Spaceflight vehicle structure with ultra-light weight, large expansion-contraction ratio and ultra-low temperature working environment

A space vehicle and working environment technology, which is applied to space navigation vehicles, space vehicle heat protection devices, aircraft, etc., can solve the problems of high cost, small shape, and high quality ultra-low temperature heat-proof structure, and achieve low cost and excellent performance. The effect of large scale ratio and strong designability

CN110920938AInactive Publication Date: 2020-03-27BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an aerospace craft structure with an ultra-light, large-expansion-shrinkage-ratio and ultra-low-temperature working environment. The structure comprises multiple layers of inflatable expansion self-stiffening laminated film covers, a light structural plate, interlayer telescopic sleeve rods, telescopic sleeves, an organic fiber net and multiple sets of pressure control valves. The problem that mass application of extreme materials with temperature requirements on spacecrafts is limited due to mutual conflict among the mass, the size and the effect of heat-proof structures on the spacecrafts is solved. After being unfolded, the large ultralow-temperature heat-proof structure is shown as a multi-layer film cover structure; by utilizing a space unfolding structure anda self-stiffening principle, a pressure control valve group is controlled to inflate, maintain pressure and deflate according to a certain sequence, and is matched with local gravity and a telescopicsleeve rod to realize unfolding and shaping, so that a stable ultralow-temperature environment can be maintained for an extreme device with a temperature requirement in a medium-short term in a vacuumenvironment under the condition of no refrigeration equipment. The structure is large in expansion-contraction ratio, simple in modeling and extremely light in weight, the ultralow-temperature heat-proof performance can be guaranteed, and the pressure of a carrying system is reduced.
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Description

technical field

[0001] The invention relates to an ultra-low temperature heat-proof structure, which is an ultra-light space vehicle heat-proof structure with large expansion and contraction ratios that can provide short-term and medium-term stable ultra-low temperature in a vacuum environment. Background technique

[0002] In current cutting-edge scientific research and application fields such as superconductivity and magnetic levitation, the use of related equipment and materials has high requirements on ambient temperature. The ambient temperature of superconducting components is required to be lower than the critical temperature of 77K for high-temperature superconductivity, and the temperature requirements are extreme. , There is a great demand for ultra-low temperature heat protection technology. Ultra-low temperature heat protection technology generally relies on methods such as vacuum insulation, heat shields to reduce radiation, and multi-layer insulation components...

Examples

Embodiment Construction

[0027] The laminated film cover 1, 2, 3 behaves as a thin-walled spherical shell after unfolding, and the laminated film cover 1 is made into a flange connection block 12 at the end joint, and the flange connection block 12 is connected with the organic plastic film part of the laminated film cover 1 The material is the same, and it is integrated with the laminated film cover 1. The flange edge of the aluminum honeycomb panel 4, the flange connection block 12 and the inner flange cover 13 form a sandwich flange connection, which is tightened by flange connection bolts 11 that run through the three parts. The flange connection bolts 11 are evenly arranged along the circumference of the aluminum honeycomb panel 4, and the number, material and size of the bolts are selected according to the requirements to ensure the airtightness of the sandwich flange connection.

[0028] Similarly, the laminated film covers 2 and 3 are respectively connected to the flanges of the telescopic rod ...