
Hermeus Raises $350 Million to Accelerate Hypersonic UAV Development
Key Takeaways
- Hermeus raised $350 million, valuing the company at $1 billion.
- Equity round led by Khosla Ventures with participation by Canaan Partners, Founders Fund, RTX Ventures.
- Two successful flight demonstrations underpin progress; third test vehicle planned; LA vs Atlanta disputed.
Funding Milestone
Hermeus raised $350 million, valuing the company at $1 billion.
“Defense startup Hermeus has raised $350 million to keep developing what it calls the “fastest unmanned aircraft,” in a funding round that has pushed its valuation to $1 billion”
$200 million was equity led by Khosla Ventures with participation from existing investors.

$150 million came as debt, structured to limit dilution.
This signals growing investor appetite as the Pentagon races to counter hypersonic threats.
Iterative Development
The company builds one aircraft per year to unlock specific technical challenges.
Its second and largest demonstrator flew last month, approximately the size of an F-16.

A third aircraft is now in development.
CEO Piplica says hardware failure is a milestone to plan around.
Strategic Military Focus
Hermeus zeroed in on military contracts from day one.
“Defense aviation startup Hermeus just closed a $350 million funding round to accelerate development of autonomous hypersonic aircraft, the company announced Tuesday”
This focus is paying off as the DoD accelerates hypersonic weapons development.
Hermeus adapted existing turbine-based combined cycle engines.
Its continuous demonstrations are building credibility.
Pivotal Engine Decision
Hermeus had spent time and money developing its own engine.
After courting RTX Ventures, a new opportunity arose.

The choice opened doors to strategic partnerships and funding.
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