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SpaceX Starship Flight 9 Update - IFT9 News and Technical Information · Elon Musk Podcast

• 0:00
  What are the key engineering upgrades being tested on
• 0:03
  Starship flight number 9, and how will this mission validate
• 0:07
  the vehicle's ability to survive reentry and relight engines
• 0:11
  while it's in space? Also, why is SpaceX choosing to
• 0:14
  skip a tower catch this time around?
• 0:20
  While SpaceX Starship Flight 9 is designed to isolate core
• 0:23
  vehicle capabilities, stress test upgraded systems, and
• 0:27
  gather flight data critical to proving Starship's long term
• 0:31
  reliability, the mission will not attempt to catch the
• 0:34
  booster, nor will it carry a major payload.
• 0:37
  Instead, it's a tightly scoped engineering test which is built
• 0:41
  around refining core systems, engine reusability in space,
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  ignition, structural durability during re entry, and flight
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  computer performance under stress.
• 0:51
  The ship and the booster assigned to Flight 9 both
• 0:54
  include major hardware upgrades over previous flights.
• 0:58
  Booster #14 The lower stage features 33 Raptor engines, 29
• 1:03
  of which are flight proven from earlier missions.
• 1:06
  Some are flying for a third time.
• 1:08
  This is the highest number of reused engines the SpaceX has
• 1:11
  flown on a Starship booster, and the goal is to evaluate the
• 1:15
  durability of engines after multiple cycles through launch,
• 1:20
  shut down, refurbishment and relaunch.
• 1:23
  Now Flight 9 will measure how reused Raptors perform in a full
• 1:27
  pressure, full duration ascent scenario.
• 1:31
  Flight 9 will not attempt a tower catch with its booster.
• 1:34
  Instead, the plan is for Booster 14 to perform a controlled
• 1:38
  landing in the ocean, and this shift allows engineers to focus
• 1:41
  on in flight behavior without introducing the variables of
• 1:46
  tower interactions. Now, by targeting a sea
• 1:48
  splashdown, the team can monitor engine vectoring, structural
• 1:52
  stress on descent and landing stability without risking ground
• 1:56
  infrastructure. It's a deliberate simplification
• 2:00
  of Mission Profile 1, aimed at validating key systems in
• 2:04
  isolation. On the upper stage, major
• 2:06
  changes have been implemented in the propulsion section.
• 2:10
  The Vacuum Raptors, which fails during Flight 8, now sit in a
• 2:14
  redesigned engine Bay. The plumbing and fuel delivery
• 2:18
  systems were overhauled to eliminate combustion instability
• 2:22
  caused by pressure fluctuations and also flow disruption.
• 2:27
  Engine gimbals were mounted with enhanced vibration isolation and
• 2:31
  new pressure management redundancies were added to
• 2:34
  reduce resonance during throttle transitions.
• 2:38
  Now, these updates target the same failure mode that led to
• 2:42
  the upper stages structural loss in the previous test.
• 2:45
  But the approach here isn't patchwork, its structural
• 2:49
  redesign, and one of the most anticipated objectives for
• 2:53
  Flight 9 is the successful reignition of a Raptor vacuum
• 2:56
  engine in space. This hasn't been accomplished
• 2:59
  since all the way back in Flight 6 and later tests failed to
• 3:02
  demonstrate reliable restart conditions either due to sensor
• 3:06
  issues, fuel floor inconsistencies, or software
• 3:09
  aborts. SpaceX needs to master this move
• 3:12
  to support orbital refueling, return to launch site burns, and
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  also deep space missions. And on this flight, the upper
• 3:19
  stage will attempt a coast followed by an initial attempt
• 3:23
  to simulate in space maneuvering scenarios.
• 3:26
  And thermal protection has been another huge area of focus.
• 3:32
  The new heat shield on the Flight 9 upper stage includes
• 3:35
  upgraded tile mounting systems designed to handle the high
• 3:39
  thermal expansion and the dynamic pressure of ascent and
• 3:44
  re entry. Now, during earlier flights,
• 3:46
  sensors recorded uneven heat loads and tile detachment during
• 3:51
  descent. To counter this, engineers
• 3:54
  modified both the tile attachment brackets and the gap
• 3:57
  filler materials to reduce flex points and also improve thermal
• 4:02
  tolerance. These improvements are expected
• 4:04
  to increase survival rates through re entry and one of the
• 4:08
  highest risk phases for this vehicle.
• 4:11
  Aerodynamics and structural load control are also being tested
• 4:14
  through a redesigned flap system.
• 4:16
  The flaps on Flight 9 are smaller, thinner and mounted
• 4:20
  closer to the nose of the vehicle.
• 4:22
  The new position is meant to improve control authority during
• 4:26
  atmospheric descent and reduce the heat exposure that damaged
• 4:30
  previous configurations. Reinforcements in the AF
• 4:34
  fuselage aim to handle greater re entry stress, particularly in
• 4:39
  the moments preceding the final landing burn and Flight 9 will
• 4:43
  serve as a real world test of a new avionics architecture as
• 4:47
  well. Triply redundant flight
• 4:49
  computers installed for the first time in this configuration
• 4:52
  are designed to process critical flight inputs in parallel,
• 4:56
  allowing for more responsive corrections if anything deviates
• 5:00
  from the planned profile, and the system is built to continue
• 5:03
  operating through single point failures with real time cross
• 5:08
  checks across subsystems. This is the kind of reliability
• 5:11
  baseline the SpaceX needs if it ever wants to certify Starship
• 5:16
  for crude flights in the future. Upgraded telemetry and sensor
• 5:20
  arrays have been installed across structural joints and
• 5:23
  pressure critical systems. These allow high frequency data
• 5:27
  transmission and more granular monitoring of stress conditions.
• 5:31
  In Flight 8, data gaps appeared during key moments of ascent,
• 5:35
  limiting Spacex's ability to assess what was happening as the
• 5:39
  failure processed. Now Flight 9's new Comstack,
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  using more resilient hardware and also hardened software
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  protocols, aims to prevent those dropouts and deliver a complete
• 5:52
  mission data set. And the mission plan also
• 5:55
  includes a test of improved propellant management in the
• 5:59
  upper stage. With larger tanks now installed,
• 6:02
  managing fuel stability during coast phases and acceleration
• 6:05
  becomes way more complex. The new sub tank systems inside
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  Flight 9's upper stage incorporate baffles and
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  reoriented feed lines meant to counter sloshing and bubble
• 6:17
  formation, both of which can compromise engine restart
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  reliability and also thrust balance.
• 6:23
  SpaceX has also refined the stage separation mechanism
• 6:27
  between the booster and the upper stage.
• 6:29
  Previous telemetry hinted at inconsistent detachment focuses,
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  likely due to uneven pyrotechnic sequencing and aerodynamic drag.
• 6:39
  Flight 9 features a redesigned separation system with altered
• 6:43
  bolt placement, stronger structural interfaces in a
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  modified pusher plate. These updates should allow a
• 6:51
  cleaner and a more reliable disengagement between stages,
• 6:55
  which is critical for both booster return trajectory and
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  also upper stage ignition timing.
• 7:01
  Now the flight trajectory itself is different from previous
• 7:04
  missions. Flight 9 will allow a more
• 7:06
  lofted profile, gaining additional altitude before
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  initiating its descent arc. This modified path serves 2
• 7:13
  purposes, provides A wider margin for testing upper stage
• 7:18
  coast and also relay phases, and it shifts potential debris zones
• 7:22
  further from populated areas. It also offers a controlled test
• 7:27
  of cross range descent performance, something that will
• 7:30
  become more important as the system matures towards orbital
• 7:35
  operations. Flight 9 is being used as a
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  proving ground for new ground infrastructure as well.
• 7:41
  The tank farm and water deluge system at Starbase have been
• 7:44
  upgraded to support more aggressive launch cadences and
• 7:48
  higher engine loads. And by testing these systems
• 7:51
  during this flight, SpaceX can prepare for a schedule with
• 7:55
  shorter turn around times and also higher thermal output, both
• 7:59
  of which will be required when larger payloads and operational
• 8:03
  Starlink launches begin. Though it will not carry
• 8:06
  satellites or attempt to payload deployment, Flight 9 is a
• 8:09
  required step towards mission successes that do.
• 8:13
  Success in this test builds the reliability record that SpaceX
• 8:16
  needs to secure regulatory approval for commercial
• 8:19
  operations. More importantly, it
• 8:21
  demonstrates that Starship's foundational Systems Propulsion
• 8:26
  re entry avionics flight software can handle the core
• 8:30
  tasks needed for any functional launch vehicle.
• 8:33
  And Flight 9 also sets up future tests like ship catching
• 8:37
  maneuvers and orbital refuelling, which will follow in
• 8:41
  later flights. And by isolating variables in
• 8:43
  this one test, engineers can pinpoint exactly how well each
• 8:47
  system performs without the interference of other mission
• 8:51
  goals. This makes the data more
• 8:52
  valuable and the conclusions more actionable.
• 8:56
  Now, Flight 9 is not a high profile media vent or a
• 9:00
  milestone launch with passengers or major hardware on board.
• 9:04
  It's an engineering test, focused and deliberate, meant to
• 9:08
  validate corrections made after prior problems.
• 9:12
  Every change on this vehicle answers a specific failure point
• 9:15
  observed earlier. The entire point is to avoid
• 9:18
  repeating the same mistake twice.
• 9:21
  Now I want to know what you think is going to happen during
• 9:23
  Flight 9. Will they fail again?
• 9:26
  Will flight 9's upper stage blow up again?
• 9:30
  Or will the booster somehow explode during launch or return?
• 9:36
  I I don't know. We'll see.
• 9:39
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• 9:41
  10 more years of my time. Hit the sub button.
• 9:45
  That's all I ask from you. I've been doing this for about 5
• 9:48
  years now. I don't intend to quit. 10 more
• 9:51
  years is what you're going to get from me if you take one
• 9:54
  second and hit the subscribe button.
• 9:56
  Thank you so much for your time today and I'll see you in the
• 9:59
  next one.