CompPair Validates HealTech Composite Material for Filament-Wound Space Propellant Tanks
BY Composights
Published: 03 Jul 2026
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Swiss advanced composites company CompPair has completed a manufacturing campaign demonstrating the suitability of its HealTech CS03 slit tapes for producing filament-wound composite propellant tanks, marking another step toward the use of self-healing composites in space applications.
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The campaign focused on validating the compatibility of HealTech CS03 materials with industrial composite tank manufacturing processes while assessing their potential for future launch vehicle and spacecraft propellant storage systems.
According to the company, the manufacturing trials confirmed that HealTech CS03 slit tapes can be successfully integrated into filament winding, one of the primary manufacturing methods used for high-performance composite pressure vessels and propellant tanks.The demonstration also verified the feasibility of manufacturing components with representative propellant tank geometries, providing evidence that the self-healing composite material can be processed into complex structures relevant to aerospace applications.
By validating both manufacturability and process compatibility, the campaign supports the continued development of HealTech materials for lightweight composite tanks that could benefit from enhanced durability and damage tolerance throughout their service life. CompPair's HealTech technology is designed to restore matrix damage and microcracks through a heat-activated healing mechanism,
helping maintain structural integrity and extend the operational life of composite structures without significant weight penalties.
The latest milestone demonstrates that self-healing composite materials can be integrated into established industrial manufacturing workflows, including filament winding, opening new opportunities for advanced composite pressure vessels and propellant tanks used in next-generation space systems.
Source: CompPair | linkedin
