A Torrance, California, startup called Castelion Corp. just landed one of the more unusual contracts in recent Pentagon history: $104,998,566 to put a hypersonic missile called Blackbeard on the Navy’s F/A-18 Super Hornet, with a target of carrier-based readiness by 2027.
The deal, published in the Department of Defense’s daily contract digest on April 24, 2026, covers integration engineering, flight testing, and the safety and airworthiness certification the Navy requires before any new weapon can fly off a carrier deck. It is structured as a Small Business Innovation Research Phase III award, a designation that means Castelion has already passed earlier proof-of-concept stages and is now funded to bring Blackbeard through full-scale integration on an active fleet aircraft.
What $105 million buys
The contract falls under SBIR topic AF231-D026, originally scoped by the Air Force to develop low-cost, highly manufacturable long-range strike weapons. The Phase III label is significant: it signals that the government reviewed Castelion’s earlier work and decided the technology was mature enough to justify a much larger investment aimed at real-world fielding.
Deliverables spelled out in the award include early operational capability requirements, physical integration onto the F/A-18E/F Super Hornet airframe, ground and flight tests, and the documentation package needed for airworthiness certification. Each milestone must be cleared before the Navy can make any volume procurement decision. In practical terms, this is a gateway contract. If Blackbeard passes, the Navy could move toward buying the weapon at scale for its carrier strike groups. If it fails a critical test or certification review, the program stalls.
Castelion has also separately raised $100 million in private capital for hypersonic strike weapon development, a round reported by The Wall Street Journal in 2024. That gives the company a combined war chest of roughly $205 million between government and private funding, an unusual dual-track financial position for a firm of its size and a sign that both the Pentagon and venture investors are placing the same bet: that a startup can deliver fielded hypersonic weapons faster and cheaper than traditional defense primes have managed.
Why the Super Hornet is the right platform
The choice of the F/A-18 Super Hornet is deliberate. The Super Hornet remains the backbone of Navy carrier aviation, equipping every carrier air wing in the fleet, and will continue flying well into the 2030s even as the service evaluates next-generation replacements. Integrating Blackbeard onto an aircraft already deployed across the force means the Navy could field a hypersonic strike option without waiting for a new airframe or overhauling carrier deck operations.
For carrier strike groups operating in the Western Pacific or the Mediterranean, a working hypersonic weapon would offer something current carrier-launched munitions cannot: the ability to hit hardened or time-sensitive targets at extreme range and at speeds above Mach 5, following flight paths that are far harder for adversary air defenses to track and intercept than those of conventional cruise missiles or guided bombs.
That capability gap has been a persistent concern for Navy planners. China’s expanding network of anti-ship ballistic missiles and integrated air defenses has pushed carrier operations farther from contested coastlines, stretching the reach of existing strike weapons. A carrier-launched hypersonic missile would help close that gap without requiring the fleet to move closer to threat envelopes.
A startup in a domain ruled by giants
Blackbeard’s path to the flight deck is notable partly because of who is building it. Hypersonic weapon development in the United States has been dominated by established defense contractors, and the track record has been rocky. The Air Force’s AGM-183A ARRW program, led by Lockheed Martin, was canceled in 2024 after repeated test failures and cost growth. The Navy’s own Conventional Prompt Strike program, designed to put a hypersonic glide body on submarines and destroyers, has faced schedule delays. The Air Force’s Hypersonic Attack Cruise Missile (HACM), being developed by Raytheon, is further along but still years from widespread deployment.
Castelion’s SBIR pathway compresses the typical acquisition timeline because Phase III awards allow the government to bypass some of the procedural overhead that slows large contracts with established firms. The 2027 target for carrier-based readiness, reported in coverage of Castelion’s plans, is aggressive by any defense acquisition standard. Traditional weapon integration programs on carrier aircraft often stretch five years or longer. Whether Castelion can actually hit that mark depends on flight test results and certification reviews that have not yet taken place.
The SBIR structure also carries a tradeoff: it gives a small company faster access to meaningful funding, but it does not guarantee the kind of sustained production support that a full program of record would provide. If Blackbeard succeeds in testing, the Navy would still need to establish a formal acquisition program to buy the weapon in quantity, a process that introduces its own delays and political dynamics.
What is known and what is not
The strongest facts here are a matter of federal record. The DoD contract notice identifies Castelion Corp. of Torrance, California, as the awardee, lists the precise dollar value, and classifies the work as SBIR Phase III under topic AF231-D026. The SBIR program database confirms the government requirement area as low-cost long-range strike weapon production and flight testing.
Beyond the contract itself, significant gaps remain. No Navy program official has publicly confirmed the 2027 integration timeline; that date comes from reporting on Castelion’s plans rather than the contract notice, which lists deliverables but not a completion year. Blackbeard’s technical specifications, including its range, speed class beyond the broad “hypersonic” label, warhead type, and payload weight, have not been disclosed by Castelion or the Department of Defense.
The funding breakdown within the $105 million is also opaque. The contract notice gives only the aggregate value without specifying how much goes to integration engineering versus flight testing versus certification documentation. That split matters because flight testing hypersonic weapons is notoriously expensive, and cost overruns in test campaigns have derailed other programs.
Castelion’s results from earlier SBIR phases are not publicly detailed beyond the topic overview. Those stages typically involve initial design, limited prototyping, and early risk-reduction testing. Without knowing what the company demonstrated in Phases I and II, outside observers cannot assess how close Blackbeard actually is to a flyable, certifiable weapon versus an early prototype that still needs significant engineering work.
What happens next for Blackbeard
The contract confirms that a startup has been handed a real opportunity in a domain long dominated by Lockheed Martin, Raytheon, and Northrop Grumman. It does not yet confirm that Blackbeard will become a standard weapon hanging under carrier wings. The distance between a Phase III integration contract and a fielded weapon is measured in successful flight tests, clean certification reviews, and follow-on production awards, none of which have happened yet.
For the Navy, the stakes extend beyond a single missile. The service has watched the Air Force’s hypersonic stumbles closely and is under pressure from Congress and the Pentagon’s own leadership to field a credible hypersonic strike capability before the end of the decade. If Castelion delivers, it would validate a model where small, venture-backed firms can compete with legacy primes on frontline weapons. If the program slips or fails in testing, it becomes another data point in a pattern of hypersonic ambition outrunning engineering reality.
The milestones to watch in the months ahead: ground integration tests on the Super Hornet airframe, the first captive-carry flights, and eventually a live-fire test. Each step will reveal whether Blackbeard is as close to operational as its backers believe, or whether the hardest engineering problems are still ahead.
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*This article was researched with the help of AI, with human editors creating the final content.
