On Tuesday 08 August 2006 12:08, Joacim Persson wrote: > On Tue, 8 Aug 2006, Lee Elliott wrote: > > Thanks for posting this observation - this is clearly a bit > > wacky (not that accelerating w/o +energy wasn't) - can you > > reproduce it? > > Now that I tested it again, I saw however that the FF number > didn't fall over from a high number to a negative, but > decreased to zero first. Same goes for N1. But it happens > quite suddenly. > > KSFO "Fair weather", Noon. 2D mini-panel on. Full throttle (no > AB, no flaps or slats). Take-off. Gear up and climb to 1000'. > Bank 90° and pull the stick all the way back. After a while > the engine sound suddenly changes to a low thunder and not > only FF goes negative, but so does N1 and EGT. (I don't think > N2 did though) Tank fills up and overfills quickly. FF is > *very* negative. The number runs off-screeen. If you get too > much altitude the phenomenon stops. Stay low; below 5000', at > 1000' or so ...without crashing into anything -- which isn't > that easy to avoid in 70G mach 3 turns. If you ease off > throttle, you get the reported phenomenon with insane speed > instead. (mach 8 and 300G). AoA seems to stay at about 16°. > > Apparently the "magical energy" doesn't come from increased > mass -- FF is near zero (and positive) with zero throttle and > mass doesn't increase. My guess is that this is a bug in the > yasim jet engine code somewhere. One of these one-liners that > are so hard to find. ;) But at least it's easy to reproduce.
I think there's now a patch in for the engine problem - don't know if it fixes everything though. LeeE ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
