Skin structure

Abstract

The invention provides a skin structure which comprises a first wall plate and a second wall plate, wherein the first wall plate is provided with a first surface and a second surface which are oppositely arranged; a plurality of first containing grooves are concavely formed in the first surface at intervals; second containing grooves re concavely formed in the positions, corresponding to the positions between every two adjacent first containing grooves, of the second surface; and a heat insulation layer is contained in each second containing groove; the second wall plate covers the first surface and is connected with the first surface in a sealed mode; and a plurality of sealed vacuum heat insulation cavities are formed between the second wall plate and the first containing grooves. According to the skin structure, by arranging the vacuum heat insulation cavity and the heat insulation layer, heat transfer between the second wall plate and the first wall plate is effectively reduced, the heat insulation effect is effectively guaranteed, the thickness does not need to be increased, and the skin structure can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of aircraft structures, in particular to a skin structure. Background technique [0002] Under high-speed flight conditions, the aerodynamic heating of the surface of the aircraft is serious. In order to ensure the normal operation of the airframe structure and equipment in the cabin, it is necessary to use an anti-heat insulation structure to block the conduction of heat. [0003] With the increase of aircraft speed and flight time, higher requirements are put forward for the lightweight of the anti / heat insulation structure and the space for fuel loading. However, the aerodynamic heating caused by long-term high-speed flight is more significant. For the heat insulation scheme, a thicker heat-proof layer is required, and a thicker heat-proof layer will lead to an increase in the weight of the heat-proof / heat-insulation structure and a reduction in the oil filling space; In addition to higher requirements f...

AI Technical Summary

Problems solved by technology

[0003] With the increase of aircraft speed and flight time, higher requirements are put forward for the lightweight of the anti / heat insulation structure and the space for fuel loading. However, the aerodynamic heating caused by long-term high-speed flight is more significant. For the heat insulation scheme, a thicker anti-insulation layer is required, and a thicker anti-insulation layer will lead to an increase in the weight of the anti- / insulation structure and a reduction in the oil filling space; In addition to the higher requirements for light weight of the heat insulation structure and the space for oil loading, it also puts forward the requirement of reusability, but at this stage, the commonly used anti / heat insulation structures cannot meet the requirements

Images