Lander
Blue Ghost
Firefly Aerospace
LEROS 4-ET is Nammo UK's bipropellant main engine on Firefly Blue Ghost.
Spec
Public package awards: about $93.3 million for Mission 1, about $112 million for Mission 2, about $179.6 million for Mission 3, about $176.7 million for Mission 4, and about $144.2 million for Mission 5.
Blue Ghost is Firefly's lunar lander for five booked missions. Nammo UK supplies the LEROS 4-ET bipropellant main engine for lunar orbit insertion and powered descent. Firefly builds the Spectre reaction control thrusters, the avionics and guidance, and the power and solar resources for payload operations through the lunar day.
Mission brief
Mission 1 launched on a Falcon 9 on 15 January 2025 and landed upright at Mare Crisium on 2 March 2025. All 10 NASA payloads operated through a lunar day and into the night. Mission 2, NET 2027, is the far side delivery, with the lander stacked on Elytra Dark and with ESA's Lunar Pathfinder. Mission 3, NET around 2028, carries six NASA science payloads to the Gruithuisen Domes and a Honeybee rover. Mission 4, NET around 2029, is the south pole CS-6 delivery with MoonRanger and the Canadian Space Agency rover. Mission 5, NET around 2028, is the CS-8 Moon Base delivery to the near side with NASA SCALPSS, LRA, and LETS.
Schematic
Nammo UK's LEROS 4-ET is the main engine. Firefly builds eight Spectre bipropellant reaction control thrusters, about 1,600 N total, and twelve cold gas attitude control thrusters with Alpha rocket heritage. Castheon prints the Spectre hardware in C-103 class metal. Four carbon composite landing legs use crush core honeycomb, and footpad contact sensors trigger main engine shutdown at touchdown. Four propellant tanks and two helium pressurant tanks are carbon fiber overwrapped. Marotta Controls supplies the FDV060 fill and drain valves and the MV130HLT-L latching isolation valves. Vulcan Wireless supplies the S-band and X-band radios. On Mission 1, Rocket Lab supplies solar arrays of about 400 W class plus MAX Flight and MAX Ground software, Redwire supplies the cameras, the vision navigation processor, and the floodlights, NGC Aerospace supplies the optical navigation demo, Swedish Space Corporation runs the ground stations, and JPL ran environmental testing on the flight article. Two Firefly gimbals point the X-band antenna and the LuGRE, LEXI, and NGLR apertures. Firefly's battery pack supports operations through the lunar day. Mission 3 carries the Honeybee Robotics rover.