On Sunday 16 April 2006 03:44 pm, Paul Surgeon wrote: > On other thing I'd like to know is : > How does one over rev a turbofan engine in real life? > I know it's not modeled in FG yet but I'm curious as to what actually > happens in real life to get an over speed problem.
I have over 14000 hrs in turbines and have only seen one overrev, and that was caused by a failed fuel control. These days, with electronic fuel controllers, overrevs are very rare. BTW, the overrev that happened to me saw high EGT and about 110% N1. We didn't let it run to failure so I don't know how long it would last in that condition. I assume the failure mode would be a turbine wheel disintegration. > It would be nice to get that working too - I set the N1 and N2 limits in > the engine config and have wired up the over speed warning lights. The hooks are in the code for failure modes but I've been reluctant to add any way to have the engine automatically enter a failure mode based on some internal parameter. It might be best to have failure modes triggered externally, i.e. by the app that instantiated the FDM. Dave ------------------------------------------------------- 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
