My friend has finally decided she ought to learn a bit about aircraft and how they fly. Probably so she can understand what I blather on about...
I've had a search through the 'net and found a couple of sites, but nothing that really hits the spot as far as level of complexity goes. She's a smart cookie and doesn't need baby talk.
Does anyone have any suggestions of sites they've used during their PPL training? At the moment I'm after information on lift and piston engines. Thank you!