The V-22 Osprey is a joint service, multi-mission military aircraft with vertical take-off and landing (VTOL) capability. It is designed to perform VTOL missions like a conventional helicopter while also having the long-range cruise abilities of a twin turboprop aircraft. See in the first minute or so, the helicopter takes off and than the engines are leaned forward, so it can fly horizontaly as a twin turboprop aircraft! Amazing!