Apr 122019
A Boeing diagram of the Model 767-85M, a pre-767 jetliner concept from 1971 designed to cruise at Mach 0.98. In order to achieve that, the design was massively aerodynamically optimized for transonic efficiency… with “wasp-waiting” taken to something of an extreme. The aircraft would have been fuel efficient at high (but still subsonic) speed, but would have been a nightmare to manufacture.
I’ve made the full-rez scan of this large format diagram available to above-$10-subscribers to the APR Monthly Historical Documents Program/Patreon.
If this sort of thing is of interest, consider subscribing. Even a buck a month will help out; but the more you subscribe for, the more you get… and the more you help me get from eBay and save for the ages.