Originally Posted by Cosmo Kramer
So, which speed would give you the max range then?
Well ... if you assume constant TSFC (thrust-specific fuel consumption), then max L/D speed will give you minimum fuel consumption per hour. Max range speed is minimum fuel per NM and requires a higher speed -1.32 times minimum drag speed for a 'parabolic' drag polar. The actual max range speed will be somewhat different due to Mach effects and variation of TSFC. Hope this helps.