I understand that heavy duty diesel engines need a certain amount of running time before service. This can be to build brake pressure and so forth.
Other engines may need to be at full operating temperature, before being placed at maximum demand.
Is there a minimum time that a typical modern high bypass jet turbine (Engineers will say that there is no such thing as a typical engine) [others will say that that I have the nomenclature mixed up] needs to be operating before take off roll?
Also, if you have a long slow crawl out to departure (such as EWR
) can the engines overheat? This is based on them being designed to operate primarily at high altitudes. Or, are they able to keep themselves cool due to the nature of the bypass fan?
<I sit to be corrected
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