Expandable landing ladder with shape memory effect
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A technology of memory effect and memory, which is applied in the field of aerospace, can solve the problems of complex structure and heavy weight of the landing ladder, and achieve the effect of compact structure, light weight and simple control
Active Publication Date: 2018-10-16
HARBIN INST OF TECH
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[0003] The present invention aims to solve the problem that the existing landing ladd
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specific Embodiment approach 1
[0023] Specific implementation mode one: refer to Figure 1 to Figure 8 Specifically explain this embodiment, a deployable landing ladder with shape memory effect described in this embodiment, which includes a composite material landing ladder 1 and a support rod 2,
[0024] The composite material landing ladder 1 includes two composite material landing ladder legs, the two composite material landing ladder legs are connected by a support rod 2, the composite material landing ladder 1 can be folded or curled in the lander,
[0025] Each composite material landing ladder ladder leg includes two Ω-shaped shape memory composite material beams 3, shape memory foam 4 and resistive heating sheet 5,
[0026] Two Ω-shaped shape-memory composite material beams 3 are buckled, and the shape-memory foam 4 is filled in the gap between the two Ω-shaped shape-memory composite material beams 3, and the inside of the two Ω-shaped shape-memory composite material beams 3 Each surface is pasted ...
specific Embodiment approach 2
[0033] Specific embodiment 2: This embodiment is a further description of the expandable landing ladder with shape memory effect described in specific embodiment 1. In this embodiment, the Ω-shaped shape memory composite material beam 3 is made of carbon fiber shape memory polymer made of composite materials.
[0034] In this embodiment, different types of shape memory polymers have different glass transition temperatures and mechanical properties.
specific Embodiment approach 3
[0035] Specific embodiment three: This embodiment is a further description of the expandable landing ladder with shape memory effect described in specific embodiment one. In this embodiment, the shape memory foam 4 is made of epoxy, cyanate or benzene Made of vinyl.
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Abstract
The invention discloses an expandable landing ladder with a shape memory effect and relates to the field of spaceflight. The expandable landing ladder is used for solving the problem that an existinglanding ladder is complex in structure and large in weight and consequently bears the large weight during launching. Two omega-shaped shape memory composite beams are oppositely closed; a gap betweenthe two omega-shaped shape memory composite beams is filled with shape memory foam; two resistance-type heating sheets are pasted to the inner surfaces of the two omega-shaped shape memory composite beams correspondingly, and the resistance-type heating sheets are used for increasing the temperature of the omega-shaped shape memory composite beams to be larger than the glass-transition temperatureof the omega-shaped shape memory composite beams in the power-on state, so that the omega-shaped shape memory composite beams are expanded; and the shape memory foam has compressibility and is used for providing the extra bearing capacity for expanding of the omega-shaped shape memory composite beams. The expandable landing ladder serves as an important bridge for connecting a lander with the surface of a planet.
Description
technical field [0001] The invention relates to a lightweight, expandable and contractible landing ladder, which belongs to the field of aerospace. Background technique [0002] In the "China's Aerospace" published in 2000, China pointed out that it is necessary to "develop advance research on deep space exploration focusing on lunar exploration" and "occupy a relatively important position in the field of space science in the world, and carry out distinctive space exploration research." . And in 2003, the "China Lunar Exploration Project" was officially launched, and in 2016, the "China Mars Exploration Program" was officially established. Whether it is the lunar exploration project or the Mars exploration program, after the probe lands successfully, whether the rover can be released smoothly is the key to the realization of the exploration plan, and the landing ladder of the rover is an important bridge connecting the lander and the surface of the planet, so designing a T...
Claims
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