a heat protection device

Abstract

The invention discloses a heat protection device, comprising: an upper panel, a bottom panel, an upper corrugated board layer composed of a plurality of upper corrugated boards arranged in sequence, and a lower corrugated board layer composed of a plurality of lower corrugated boards arranged in sequence layer; the upper corrugated board layer is set above the lower corrugated board layer, and the upper corrugated board layer and the lower corrugated board layer are arranged alternately; the lower end of the upper corrugated board and the upper end of the lower corrugated board are connected through heat insulation and load-bearing cooperative bolt connection structure ; Heat insulation and load-bearing collaborative bolt connection structure includes: connecting bolts, upper heat insulation gasket, middle heat insulation gasket, lower heat insulation gasket, connecting nut; the gap between the upper panel and the lower end of the upper corrugated plate is filled with resistant High temperature heat insulation material; the gap between the bottom panel and the upper end of the lower corrugated plate is filled with medium temperature heat insulation material. By using the thermal protection device of the present invention, the problem of thermal short circuit of the connecting structure and thermal mismatch of the hot and cold structures in the thermal protection device can be solved.

Description

technical field [0001] The invention relates to the technical field of thermal protection of hypersonic aircraft technology, in particular to a thermal protection device. Background technique [0002] The thermal protection system is located outside the fuselage of a hypersonic vehicle, and is used to prevent the temperature of the fuselage and internal structure from exceeding the temperature limit that can be tolerated, forming a protective outer layer and bearing a certain load. The thermal protection system is a key subsystem to ensure the flight safety of a hypersonic vehicle, and it is also a key system to achieve weight reduction of the fuselage. [0003] In the prior art, the heat protection system generally adopts traditional heat-insulating tiles, heat-insulating blankets and other devices for heat protection. Conventional heat shields, although light in weight, have weak mechanical properties and poor maintainability of adhesive connections. In addition, the met...

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Problems solved by technology

[0006] In view of this, the present invention provides a thermal protection device, which can solve the problem of the thermal short circuit of the connecting structure and the thermal mismatch of the cold and hot structures in the thermal protection device

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