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25 Feb 2015, 21:56 (Ref:3509014) | #1 | |
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Similarity De Villota & Bianchi Marussia Accidents
The technical failure in Bianchi's accident
http://www.fia.com/news/accident-panel 7. During the 2 seconds Bianchi’s car was leaving the track and traversing the run-off area, he applied both throttle and brake together, using both feet. The FailSafe algorithm is designed to over-ride the throttle and cut the engine, but was inhibited by the Torque Coordinator, which controls the rear Brake-by-Wire system. Bianchi’s Marussia has a unique design of BBW, which proved to be incompatible with the FailSafe settings. 8. The fact that the FailSafe did not disqualify the engine torque requested by the driver may have affected the impact velocity; it has not been possible to reliably quantify this. However, it may be that Bianchi was distracted by what was happening and the fact that his front wheels had locked, and been unable to steer the car such that it missed the crane. Would seem to have been a direct repeat of what happened to Maria De Villota She sustained her injuries after her car "suddenly accelerated" into the back of the support lorry, according to witnesses. Marussia says it carried out a detailed analysis of the accident, and an external forensic investigation was also conducted. The results have been passed on to the Health and Safety Executive. http://www.bbc.com/sport/0/formula1/18854061 "BBC Cambridgeshire presenter Chris Mann, who witnessed the crash, said the car was slowing down when it "suddenly accelerated" into the back of the lorry" http://www.bbc.com/news/uk-england-c...shire-18685789 Last edited by wnut; 25 Feb 2015 at 22:13. |
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25 Feb 2015, 23:09 (Ref:3509029) | #2 | |
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Un likely but possible for the following reasons
Remember that the two systems are likely to be qyite different due to the much larger energy recovery of the 2014 car versus the old V8 powered one. Also the older car would not have featured brake by wire. It is the brake by wire torque coordinator that may have caused the problem in Bianchi's case, I very much doubt this was a feature of the earlier car. |
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