Aerospace materials | Lithium-ion safety | Test-led development
Hiryuu Technologies
Engineering practical thermal protection and fire mitigation concepts for systems where heat, flame, and propagation risk matter.
What We Work On
Focused engineering for heat-driven failure modes.
Hiryuu is building around two connected problems: protecting aerospace structures during high heat events and reducing thermal runaway propagation in compact lithium-ion battery packs.
Battery Fire Mitigation
Insertable thermal barriers intended to reduce heat transfer, block flame and hot-gas pathways, preserve electrical isolation, and maintain cell-to-cell separation during abuse.
Aerospace Thermal Protection
Prior work explored expendable thermal protection for small reentry capsules using practical materials, coupon testing, and transient heat-transfer modeling.
Applied R&D Support
Proposal-ready concept development, test planning, and technical framing for early-stage engineering programs that need clearer paths to validation.
Current Proposal Focus
Multilayer mitigation insert for MIL-PRF-32565 Li-ion 6T batteries.
Hiryuu's current SBIR proposal work centers on a thin insertable barrier for existing 6T lithium-ion battery cases. The goal is to reduce pack-level abuse severity without redesigning the battery case, cells, or cell chemistry.
The concept is built around three functions: a low-conductivity hot-face shield, a staged-response reactive core, and an endothermic dielectric backer. Together, those layers are intended to manage heat, flame, electrical isolation, and separation inside a constrained battery package.
Platform
MIL-PRF-32565 Li-ion 6T battery architecture
Use case
Vehicle power, silent watch, auxiliary electronics, and sustainment
Phase I work
Material down-select, dielectric checks, dimensional fit, and feasibility testing
Screening basis
Preliminary thermal review around 50 kW/m2, 800 C, and 300 seconds
Engineering Method
A measured path from concept to test article.
The work is intentionally practical: define the environment, choose candidate materials, test the right properties, then update the model before scaling.
Frame the constraint
Start with fit, temperature, dielectric, mass, and integration limits.
Build the layer stack
Combine shielding, staged heat response, and insulation into one insert concept.
Screen and test
Use thermal exposure, surface temperature, erosion, and dielectric behavior to compare options.
Refine for integration
Carry the best configuration toward representative hardware and larger validation work.
Earlier Aerospace Work
Thermal protection concepts for small reentry systems.
Previous proposal work explored a low-cost expendable thermal protection system for small reentry capsules. The concept paired a woven basalt-fiber and phenolic resin outer layer with a lightweight ceramic-fiber blanket backing.
The planned validation path included transient ablation and heat-transfer modeling, small coupon flame testing, infrared temperature measurement, and iteration between model outputs and test data.
Contact
Talk through a thermal, battery safety, or aerospace R&D problem.
For program discussions, technical partnerships, or proposal-related work, contact Hiryuu Technologies directly.