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Heat insulation pad

A technology of heat insulation pads and components, which is applied in the direction of aerospace vehicle heat protection devices, space navigation equipment, space navigation equipment, etc., and can solve problems such as inappropriate heat insulation pads, low heat insulation efficiency, and difficulty in meeting target requirements , to achieve high dimensional stability and improve geometric positioning accuracy

Active Publication Date: 2019-10-22
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

The rigidity and stability of titanium alloy meet the requirements, but the heat insulation efficiency is low, and it is difficult to meet the target requirements in a limited space
Polyimide and FRP have poor rigidity and poor stability, and it is difficult to meet the pointing stability requirements of star sensors
Therefore, it is not suitable to use a single material heat insulation pad as a heat insulation pad between the star sensor and the camera in the traditional way

Method used

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation modes and specific examples of the present invention; but this is not the only form for implementing or using the specific embodiments of the present invention. The description covers features of various embodiments as well as method steps and their sequences for constructing and operating those embodiments. However, other embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0026] T...

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Abstract

The invention provides a heat insulation pad. The heat insulation pad is positioned between a low-temperature assembly and a high-temperature assembly, and comprises an upper titanium alloy cap, a polyimide column and a lower titanium alloy cap; a structure can be realized by embedding the polyimide column into the upper titanium alloy cap and the lower titanium alloy cap, and can also be realizedby embedding the upper titanium alloy cap and the lower titanium alloy cap in the polyimide column, and are fixedly connected through screws, when in a unstressed mode, a gap is reserved between theupper titanium alloy cap and the lower titanium alloy cap, and a gap value between the upper titanium alloy cap and the lower titanium alloy cap is 0 after the screws are screwed according to the 80%pre-tightening force. The heat insulation pad provided in the application adopts the heat insulation pad with a titanium alloy and polyimide composite structure, the rigidity is provided through the titanium alloy, the structure size is kept stable, thermal resistance is provided through polyimide and a separation interface, and finally large thermal resistance, high rigidity and high size stability of the heat insulation pad are realized.

Description

technical field [0001] The invention relates to the technical field of space thermal control, in particular to a heat insulation pad. Background technique [0002] The star sensor is a high-precision space attitude measurement device with the star as the reference system and the starry sky as the working object. In surveying and mapping cameras or detailed inspection cameras, in order to improve the geometric positioning accuracy of remote sensing images of space cameras, the star sensor needs to be integrated with the space camera. In order to ensure the measurement accuracy of the star sensor, the working temperature level of the star sensor is required to be around 10°C, while the working temperature level of the space camera is generally 20°C. Therefore, the installation interface between the star sensor and the camera needs to take heat insulation measures to ensure the respective temperature levels of the two. [0003] In general, heat insulation pads made of low the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/58B64G1/66
CPCB64G1/58B64G1/66
Inventor 田富湘何欣谭进国刘强
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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