Vertical/Short Takeoff and Landing

Vertical/Short Takeoff and Landing

Vertical/Short Take-Off and Landing (V/STOL) is a term used to describe aircraft that are able to take-off or land vertically or on short runways. Most were experiments or outright failures from the 1950s to 1970s. Vertical takeoff and landing (VTOL) is a subset of V/STOL for craft which do not require short runways.

The Hawker Siddeley Harrier is perhaps the most famous production V/STOL aircraft. The Harrier is the only truly operational successful design to date. The Yak-38 Forger was another operational aircraft but is now out of commission and was very problematic. Helicopters have continued to dominate vertical flight.

V/STOL was originally developed to allow fast jets to be operated from clearings in forests, removing their reliance on damage-prone runways, or operated from small aircraft carriers that would previously only have been able to carry helicopters.

V/STOL has been replaced by STOVL or short takeoff, vertical landing in operation, if not in design. A rolling takeoff, sometimes with a ramp reduces the amount of thrust required to lift a fully laden aircraft from the ground, and increases the payload and range. For instance, the Harrier is incapable of taking off vertically with a full weapons and fuel load, and hence is operated as STOVL wherever possible.

The main advantages in the case of the Harrier is closer basing, which reduces response time and tanker support requirements. In the case of the Falklands war, it also permitted high performance fighter air cover and ground attack without a large catapult-based aircraft carrier.

The latest V/STOL aircraft is the F-35 Lightning II, which will enter service in 2011

List of V/STOL aircraft

This is a partial list, there have been many designs for V/STOL aircraft. ;Vectored thrust
* Ryan XV-5. Ducts in wings with half-trash can lid covers.
* Hawker P.1127/Kestrel. Prototype and evaluation versions that became the Harrier; four rotating nozzles for vectored thrust of fan and turbojet exhaust.

* Bell XV-3
* Bell XV-15
* Bell-Boeing V-22 Osprey Transport replacement for CH-46, delayed by development and safety problems. Tilt rotor scale up of XV-15.

* Fairchild X-19 - 4 rotating propellers, tilt-wing.
* Canadair CL-84 Dynavert, 2 turbo prop tilt-wing in RCAF service from 1960
* LTV Vought XC-142 4 engine tilt-wing cross-shafted turbo prop
* Bell X-22 rotating ducted propellers. Small transport prototype. Flew fine, slightly smaller than V-22 Osprey.

;Separate thrust and lift
* Kamov Ka-22
* Lockheed XV-4 Hummingbird
* Mirage "Balzac" V (V stands for vertical and is a modified Mirage III)
* Mirage III V the first VTOL capable of supersonic flight (Mach 2.03 during tests)
* Lockheed Martin X-35B/F-35B Prototype and production version use a vectored-thrust main engine (the Pratt & Whitney F135), plus a lifting engine (the Rolls-Royce LiftFan). First aircraft capable of demonstrating transition from vertical to supersonic flight on the same sortie.
*Yakovlev Yak-38

External links

* [ V/STOL wheels of misfortune]


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См. также в других словарях:

  • vertical/short takeoff and landing aircraft — Aircraft capable of executing a vertical takeoff and landing, a short takeoff and landing, or any combination of these modes of operation …   Aviation dictionary

  • vertical and/or short takeoff and landing — capability for aircraft …   Military dictionary

  • short takeoff and vertical landing aircraft — Fixed wing aircraft capable of clearing a 15 meter (50 foot) obstacle within 450 meters (1,500 feet) of commencing takeoff run, and capable of landing vertically. Also called STOVL. See also short takeoff and landing …   Military dictionary

  • Short Takeoff and Vertical Landing — STOVL, takeoff and landing that requires a very short runway area (by some specific combat airplanes) …   English contemporary dictionary

  • short takeoff and vertical landing aircraft — Fixed wing aircraft capable of clearing a 50 ft (15 m) obstacle within 1500 ft (450 m) of commencing a takeoff run and capable of landing vertically …   Aviation dictionary

  • Short SC.1 — infobox Aircraft name=SC.1 type=Experimental aircraft manufacturer=Short Brothers caption= XG900 colour profile designer= first flight=2 April 1957 (CTOL) 26 May 1958 (VTOL) introduced= retired=1971 status= primary user=Royal Aircraft… …   Wikipedia

  • Short Seamew — Infobox Aircraft name = SB.6 Seamew type = Anti submarine aircraft manufacturer = Short Brothers caption = Seamew prototype XA213 designer = first flight = 23 August 1953 [Green and Pollinger 1956, p. 260.] introduced = retired = 1957 status =… …   Wikipedia

  • Takeoff — In diesem Artikel oder Abschnitt fehlen folgende wichtige Informationen: Auflistung siehe Diskussionsseite Du kannst Wikipedia helfen, indem du sie recherchierst und einfügst …   Deutsch Wikipedia

  • Short Scion — infobox Aircraft name = S.16 Scion/Scion II type = Light transport landplane/floatplane manufacturer = Short Brothers Pobjoy Airmotors Ltd. caption = designer = Arthur Gouge first flight = 18 August 1933 introduced = retired = produced = number… …   Wikipedia

  • Short Kent — infobox Aircraft name = S.17 Kent type = Biplane Flying Boat Airliner manufacturer = Short Brothers caption = designer = first flight = 24 February 1931 introduced = 1931 retired = 1938 status = primary user = Imperial Airways more users =… …   Wikipedia

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