A vertical and/or short take-off and landing (V/STOL) aircraft is an

airplane An airplane or aeroplane (informally plane) is a fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller, or rocket engine. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spe ...

able to take-off or land vertically or on short runways. Vertical takeoff and landing (VTOL) aircraft are a subset of V/STOL craft that do not require runways at all. Generally, a V/STOL aircraft needs to be able to hover. Helicopters are not considered under the V/STOL classification as the classification is only used for aeroplanes, aircraft that achieve

lift (force) A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direct ...

in forward flight by planing the air, thereby achieving speed and

fuel efficiency Fuel efficiency is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical potential energy contained in a carrier (fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, ...

that is typically greater than the capability of helicopters. Most V/STOL aircraft types were experiments or outright failures from the 1950s to 1970s. V/STOL aircraft types that have been produced in large numbers include the

F-35B Lightning II The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, all-weather stealth multirole combat aircraft that is intended to perform both air superiority and strike missions. It is also able to provide elect ...

Harrier Harrier may refer to: Animals * Harrier (bird), several species of birds * Harrier (dog) Media * Harrier Comics, a defunct British publisher * Space Harrier, a video game series Military * Harrier jump jet, an overview of the Harrier family: ...

Yak-38 Forger The Yakovlev Yak-38 (russian: Яковлев Як-38; NATO reporting name: "Forger") was the Soviet Naval Aviation's only operational VTOL strike fighter aircraft in addition to being its first operational carrier-based fixed-wing aircraft. It ...

and

V-22 Osprey The Bell Boeing V-22 Osprey is an American multi-mission, tiltrotor military aircraft with both vertical takeoff and landing (VTOL) and short takeoff and landing (STOL) capabilities. It is designed to combine the functionality of a convention ...

. A rolling takeoff, sometimes with a ramp (

ski-jump Ski jumping is a winter sport in which competitors aim to achieve the farthest jump after sliding down on their skis from a specially designed curved ramp. Along with jump length, competitor's aerial style and other factors also affect the final ...

), reduces the amount of thrust required to lift an aircraft from the ground (compared with vertical takeoff), and hence increases the payload and range that can be achieved for a given thrust. For instance, the Harrier is incapable of taking off vertically with full weapons and fuel load. Hence V/STOL aircraft generally use a runway if it is available. I.e. short takeoff and vertical landing (

STOVL A short take-off and vertical landing aircraft (STOVL aircraft) is a fixed-wing aircraft that is able to take off from a short runway (or take off vertically if it does not have a heavy payload) and land vertically (i.e. with no runway). The ...

) or conventional takeoff and landing (

CTOL A conventional take-off and landing (CTOL), also known as horizontal take-off and landing (HTOL) is the process whereby conventional fixed-wing aircraft A fixed-wing aircraft is a heavier-than-air flying machine, such as an airplane, which ...

) operation is preferred to

VTOL A vertical take-off and landing (VTOL) aircraft is one that can take off and land vertically without relying on a runway. This classification can include a variety of types of aircraft including helicopters as well as thrust-vectoring fixed-wi ...

operation. V/STOL was developed to allow fast jets to be operated from clearings in forests, from very short runways, and from small aircraft carriers that would previously only have been able to carry

helicopter A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attribut ...

s. The main advantage of V/STOL aircraft is closer basing to the enemy, which reduces response time and tanker support requirements. In the case of the

Falklands War The Falklands War ( es, link=no, Guerra de las Malvinas) was a ten-week undeclared war between Argentina and the United Kingdom in 1982 over two British dependent territories in the South Atlantic: the Falkland Islands and its territori ...

, it also permitted high-performance fighter air cover and ground attack without a large aircraft carrier equipped with

aircraft catapult An aircraft catapult is a device used to allow aircraft to take off from a very limited amount of space, such as the deck of a vessel, but can also be installed on land-based runways in rare cases. It is now most commonly used on aircraft carrier ...

Lists of V/STOL aircraft

This is a partial list; there have been many designs for V/STOL aircraft.

Vectored thrust

* Hawker P.1127/Kestrel/

; four rotating nozzles for vectored thrust of fan and jet exhaust.

Tilt-jet

Bell XF-109 The Bell D-188A (unofficial military designations XF-109/XF3L) was a proposed eight-engine Mach 2–capable vertical take-off and landing (VTOL) tiltjet fighter that never proceeded past the mock-up stage. Development In 1955, Bell Aircraft was ...

Bell 65 The Bell Model 65 Air Test Vehicle (ATV) was an experimental tiltjet VTOL aircraft built by Bell using parts from a number of general aviation aircraft.EWR VJ 101 The EWR VJ 101 was an experimental German jet fighter vertical takeoff/landing (VTOL) tiltjet aircraft. VJ stood for ''Versuchsjäger'', (German for "Experimental Fighter"). The VJ 101 was one of the first V/STOL designs to have the potential for ...

Tilt-rotor

AgustaWestland AW609 The AgustaWestland (now Leonardo) AW609, formerly the Bell/Agusta BA609, is a twin-engined tiltrotor VTOL aircraft with a configuration similar to that of the Bell Boeing V-22 Osprey. It is capable of landing vertically like a helicopter while ...

(originally Bell 609) *

AgustaWestland Project Zero The AgustaWestland Project Zero is a hybrid tiltrotor/Lift fan aircraft. It has been developed by AgustaWestland as a technology demonstrator, and is used to investigate all-electric propulsion and other advanced technologies. It is the world's ...

technology demonstrator *

Bell XV-3 The Bell XV-3 (Bell 200) is an American tiltrotor aircraft developed by Bell Helicopter for a joint research program between the United States Air Force and the United States Army in order to explore convertiplane technologies. The XV-3 featured ...

Bell XV-15 The Bell XV-15 is an American tiltrotor VTOL aircraft. It was the second successful experimental tiltrotor aircraft and the first to demonstrate the concept's high speed performance relative to conventional helicopters. Development Early VTOL ...

Bell-Boeing V-22 Osprey The Bell Boeing V-22 Osprey is an American multi-mission, tiltrotor military aircraft with both vertical takeoff and landing ( VTOL) and short takeoff and landing (STOL) capabilities. It is designed to combine the functionality of a convent ...

(scale up of XV-15) *

Bell V-280 Valor The Bell V-280 Valor is a tiltrotor aircraft being developed by Bell and Lockheed Martin for the United States Army's Future Vertical Lift (FVL) program.

Tilt-wing

Curtiss-Wright X-19 The Curtiss-Wright X-19, company designation Model 200, was an American experimental tiltrotor aircraft of the early 1960s. It was noteworthy for being the last aircraft of any kind manufactured by Curtiss-Wright. Design and development In Marc ...

– four rotating propellers, tilt-wing. *

Canadair CL-84 Dynavert The Canadair CL-84 "Dynavert", designated by the Canadian Forces as the CX-131, was a V/STOL turbine tiltwing monoplane designed and manufactured by Canadair between 1964 and 1972. Only four of these experimental aircraft were built with three ...

, two

turboprop A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. ...

tilt-wing *

LTV XC-142 The Ling-Temco-Vought (LTV) XC-142 was a tri-service tiltwing experimental aircraft designed to investigate the operational suitability of vertical/short takeoff and landing (V/STOL) transports. An XC-142A first flew conventionally on 29 Septem ...

four-engine tilt-wing cross-shafted

Bell X-22 The Bell X-22 is an American V/STOL X-plane with four tilting ducted fans. Takeoff was to selectively occur either with the propellers tilted vertically upwards, or on a short runway with the nacelles tilted forward at approximately 45°. Ad ...

rotating ducted propellers. Small transport prototype. Slightly smaller than V-22 Osprey. *

Hiller X-18 The Hiller X-18 was an experimental cargo transport aircraft designed to be the first testbed for tiltwing and V/STOL (vertical/short takeoff and landing) technology. Development Design work started in 1955 by Stanley Hiller Jr and Hiller A ...

Separate thrust and lift

Dornier Do 31 The Dornier Do 31 is an experimental vertical take-off and landing (VTOL) jet-propelled transport designed and produced by West German aircraft manufacturer Dornier. The development of the Do 31 was motivated principally by heavy interest expres ...

Jet transport with podded vector nozzles and lift engines *

Kamov Ka-22 The Kamov Ka-22 ''Vintokryl'' (rotor-wing, or literally, (air)screw-wing) (Cyrillic:Камов Ка-22 Винтокрыл) (NATO reporting name: Hoop) was a rotorcraft developed by Kamov for the Soviet Air Force. The experimental transport ai ...

Lockheed XV-4 Hummingbird The Lockheed XV-4 Hummingbird (originally designated VZ-10) was a U.S. Army project to demonstrate the feasibility of using VTOL for a surveillance aircraft carrying target-acquisition and sensory equipment.Dassault Balzac V The Dassault Balzac V was a French vertical takeoff and landing (VTOL) testbed of the early 1960s. It was built by Dassault Aviation from a prototype Mirage III aircraft to test the configuration for the Mirage IIIV. The sole example was badly ...

(V stands for vertical and is a modified Mirage III) *

Dassault Mirage IIIV The Dassault Mirage IIIV, also spelled Mirage III V, was a French vertical take-off and landing (VTOL) prototype fighter aircraft of the mid-1960s developed and produced by Dassault Aviation. The Mirage IIIV was a VTOL derivative of an existin ...

the first VTOL capable of supersonic flight (Mach 2.03 during tests) *

Fokker/Republic D-24 Alliance The Fokker/Republic D.24 was a supersonic variable-sweep wing concept aircraft designed from 1962 to 1968 by the Fokker-Republic Alliance, a coalition between Fokker and Republic Aviation. The project was based out of Schiphol, Netherlands, and ...

* Ryan XV-5. Fans in wings driven by engine exhaust gas. *

VFW VAK 191B The VFW VAK 191B was an experimental German vertical take-off and landing (VTOL) strike fighter of the early 1970s. VAK was the abbreviation for ''Vertikalstartendes Aufklärungs- und Kampfflugzeug'' (Vertical Take-off Reconnaissance and Strike ...

Attack fighter similar to Harrier but supersonic dash speed, smaller wings and lift engines. Flown, but not operational. *

Yakovlev Yak-38 The Yakovlev Yak-38 (russian: Яковлев Як-38; NATO reporting name: "Forger") was the Soviet Naval Aviation's only operational VTOL strike fighter aircraft in addition to being its first operational carrier-based fixed-wing aircraft. It w ...

Yakovlev Yak-141 The Yakovlev Yak-141 (russian: Яковлев Як-141; NATO reporting name "Freestyle"), also known as the Yak-41, is a Soviet supersonic vertical takeoff/landing (VTOL) fighter aircraft designed by Yakovlev. It was used for testing. Design ...

* Short SC.1

Supersonic

Although many aircraft have been proposed and built, with a few being tested, the F-35B is the first and only supersonic V/STOL aircraft to have reached operational service, having entered service in 2016."Report: F-35 Work Falls Behind Two More Years."
''CQ Politics'', 23 July 2009. *

Bell D-188A The Bell D-188A (unofficial military designations XF-109/XF3L) was a proposed eight-engine Mach 2–capable vertical take-off and landing (VTOL) tiltjet fighter that never proceeded past the mock-up stage. Development In 1955, Bell Aircraft w ...

Mach 2 swivelling engines, mockup stage *

EWR VJ 101 The EWR VJ 101 was an experimental German jet fighter vertical takeoff/landing (VTOL) tiltjet aircraft. VJ stood for ''Versuchsjäger'', (German for "Experimental Fighter"). The VJ 101 was one of the first V/STOL designs to have the potential for ...

Mach 2 fighter, flown to Mach 1.04 but not operational *

Delta wing Mach 2 fighter with lift engines, first VTOL capable of supersonic and Mach 2 flight (Mach 2.03 during tests), not operational *

Hawker Siddeley P.1154 The Hawker Siddeley P.1154 was a planned supersonic vertical/short take-off and landing (V/STOL) fighter aircraft designed by Hawker Siddeley Aviation (HSA). Development originally started under P.1150, which was essentially a larger and fas ...

M1.7 Supersonic Harrier. It was not completed *

Republic AP-100 The Republic Aviation AP-100 was a project for a VTOL, six-turbojet engined, nuclear capable, strike fighter concept designed by Alexander Kartveli, It had three ducted fans in the centre of its fuselage and tail and was a possible contender fo ...

strike fighter concept *

Rockwell XFV-12 The Rockwell XFV-12 was a prototype supersonic United States Navy fighter which was built in 1977. The XFV-12 design attempted to combine the Mach 2 speed and AIM-7 Sparrow armament of the McDonnell Douglas F-4 Phantom II in a VTOL (vertical t ...

Built with complex "window blind" wings but could not lift its own weight *

Lift engines plus swivel tailpipe * Lockheed Martin X-35B /

F-35B The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, all-weather stealth multirole combat aircraft that is intended to perform both air superiority and strike missions. It is also able to provide electr ...

uses a vectored-thrust tailpipe (the

Pratt & Whitney F135 The Pratt & Whitney F135 is an afterburning turbofan developed for the Lockheed Martin F-35 Lightning II, a single-engine strike fighter. It has two variants; a Conventional Take-Off and Landing ( CTOL) variant used in the F-35A and F-35C, and a ...

) plus a shaft-driven lifting fan. It is the first aircraft capable of demonstrating transition from short take-off to supersonic flight to vertical landing on the same sortie.Kjelgaard, Chris (Senior Editor)
"From Supersonic to Hover: How the F-35 Flies."
''space.com,'' 21 December 2007.

References

External links

{{DEFAULTSORT:V STOL Types of take-off and landing