Rocket engine startup Impulse raises $500 million to hire people, not AI

Impulse Space, a startup spearheaded by Tom Mueller, a former SpaceX engine expert, has successfully raised $500 million in a Series D funding round. This capital infusion aims to bolster the company's workforce by hiring up to 200 new employees. The funding round was spearheaded by 137 Ventures and BANNER VC, with additional contributions from Founders Fund, Lux Capital, and Linse Capital. This investment highlights the increasing interest among investors in the realms of space and defense technology, particularly as U.S. government funding for national security initiatives rises and SpaceX prepares for its IPO. Focusing on in-space mobility, Impulse Space has developed a versatile platform named Mira, which is designed specifically for U.S. Space Force clients. Additionally, the company is working on Helios, a vehicle engineered to transport satellites swiftly to elevated orbits after being released closer to Earth. Eric Romo, President and COO, shared with TechCrunch that the newly acquired funds will facilitate the development and testing of more space vehicles. He emphasized the urgency of hiring during a time when skilled aerospace professionals are in high demand. While Impulse's software teams are beginning to utilize AI coding tools, Romo expressed caution, noting that deep learning models are not yet fully equipped to tackle complex real-world engineering challenges. Having joined SpaceX as its 13th employee in 2003, Romo initially focused on creating computer simulations to evaluate engine designs. He reflected on the challenges of past simulations, stating, "I considered it success if I got within 20% of the right answer," highlighting the limitations of earlier technology. Although simulations have seen improvements, Romo believes that practical design, analysis, and testing remain irreplaceable. He also pointed out that the development of AI tools for hardware design may take longer due to the scarcity of suitable training data compared to the abundant text and code available online. Originally concentrated on propulsion, Impulse has shifted its focus to spacecraft development, necessitating an influx of engineers skilled in vehicle structures and flight computers. One strategic move included opening an office in Colorado, a region attracting aerospace talent with more diverse job opportunities beyond traditional hubs like Los Angeles. Looking ahead, Impulse is gearing up for another launch of its Mira spacecraft, following its third flight late last year, which encountered a navigation issue that depleted much of its propellant early in the mission. Romo indicated that the company is preparing for a new Mira mission expected to launch before the year concludes.