Usuari:Albert SN/proves: diferència entre les revisions

S'utilitzen diferents termes per a l'enlairament i l'aterratge depenent de la font d'empenta emprada. VTVL utilitza coets, mentre que VTOL utilitza aire, propulsat a través d'algun tipus de sistema de rotor.

 

{{Main|VTOL}}

'''Vertical Take-Off and Landing''' ('''VTOL''') [[aircraft]] includes [[fixed-wing aircraft]] that can hover, take off and land vertically as well as [[helicopter]]s and other aircraft with powered rotors, such as [[tiltrotor]]s.<ref>"Vertical Takeoff & Landing Aircraft," John P. Campbell, The MacMillan Company, New York, 1962.</ref><ref>Rogers 1989.</ref><ref>Laskowitz, I.B. "Vertical Take-Off and Landing (VTOL) Aircraft." ''Annals of the New York Academy of Sciences,'' Vol. 107, Art.1, 25 March 1963.</ref><ref>"Straight Up - A History of Vertical Flight," Steve Markman and Bill Holder, Schiffer Publishing, 2000.</ref> The terminology for spacecraft and rockets is ''[[VTVL]]'' (vertical takeoff with vertical landing).<ref>[http://www.spaceref.com/news/viewpr.html?pid=30929 "Masten Space Systems Achieves First-Ever VTVL Midair Engine Relight Milestone on Path to Space."] SpaceRef.com,'' 29 May 2010. Retrieved: 10 July 2011.</ref> Some VTOL aircraft can operate in other modes as well, such as [[CTOL]] (conventional take-off and landing), [[STOL]] (short take-off and landing), and/or [[STOVL]] (short take-off and vertical landing). Others, such as some helicopters, can only operate by VTOL, due to the aircraft lacking [[landing gear]] that can handle horizontal motion. VTOL is a subset of [[V/STOL]] (vertical and/or short take-off and landing).