My understanding is that in order to find the V(L/D)max I can do the following steps:
- Look in the Pilot's Operating Handbook (POH) and find the performance reflecting the best TAS/fuel flow.
- Find the KTAS for the determination from step 1.
- Use a flight computer to get the KCAS from step 2.
- The number from step 3 is V(L/D)max.
- V(L/D)max / 1.316 = Vbe
- V(L/D)max * 1.316 = V-Carson
While this sounds logical, I do not see any clear path from step 1 to step 2.
I looked up the definition of TAS, and it is related to EAS. But when I look up EAS, it is dependent on TAS. So when you do the algebra, it simplifies down to TAS = TAS and EAS = EAS, which is nonsensical, circular, and unhelpful. Maybe I am not looking at the right equations, I’m not sure.
Do most pilots have flight computers with which they can determine KCAS starting with the value described in step 1? If not, how should this best be done? I could estimate air pressure using altitude, though it would not be very accurate, but I feel like there must be a better way given the large amount of instruments and tools available to most pilots in the cockpit.