A vertical take-off and landing aircraft is one that can hover, take off, and land vertically. This classification includes fixed-wing aircraft as well as helicopters and other aircraft with powered rotors, such as cyclogyros/cyclocopters and tiltrotors. Some VTOL aircraft can operate in other modes as well, such as CTOL, STOL, and/or STOVL. 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. Besides the ubiquitous helicopter, there are currently two types of VTOL aircraft in military service: craft using a tiltrotor, such as the Bell Boeing V-22 Osprey, and aircraft using directed jet thrust such as the Harrier family. Generally speaking, VTOL aircraft capable of V/STOL use it wherever possible, since it typically significantly increases takeoff weight, range or payload compared to pure VTOL.
The numerical value of vtol in Chaldean Numerology is: 2
The numerical value of vtol in Pythagorean Numerology is: 6
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