Reusable Heat Shields Through Additive Manufacturing (RHAM)

NASA has a stated strategic goal to promote a commercial presence in LEO, as formalized in their Commercial LEO Destinations (CLDs) program. Given the emphasis on transitioning to CLDs, highly available thermal protection system (TPS) manufacturing has become an even more critical capability. Unfortunately, reusable TPS materials such Alumina-Enhanced Thermal Barrier (AETB or “Shuttle Tile”) developed for the Shuttle program are still the state-of-the-art option despite high costs, long lead times, and incredible amounts of manual labor (~2 tiles/week per technician). To fill this gap, Canopy Aerospace Inc. (Canopy) proposes to develop the Reusable Heatshields Additive Manufacturing (RHAM) platform, that allows rapid production of reusable TPS tiles with digitally defined tailorability. The proposed development of RHAM will leverage Canopy’s experience in advanced manufacturing of thermal protection system materials. RHAM advantages are made possible by the unique Canopy innovations that include: 1) New TPS material formulations that open up the space of usable precursors and manufacturing routes; 2) Unique implementation of a state-of-art binder jetting process to produce highly insulative ceramics; and 3) New heat treatment processes fofor forming mechanically resilient porous ceramics.Canopy’s Phase II RHAM project will mature the manufacturing approach, laying the foundation for scalable production of high-performance reusable TPS materials. Phase II will culminate in simulated reentry ground testing at the NASA Langley HyMETS facility, enabling an accurate performance comparison between RHAM and legacy TPS materials. The HyMETS testing will secure readiness level (TRL) 6 for the RHAM technology and indicate readiness for potential transition to both NASA and commercial space companies.