Impulse Space raises a $500m Series D led by One Through Seven Ventures and Banner VC, bringing total funding to just over $1bn.
Eric Romo says Impulse is hiring and expanding facilities with the new money, even though it already had ample cash and no urgency.
Romo argues Helios can deliver geostationary satellites on launch day, saving tens of millions per flight that operators now lose while satellites spend six to ten months in transfer orbit.
Impulse Space leans into defense as commercial transfers fall short
Impulse Space is building in-space mobility as a defense business first and a commercial one second. Its original commercial transfer market was too small, while Space Force now has to protect satellites in much larger orbits and needs spacecraft that move fast. Helios keeps a commercial case alive by giving geostationary customers back months of lost time, and a $500m round funds the scale-up.
Takeaways
Series D came from strength, not need. The $500m round, led by One Through Seven Ventures and Banner VC and oversubscribed by insiders, lifts total funding to just over $1bn. Impulse already had ample cash, so it funds faster hiring and bigger facilities. People are its largest expense.
Commercial orbital transfer proved too small a market. Mira was first aimed at commercial orbital transfer, but margins were around 20 percent and launches had to be bought from SpaceX. After its first mission succeeded, Space Force talks turned to defense. Romo calls Mira closer to a fighter jet than a tugboat.
Helios sells time back to geostationary operators. Falcon 9 rides leave satellites six to ten months from station, earning nothing while they burn fuel. Falcon Heavy goes direct but costs far more. Helios arrives on launch day, worth tens of millions per flight versus $5 to $10m in costs.
Defense demand now drives in-space mobility. Space Force must defend satellites never before threatened, while China has five companies trying to be SpaceX. Its budget went from about $17bn to a $71bn request. Higher orbits are vastly larger than low orbit, so defenders need fast spacecraft to inspect foreign satellites.
Romo doubts much of the commercial orbit-moving market. Moving objects around low Earth orbit has largely produced no completed transactions. Romo calls much of the debris cleanup pitch a scam, and a NASA study found its economic value low. The geostationary market has been flat to down for a decade.
SpaceX lessons shape speed and accountability. Romo took iteration speed and insourcing from early SpaceX, where a key vendor shut down and outside parts took two weeks to return. Impulse hires mainly technical talent and assigns one person to each part, vehicle or process.
What comes next at Impulse
Helios is planned to fly at the beginning of next year, after more engine testing.
A second Helios tank moves to the desert test stand.
Mira production continues under contracts, at about one vehicle per month.
Caravan, which would carry several small spacecraft on one ride, has a couple of flights planned for 2028.
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On this episode 2
Show 1
The announced Rigel engine is meant to serve a wide range of programs.