CH-47Fs take off (click to view full) DII FOCUS articles offer in-depth, updated looks at significant military programs of record; this FOCUS Article covers the CH-47F/MH-47G Chinook helicopter programs, in the USA and abroad. These helicopters’ distinctive “flying banana” twin-rotor design stems from the brilliant work of aviation pioneer Frank Piasecki. It gives Chinooks the … Continue reading The New Chinooks: Boeing’s Modern H-47 Heavy-Lift Helicopters