Noun
English Wikipedia has an article on:tiltrotorWikipedia
tiltrotor (plural tiltrotors)
An aircraft that has powered rotors mounted on engine pods that can rotate to provide lift and/or propulsion
Most recently, the Central Texas company, Austin Jet, one of the world's leading brokers of new and used helicopters signed a commitment to purchase a Bell Boeing 609 civil tiltrotor aircraft. Source: Internet
The second of four Bell Boeing V-22 Osprey tiltrotor aircraft built to production standards was delivered on Saturday, Sept. 13 to the Patuxent River Naval Air Warfare Test Center, Md. Source: Internet
The team of Bell Helicopter and Boeing Helicopters was awarded a development contract in 1983 for the tiltrotor aircraft. Source: Internet
The OSD and Navy administration were against the tiltrotor project, but congressional pressure eventually proved persuasive. Source: Internet
The V-22 first flew in 1989, and began flight testing and design alterations; the complexity and difficulties of being the first tiltrotor intended for military service in the world led to many years of development. Source: Internet