ED
+
California 1954 A Convair XFY Pogo powered by Allison T-40 A-14 turboprop engine an experiment aircraft using vertical takeoff and landing (VTOL)
ED
+
In the mid-1940s Boeing engineers conducted research to become familiar with gas turbines but it became apparent that the research engines were sign
RM
+
Turboprop aeroplane engine
3
0
https://www.afloimages.com/search/turboprop%20powered.html