Porous foam-based flexible skin for high-speed aircraft over-limit thermal protection and its method
A technology of high-speed aircraft and porous foam, which is applied in thermal protection devices of aerospace vehicles, chemical instruments and methods, aerospace safety/emergency devices, etc., can solve problems such as being able to be used in low temperature environments, and achieve improved uniformity and stability, Improves the heat protection effect and the effect of stretching and stretching
Active Publication Date: 2020-12-18
XIDIAN UNIV +1
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Problems solved by technology
[0005] In order to solve the above-mentioned technical problems, the present invention provides a flexible skin for over-limit thermal protection of high-speed aircraft based on porous foam. ), so that the existing high-speed aircraft can achieve deformable flight; at the same time, the sweating structure has a large flow resistance, which reduces the influence of factors such as gravity, skin movement and reversal, and the liquid coolant seeps out evenly and stably, improving the thermal protection effect and solving the problem The existing flexible skin can only be used in low temperature environment because it cannot withstand ultra high temperature
Method used
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] Such as Figure 1-2 As shown, the flexible skin for high-speed aircraft over-limit heat protection based on porous foam includes surface sweating heat protection microstructure layer 1, middle flexible porous foam layer 2, bottom flexible liquid-introduced substrate layer 3; surface sweating heat protection microstructure layer 1 The through-shaped coolant overflow holes 11 are evenly arranged in the layer; the main function is to ensure the uniformity ...
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Abstract
The invention discloses a high-speed aircraft over-limit thermal protection flexible skin based on porous foam and a preparation method of the skin. The flexible skin sequentially comprises a surfacelayer sweating thermal protection micro-structure layer, a middle layer flexible porous foam layer and a bottom layer flexible liquid inlet substrate layer from outside to inside; the surface layer sweating thermal protection micro-structure layer communicates with the bottom layer flexible liquid inlet substrate layer through the middle layer flexible porous foam layer. The flexible skin has a fully flexible structure, can be used for a high-speed aircraft to realize thermal protection (over-limit thermal protection) exceeding the temperature resistance limit of a flexible material, enables an existing high-speed aircraft to realize deformable flight, is relatively large in flow resistance, and can overcome the problem of non-uniformity of sweating caused by gravity, movement and inversion.
Description
technical field [0001] The invention belongs to the field of heat protection and flexible electronic devices, in particular to a flexible skin for over-limit heat protection of high-speed aircraft based on porous foam and a method thereof. Background technique [0002] Existing flexible skins cannot be used in ultra-high temperature environments. The reason is that the maximum temperature resistance of the flexible and extensible polymer base material does not exceed 400 degrees Celsius. High temperature will cause the molecular chain of the flexible base material to break, and the surface will be carbonized, which will make the base material lose its ductility and fail to realize the technical requirements of stretchable and stretchable flexible skin. However, most of the existing sweating and cooling technologies use rigid materials such as metal materials as the substrate, which cannot meet the project requirements of extensibility and stretching. [0003] At present, t...
Claims
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IPC IPC(8): B32B3/24B32B27/28B32B25/00B32B25/08B32B25/04B32B27/08B32B5/18B64C1/12B64G1/58
CPCB32B3/266B32B5/18B32B25/00B32B25/042B32B25/08B32B27/08B32B27/283B32B2266/0214B32B2307/306B32B2383/00B64C1/12B64G1/58
Inventor 吕晓洲包为民白光辉霍文霞马伟
Owner XIDIAN UNIV