MIRAGE 4000 said:Hello Friends !
I find in my archives this drawing of the Boeing Model 147 (it was published in 2000 on my article on the AH-56 Cheyenne).
I search information on the Sikorsky S66 for AAFSS program.
Does this mean that you work (worked?) regualrly with Le fana de l'aviation ?
Sentinel Chicken said:Let me get this straight- Boeing entered a tiltwing design in to AAFSS competition? Did the specifications not call for a helicopter? I'd think on the basis of the 1947 Key West agreement the Army would have called for a helicopter to avoid a turf war with the USAF.
Interestingly while the AH-56 had problems with high speed flight rotor stability and flutter issues, they were not insurmountable and fixes were in the works