Matt Prior Posted February 2, 2001 Share Posted February 2, 2001 Okay, we all know Sevens generate lift at the front, whether on cycle or clamshell wings. So, given enough speed, lift will overcome weight, and the front end will become airborne. Anyone want to work out the Seven's take-off speed? Link to comment Share on other sites More sharing options...
R500 CYA Posted February 2, 2001 Share Posted February 2, 2001 The co-effecient of lift = 1/2 rho V2.S Didnt know how to work it out throughout all my flying exams, and that was based on something that was supposed to fly!! Think the answer might be C. or 42. Hope there are no more pilots on this forum!! Nick Edited by - Pinky on 2 Feb 2001 14:38:48 Link to comment Share on other sites More sharing options...
Red SLR Posted February 2, 2001 Share Posted February 2, 2001 I dont think that your 7 could produce the 500+ Kg of lift needed unless it was traveling at insane speeds. But - there was an accident is the USA last year where an air force tech guy strapped 2 solid fuel motors to his chevy. He then drove into the middle of a salt lake and lit the motors, a chared wreck was found several miles away and a few hundred feet up a cliff..... X777CAT Link to comment Share on other sites More sharing options...
R500 CYA Posted February 2, 2001 Share Posted February 2, 2001 Full details of Simon's story can be found at www.officialdarwinawards.com Link to comment Share on other sites More sharing options...
Number Six Posted February 2, 2001 Share Posted February 2, 2001 And what about the car (forget which) which "flipped" off the track last year. Andy Link to comment Share on other sites More sharing options...
Barry Posted February 2, 2001 Share Posted February 2, 2001 Andy, Are you referring to Peter Dumbreck's Mercedes at Le Mans? I believe that those Mercedes were considered unstable and the drivers had been told not to slipstream other cars too closely or this might happen. Link to comment Share on other sites More sharing options...
Number Six Posted February 2, 2001 Share Posted February 2, 2001 Yes Barry, that's the one, I thought it was Le Mans but wasn't 100%... I seem to recall a couple of F1 cars doing the same thing too but always as a result of some sort of jarring collision which let air get underneath. Ditto for US oval racing and "Bluebird". Andy Link to comment Share on other sites More sharing options...
Red SLR Posted February 3, 2001 Share Posted February 3, 2001 Darwin Awards, that is it. The former front-runner was the mystery owner of a jet-propelled Chevy Impala. The Arizona (USA) Highway Patrol came upon a pile of smoldering metal embedded in the side of a cliff rising above the road at the crest of a curve. Wreckage resembled that at an airplane crash, but it was a car--make and model unidentifiable at the scene. A lab figured out the story. It seems the driver had somehow gotten hold of a JATO unit (Jet Assisted Take Off--actually a solid fuel rocket) that's used to give heavy military transport planes an extra "push" taking off from short airfields. He drove his Chevy Impala out into the desert and found a long, straight stretch of road. Then he attached the JATO unit to his car, jumped in, got up some speed and fired off the jet device. The cops calculate that the driver of the car...hit JATO ignition at a distance of about 3 miles from the crash site. Ashphalt was scorched and melted there. Reaching maximum thrust within 5 seconds, causing the Chevy to reach speeds well in excess of 350 mph and continuing at full power for an additional 20-25 seconds, the driver, soon to be pilot, most likely would have experienced G-forces usually reserved for dog fighting F-14 jocks under full afterburners, basically causing him to become insignificant for the rest of the event. The individual remained on the highway for about 2.5 miles (15-20 seconds) before the driver applied and completely melted the brakes, blowing the tires and leaving thick rubber marks on the road surface. Became airborne for an additional 1.4 miles, impacting the cliff face at a height of 125 feet and leaving a black crater three feet deep in the rock. Most of the driver's remains were not recoverable; however, small fragments of bone, teeth and hair were extracted from the crater and fingernail shards were removed from a piece of debris believed to be a portion of the steering wheel. But I have just read on the site that this is a load of BS! Oh well. X777CAT Link to comment Share on other sites More sharing options...
R500 CYA Posted February 3, 2001 Share Posted February 3, 2001 GREAT STORY THOUGH! wink.gif Link to comment Share on other sites More sharing options...
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