On mercredi 12 novembre 2008, Arnt Karlsen wrote: > On Wed, 12 Nov 2008 02:22:12 +0100, gerard wrote in message > > <[EMAIL PROTECTED]>: > > Hello > > It is not the Concorde , nor the Titannic only the Crusader which > > sink. I have just updated the FDM of the F-8E Crusader, which will > > sink if you try to land on water. > > It only pretend to show that is possible to simulate an aircraft > > which sink when on the water. > > > > It is NOT an animation but the real behavior controlled by the FDM > > (JSBSim) > > > > First stage the aircraft is sliding on the water. > > http://pagesperso-orange.fr/GRTux/Cruse-sink-stage1.jpg > > > > Second stage (20 sec later) the Aircraft is stopped , it begin to > > sink. http://pagesperso-orange.fr/GRTux/Cruse-sink-stage2.jpg > > ..once water bangs in thru that big hole up front, > wouldn't it rip up the airframe?
In reality the pilot should have pulled the jettison handle, the canopy is then ejected, just before the pilot himself. Which happened :( mainly after catapulting ( defect of power) This could be part of an animation with submodel ( it could be an other story) I had done it some years ago but was never included. > > > Third stage (10 sec later) , the nose and the cockpit are in the > > water http://pagesperso-orange.fr/GRTux/Cruse-sink-stage3.jpg > > > > Forth stage (10 sec later), now there nothing to be done only the > > tail can be seen. > > http://pagesperso-orange.fr/GRTux/Cruse-sink-stage4.jpg > > > > You can experience that process with the Crusader from CVS, last > > update (NOW) Remember you must touch the water at low speed. > > > > You may do it with landing gear down ( though, any real pilot will > > tell you, to do it, gear up) > > Here it was done gears down > > ..this is just your screen shots and not the French Navy > F-8E ditch policy??? The F-8 is no Cub where you _can_ do > idiot stunts like aquaplane taxiing in RL if you lock the > brakes before touchdown on water. > How many seconds does a F-8 ditch take from touchdown to > "fin under water"? I never got any precise answer from my friends, in any case it was very short. These aircraft are not boats :) > > > ( only to prove that we don't walk on the > > sea :) ) Beware a too high speed will act the crash and freeze FG. > > > > When the aircraft stop to slide on the water, the process will > > start , it takes about 40 seconds > > > > Any FDM parameters can be modified , so we could get a very smooth > > sinking, and some others behavior, if wanted. > > > > Cheers -- Gérard http://pagesperso-orange.fr/GRTux/ J'ai décidé d'être heureux parce que c'est bon pour la santé. Voltaire ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
