This email is in response to your email to the Model 250
Customer Support
mailbox regarding C30 idle time requirements. Rolls-Royce
requires engines
that have been shut down for more than fifteen minutes to
stabilize at idle
speed for one minute before increasing power. This requirement
allows the
turbine wheels time to thermal normalize thus limiting the
possibility of
rim cracks.
If you have any other questions, please feel free to contact me.
Regards,
Tom Mitchell
Thomas D. Mitchell
Rolls-Royce Corporation
Model 250 Service Engineer
Thanks for the link Turboshaft!!
