Annular deorbit sail based on memory alloy
By using the combination of memory alloy wire ring and sail film, the lightweight deployment mechanism of the annular off-orbit sail is realized, solving the problems of large weight of the existing off-orbit sail and complex deployment mechanism, and improving the rapid off-orbit capability of micro-nano satellites.
CN119683013AActive Publication Date: 2025-03-25AEROSPACE DONGFANGHONG SATELLITE
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Patent Information
- Application Number
- CN202411695978.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2044-11-25
AI Technical Summary
Technical Problem
The existing unorbital sail has a large expansion mechanism, a large housing structure, and a complex deployment mechanism, making it difficult to meet the demand for micro-nano satellites to quickly deorbit.
Method used
The circular off-rail sail based on memory alloy is adopted. Through the combination of memory alloy wire ring and sail film, the sail surface is expanded and contracted, simplified the deployment mechanism and reduced weight.
Benefits of technology
The lightweight and simplification of the deployment mechanism are achieved, the reliability and efficiency of the off-rail sail are improved, and the problems of large weight and complex deployment mechanism in the prior art are overcome.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to an annular deorbit sail based on memory alloy, and relates to the technical field of spacecraft deorbit reentry. The device comprises a structure main body, an unfolding device and an unlocking device, the unfolding device and the unlocking device are both arranged on the structure main body, and the structure main body is of a boss structure; the unfolding device comprises a sail surface and a sensor; the sail surface is fixed on the structure main body, the sail surface has two states: an unfolded state and a contracted state, the unfolded state is a single-circle plane state so as to form an annular deorbit sail, and the contracted state is that the single-circle plane area of the sail surface is reduced by folding so that the sail surface can be stored in a space smaller than the single-circle plane area of the sail surface in the unfolded state; the sensor is arranged on the structure body and used for recognizing the contraction state and the expansion state of the sail face. The unlocking device is used for storing the sail face in the contracted state and releasing the sail face to the unfolded state and comprises a hot knife resistor, a locking rope and a constraint heat insulation cover. And the constraint heat insulation cover is mounted on the structure main body and accommodates the sail surface in a compressed state.
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