oil tank structure. The unmanned helicopter complex-shaped composite-material integral oil tank structure comprises an oil tank cover, an oil tank body, a copper network, a left covering cap, a right covering cap, an oil level measurer, an oil filler, an oil outlet, an oil supply port and an oil return port.The oil tank body is divided into a middle section, a side face, a bottom and a front skirt, a rear skirt, a left skirt and a right skirt. An oil tank is placed below a rotor wing and on the periphery of a propeller hub, the oil tank cover and the side face are upper-side skins of a middle fuselage of a helicopter, the bottom of the oil tank body is placed on a truss in the middle fuselage, and the oil tank body is in bolted connection with a lower-side skin of the middle fuselage and an internal truss through the left skirt and the right skirt, in bolted connection with skins of a front fuselage and a rear fuselage through the front skirt and the rear skirt, in blind hole flange bolted connection with the oil level measurer through the bottom, the oil outlet, the oil supply port and theoil return port, in glue-joint connection with the oil tank cover through the middle section and the side face, and in indirect connection with the left covering cap and the right covering cap throughthe side face. The oil tank cover is in glue-joint connection with the oil filler, and the copper network is connected to the oil tank in a glued mode. The unmanned helicopter complex-shaped composite-material integral oil tank structure has the advantages of being high in strength, high in rigidity, low in weight, good in rectifying effect and capable of protecting a propeller hub main shaft andthe like.

Description

technical field [0001] The invention relates to an unmanned helicopter complex-shaped composite material integral fuel tank structure, which belongs to the field of aircraft composite material structure design. Background technique [0002] As a key step in helicopter design, fuel tank design is directly related to flight safety. Existing helicopter fuel tanks mainly include metal fuel tanks, plastic fuel tanks, nylon or oil-resistant rubber soft fuel tanks, but the structural weight of metal fuel tanks is too large, and plastic fuel tanks have poor sealing performance, while nylon or oil-resistant rubber soft fuel tanks are easily affected by temperature. Requires specific fixings for installation into the tank compartment. In addition, in the past, the fuel tank was mostly a separate part placed inside the fuselage, which added unnecessary weight and reduced the utilization of the internal space of the fuselage. Therefore, designing the fuel tank as a part of the external...

AI Technical Summary

Problems solved by technology

[0003] The technical solution of the present invention is to overcome the shortcomings of traditional helicopter fuel tanks, and provide a high-strength, high-rigidity, light-weight unmanned helicopter complex-shaped composite material integral fuel tank structure

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