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A method for making a controllable and orderly unfolding solar sail based on shape memory polymer

A technology of memory polymer and production method, which is applied to the power supply system of aerospace vehicles, etc., can solve the problems of leaky solar sail structure, unstable deployment process, and poor deployment reliability, so as to ensure normal operation and simple deployment driving mechanism , the effect of not easy failure

Active Publication Date: 2017-07-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of complex drive mechanism, unstable deployment process, easy structure damage and air leakage in existing solar sails with an inflatable structure, as well as the complex structure of solar sails with mechanical deployment support structures, Poor unfolding reliability, heavy overall weight, low folding efficiency, and large launch volume

Method used

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  • A method for making a controllable and orderly unfolding solar sail based on shape memory polymer
  • A method for making a controllable and orderly unfolding solar sail based on shape memory polymer
  • A method for making a controllable and orderly unfolding solar sail based on shape memory polymer

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine figure 1 , Figure 4 , Figure 5 To describe this embodiment,

[0025] A method for manufacturing a controllable and orderly unfolded solar sail based on a shape memory polymer, comprising the following steps:

[0026] Step 1, using one or more of epoxy thermoplastic shape memory polymers, epoxy thermosetting shape memory polymers, polyimide shape memory polymers, and cyanate shape memory polymers as the shape memory polymer material; add reinforcing material to the shape memory polymer material, then synthesize the shape memory polymer film with similar shape and size according to the shape and size of the flexible material reflective film with the shape memory polymer material after adding the reinforcing material, and Cover the electrothermal film on the shape memory polymer film;

[0027] Step 2. Make the flexible material reflective film and the electrothermal film respectively located on both sides of the shape memory ...

specific Embodiment approach 2

[0034] Specific implementation mode two: combination figure 2 , Figure 5 To describe this embodiment,

[0035] The shape-memory polymer film described in this embodiment is multi-segment, that is, the shape-memory polymer film contains multiple film units; the multiple film units of the shape-memory polymer film have different glass transition temperatures, and under the same heating conditions , the first to reach the glass transition temperature will be unfolded first, and the orderly deployment of the solar sail will be realized.

[0036]Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Specific implementation mode three: combination image 3 , Figure 5 To describe this embodiment,

[0038] The electrothermal film described in this embodiment includes a plurality of electrothermal film units, and the folded electric heating film units are sequentially energized and heated, so that the shape memory polymer films at different sections or at different units successively achieve vitrification. Change the temperature to realize the orderly deployment of the solar sail.

[0039] Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention provides a manufacturing method of a solar sail capable of being unfolded controllably and orderly based on shape memory polymers, and relates to the manufacturing method of the solar sail, in particular to the manufacturing method of the solar sail for a spacecraft. The invention aims to solve the problems that a driving mechanism is complex, an unfolding process is instable, a structure is easy to damage and air leakage occurs existing in the conventional solar sail with an inflatable type structure, and solve the problems that the structure is complex, the unfolding reliability is poor, the total weight is large, the folding efficiency is low and the emitting volume is large existing in the solar sail with a mechanical unfolded and supported structure. The manufacturing method disclosed by the invention comprises the following steps of firstly synthesizing shape memory polymeric materials into shape memory thin polymer films, and covering electrothermal films on the shape memory thin polymer films; and fixing flexible material light reflecting films on the shape memory thin polymer films covered with the electrothermal films, then energizing for heating the electrothermal films until the shape memory thin polymer films are softened, orderly folding the sail surface of the solar sail, and after power cut, cooling the electrothermal films so as to obtain the solar sail which is folded. The manufacturing method disclosed by the invention is suitable for manufacturing the solar sail.

Description

technical field [0001] The invention relates to a manufacturing method of a solar sail, in particular to a manufacturing method of a solar sail used for a spacecraft. Background technique [0002] As early as 400 years ago, the famous astronomer Kepler had imagined the possibility of not carrying any energy, but only relying on the energy of sunlight to make the spacecraft gallop into space. And calculate the specific thrust that sunlight can provide for the spacecraft. In 1924, Tsiolkovsky, the pioneer of the Russian aerospace industry, and his colleague Chandel clearly proposed "to obtain the cosmic velocity by the thrust produced by the sunlight shining on a very thin huge reflector". Chandel first came up with the idea of ​​a solar sail—an ultrathin metal sail wrapped in rigid plastic that is the basis for building solar sails today. [0003] On June 22, 2005, Russia used the "Wave" rocket to launch the "Cosmos-1" spacecraft powered by sunlight, making the first contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/44
CPCB64G1/44
Inventor 刘彦菊赵伟刘立武冷劲松杜海洋
Owner HARBIN INST OF TECH
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