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Timeline of a Car Crash

Discussion in 'General Automotive' started by neontrail, May 3, 2009.

  1. May 3, 2009 at 2:39 PM
    #1
    neontrail

    neontrail [OP] ✈ ✈ ✈ ✈ ✈ ✈ ✈

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    :eek: One millisecond equals 1/1000th of a second.

    This is a reconstruction of a crash involving a stationary Ford Falcon XT sedan being struck in the driver’s door by another vehicle travelling at 50 km/h [30 mph].

    0 milliseconds - An external object touches the driver’s door.

    1 ms - The car’s door pressure sensor detects a pressure wave.

    2 ms - An acceleration sensor in the C-pillar behind the rear door also detects a crash event.

    2.5 ms - A sensor in the car’s centre detects crash vibrations.

    5 ms - Car’s crash computer checks for insignificant crash events, such as a shopping trolley impact or incidental contact. It is still working out the severity of the crash. Door intrusion structure begins to absorb energy.

    6.5 ms - Door pressure sensor registers peak pressures.

    7 ms - Crash computer confirms a serious crash and calculates its actions.

    8 ms - Computer sends a “fire” signal to side airbag. Meanwhile, B-pillar begins to crumple inwards and energy begins to transfer into cross-car load path beneath the occupant.

    8.5 ms - Side airbag system fires.

    15 ms - Roof begins to absorb part of the impact. Airbag bursts through seat foam and begins to fill.

    17 ms - Cross-car load path and structure under rear seat reach maximum load.
    Airbag covers occupant’s chest and begins to push the shoulder away from impact zone.

    20 ms - Door and B-pillar begin to push on front seat. Airbag begins to push occupant’s chest away from the impact.

    27 ms - Impact velocity has halved from 50 km/h to 23.5 km/h. A “pusher block” in the seat moves occupant’s pelvis away from impact zone. Airbag starts controlled deflation.

    30 ms - The Falcon has absorbed all crash energy. Airbag remains in place. For a brief moment, occupant experiences maximum force equal to 12 times the force of gravity.

    45 ms - Occupant and airbag move together with deforming side structure.

    50 ms - Crash computer unlocks car’s doors. Passenger safety cell begins to rebound, pushing doors away from occupant.

    70 ms - Airbag continues to deflate. Occupant moves back towards middle of car.
    Engineers classify crash as “complete”.

    150-300 ms - Occupant becomes aware of collision.

    Timeline of a Car Crash
     
  2. May 3, 2009 at 2:45 PM
    #2
    neslerrah

    neslerrah Who needs 4WD?

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  3. May 3, 2009 at 2:45 PM
    #3
    Brunes

    Brunes abides. Staff Member

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    12Gs...That's pretty sweet.

    Nice find- interesting to see how it all works out.
     
  4. May 3, 2009 at 2:50 PM
    #4
    Burgman

    Burgman I KEEEEEL YOU

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    had me an accident a few months ago in my gf escort, lady driving an altima decided to turn left as i went threw the intersection its a pretty amazing adrenaline rush no one was hurt i saw her coming but its cool to see how fast everything works
     
  5. May 3, 2009 at 2:57 PM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    350ms to 1 min. Occupant poops pants.
     
  6. May 3, 2009 at 3:06 PM
    #6
    fletch aka

    fletch aka www.BeLikeBrit.org

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    Pants air bag inflates..:crapstorm:
     
  7. May 3, 2009 at 4:06 PM
    #7
    Burgman

    Burgman I KEEEEEL YOU

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    diff no pooping of the pants for me
     
  8. May 3, 2009 at 5:29 PM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    I do have to admit.....I have been in quite a few accidents, and never pooped my pants. I DID manage to burn my ass with a cigarette once...
     
  9. May 3, 2009 at 5:31 PM
    #9
    Brunes

    Brunes abides. Staff Member

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    One accident....Zero shit in pants. My mom on the other hand...She might have-Not really sure.
     
  10. May 3, 2009 at 5:37 PM
    #10
    Burgman

    Burgman I KEEEEEL YOU

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    why so any accidents, maybe you shouldnt be on the road so much?

    thats not right, and its almost mothers day
     
  11. May 3, 2009 at 5:38 PM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Wow......Only one?


    I think I have had about 15 or so. Ages 16 to 24 were very busy for my insurance agent. I was good up till a couple years ago when I drove over the front of a Ford Explorer...........welll.........I backed over his hood......
     
  12. May 3, 2009 at 5:46 PM
    #12
    tigerfan00

    tigerfan00 BECAUSE INTERNETS!! Staff Member

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    ive only been in 1 collision...and i can honestly say...i did NOT shit my pants...

    i did get burned by the airbag deployment though
     
  13. May 3, 2009 at 5:49 PM
    #13
    Burgman

    Burgman I KEEEEEL YOU

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    that happened to me my hand was messed up for a few days
     
  14. May 3, 2009 at 5:50 PM
    #14
    tigerfan00

    tigerfan00 BECAUSE INTERNETS!! Staff Member

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    i didnt even spill my drink
     
  15. May 3, 2009 at 5:51 PM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Maybe your hand is well excorsised?
     
  16. May 3, 2009 at 5:54 PM
    #16
    tigerfan00

    tigerfan00 BECAUSE INTERNETS!! Staff Member

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    wait for it




























    are you ready?































    here it comes






































    [​IMG]
     
  17. May 3, 2009 at 5:55 PM
    #17
    tigerfan00

    tigerfan00 BECAUSE INTERNETS!! Staff Member

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    yeah...that just happened [​IMG]
     
  18. May 3, 2009 at 5:56 PM
    #18
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Lmao^^^^^^^^^^^
     
  19. May 3, 2009 at 5:56 PM
    #19
    Burgman

    Burgman I KEEEEEL YOU

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    license and registration meow
     
  20. May 3, 2009 at 5:58 PM
    #20
    tigerfan00

    tigerfan00 BECAUSE INTERNETS!! Staff Member

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    meow do ya see me eatin mice?
     
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