Timeline of a car crash.

Mopar_Korean · Post by **Mopar_Korean** » Thu Apr 30, 2009 9:15 pm

Crazy how it happens SO fast.

http://www.lonegunman.co.uk/2009/02/23/ ... car-crash/

In designing the Falcon XT, Ford engineers set out to discover the anatomy of a car crash and found that the accident is typically over before we’re even consciously aware of it happening.

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.

Sykora · Post by **Sykora** » Thu Apr 30, 2009 10:00 pm

220 ms - car's automated slurpy machine kicks in.

wacko · Post by **wacko** » Thu Apr 30, 2009 10:54 pm

this is just for new cars what about me and jetas with no air bags ahhh

hansken_yo · Post by **hansken_yo** » Thu Apr 30, 2009 11:22 pm

See... when I got rear ended in my 98 highline, I knew it was happening before it actually happened. The timeline was sort of in reverse... However, it was interesting nonetheless.

GreeNeons03 · Post by **GreeNeons03** » Thu Apr 30, 2009 11:55 pm

Sykora wrote:220 ms - car's automated slurpy machine kicks in.

225.5 ms - Slurpy completely served and in driver's hand.

230 ms - Driver enjoys slurpy while PS3 Boots up

Sykora · Post by **Sykora** » Fri May 01, 2009 12:32 am

GreeNeons03 wrote:
Sykora wrote:220 ms - car's automated slurpy machine kicks in.
225.5 ms - Slurpy completely served and in driver's hand.

230 ms - Driver enjoys slurpy while PS3 Boots up

LOL

DoubtedNeon · Post by **DoubtedNeon** » Fri May 01, 2009 12:38 am

lol a serious thread gone awry!

jetas · Post by **jetas** » Fri May 01, 2009 1:11 am

wacko wrote:this is just for new cars what about me and jetas with no air bags ahhh

Were fuckin screwed.

rOniN · Post by **rOniN** » Fri May 01, 2009 2:23 am

I would love to get a car that had the slurpy machine in it for accidents. Would keep me happy afterwards so I wouldn't beat the heck out of someone

And hopefully the PS3 has GTA4 in it so I could use the X button as well

Very interesting stuff...good thing computers are helping out!

srtjesse · Post by **srtjesse** » Fri May 01, 2009 3:04 am

haha you guys are fukin idiots haha slurpy this thread horribly when lol bad

GreeNeons03 · Post by **GreeNeons03** » Fri May 01, 2009 7:11 am

I was waiting for someone to continue it from 230 ms. lol

moparman00 · Post by **moparman00** » Fri May 01, 2009 10:11 am

235 ms, Drivers Automatic Bowel Evacuation system engages...

Haganracing · Post by **Haganracing** » Fri May 01, 2009 1:58 pm