POGO: The 63-Year-Old Problem Threatening Starship's Success [4K]

Episode Description: An investigation into the POGO Phenomenon which is responsible for the destruction of Starship 2.0 on two most recent test flights. What is causing this issue? Why was it not able to be detected during pre-flight testing. What can we learn from historical examples of NASA's experience with POGO over the past 63 years? And what is the most likely path that SpaceX will take to Suppress POGO Oscillations being generated by the Raptor Engines? Produced by: @DeffGeff _________________________________________________ Products featured in this episode: CSI Starbase Merch Store: Discount code: TemporaryDowngrade Starship 3D Printed Models: Starbase Sim VIdeo Game: Raptor 3 Hex Tile Painting: __________________________________________________ Please consider supporting CSI Starbase on: Patreon: Youtube: ___________________________________________________ Technical Resources: The Ring Watchers - Starship 2.0 Articles: Geoff Martin - Modes on a string: Steve Mould - A better description of resonance: Eager Space - Pogo - Rockets Behaving Badly: The Space Engineer - Reconstructing Starship's Breakup: ___________________________________________________ Huge thanks to the team of 3D Forensics Agents who make all of this possible! Highbay & CSI Headquarters Renders @Lolomatico3d, @Benedikt_3D, and @2legit2quit3d Starship 2.0 Propulsion Systems Renders: @ChameleonCircuit, @Ringwatchers Flight 7 & 8 Animations :@mcrs987 Starbase Sim Video Game: @StarbaseSim Prop Loading Animation: @C_Bass3d Various animations: @RyanHansenSpace Content Creators Feature In This Investigation: Starship Gazer - @StarshipGazer Carlos Nunez - @cnunezimages Cosmic Perspective @CosmicPerspective The Everyday Astronaut - @Erdayastronaut LabPadre - @LabPadre NASASpaceflight - @NASASpaceflight RGVAerialPhotography - @RGVaerialphotos Randolph Visuals - @CosmicalChief

Timestamps 0:00 Intro 4:35 What is harmonic resonance 9:45 POGO - What is it? 14:09 POGO - Important contributing factors 16:13 POGO - Why it matters 19:04 V2 Ship Introduction 21:14 V2 Propellant Capacity 21:40 V2 RVac Downcomers 27:45 V2 Vacuum Jacketed Pipes 32:51 Flight 7 Review 38:31 Mode of Failure 42:19 Flight 8 Upgrades 43:04 Flight 8 Review 49:48 Falcon 9 Comparison 52:52 Static Fire Test Limitations 54:59 Possible Solutions For Long Duration Test 57:16 Starships Are Meant To Fly 1:00:00 Bandaid Solutions 1:02:40 Historical Examples - Titan II 1:07:54 Historical Examples - Saturn V 1:12:58 Historical Examples - Space Shuttle 1:15:26 Falcon 9 POGO Suppression 1:19:01 Is Starship V2 doomed? 1:19:33 Option 1 1:22:09 Option 2 1:26:37 Temporary Avoidance 1:30:05 Outro

forgot to ask if you were satisfied with this or nah.

Amazing. Smart. Engaging. This has to be the best Spacex related production to date. Astro award worthy. You need to work on those tears though. Not quite Oscar worthy. 🤣

used 1/4 of a bottle of eye drops trying to get that scene right.

This is one of the best rocket-related videos I've ever watched. I can't imagine the effort involved in the research, scripting, visuals, etc. Incredible work, anyone with any interest in rocketry or engineering should watch it and the rest of Zack's videos.

Posted on NSF.

Nice! I must have missed that

Amazing episode Zack! You’re killing it .

I watched the episode and as usual it's exceptionally rigorous and well done, but doesn't really address how we KNOW with certainty that it's pogo oscillations causing the damage. How do we know it's longitudinal and not eg. transverse resonance in the downcomers?

It does address that. I said "This speculation is based on incomplete information" in other words we don't know anything with certainty