Fairey Delta 1

Last updated

Fairey Delta 1
Fairey Delta FD1.jpg
Fairey Delta 1
General information
TypeResearch aircraft
National originUnited Kingdom
Manufacturer Fairey Aviation Company
Number built1
History
First flight12 March 1951
Retired1956

The Fairey Delta 1 (FD1) was a research aircraft developed and produced by British aircraft manufacturer Fairey Aviation. It holds the distinction of being the first British-designed aircraft to be furnished with a delta wing.

Contents

Initially referred to as the Type R, work on the aircraft had begun with the intention of developing a ramp-launched vertical takeoff (VTO) fighter. As its design was refined, the VTO features were discarded, instead exploring other concepts in line with Air Ministry Specification E.10/47. Accordingly, the aircraft was developed to investigate the then-unfamiliar qualities of the delta wing, particularly its flight characteristics when flown at transonic speeds. A total of three aircraft were ordered by the Ministry of Supply (MoS). The type received the name "Fairey Delta" shortly thereafter.

The first aircraft was produced at Fairey's facility in Heaton Chapel, Stockport. Ground testing commenced during mid-1950. On 12 March 1951, the FD1 performed its maiden flight, being flown by Fairey test pilot Group Captain R. Gordon. The aircraft received several modifications as a consequence of a landing accident in September 1951. Further flight testing determined that the FD1 exhibited numerous unfavourable qualities in terms of handling and stability, which contributed to the cancellation of the two further airframes. Following the end of government interest, Fairey continued to operate the sole completed FD1 to support their own research purposes up until the aircraft sustained substantial damage in a landing accident on 6 February 1956, after which it was deemed uneconomic to repair.

Design and development

What would become the Fairey Delta 1 (FD1) had been originally conceived internally by Fairey as a vertical takeoff (VTO) fighter. In concept, the company hoped that it would be a capable interceptor aircraft that could be launched from smaller ships as well as aircraft carriers. [1] The specific VTO method intended to be used would have involved a steeply inclined ramp, which was supposed to be mobile. [2] Unlike its launch system, the aircraft would have landed conventionally, being envisaged as being compatible with the existing arresting gear of Royal Navy aircraft carriers. While the Second World War was still being fought when Fairey had begun work on the concept, the conflict's end meant that the urgency of its development was quickly curtailed as well. [3]

During July 1946, Fairey was issued with a contract to further develop their VTO concept aircraft. [4] Prior to the development of full-scale aircraft, a number of pilotless radio-controlled scale models were produced and flown, which supplied Fairey's design team with real world data to support further work. [5] These rocket-powered models explored several diverse forms of swept wings, including forward-swept and compound wing designs. [6] The first model was launched during 1949 from a ship out at sea in Cardigan Bay, Wales. [4] Several later tests of the models was conducted at the RAAF Woomera Range Complex in Australia; a total of 40 models were completed and launched, the last of which during 1953. [1] [7]

While the project was at an early stage, Fairey was actively advocating the value of their research programme to various British official; these efforts attracted the attention of the Ministry of Supply (MoS), as well as some interest from both the Royal Navy and the Royal Air Force. [3] After evaluating the concept, the MoS decided that it would want the aircraft produced as a more conventional jet-powered research vehicle to fulfil the requirements of Specification E.10/47. [2] Three aircraft were ordered with the name "Fairey Delta" applied to the project; subsequently, the name was changed to Fairey Delta 1. [2]

The Fairey Type R design was a compact mid-wing tailless delta monoplane; aviation periodical Flight observed the aircraft to be "of exceptionally small dimensions". [5] It had a circular cross-section fuselage and a single engine air inlet located at the extreme front. The powerplant adopted for the aircraft was a single Rolls-Royce Derwent 8 centrifugal turbojet engine. According to aviation author Robert Jackson, the FD1 was intended to be outfitted with larger booster rockets to facilitate ramp take-offs, during which control would have been maintained via four swivelling jet nozzles on the rear fuselage. [1] [4] Although designed as a transonic aircraft, the FD1 had a short-coupled, "portly" appearance, completely at odds with Fairey's next design, the sleek and elegant Delta 2. [8]

Fairey stated that the aircraft's delta wing possessed several attributes that were favourable for high speed flight, including relatively low drag characteristics and a comparatively stiff structure, along with stowage space for both fuel and armaments. [6] Although originally envisaged for ramp launching, the FD1 was fitted with a tricycle undercarriage. [1] The FD1 was fitted with a small horizontal delta-shaped control surface on the top of the tailfin; this surface was intended to eliminate adverse instances of "serious pitching as it gathered speed." [2] During early development, a maximum speed of 587 mph as well as the ability to attain an altitude of 30,000 feet within four and a half minutes were envisioned; however, the addition of the new tail surface had the consequence of severely limiting the aircraft's top speed to a relatively pedestrian 345 mph (555 km/h). [1]

Operational history

The Fairey Delta One at Manchester (Ringway) Airport in May 1950 assembled for ground taxiing trials. Note it is already fitted with the additional delta-shaped control surface at the tip of its tail fin. Fairey FD1 VX350 RWY 05.50 edited-2.jpg
The Fairey Delta One at Manchester (Ringway) Airport in May 1950 assembled for ground taxiing trials. Note it is already fitted with the additional delta-shaped control surface at the tip of its tail fin.

The only FD1 to be completed was built at Fairey's Heaton Chapel Stockport factory and taken by road to their test facility at Manchester's Ringway Airport for final assembly. Starting on 12 May 1950 it made several high-speed taxi runs down the 4,200-foot main runway there before being partially dismantled and transported by road to the Aeroplane and Armament Experimental Establishment (AAEE) at RAF Boscombe Down. After further taxi tests, the aircraft (serial number VX350) made its maiden flight on 12 March 1951; flown by Fairey test pilot Group Captain R. Gordon Slade, this flight lasted for 17 minutes. [5]

The FD1 underwent extensive flight testing, which largely focused on exploring its lateral and longitudinal stability, as well as its overall flying characteristics. [9] These flights helped determine that the aircraft possessed serious stability problems; its lack of stability led to the aircraft being often characterized as being "dangerous." [2] [8] Following a landing accident that occurred in September 1951, the FD1 was grounded for two years. [8] During this time, it received several modifications; changes included the removal of the temporary slots, as well as the deletion of the streamlined housings for the anti-spin parachutes that were mounted at the wingtips. The large control surfaces have been attributed with causing difficulty in controlling the FD1, making it hard to fly with precision, although it could achieve a rapid roll rate. [2]

During 1953, the flight test programme was terminated by the Air Ministry, resulting in the withdrawal of state support for the FD1. [10] Only a single FD1 was built; the second (VX357) and third (VX364) airframes were cancelled prior to production commencing. [2] This decision was not regarded as being a particularly heavy blow to Fairey, even in terms of the firm's ambitions to explore high speed delta wing aircraft, as detailed design work had already commenced on the more capable and sleeker-looking Fairey Delta 2 during the previous year. [10]

Following the programme's cancellation, the sole aircraft continued to be flown for a time by Fairey to perform trials work. [11] On 6 February 1956, the FD1 was damaged beyond repair in a landing accident at Boscombe Down. [11] In October 1956, the aircraft was transported by road for use as a static target on the Shoeburyness weapons range, after which it was later scrapped. [11] Fairey had spent £382,000 of their own money on the FD1. [12]

Specifications (Fairey Delta 1)

Data fromJane's Pocket Book of Research and Experimental Aircraft [13]

General characteristics

Performance

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

Related Research Articles

<span class="mw-page-title-main">VTOL</span> Aircraft takeoff and landing done vertically

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-wing aircraft and other hybrid aircraft with powered rotors such as cyclogyros/cyclocopters and gyrodynes.

<span class="mw-page-title-main">Delta wing</span> Triangle shaped aircraft wing configuration

A delta wing is a wing shaped in the form of a triangle. It is named for its similarity in shape to the Greek uppercase letter delta (Δ).

<span class="mw-page-title-main">Bell X-1</span> Experimental rocket-powered aircraft

The Bell X-1 is a rocket engine–powered aircraft, designated originally as the XS-1, and was a joint National Advisory Committee for Aeronautics–U.S. Army Air Forces–U.S. Air Force supersonic research project built by Bell Aircraft. Conceived during 1944 and designed and built in 1945, it achieved a speed of nearly 1,000 miles per hour in 1948. A derivative of this same design, the Bell X-1A, having greater fuel capacity and hence longer rocket burning time, exceeded 1,600 miles per hour in 1954. The X-1 aircraft #46-062, nicknamed Glamorous Glennis and flown by Chuck Yeager, was the first piloted airplane to exceed the speed of sound in level flight and was the first of the X-planes, a series of American experimental rocket planes designed for testing new technologies.

<span class="mw-page-title-main">Alexander Lippisch</span> German aeronautical engineer, a pioneer of aerodynamics

Alexander Martin Lippisch was a German aeronautical engineer, a pioneer of aerodynamics who made important contributions to the understanding of tailless aircraft, delta wings and the ground effect, and also worked in the U.S. Within the Opel-RAK program, he was the designer of the world's first rocket-powered glider.

<span class="mw-page-title-main">Heinkel He 176</span> Experimental rocket plane

The Heinkel He 176 was a German experimental rocket-powered aircraft. It was the world's first aircraft to be propelled solely by a liquid-fueled rocket, making its first powered flight on 20 June 1939 with Erich Warsitz at the controls.

<span class="mw-page-title-main">Fairey Aviation Company</span> British aerospace and engineering company (1915–1977)

The Fairey Aviation Company Limited was a British aircraft manufacturer of the first half of the 20th century based in Hayes in Middlesex and Heaton Chapel and RAF Ringway in Cheshire that designed important military aircraft, including the Fairey III family, the Swordfish, Firefly, and Gannet. It had a strong presence in the supply of naval aircraft, and also built bombers for the RAF.

<span class="mw-page-title-main">Convair F2Y Sea Dart</span> Hydroski jet fighter, U.S. Navy, 1953

The Convair F2Y Sea Dart is an American seaplane fighter aircraft that rode on twin hydro-skis during takeoff and landing. It flew only as a prototype, and never entered mass production. It is the only seaplane to have exceeded the speed of sound.

<span class="mw-page-title-main">Fairey Rotodyne</span> 1950s British compound gyroplane

The Fairey Rotodyne was a 1950s British compound gyroplane designed and built by Fairey Aviation and intended for commercial and military uses. A development of the earlier Fairey Jet Gyrodyne, which had established a world helicopter speed record, the Rotodyne featured a tip-jet-powered rotor that burned a mixture of fuel and compressed air bled from two wing-mounted Napier Eland turboprops. The rotor was driven for vertical takeoffs, landings and hovering, as well as low-speed translational flight, but autorotated during cruise flight with all engine power applied to two propellers.

<span class="mw-page-title-main">Avro 707</span> British experimental aircraft (1949–1967)

The Avro 707 is an experimental aircraft designed and produced by the British aircraft manufacturer Avro.

<span class="mw-page-title-main">Flap (aeronautics)</span> Anti-stalling high-lift device on aircraft

A flap is a high-lift device used to reduce the stalling speed of an aircraft wing at a given weight. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to reduce the take-off distance and the landing distance. Flaps also cause an increase in drag so they are retracted when not needed.

<span class="mw-page-title-main">Convair XF-92</span> Experimental interceptor aircraft

The Convair XF-92 is an American, delta wing, first-generation jet prototype. Originally conceived as a point-defence interceptor, the design was later used purely for experimental purposes and only one was built. However, it led Convair to use the delta-wing on a number of designs, including the F-102 Delta Dagger, F-106 Delta Dart, B-58 Hustler, the US Navy's F2Y Sea Dart as well as the VTOL FY Pogo.

<span class="mw-page-title-main">Airplane</span> Powered aircraft with wings

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 spectrum of uses for airplanes includes recreation, transportation of goods and people, military, and research. Worldwide, commercial aviation transports more than four billion passengers annually on airliners and transports more than 200 billion tonne-kilometers of cargo annually, which is less than 1% of the world's cargo movement. Most airplanes are flown by a pilot on board the aircraft, but some are designed to be remotely or computer-controlled such as drones.

<span class="mw-page-title-main">Fairey Delta 2</span> 1950s British supersonic research aircraft

The Fairey Delta 2 or FD2 is a British supersonic research aircraft that was produced by the Fairey Aviation Company in response to a specification from the Ministry of Supply for a specialised aircraft for conducting investigations into flight and control at transonic and supersonic speeds. Features included a delta wing and a drooped nose. On 6 October 1954, the Delta 2 made its maiden flight, flown by Fairey test pilot Peter Twiss; two aircraft would be produced. The Delta 2 was the final aircraft to be produced by Fairey as an independent manufacturer.

<span class="mw-page-title-main">Canadair CL-84 Dynavert</span> Canadian experimental tiltwing VSTOL aircraft

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 entering flight testing. Two of the CL-84s crashed due to mechanical failures, with no fatalities in either accident. Despite the CL-84 being successful in the experimental and operational trials carried out between 1972 and 1974, none of the prospective customers placed any orders for the type.

<span class="mw-page-title-main">Boulton Paul P.111</span> Tailless delta experimental aircraft, United Kingdom, 1950

The Boulton Paul P.111 is an experimental aircraft designed and produced by the British aircraft manufacturer Boulton Paul. It was amongst the first aircraft designed to explore the characteristics of the tailless delta wing configuration.

<span class="mw-page-title-main">Tip jet</span> Jet nozzle at the tip of some helicopter rotor blades

A tip jet is a jet nozzle at the tip of some helicopter rotor blades, used to spin the rotor, much like a Catherine wheel firework. Tip jets replace the normal shaft drive and have the advantage of placing no torque on the airframe, thus not requiring the presence of a tail rotor. Some simple monocopters are composed of nothing but a single blade with a tip rocket.

<span class="mw-page-title-main">Short SB.4 Sherpa</span> Experimental aircraft in the UK

The Short SB.4 Sherpa was an experimental aircraft designed and produced by the British aircraft manufacturer Short Brothers. Only a single example was ever produced.

<span class="mw-page-title-main">Canard (aeronautics)</span> Aircraft configuration in which a small wing is placed in front of the main wing

In aeronautics, a canard is a wing configuration in which a small forewing or foreplane is placed forward of the main wing of a fixed-wing aircraft or a weapon. The term "canard" may be used to describe the aircraft itself, the wing configuration, or the foreplane. Canard wings are also extensively used in guided missiles and smart bombs.

<span class="mw-page-title-main">SNCASO Trident</span> French mixed-power interceptor aircraft

The SNCASO SO.9000 Trident is a French jet and rocket powered interceptor aircraft built by aircraft manufacturer SNCASO during the 1950s. As part of a wider effort to re-build French military power during the late 1940s and to furnish France with advanced, new domestically produced designs, a request for a supersonic-capable point-defence interceptor aircraft to equip the French Air Force was issued to SNCASO. In response, the firm designed the mixed-propulsion Trident, powered by a single SEPR rocket engine, which was augmented by wingtip-mounted turbojet engines, and the Air Force ordered two prototypes.

References

Citations

  1. 1 2 3 4 5 Jackson 2007, p. 171.
  2. 1 2 3 4 5 6 7 Winchester 2005, p. 254.
  3. 1 2 Hobbs 2014, p. 309.
  4. 1 2 3 van Pelt 2012, p. 149.
  5. 1 2 3 Flight 1951, p. 348.
  6. 1 2 Flight 1951, pp. 348-349.
  7. van Pelt 2012, pp. 149-150.
  8. 1 2 3 Flanagan 2017, p. 95.
  9. Jackson 2007, pp. 171-172.
  10. 1 2 Jackson 2007, p. 172.
  11. 1 2 3 Chorlton 2012, p. 104.
  12. "A Fairey 'Forty Years' AGM" (PDF), Flight: 826, 2 December 1955
  13. Taylor 1976, p. 91.

Bibliography