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Application Scenarios
- Tactical & strategic solid motors: stage-one and -two throat inserts; divert & attitude-control nozzles for interceptor vehicles
- Reusable launch: vehicle upper-stage engines: pintle sleeve, variable-area side-exit nozzle, providing deep-throttling 10:1
- Space-tourism hybrid motors: graphite nozzle upstream of ablative exit cone, giving 5+ flight cycles before refurbishment
Functional Features
- Isotropic grain structure (≤ 15 µm): allows 5-axis machining of complex 3-D throat contours to Ra 0.8 µm without post-grind
- Vacuum purification 2,000 °C: removes alkali & transition metals to < 30 ppm, suppressing catalytic oxidation in steam-rich exhaust
- Optional graded CVD SiC (50–150 µm) or Ir/Re duplex coating: increases oxidation onset and reduces recession by 70 %
- Integral threaded or bayonet stub: enables snap-fit into Nb or Ti-alloy housing, eliminating heavy fasteners and shortening assembly time 40 %
- Laser-serialised 2-D code on flange: full digital twin (machining log, coating thickness map, thermal test) supplied for every insert
Harog Technology – Technical & Supply Advantages
HARO-RN-Graphite combines ultra-high thermal shock resistance, near-zero thermal expansion and proven 60-second burn-life in solid and bi-propellant engines. Harog Technology’s fully integrated, AS 9100-qualified graphite-and-coating platform delivers flight-ready nozzles with shorter lead times, lower recession rates and full digital traceability—critical enablers for the next generation of reusable launch vehicles, deep-space kick motors and rapid-response tactical systems.
