Enthalpy
1st December 2007 - 02:42 PM
Crash experts have ridiculed themselves at Villiers-le-Bel.
Remember: in this poor suburb of Paris, two young men die in a collision with a police car. Riots follow.
First explanation: the youngsters came from left side and impacted the police car.
Unfortunately, the police car is damaged at its front. Police and Justice tried to allege the car was damaged by rioters after the crash. Pity: the car was damaged only at its front, which was crushed inwards - impossible with human force - and a video emerges that proves the car was untouched.
This destroys a first false testimony. However, Justice hasn't got interested in the reasons for this false testimony.
Second explanation: the youngsters came from the front side at 70km/h and impacted the police car which drove at 40km/h.
Well, this sum of velocities would explain the deformation of the police car, yes.
BUT it certainly doesn't explain the absence of any significant deformation of the mini-motorbike. Imagine: the speed amounts to throwing the bike from 50m height - an not even the front wheel is damaged. Pictures at BBC.com for instance.
Again, the "expert" has said things not even he can believe. But the Justice is willing to accept such basic nonsense.
And by the way, I don't believe this mini-motorbike was able of carrying two people at 70km/h anyway. This shouldn't be difficult to check!
The only sound possibility I see is that the motorbike wasn't part of the accident.
By the way, I heard many times "motiver" before this event - a codeword secret services already used before the riots of 2005.
Enthalpy
3rd July 2008 - 08:27 PM
I didn't expect this anymore. One judge in France wasn't willing to believe the lies of the first expert. He found another expert, and surprisingly enough, this second expert dared to say that the mini-motorbike didn't arrive in front of the police car but from the side.
www.lemonde.fr/societe/article/2008/07/01/villiers-le-bel-la-parole-policiere-mise-en-cause_1064801_3224.html#ens_id=1064804
www.lepoint.fr/actualites-societe/villiers-le-bel-les-familles-des-victimes-demandent-un-complement/920/0/257090
Still no word about possible consequences for people who were sent to give false testimonies.
Even worse, the new expert has found that the police car accelerated from 5km/h to >64km/s one second before the impact. The two victims really had bad luck.
barakn
3rd July 2008 - 08:31 PM
QUOTE (Enthalpy+Jul 3 2008, 02:27 PM)
Even worse, the new expert has found that the police car accelerated from 5km/h to >64km/s one second before the impact. The two victims really had bad luck.
Bad luck to encounter a rocket-powered police car? I should say so.
rpenner
3rd July 2008 - 08:41 PM
As stated, the police car averaged over 6500 g's. Gendarme rémoulade!
Even correcting the figure to 64 km/h, that's 1.67+ g, which is not a normal maneuver.
//edit:
Going to the original, we have
http://www.lemonde.fr/societe/article/2008...#ens_id=1064804QUOTE
Dans la seconde qui a précédé le choc, l'expert a ainsi pu estimer que le véhicule était passé de 59 km/h à un peu plus de 64km/h sur les seize derniers mètres avant le choc.
Which gives us a much more reasonable acceleration of about 0.15+/-0.03 g.
http://www.google.com/search?q=what+is+%28...9%2F16m+in+g%3F
Enthalpy
3rd July 2008 - 08:56 PM
km/h, you are perfectly correct. 64km/s can't be obtained directly even by a rocket.
Know what? I had already written 5km/s and improved it to km/h, then put km/s on the next figure. Just an old habit to go to consistent units as soon as possible - and here it crashed, but without victims.
1.6g is a little too much for a car. The engine's power or inertia would deliver the necessary power at low speed, but the tyres' grip shouldn't allow over 1 or 1.2g; I suppose the lawyer simplified "1.79s" to "one second".
"Not a normal manoeuver"... At a rally start, it would be absolutely normal.
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