|作用||VTOL research convertiplane|
|第一班飞机||25 February 1958|
《 Doak VZ-4 (or Doak Model 16) was an American prototype Vertical Takeoff and Landing (VTOL) aircraft built in the 1950s for service in the United States Army. Only a single prototype was built, and the U.S. Army withdrew it from active trials in 1963.
资料来源： Doak VZ-4 on Wikipedia
|Doak 16 VZ-4DA Walk Around|
|Localisation||US Army Transportation Museum, Fort Eustis|