Top 28 Aerospace Engine startups

Updated: Nov 29, 2025
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These startups are developing engines for rockets, spacecraft and satellite propulsion, deep space exploration vehicles.
1
Pangea Aerospace
Country: Spain | Funding: €27.1M
Pangea Aerospace develops advanced rocket engines for use in launch vehicles and spacecraft.
2
Ursa Major
Country: USA | Funding: $434.3M
Ursa Major provides a propulsion system for space launch, hypersonics, and national security.
3
Firefly Aerospace
Country: USA | Funding: $796M
Firefly Aerospace provides launch vehicles, spacecraft, and in-space services for small payloads. Firefly’s on-orbit services include deorbiting services to help minimize space debris. Firefly’s lunar lander is flying annual missions to the Moon with payload services customized to the technology and exploration goals of each customer.
4
Galactic Energy
Country: China | Funding: CN¥4.9B
Galactic Energy Aerospace Technology is a private aerospace company that engages in the low-cost commercial space launch business.
5
Impulse Space
Country: USA | Funding: $525M
Impulse Space develops orbital maneuvering vehicles for last-mile cargo delivery.
6
Agnikul Cosmos
Country: India | Funding: $85.8M
Agnikul is a startup that manufactures and launches orbital-class rockets for micro- and nanosatellites. The company has already demonstrated a suborbital rocket launch and plans to launch small satellites into low-Earth orbit using its 3D-printed Agnibaan rocket. Its single-piece semi-cryogenic engine is also 3D-printed from Inconel and includes everything from the injector to the cooling channels. After printing, the company performs CT scanning, heat treatment, grinding and cleaning in preparation for launch. The startup is also working on refurbishing the launch vehicle's lower stage, which can be reused for subsequent missions.
7
Benchmark Space Systems
Country: USA | Funding: $58.1M
Benchmark Space Systems is an aerospace company that offers propulsion solutions for small satellite applications.
8
Safran
Country: France
Safran is an international technology group with divisions in aerospace, defense, and security.
9
HyPrSpace
Country: France | Funding: €44.1M
HyPrSpace is a french aerospace startup developing a new kind of hybrid rocket engines : the kind that actually works.
10
Venus Aerospace
Country: USA | Funding: $43M
Venus Aerospace is a space company that provides an innovative approach to hypersonic transportation.
Boris Maslennikov
Editor: Boris Maslennikov
Boris Maslennikov is a senior editor for Space-Startups. He has spent more than a decade covering the global space industry as a business journalist. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science from the California Institute of Technology. In his free time, Boris enjoys studying history and mathematics, with a particular interest in the history of mathematics. You can contact Boris at borismaslenikov(at)space-startups(dot)com