High Quality Content by WIKIPEDIA articles! The Boeing Vertol YUH-61 , a twin turbine-engined, medium-lift, military assault/utility helicopter was the runner-up in a United States Army competition in the mid 1970s to replace the Bell UH-1 "Huey" family. Though the two final competing designs were both developed to Army specifications, Sikorsky's aircraft was selected. Under a contract awarded in August 1972, Boeing Vertol designed and delivered three prototypes to compete against the Sikorsky YUH-60A in the US Army's Utility Tactical Transport Aircraft System program. While Boeing Vertol failed to win the competition, it pinned its hope on winning civil orders and the US Navy's LAMPS III program. In the end, a variant of the Sikorsky design, the SH-60B, would also win, and what civil orders that were received were canceled. Three aircraft were built and a further two were cancelled and not completed.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.