On Friday 16 June 2006 06:32 am, Maria Vega Ramirez wrote: > So, if the engine´s delay is 5seconds, how can I know the bypassratio > number for this spool-up time?Is there any law about this?
In the turbine code we use: delay = 60 / (bypassratio + 3) solving for bypass ratio then: bypassratio = (60 / delay) - 3 So, to get a 5 second delay you need a bypass ratio of 9.0. Note that the bypass ratio number is not used anywhere else in the code. It's only used for estimating delay. (The fuel saving effects of bypass ratio are already included in the TSFC number). Dave _______________________________________________ Flightgear-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-users
