On Friday 10 Jun 2005 22:41, Andy Ross wrote: > theoreticle wrote: > > Let's say someone comes up with a model for the old Pan Am > > Clipper, that wants to land fully loaded with passengers and > > half loaded with fuel. The actual aircraft will sink it's > > fuselage as far as 5 feet into the water, perhaps more if > > landing in 'seas'. There absolutely must be some code to > > support sea planes landing in the water. > > The water interaction really isn't so difficult (it's just > like landing gear compression, but with an extra term for drag > due to water flow). > > The harder part is hacking the scenery subsystem to understand > which polygons are "water" and propagate this information out > through the groundcache to the FDMs. That will likely require > touching a ton of code all over the simulator; it's always the > data modelling issues that cause the problems. Algorithms are > easy. > > Andy
One problem with using YASim for sea planes is that the fuselage mustn't contact the surface as this equates to a crash. While I was experimenting with the SR45 I found that I had to omit the lower fuselage deck to achieve this, which must then affect the flying accuracy. I sort of got around it by using a non-retractable gear, which at least added some drag back. one of the last things I tried was to link the brakes of this gear to the gear compression so that the braking effect reduced or increased as the hull rose or sank into the water. LeeE _______________________________________________ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
