Aug 172020
From 1965, two Boeing-Vertol Heavy Lift Helicopter concepts in model form, to scale with a Chinook (at far right). At far left is the Model 227 which carried loaded internally; in the middle is Model 237, designed as a flying crane. note, though, that even though the Model 237 is designed to carry payloads externally the vehicle is so large that the reduced fuselage still has room for a substantial passenger load, windows and all.
