efficiency

Hi! I'm glad to finally make an account after watching Flite Test for quite a few years. Today I'd like to ask about propeller efficiency and how it correlates with aircraft range. So, from what I've gathered from data, it seems larger props unanimously produce more thrust for a given amount of...

I would like to know if anybody has tested the efficiency of inverted flight. For instance with a standard flying wing, would you get a lot less airtime out of the same battery flying inverted than doing the same flight upright?