Andy Ross wrote:

Tune up the starter torque to match the recent changes to engine
friction.  We should get these better calibrated at some point...

When you engage a starter on a piston engine (I have no turbine experience), it spins the propeller at an extremely slow, constant speed -- maybe 30 rpm -- until the engine fires; at that point, the engine spins the propeller up to speed (say, 1000 rpm with the throttle slightly open) almost instantly.


With YASim (and possibly JSBSim -- I don't remember), the starter seems to gradually spin the propeller up to the engine's idle speed (600-800 rpm), at which point the engine takes over. That has no relation to what really happens.


All the best,



David


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