Battlefield Pegasus Wings for the ground-commander CH-47A Chinook in Vietnam Army Chinook in action Towing with Vertol helicopters Towing capabilities of the Vertol 44 helicopters (Military H21 Workhorse) 1958 Commercial operations using Vertol Helicopters Vertol 44 for the petroleum industrie To produce the finest (Geen titel) Bolkow Bo-105 Boeing YUH-61A UTTAS (Geen titel) Vertol flotation trials new concept in Fying, the oneman XROE-1 Rotorcycle
