TECHNICAL DETAILS

DATABASE US VTOL ‘TAIL-SITTERS’ Three different approaches to overcoming the thrust/weight/lift conundrum Leaving aside the huge spinner for the six-blade propeller, the XFV-1’s frontal area was remarkably small. RYAN X-13 VERTIJET “At the heart of the Convair and Lockheed designs was the Allison YT40 turboprop, which combined two power sections side-by-side” The design of the three American VTOL tail-sitters was dominated by the need for an engine powerful enough to overcome the aircraft’s weight and achieve vertical lift. Consequently, the