But rpm has mechanical limits that are protected against via FADECs etc. in todays engines even if you firewall
Not in hard alt mode...n1 rpm not protected..only N2.
mono
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Join Date: Feb 2002
Location: The Sandpit
Posts: 490
I'm not aware of any FADEC that prevents an EGT excedence whatever mode it's in. If you're in trouble you want full thrust even it it might result in an EGT overtemp.
As for turbine overspeed. I suggest you control the engine and watch the speeds just like they used to.
Correct,the EEC does not protect for EGT exceedance unless during engine start,it will shutoff the fuel after 15sec if oat above 2c and 20secs if temp below.