Load-sweating integrated skin structure for additive manufacturing

By integrating a thin-walled dense shell, a spatial lattice support-fluid delivery system, and a capillary sweating structure using additive manufacturing technology, the complexity of processing and insufficient strength of existing sweating cooling structures have been solved, achieving efficient thermal protection and lightweight design for hypersonic aircraft.

CN116002041BActive Publication Date: 2026-05-26HANGZHOU YUNQI JIUTIAN INTELLIGENT MANUFACTURING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202310061999.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-16
Publication Date
2026-05-26
Estimated Expiration
2043-01-16

AI Technical Summary

Technical Problem

Existing sweating cooling structures suffer from problems such as complex processing, weak connections, local hot spot effects, and insufficient strength in high-temperature environments, making it difficult to meet the thermal protection requirements of hypersonic aircraft.

Method used

It adopts an integrated load-bearing and sweating skin structure for additive manufacturing, which is composed of a thin-walled dense shell structure, a spatial lattice support-fluid delivery structure and a capillary sweating structure. Through additive manufacturing, it is integrally formed to form a high-strength multi-dimensional lattice configuration, realizing the integration of load bearing and sweating cooling.

Benefits of technology

It improves load-bearing capacity and sweating cooling efficiency, reduces the volume and weight of the structure, realizes active thermal protection for hypersonic aircraft, reduces the risk of failure, and is suitable for sweating cooling components such as the nose cone and skin of hypersonic aircraft.

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Abstract

This invention discloses an integrated load-bearing and sweating skin structure for additive manufacturing. Its key feature is that it is composed of three structures sequentially composited from the inside out: a thin-walled dense shell structure, a spatial lattice support-fluid infusion structure, and a capillary sweating structure. The thin-walled dense shell structure layer and the spatial lattice support-fluid infusion structure layer are integrally formed through additive manufacturing, with the lattice structure in the spatial lattice support-fluid infusion structure layer extending into the capillary sweating structure layer. This structure possesses excellent stress resistance and high sweating cooling efficiency, and can replace existing passive thermal protection structures for hypersonic vehicles. It can achieve miniaturization, lightweighting, and long-range capabilities, while reducing the failure risk caused by connecting multiple structures.
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Citation Information

Patent Citations

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