H1
An 18-metre rocket sized for spacecraft that weigh grams, not tonnes. Both stages burn liquid hydrogen and liquid oxygen, so the only thing H1 leaves in the sky is water.
| Height | 18.4 m |
|---|---|
| Diameter | 1.2 m |
| Stages | 2 |
| Propellants | Liquid hydrogen and liquid oxygen |
| First stage | 7 HB-1 engines, 280 kN at liftoff |
| Second stage | 1 HB-1V vacuum engine |
| To 550 km orbit | 140 kg |
| First flight | 2027 |
HB-1
Hydrogen engine, 40 kN
Expander cycle: hydrogen cools the nozzle on its way in, picks up heat and drives the turbopump with it. No gas generator, no soot, nothing burnt that the next flight has to clean.
Specific impulse 448 s in vacuum. Every kilogram of propellant pushes about a third longer than it would in a kerosene engine.
Send one bit to the Moon
Pick a 0 or a 1 and a call sign. MOONBIT, our lunar relay, keeps your bit in orbit for the life of the mission and transmits it back to Earth on every pass. Reserving is free.
214 806
bits reserved so far
Bit reserved
- Slot
- Value
- Call sign
- Registry
- First transmission
- After MOONBIT reaches lunar orbit, 2028