SpaceX conducted the eleventh integrated flight test of Starship on October 13, 2025, from Starbase in Texas.
The test, using Booster 15 on its second flight and Ship 38, achieved all primary objectives, including payload deployment, in-space engine relight, and controlled splashdowns for both stages.
This flight marked the final use of a Block 2 vehicle and the last launch from Pad 1 in its current configuration, signaling a shift toward Block 3 hardware and upgraded infrastructure.
Flight Objectives and Preparation
The mission focused on validating reusability elements and gathering data for future iterations.
Booster 15, previously flown on Flight 8 and caught by the tower, was paired with Ship 38, which featured intentional gaps in its heat shield tiles to test reentry resilience without ablative backups.
Eight mass simulators, representing Starlink satellites, were loaded for deployment testing.
Pre-launch activities included cryogenic proofing and static fires, with propellant loading commencing approximately one hour prior to liftoff.
The 75-minute window allowed for weather considerations, which were favorable with clear skies and low winds.
Starship and Super Heavy on the launch pad before test flight 11
Key Flight Events
The flight proceeded nominally through its phases:
Ascent and Separation (T+0 to T+2:49):
All 33 Raptor engines ignited, propelling the stack through max Q without issues. Hot-staging occurred as planned, with Ship 38's engines firing before separation.
Booster Return (T+2:49 to T+6:50):
The landing burn tested a new sequence, igniting 13 engines, reducing to five for divert, then three for hover, before shutdown and a soft splashdown in the Gulf of Mexico. This configuration enhances redundancy for Block 3 boosters.
Ship Coast and Operations (T+6:50 to T+47:04):
Ship 38 reached space and successfully deployed the eight simulators, demonstrating payload handling for future Starlink missions.
A single Raptor engine relit in vacuum, validating propulsion for orbital refueling.
Real-time video was transmitted via onboard Starlink terminals throughout the coast phase.
Reentry and Splashdown (T+47:04 to T+1:06:25):
During reentry, Ship 38 performed a banking maneuver to simulate return-to-launch-site guidance, testing subsonic control algorithms.
Despite intentional tile omissions on the starboard side, the vehicle maintained integrity through plasma buildup and executed a flip maneuver, igniting engines for a controlled splashdown in the Indian Ocean.
The entire test lasted approximately one hour, with telemetry confirming success across all goals.
Significance of the Test
Flight 11 provided critical data on heat shield performance in degraded states, engine relight reliability, and enhanced landing sequences.
As the tenth launch from Pad 1, this test concludes operations there, where the pad endured early damages from Flight 1 but enabled key milestones like tower catches in Flights 5, 7, and 8.
It also wraps Block 2 development, which saw progressive improvements from explosive early tests to routine reusability demonstrations.
Transition to Block 3 and Future Infrastructure
With Block 2 complete, SpaceX is ramping up production of Block 3 (V3) vehicles, incorporating lessons from this flight, such as the multi-engine landing burn for better control.
V3 features upgraded Raptor 3 engines, larger structures, and enhanced capabilities for orbital missions, potentially enabling Mars trajectories. Multiple V3 prototypes are under construction at Starbase.
Pad 1 will undergo modifications, including a flame trench and a new mount, while Pad 2 assumes primary operations to support higher cadence.
A new automated heat shield tile "bakery" in Florida is operational, capable of producing thousands of tiles daily to equip the expanding fleet.
These advancements aim to accelerate testing, with suborbital hops, orbital flights, and refueling demos expected soon, paving the way for NASA's Artemis missions and beyond.