tolosan
22nd Oct 2007, 19:18
Hello,
is there any difference between Isa Dev and Delta Isa or are they all the same ?
Thanks
PPRuNeUser0183
22nd Oct 2007, 21:33
Not sure of the context you are asking the question in, but basically, 'Delta' is maths speak for 'change in', it is sometime denoted by a triangle or a little 'd'.
ISA deviation would be the difference between the measured conditions and ISA conditions...
delta ISA doesn't really make sense because ISA doesn't change, it's a standard by definition, and doesn't itself change.
Regards, CL