Revolutionary rocket engine company Venus Aerospace raises $91 million to scale design

Houston-based company Venus Aerospace announced today (June 8) the closing of its "Series B" financing round, which raised $91 million to evolve its rotating detonation rocket engine (RDRE) from functioning prototype to a scalable propulsion system with multiple applications. Venus completed a demonstration launch with its test vehicle in May 2025, accomplishing the first such flight from U.S. soil powered by an RDRE. At scale, the company envisions a wide variety of uses for the design, includi