While some of us thought that running lean of peak or adding mods was the answer, I’m personally more interested in efficient airframe designs. There’s a discussion right now on the AOPA forums about this topic and it’s been interesting to follow. I think it all started when one member asked what the most efficient airplane was. The mere fact that he was asking the question is amazing. Before avgas was $6 a gallon, the thought of buying for efficency was unheard of. Well, almost so.
Between 1981 and 1990 a forward thinking group of individuals ran a race of efficiency. The CAFE foundation rounded up interesting aircraft designs and raced them with a common metric of miles per gallon. If you assume a highly efficient stock airplane flies at around 15 to 20 mpg, it’s astounding that Gary Hertzler got almost 50 mpg on an 80-horsepower engine in his VariEze. Or that Mike Melvill (yes the space guy) got 21.6 mpg doing an average speed of 192 mph in a Rutan Catbird. It’s incredible stuff that leads one to believe the current fuel prices may be a good thing. Hopefully we’ll be looking at more efficient designs.
Tags: Ian Twombly