G-Force, Jerk, and Passing Out In A Centrifuge

  • Published on Apr 16, 2018
  • Thanks to the Starrship team for arranging this! I'm also over on their channel, flying with the Blades: tvclip.biz/video/iWY3-1gOrxk/video.html • At the Royal Air Force training centrifuge in Farnbrough, pilots learn how to avoid G-LOC: g-induced loss of consciousness. Let's talk about g-force, about jerk, and about how to keep circulation flowing to your brain.
    * Isn't 3.6g a really low g-tolerance? *
    Yep. Turns out I would not qualify to be a fighter pilot. The average range for g-tolerance is 4-6; no-one was expecting me to pass out. The centrifuge team do not deliberately try to G-LOC people! To be fair, though, I'd done a few earlier runs with only minor effects.
    * What g was the RAF person at the start pulling? *
    That's Marcus, from the Starrship team, and he was successfully pulling 6.5g with the help of g-trousers: they plug into a compressed air source in the plane (and in the centrifuge) and act as a lower-body tourniquet to keep the blood up top. They are very effective.
    * Why did you shake and shudder when regaining consciousness? *
    Those are called "myoclonic convulsions", which is a fancy medical term for "muscle jerks", and they're a common side effect of recovering from G-LOC.
    * What did it feel like? *
    I'll answer this in more detail in a video over on the Matt and Tom channel soon, but in short: I don't remember it. I was doing the breathing maneuver, then everything was wobbly, then we were stopped!
    * Is this a sponsored video? *
    No: the RAF and Starrship had no editorial control over this, and no money changed hands. Obviously, though, they gave me a spin in the centrifuge, and I'm collaborating with them over on their channel too!

    The RAF Centre of Aviation Medicine, the Starrship team, and the folks at Qinetiq.
    Instagram: instagram.com/starrshiphope/
    Facebook: facebook.com/starrshiphope/
    Twitter: twitter.com/starrshiphope

    I'm at tomscott.com
    on Twitter at twitter.com/tomscott
    on Facebook at facebook.com/tomscott
    and on Snapchat and Instagram as tomscottgo

Comments • 2 135

  • Tom Scott
    Tom Scott  Year ago +2138

    If you have questions (what did it feel like? why did you convulse? isn't 3.6g a really low tolerance?) pull down the description, I've answered a few there! And if you see someone ask a question that's in the description, please point them there.

    • James Edwards
      James Edwards Month ago

      That looks so fun!!!! How much does it cost too have a go?

    • Free Speech
      Free Speech Month ago

      THERE IS NO CENTRIPETAL FORCE. If there is a force you should feel it. The people in orbiting(circling) frame will feel the force. Observer do not feel that force. But thinking everything circling...even if you attach pendulum...it will hang there. There is a fight between gravity and centrifugal force. higher speed it will match the circle. if it string gets cuts it will be thrown out. it shows that there is centrifugal force.

    • Fat Ass
      Fat Ass Month ago

      Free Speech Just saw this. LMFAO!!!

    • Free Speech
      Free Speech Month ago +1

      His poop all over the wall . thrown out. Centrifugal force in action. Not centripetal.

    • L T Mundy
      L T Mundy 4 months ago

      +A Totally Ordinary Aubergine: No. But you might suffer ICP (intercranial pressure) induced cerebral trauma or menengial tears/bruising.

  • suev33 3
    suev33 3 11 hours ago

    I'm getting nauseous just watching that thing spin....yikes

  • Zëbäz Tiiän
    Zëbäz Tiiän 3 days ago

    Lazlo doing 9Gs as a joke: I do 4Gs while having my breakfast.

  • Saul Goodman
    Saul Goodman 4 days ago +14

    3:30 when her head game is too good

  • Benedict Earnest
    Benedict Earnest 6 days ago


  • jfcc9086
    jfcc9086 7 days ago

    And I think I know everything... Thank you. I didnt think or know about rate of acceleration as a factor and that untill you try it you do not know your tolerence. 3.6? I dont know about extreme theme park rides. Id guess 2.5. 3.6 is good enough for me! I beleive a RCAF pilot can do 7g and sees B/W with complete suit, on the edge with 3 years training. Fair enough! Kuddos!

  • Bobby Brady
    Bobby Brady 8 days ago

    I did 9Gs multiple times in an F-16 while dogfighting another F-16. Fun stuff.

    • Fuck Off
      Fuck Off 5 days ago +1

      You should believe everything you see in the Internet.
      -Abraham Lincoln

  • Mr Robbari
    Mr Robbari 9 days ago


  • Jonas Barkauskas
    Jonas Barkauskas 9 days ago

    For Vegeta its a joke

  • george
    george 10 days ago

    G wank

  • 1000000XP
    1000000XP 11 days ago


  • Alan Kiedrowski
    Alan Kiedrowski 12 days ago

    tom.exe has stopped responding

  • JakulaithWolff
    JakulaithWolff 13 days ago +1


  • Adrian Wilkerson
    Adrian Wilkerson 13 days ago

    Do they get dizzy

  • Peyton Griffin
    Peyton Griffin 13 days ago

    WE didn't evolve at all

  • Phaser Gim
    Phaser Gim 14 days ago

    Heh G force jerk

  • Noam Chomsky
    Noam Chomsky 14 days ago

    Bonnie could get it

  • Roberto Gonzalez
    Roberto Gonzalez 14 days ago +1

    3:35 me waking up after a dream about dying

  • Iquzar Hosein
    Iquzar Hosein 15 days ago

    God is the greatest why you all have to go through all of this I think this is wasting money give it to poor people

  • PerplexZ
    PerplexZ 15 days ago

    i cant see, *ah*

  • Big Solid Boss
    Big Solid Boss 16 days ago


  • jrag1000
    jrag1000 17 days ago

    Well, we know how to shut down a human.

  • Josh23761
    Josh23761 17 days ago

    Jerk can also be referred to as thrust then?

  • LO L
    LO L 18 days ago

    This is making me dizzy is turning to much

  • Surrinder J
    Surrinder J 20 days ago

    Try doing again but this time keep a straight face!! Now that's a challenge!
    Peace ✌️ out people

  • Ok Ma Name Bread
    Ok Ma Name Bread 20 days ago

    3:27 How I feel with a stock pilot in warthunder

  • Arctic Wolf Official
    Arctic Wolf Official 21 day ago +3

    Just watching this is making me lose my breath

  • julien23 lastchristmas
    julien23 lastchristmas 21 day ago +1

    You cant breath or what sensation exactly ?

  • nathan sharkboi
    nathan sharkboi 21 day ago

    Haha look at that face

  • Jaecht88
    Jaecht88 21 day ago

    So there was no better place for an office than in the middle of the centrifuge?!

  • Road Runner
    Road Runner 22 days ago

    I'd love to have a go on that :D

  • Kai Cremer
    Kai Cremer 23 days ago


    AA APIP CHANNEL 23 days ago

    Kalo kata orang sunda mah ini namanya ngalenyap

  • Mariagracia Valdivieso


  • pentolp
    pentolp 23 days ago +2

    I can't quite see

  • Leader success !
    Leader success ! 25 days ago

    Who else thought this was about some guy passing out while jerking off ?😆

  • Robert Ortiz
    Robert Ortiz 25 days ago

    So what about the people who were subjected to this g force against their will? There are plenty of pedophiles, rapists murders that can finally contribute to humanity in a positive way.

  • John Sanabria
    John Sanabria 26 days ago

    so when a plane flies from the sky ppl are dead going down

  • amarsbarr
    amarsbarr 26 days ago

    Does this remind anyone of Moonraker?

  • Pakorn Wattanavrangkul
    Pakorn Wattanavrangkul 27 days ago +1

    The anti G string maneuver you say?

  • boring wolf
    boring wolf 27 days ago

    I think his lips lost concussions for a second.

  • get high
    get high 27 days ago +1

    the silver star in Europapark has 4.0 G but just for a couple seconds imagine you would have to sustain that for a minute

  • Chris Grothe
    Chris Grothe 27 days ago

    I'm a G unit.

  • MajWay
    MajWay 28 days ago

    *B L I M E Y*

  • Royal Killer
    Royal Killer 28 days ago

    cod zombies ascension anyone???

  • BakerStreet
    BakerStreet 28 days ago +2

    3:36 When you're jerking off and you can't control what's coming out: "Blimey! I lost everything there"

  • Addam Robin
    Addam Robin 29 days ago

    Have people had a stroke in one of these?

  • Matthew gaming And logs


  • Spanky Harland
    Spanky Harland 29 days ago

    you should use the restroom before you participate in the centrifuge spin around.

  • 32ways
    32ways Month ago

    *jerk* 😏

  • Plan B Cool
    Plan B Cool Month ago

    Thumbnail's like Yogi Bear in the middle of hibernation.

  • Ethan Conroy
    Ethan Conroy Month ago

    You may have used a centrifuge, but have you ever ridden the gravitron at the carnival?

  • Kiki Tay
    Kiki Tay Month ago +3

    3:36min - It's exactly what I do when I pee also..

  • Lleon Ellus
    Lleon Ellus Month ago +1


  • AnimeT0getherEU
    AnimeT0getherEU Month ago

    That looked so funny.

  • Mr Happy
    Mr Happy Month ago

    You passed out at 3gs? Seems like some lifestyle choices need to be made...

  • Nobody Famous
    Nobody Famous Month ago

    wait a second a 40 year old chain smoker did great on this *cough* Jeremy Clarkson

  • J H Spain.
    J H Spain. Month ago

    I can't stand hearing the word evolve if you believe this s*** you'll believe anything

  • Dennis Ovahn
    Dennis Ovahn Month ago

    I blacked out from the introductory speel and missed the guts of it, still failing to stay awake but continuing my conditioning....hopefully will see what jerk does soon.

  • Erik Dominguez
    Erik Dominguez Month ago

    3:27 is what your here for.

  • Good taste
    Good taste Month ago

    3:30 when you play dead during a school shooting!


  • Alco Golic
    Alco Golic Month ago

    i wanna go on this.

  • Lucas Liew
    Lucas Liew Month ago

    Snap, crackle & pop.

  • Orksom
    Orksom Month ago

    3:26 me watching tik tok

  • Life Soldier
    Life Soldier Month ago

    Such a jerk >:C

  • Matticus Jenkins
    Matticus Jenkins Month ago

    3:32 ultimate orgasm face

  • Raffle Steals
    Raffle Steals Month ago

    Thumbnail: real photo of me nutting

  • Nicholas Socha
    Nicholas Socha Month ago +3

    Before the big exam: 1:50 to 2:05 during it 3:41 after it 3:42 BLIMEY

  • Crom Devoter
    Crom Devoter Month ago +1

    After no fap 3:32

  • Dee
    Dee Month ago

    want to try

  • Avedis Tchamitchian

    Me when my girlfriend is telling me her daily stories 3:34

  • Avedis Tchamitchian

    Me in a history class 3:34

  • Bennett Neo
    Bennett Neo Month ago

    Looks like he's having orgasm

  • Roderick storey
    Roderick storey Month ago

    Low key third degree gurns in the thumbnail

  • Cliff Wade
    Cliff Wade Month ago

    This was awesome

  • Zesty MX
    Zesty MX Month ago

    *B L I M E Y*

  • Cyk
    Cyk Month ago

    I'll watch the video tomorrow morning. Right now, I just wanted to say I'm here because this thumbnail is the most epic I've seen in a while.

  • yco67
    yco67 Month ago

    you should ve hold your breathe not dump it..

  • daliOtter
    daliOtter Month ago

    only 3.6 g's, that seems a little low to be passing out :)

  • JT Bros
    JT Bros Month ago

    at least it wasnt clickbait

  • Jadez
    Jadez Month ago

    3:30 when I nut from mad head

  • Stor Bokki
    Stor Bokki Month ago

    The thumbnail for this video looked like your face had been ripped off by an animal and a surgeon had sewn a replacement on from a cadaver, and it wasn't taking very well.

  • zzpza
    zzpza Month ago

    Just came here from the video of the guy doing 9g for 30s and chatting at the same time.

  • Olive Juice
    Olive Juice Month ago

    Literally 30 seconds in and my anxiety is peaking.

  • Rambo K.E.M Strike King


  • Kaio Alberth
    Kaio Alberth Month ago +24

    *arrives at heaven* 🇧 🇱 🇮 🇲 🇪 🇾

    • Kaio Alberth
      Kaio Alberth 4 days ago

      +Önder 🇾 🇴 🇺
      🇲 🇪 🇦 🇳
      🇱 🇮 🇰 🇪
      🇹 🇭 🇮 🇸 ?
      With stylish text and name app

    • Boi wot
      Boi wot 5 days ago

      +Önder *L* *I* *K* *E* *T* *H* *I* *S*

    • Önder
      Önder 5 days ago +1

      How do you make the text like that?

  • Better than You
    Better than You Month ago


  • L Faker son
    L Faker son Month ago

    JERK (gets demonetized)

  • Senzu Daddy
    Senzu Daddy Month ago

    Is g force that samr feeling when u do a loopty loop on a rollercoaster then u feel light headed

  • Kadajliger100
    Kadajliger100 Month ago

    Thank you for doing this Tom, your videos are a blast & you put yourself out there and your body on the line for science & fascination & we love you for it!!

  • I'll Be In The Car
    I'll Be In The Car Month ago

    I think you need an editor understood is the wrong tense you should have said understand

  • Irinel Gavaol
    Irinel Gavaol Month ago

    3:54 Ricky Gervais?

  • 🎑
    🎑 Month ago

    Do the instructors not get dizzy?

  • Zachary June
    Zachary June Month ago


  • Dhawal Kumar
    Dhawal Kumar Month ago +3

    I thought the title meant jerk passing out due to gforce

  • Southside Lakeshow 13
    Southside Lakeshow 13 Month ago +1

    There’s roller coasters at Magic Mountain here in Los Angeles that easily go over 4-5 Gs. Are you telling me this dude would pass out on Revolution? The weakest ride there. BLIMEY! 😂

    • User100
      User100 Month ago

      No rollercoaster sustains 4-5G for any sort of reasonable time, not even close. It's very very periodically, that's why loops are tear drop shaped. The only rollercoasters with high G and somewhat sustained are ones with perfectly circular loops, but those aren't common because of how much G you pull. There's also a massive difference between horizontal and vertical G force when it comes to affect on your body.
      On launch roller coasters it's horizontal that makes it a little difficult to breath, but it's the vertical G that will black out most people, but even then on launch coasters that go up 90 degrees after launch (like Kingda Ka at Great Adventure) it's only for a fraction of a second at maybe 4/ 4.5 G

  • rhys walden
    rhys walden Month ago

    Kids dont take drugs to get high just buy yourself one if these should give you a good feeling.

  • Ultra Gaming
    Ultra Gaming Month ago


  • b1rdkeeper S
    b1rdkeeper S Month ago

    Hilarious and informative