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SpaceX
Falcon 9 Block 5 | SDA Tranche 1 Transport Layer A
Recorded mission coverage
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Mission details
Tranche 1 Transport Layer A is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites. The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance. This launch carries 21 satellites manufactured by Northrop Grumman.
Open the full mission →Planned timeline
Planned timings relative to the target. These steps do not indicate live progress.
- T−00:38:00
GO for Prop Load
- T−00:35:00
Prop Load
- T−00:35:00
Stage 1 LOX Load
- T−00:16:00
Stage 2 LOX Load
- T−00:07:00
Engine Chill
- T−00:01:00
Startup
See all 21 published steps ↓
- T−00:01:00
Tank Press
- T−00:00:45
GO for Launch
- T−00:00:03
Ignition
- T+00:00:00
Liftoff
- T+00:01:04
Max-Q
- T+00:02:14
MECO
- T+00:02:18
Stage 2 Separation
- T+00:02:25
SES-1
- T+00:02:31
Booster Boostback Burn Startup
- T+00:03:04
Fairing Separation
- T+00:03:24
Booster Boostback Burn Shutdown
- T+00:06:09
Entry Burn Startup
- T+00:06:21
Entry Burn Shutdown
- T+00:07:15
Stage 1 Landing Burn
- T+00:07:19
Stage 1 Landing