Defense aviation startup Hermeus has secured $350 million in a new funding round to accelerate the development of unmanned hypersonic aircraft, pushing its valuation to approximately $1 billion. The funding includes $200 million in equity led by Khosla Ventures, along with $150 million in debt aimed at supporting large-scale manufacturing while limiting dilution.
The company is focused on building what it describes as the “fastest unmanned aircraft,” targeting hypersonic speeds exceeding Mach 5. These aircraft are designed primarily for defense applications, including national security missions and high-speed military operations.
Founded in 2018, Hermeus has adopted a rapid, hardware-first development approach, producing multiple prototype aircraft in quick succession. The company has already conducted successful test flights of its Quarterhorse vehicles and is working toward achieving sustained supersonic and eventually hypersonic flight capabilities.
CEO AJ Piplica emphasized the importance of scaling production, stating that the funding will allow the company to “build multiple aircraft at the same time” and expand its manufacturing capabilities.
The new capital will also support Hermeus’ transition from experimental prototypes to mission-ready systems, including the development of larger, F-16-sized unmanned aircraft and integration of operational payloads.
Hermeus’ growth comes amid a surge in investment in defense technology, with global venture funding in the sector exceeding $9 billion last year. The company’s focus on high-speed, scalable aircraft aligns with increasing geopolitical demand for hypersonic capabilities.
By combining rapid prototyping with advanced propulsion systems, Hermeus aims to redefine aerial warfare through speed and efficiency, positioning itself as a key player in the next generation of military aviation technology.
