Castelion Blackbeard: $105M F/A-18E/F Hypersonic Integration Award

A $105M Navy contract modification puts a Mach 5+ air-launched hypersonic strike weapon on the carrier flight deck by 2027 — with energetic-material, magazine-storage and live-fire test-range implications that ammunition technicians, weapons-handling crews and energetics safety regulators will need to track now.

Technical Summary

Castelion Corporation, Torrance, California, has been awarded a $104,998,566 modification to its existing US Navy agreement to "complete final early operational capability requirements, provide test and integration configurations of the Blackbeard Hypersonic Weapon, and complete live fire test events" in the US Indo-Pacific Command (USINDOPACOM) area of responsibility. The award builds directly on a $49.9M Naval Air Systems Command (NAVAIR) contract from February 2026 and was reported in open source on 25 April 2026 following the 24 April 2026 contracts listing. Funding splits as $33,983,566 from FY25 RDT&E (Navy) and $71,015,000 from FY26 RDT&E (Navy), with completion by January 2028.

The end-state is integration of Blackbeard onto the F/A-18E/F Super Hornet for carrier-launched Early Operational Capability (EOC) in approximately 18 months — aligned with the US Navy's Multi-mission Affordable Capacity Effector (MACE) programme. Open-source briefings describe Blackbeard as a long-range hypersonic strike weapon flying in excess of Mach 5, manoeuvring within the atmosphere, and engineered for affordability and mass production. Castelion's manufacturing footprint is in New Mexico and Texas. Test flights to date have been reported at approximately Mach 4 (~3,040 mph), with Mach 5+ targeted in upcoming campaigns.

Analysis of Effects

Public information on the warhead is limited and inconsistent. One open-source figure quotes a 95-lb (43 kg) warhead; the MACE programme requirement is reported as 75 lb (34 kg). Either figure places Blackbeard in a small-diameter, kinetic-and-fragmentation class — the lethality model for a Mach 5+ terminal-phase impactor is dominated by kinetic-energy delivery rather than blast yield, which is consistent with a weapon optimised for time-sensitive point targets behind defended air space.

Energetic-material composition for the Blackbeard rocket motor and warhead has not been publicly released. Hypersonic boost-glide and powered-cruise systems in this class typically use minimum-signature, high-impulse solid propellants (HTPB or related composite formulations) with an Insensitive Munitions (IM) compliance objective per STANAG 4439 and AOP-39. Hazard Division and Compatibility Group must therefore remain at reference (HD 1.1 / CG D for the all-up round, pending Munitions Safety Information Analysis Center (MSIAC) qualification data) until lot-specific Hazard Classification (HC) is made public.

Personnel and Safety Considerations

Carrier deck and magazine handling of an air-launched hypersonic round introduces three issues for ammunition technicians and weapons-handling personnel. First, magazine separation and quantity-distance under NATO Allied Ammunition Storage and Transport Publication 1 (AASTP-1) for a high-impulse rocket-motor round must be assessed against the all-up-round NEQ — not the warhead alone. Second, IM qualification under AOP-39 (Slow Heat, Fast Heat, Bullet Impact, Fragment Impact, Sympathetic Reaction, Shaped Charge Jet) is the appropriate gate before stowage in a CVN magazine adjacent to legacy ordnance. Third, deck-handling Render Safe Procedures (RSP) for an unfired round in a damaged or fire-affected aircraft will require operator-specific publications that do not yet exist.

Live-fire test events in USINDOPACOM also imply a sea-range Explosive Safety Zone (ESZ) calculation against the largest credible NEQ, plus debris-trajectory modelling for a Mach 5+ failed-flight event. Range-safety officers should expect a footprint considerably larger than legacy subsonic stand-off weapons of similar warhead mass.

Data Gaps

• DATA GAP: Warhead net explosive quantity (NEQ) and energetic-material formulation — central to AASTP-1 quantity-distance, IM qualification and magazine compatibility decisions.
• DATA GAP: Rocket-motor propellant chemistry, mass and impulse — affects the all-up-round Hazard Division assignment and IM test outcomes.
• DATA GAP: Fuze and Safe-and-Arm device characterisation — STANAG 4187 / STANAG 4368 compliance unclear from open source.
• DATA GAP: Independent Mach 5+ flight test verification — Castelion has reported approximately Mach 4 in flight to date; Mach 5+ remains a programme target.
• DATA GAP: Full-rate production unit cost — programme literature emphasises affordability versus PrSM Increment 4, but no unit-cost figure has been released.