M-35a
M-35a is the second-stage solid rocket motor under development for JAXA's Epsilon S launch vehicle. JAXA's 23 July 2026 ground-firing report recorded 129.9 s burn time and 355.3 kN maximum thrust; these are identified as preliminary static-test results rather than a universal flight rating.
Identity
- Domains
- spaceflight
- Identity Level
- model
- Kind
- solid-rocket-motor
- Name
- M-35a
- Status
- development
Details
- Description
- M-35a is the second-stage solid rocket motor under development for JAXA's Epsilon S launch vehicle. JAXA's 23 July 2026 ground-firing report recorded 129.9 s burn time and 355.3 kN maximum thrust; these are identified as preliminary static-test results rather than a universal flight rating.
- Rocket Specs
- Burn Time S
- 129.9
- Sea Level Thrust Kn
- 355.3
Assets & Meta
- Creation Time
- August 15, 2026 at 05:20:12 UTC
- Updated Time
- August 15, 2026 at 05:20:12 UTC
Other
- Sources
- Accessed Date
- 2026-08-14
- Note
- JAXA reports the M-35a second-stage static firing completed normally, with preliminary 129.9 s burn time and 355.3 kN maximum thrust.
- Published Date
- 2026-07-24
- Publisher
- JAXA
- Title
- Epsilon S rocket second-stage motor (M-35a) ground firing test results
- Accessed Date
- 2026-08-14
- Note
- JAXA identifies Epsilon S as the solid-propellant launch vehicle under development and distinguishes its new SRB-3 first-stage motor from the second-stage M-35a test program.
- Publisher
- JAXA
- Title
- Epsilon Launch Vehicle