Mcrit, mmo and mach trimmer confusion
Hi all,
I know that this thread has been discussed already but i couldnt find a proper amswer to my question and i was wondering if someone could shed some light on it.
-most of the jet aircrafts cruise speeds are above mcrit so that means there is a range of speed between mcrit and mmo at which the aircraft flies. How can this good performance wise if above mcrit you will have a drag increase due to shockwaves?in another post i read that at 0.05 M above Mcrit the drag increase isnt much but still why would you want to fly at speeds that are going to increase your drag?
-i know what a mach trimmers is there for but what i didnt get is how does it actually work? Does it activate at a preset mach number even tough mcrit is not a fixed value but it changes according to outside conditions and aircraft configuration?
I hope my questions are clear enough and someone will be able to enlighten me
Thanks in advance