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Non-pyrotechnic stage separation structure

A technology of inter-stage separation and non-pyrotechnics, applied in space navigation equipment, space vehicle, space vehicle docking device, etc., can solve the problems of complex intermediate transmission links, difficult manufacturing and assembly, and no application examples of the technology , to achieve the effect of simple structure, light weight and reliable connection

Active Publication Date: 2017-08-29
BEIJING LINJIN SPACE AIRCRAFT SYST ENG INST +1
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AI Technical Summary

Problems solved by technology

Foreign countries, especially European and American countries with advanced aerospace technology, have carried out research on separation devices based on non-pyrotechnic products. Foreign countries use shape memory alloys as the power source of non-pyrotechnic separation devices to design separation devices. The power is amplified, the intermediate transmission link is complicated, the manufacturing and assembly are difficult, and the separation time is long
Domestic research on non-explosive products is in its infancy, and there are no application examples of related technologies

Method used

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , figure 2 As shown, a non-pyrotechnic inter-stage separation structure includes a shape memory alloy connector 1, a heating plate 2 and a collector 3. The material of the shape memory alloy connector 1 is titanium-nickel alloy or titanium-nickel-copper alloy. When the shape memory alloy When the connector material is titanium-nickel alloy, the ratio of titanium alloy is 49% to 51%, and the ratio of nickel alloy is 49% to 51%. When the material of shape memory alloy connector is titanium-titanium-nickel-copper alloy, the ratio of titanium alloy is 48%. %~51%, the proportion of nickel alloy is 48%~10%, and the proportion of copper alloy is 0.1~2%.

[0020] The martensitic phase transition temperature range of the material of the shape memory alloy connector 1 is -10°C to 30°C. When the temperature of the shape memory alloy connector ...

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Abstract

The present invention discloses a non-pyrotechnic stage separation structure comprising a shape memory alloy connection, a heating plate and a collector. One end of the shape memory alloy connection is bent and deformed under the condition that the temperate is less than the phase transition temperature, the other end of the shape memory alloy connection penetrates a first hold section and a second hold section of an aircraft, the first hold section and the second hold section are fixedly connected by a locking piece, and the collector covers the locking piece. The non-pyrotechnic stage separation structure is initiated in domestic, can meet connection and separation requirements of spacecrafts, and is applied to small-sized separation devices of spacecrafts. The non-pyrotechnic stage separation structure can be connected with and separated from the hold sections through the memory alloy and the heating plate. The non-pyrotechnic stage separation structure is simple in structure, reusable, and simple and convenient to install.

Description

technical field [0001] The invention relates to a separation structure between non-pyrotechnic stages, which belongs to the field of two-stage docking and separation of aircraft. Background technique [0002] The connection and separation technology of spacecraft is an important research content in the aerospace field. The existing separation system mainly consists of several typical combination methods such as tapes, springs, explosive bolts, and reverse thrust rockets. However, relatively speaking, the traditional separation method has relatively large structural space and impact load, and the structural quality of the separation device is large. With the development of aerospace technology, it is urgent to develop a new type of non-pyrotechnic connection and separation device with small size, light weight, low impact or even no impact, so as to meet the growing needs of aerospace applications. [0003] At present, the application of domestic pyrotechnic separation techno...

Claims

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Application Information

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IPC IPC(8): B64G1/64
CPCB64G1/645
Inventor 何春全申泽帆刘建勇车莹娟杜贵轩米滨谢雪明孙洁杨宗鹏於津苏立超谢坤黄兴李朱涛黄永辉赵楠刘洋杜帆姜宏杰
Owner BEIJING LINJIN SPACE AIRCRAFT SYST ENG INST
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