LΛUNCHER(@launcher):E-2 Block 1 has successfully completed a 200-second mission duty cycle test at nominal operating conditions. This design upgrade reduces mass, simplifies manufacturing, consolidates vehicle interfaces, and incorporates thrust vector control. The next phase of testing will include gimballed engine test fires, followed by engine qualification. E-2 is the highest performance LOX/kerosene engine in the small launch class. Propellants: LOX/Kerosene Thrust: 23k lbf (10.4 tf) Isp Sea Level: 290 s Isp Vacuum: 327 s Isp Vac Version: 365 s Cycle: Ox-Rich Staged Combustion

2026.06.27 01:56

E-2 Block 1 has successfully completed a 200-second mission duty cycle test at nominal operating conditions. This design upgrade reduces mass, simplifies manufacturing, consolidates vehicle interfaces, and incorporates thrust vector control. The next phase of testing will include gimballed engine test fires, followed by engine qualification. E-2 is the highest performance LOX/kerosene engine in the small launch class. Propellants: LOX/Kerosene Thrust: 23k lbf (10.4 tf) Isp Sea Level: 290 s Isp Vacuum: 327 s Isp Vac Version: 365 s Cycle: Ox-Rich Staged Combustion