(Folland) Gnat @·AIRCRAFTUBE

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Folland Gnat

The Folland Gnat was a small, swept-wing British subsonic jet trainer and light fighter aircraft developed for the Royal Air Force, and flown extensively by the Indian Air Force. It first flew on 18 July 1955. Its design was such that it could be built without specialised tools by countries that were not highly industrialised. Although never used as a fighter by the Royal Air Force, the "Gnat T.1" trainer variant was widely used. As the mount for the RAF Red Arrows aerobatic team, the Gnat became well known.

The Gnat also achieved export success, particularly with India, the largest foreign operator who manufactured the aircraft under license. India then developed the HAL Ajeet, a modified and improved variant.

The Gnat was the creation of W.E.W. "Teddy" Petter, a British aircraft designer formerly of Westland Aircraft and English Electric. Petter believed that a small, simple fighter would offer the advantages of low purchase and operational costs. New lightweight turbojet engines that were being developed enabled the concept to take shape. One of the hallmarks of the Gnat's design was its compact size. However, to achieve such a size, its systems were closely packed, making maintenance more difficult. Some of its systems were not noted for their reliability and the aircraft suffered from high operating costs. There were also issues that its cockpit was cramped and obstructed the instructor's forward visibility. Furthermore, the limited weapons load and reduced fuel capacity - both designed to reduce overall kerb weight - meant that it could not operate for protracted periods. Despite the shortcomings, the Gnat and its predecessor the Folland 139 Midge were praised by the RAF evaluation and the test pilots. The lower cost of the Gnat, its compact dimensions, as well as "good press" for the aircraft in air shows, were among the factors that prompted a spurt in its export sales.

Operational history

Royal Air Force

In Britain, the Folland Fo.144 Gnat Trainer served in the RAF as the Gnat T.Mk.1. It was notable as the demonstration aircraft of the Red Arrows aerobatic display team between 1964, when the team was formed, and 1979, when it was replaced by the Hawk T.1A.

When the RAF replaced and sold off its Gnat T.1 trainers, many were bought by private collectors and subsequently appeared (along with some single-seat Gnats) in the Charlie Sheen movie Hot Shots.

One of the few remaining Gnats in the UK has recently been restored to flight status at Bournemouth Airport, in Southern England. G-NATY (formerly XR537) is the only genuine former Red Arrows Gnat on the European display circuit. The aircraft can be viewed at the De Havilland Aviation hangar at Bournemouth Airport in Dorset, southern England. Like many ex-military jet aircraft, there is one (G-FRCE) based at North Weald Airfield in Essex.

Finland

The Finnish Air Force received the first of its 13 Gnats on 30 July 1958. It was soon found to be a problematic aircraft in service and required a lot of ground service. Finland initially considered license manufacturing the aircraft but eventually decided not to. On 31 July 1958, the Finnish Air Force Major Lauri Pekuri broke the sound barrier for the first time in Finland at Lake Luonetjärvi with a Folland Gnat.

All Gnats were grounded on 26 August 1958, for six months after the destruction of GN-102 due to a technical error, and the aircraft soon became the subject of severe criticism. Three other aircraft were also destroyed in other accidents. The Gnats were removed from active service in 1972 when the Häme Wing moved to Rovaniemi, and when the new Saab 35 Drakens were taken into use.

India

Indo-Pak War of 1965

Serving primarily with the Indian Air Force, the Gnat is credited by many independent and Indian sources to have shot down seven Pakistani Canadair Sabres (licence built href="index.php?fichid=498">F-86s) in the 1965 war. The Pakistan Air Force (PAF) claims only three Gnat victories over href="index.php?fichid=498">F-86s in air to air combat, while two Gnats were downed by PAF fighters. During the initial phase of the 1965 War, an IAF Gnat, piloted by Squadron Leader Brij Pal Singh Sikand, landed at an abandoned Pakistani airstrip at Pasrur and was captured by the PAF who first claimed that two Pakistani F-104 Starfighters forced the Gnat down; however, the Indians claimed the pilot landed by mistake. This Gnat is displayed as a war trophy in the Pakistan Air Force Museum, Karachi. After the ceasefire, one Pakistani Cessna O-1 was shot down on 16 December 1965 by a Gnat.

Indo-Pak War of 1971

The Gnats were used again by India in the Bangladesh Liberation War against Pakistan. The most notable action was the Battle of Boyra where the first dogfights over East Pakistan took place. The IAF Gnats downed two PAF Canadair Sabres in minutes and badly damaged one. The Pakistan Air Force claims that one Gnat was shot down. Brij Pal Singh Sikand, the Gnat squadron commander had been a POW in the 1965 war. Another notable dogfight involving a Gnat was over Srinagar airfield where a lone Indian pilot held out against six Sabres, scoring hits on two of the Sabres in the process, before being overwhelmed. Gnat pilot, Nirmal Jit Singh Sekhon, was posthumously honoured with Param Vir Chakra (India's highest gallantry award) becoming the only IAF personnel to be given the award.

"Sabre Slayer"

By the end of 1971, the Gnat proved to be a frustrating opponent for the technically superior Sabres, and had lived up to its Indian Air Force nickname of "Sabre Slayers" since all its combat "kills" during the two wars were against Sabres. The Canadair Sabre Mk.6 was widely regarded as the best "dogfighter" of its era. Tactics called for Gnats taking on the Sabres in the vertical where they were at a disadvantage. Moreover, because the Gnat was lightweight and compact in shape, it was hard to see, especially at low levels where most of the dogfights took place. Apart from air defence operations, the aircraft performed multiple roles in the Bangladesh Liberation War being used in anti-shipping operations, ground attack, bomber-transport escort and close air support with "devastating effects" on the PAF. The success of the indigenously produced Gnats against the more sophisticated Pakistani-flown planes was viewed as a significant achievement.

The IAF were impressed by the Gnat's performance in the two wars, but the aircraft had problems including hydraulics and unreliable control systems. To address these issues, the IAF issued a requirement for an improved "Gnat II" in 1972, at first specifying that the new version was to be optimized as an interceptor, but then expanding the specification to include the ground-attack role. Over 175 of the Hindustan Aeronautics Limited-built licensed version, the Ajeet ("Unconquerable"), were produced in Bangalore, while about 40 were purchased directly from Folland.

Gnats served in India from 1958-1978, and several remain in use in private hands. Some IAF Gnats, one of which had participated in the 1971 war in East Pakistan (present day Bangladesh) were presented to the Bangladesh Air Force.

Variants

  • Fo.141 Gnat : Single seat lightweight fighter aircraft.
  • Gnat F.1 : Single-seat lightweight fighter version for Finland and India. This was also built in India under license as the HAL Gnat.
  • HAL Ajeet : Single-seat Mk.2 development of the Gnat F.1
  • HAL Ajeet Trainer : Two-seat tandem trainer version for the Indian Air Force. This version was derived from the HAL Ajeet and differed considerably from the Gnat T.1 used by the RAF
  • Fo.144 Gnat trainer : Two-seat advanced trainer aircraft.
  • Gnat T.1 : Two-seat advanced trainer version for the RAF.

Operators

  • Finnish Air Force.
  • Indian Air Force.
  • United Kingdom (Royal Air Force).
  • SFR Yugoslav Air Force received only two aircraft, construction numbers FL14 and FL17, machines originally marked as G-39-8 and G-39-9 respectivelly, and became Yugoslav AF inventory registration numbers 11601 and 11602. They were used for evaluation and tests by VOC (Flight test center).

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Folland Gnat of Wikipedia ( authors )

Specifications (Gnat F.1)

  • Length : 28 ft 8 in (or 8.74 m).
  • Height : 8 ft 1 in (or 2.46 m).
  • Wingspan : 22 ft 1 in (or 6.73 m).
  • Wing area : 136.6 ft² (or 12.69 m²).
  • Empty weight : 4,800 lb (or 2,175 kg).
  • Max takeoff weight : 9,040 lb (or 4,100 kg).
  • Maximum speed : 695 mph at 20,000 ft (or 1,120 km/h at 6,100 m).
  • Range : 500 mi (or 805 km).
  • Service ceiling 48,000 ft (or 14,630 m).
  • Rate of climb : 20,000 ft/min (or 100 m/s).
  • Powerplant : One Bristol-Siddeley Orpheus 701-01 turbojet.
  • Thrust : 4,705 lbf (or 20.9 kN).
  • Armament : Two 30mm ADEN cannons, two 500 lb bombs or eighteen 3 in rockets.

— — — = = — — —

This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Folland Gnat of Wikipedia ( authors )
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