BLUE 1S
Perigee Aerospace
Turbopump-fed LOX/LNG main engine used in the Blue Whale 1 first stage.
Key figurescomparable across the catalogue
- Thrust
- 34,000 N
- Specific impulse
- 324 s
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Propellant
- LOX/LNG (liquid methane)
- Engine cycle
- Gas generator (open cycle)
- Feed system
- Turbopump-fed
- Sea-level thrust
- 34 kN
- Vacuum thrust
- 38 kN
- Sea-level ISP
- 324 s
- Vacuum ISP
- 362 s
- Application
- Blue Whale 1 first stage (9 engines)
- Manufacturing
- Fully vertically integrated, in-house turbopump and chamber production
About
BLUE 1S is Perigee Aerospace’s high-performance turbopump-fed main engine, used nine-across in the Blue Whale 1 first stage. It burns LOX/LNG (liquid methane) propellant using a gas generator open-cycle design that minimizes complexity and cost while maintaining reliability. BLUE 1S produces 34 kN of thrust at sea level (38 kN in vacuum), with a specific impulse of 324 s at sea level and 362 s in vacuum. The engine features an electroformed combustion chamber engineered for exceptional thermal performance and a turbopump-fed feed system delivering an outstanding thrust-to-weight ratio. Perigee manufactures BLUE 1S fully vertically integrated, producing its own turbopumps and combustion chambers in-house.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.