SpaceX Starship Flight Test 8: Analysis of Unforeseen Challenges
0:00:06 Introduction: The video discusses SpaceX's Starship and Super Heavy flight test number eight, which did not go as planned, similar to the prior flight (flight 7).
0:00:40 Starship V2: This was the maiden voyage of the V2 Starship, featuring modifications in heat shields, internal tankage, and plumbing.
0:01:08 Launch & Ascent: The initial launch was flawless, with a spectacular liftoff. The booster pitched over to position Starship correctly.
0:01:42 Engine Shutdown Sequence: Two engines failed to relight during the booster's return, a recurrence from a previous flight, but not critical.
0:02:16 Second Stage Ignition: All six engines on the second stage ignited successfully.
0:02:35 Critical Camera View: A camera inside the booster's skirt provides key insights into the subsequent failure.
0:02:46 Engine Configuration: Visuals show two vacuum Raptors and three sea-level Raptors, with a visible "Mach diamond" effect due to pressure interaction.
0:03:13 Booster Return: The booster shuts down its engines, performs a boost back burn, and begins its descent.
0:03:25 Hot Staging Ring: The hot staging ring is jettisoned, and gas is blown through the engines, likely for spacecraft separation.
0:04:01 Engine Pre-Landing Prep: The engines are being prepared for landing, including running through chill down.
0:04:05 Gas Venting: Gas, which is vented through the engine for preparation, is seen burning as it interacts with the atmosphere; This is expected.
0:05:00 Successful Booster Landing: The booster performs a successful landing, with the tower arms adjusting to account for translational errors.
0:05:42 Starship Anomaly: A red glow and fire are observed inside the Starship's skirt, primarily near a vacuum Raptor at the 2 o'clock position, reminiscent of flight seven's issue.
0:05:46 Engine Fire: A fire leads to a critical engine shutdown of a raptor, then the others, causing the Starship to spin uncontrollably due to off-center thrust from the remaining engines.
0:06:30 Fuel Sloshing: The spinning causes fuel sloshing, impacting propellant sensors and feed lines.
0:07:03 Loss of Control & Altitude: The Starship loses control and altitude, eventually falling outside the launch corridor.
0:07:24 Downrange Observations: Footage from downrange captures a series of failures and a rotating debris cloud.
0:08:06 Air Traffic Control (ATC) Response: ATC reroutes air traffic due to the debris event, demonstrating the scale of the incident.
0:08:41 Satellite Imagery: Satellite imagery (GOES-18) captures the exhaust plume and boost back, confirming the event.
0:09:35 Weather Radar: Weather radar from the Bahamas also shows the effects.
0:09:41 Questions and Analysis: The video raises questions about the root cause of the fire, its relation to previous issues, and the timing of signal loss.
0:10:30 Flight Termination System: The flight termination system was likely still active and may have triggered during descent.
0:11:05 Debris and Breakup: Ground observations suggest potential structural breakup, possibly due to centrifugal forces from the spin.
0:11:26 Comparison to Booster 7 Failure: The video questions whether this is the same issue that caused booster number seven's failure.
0:11:48 Suspected cause: They added fire suppression but it may have not been good enough. It could be related to multiple downcomers that are now in the design, creating more places for harmonics to build up.
0:12:30 SpaceX Investigation: SpaceX engineers will investigate, possessing more data and footage, including potentially sensitive camera angles.
0:13:31 Future Steps: The video speculates on potential design changes, flight profile adjustments, and the timing of the next flight.
0:14:36 Final Remarks: A comment on the project, and a signature sign-off by Scott Manley ("fly safe").