Posideon Heavy | Flight 9 | KASA Lunar Mission

Space Systems is officially targeting a NET July 2026 launch window for Poseidon Heavy Flight 9. This dedicated commercial flight operates under a high-priority logistics contract for the Kerbin Aeronautics and Space Administration (KASA). The critical operational objective is the precise delivery of the KASA Lunar Reconnaissance Orbiter into a high-energy Trans-Lunar Injection (TLI) vector.

This mission serves as the official return-to-flight and operational debut of our heavily upgraded V6 booster core cluster, implementing complex throttling procedures to guarantee structural safety margins. Notably, Flight 9 will mark our fleet's first-ever hot-staging sequence, separating the second stage while the center core is still firing. This upgrade eliminates coast-phase gravity losses, yielding a massive boost in upper-stage insertion performance.

T+00:00:00 - Liftoff

T+00:00:55  - Max Q

T+00:02:22 - Side cores go to 3 engines for staging prep

T+00:02:25 -  Side core shutdown and Side cores jettison 

T+00:02:30 - Boost-back Burn Startup

T+00:03:35 - Boost-back Burn shutdown

T+00:04:47 - Center Core MECO (Most Engines Cutoff,1 Kerlin still running)

T+00:04:50 - Second stage Engine start 1

T+00:04:51 - Stage Separation

T+00:05:50 - Entry burn on Side cores

T+00:06:20 - Entry burn on center core

T+00:06:50 - Side cores landing burns

T+00:07:20 - Side Cores Landing burn shutdown

T+00:07:50 - Center core landing burn

T+00:08:30 - Center core landing burn shutdown

T+00:09:40 - Second Stage engine cutoff 1

T+00:45:50 -  Second Stage engine Start 2

T+00:51:50 -  Second Stage engine Cutoff 2

T+01:25:00 - Payload Deploy of the KASA Lunar Reconnaissance orbiter