Sopwith Hippo

Last updated

Hippo
RoleTwo-seat fighter aircraft
National origin United Kingdom
Manufacturer Sopwith Aviation Company
First flight13 September 1917
StatusPrototype
Number built2

The Sopwith 3F.2 Hippo was a prototype British two-seat fighter aircraft of the First World War. It was a single-engined biplane with considerable negative stagger. It was not successful, the Bristol F.2 Fighter (already in production) being preferred by the Royal Flying Corps.

Contents

Development and design

In the summer of 1917, the Sopwith Aviation Company designed a two-seat fighter aircraft, the 3F.2 Hippo, possibly to replace the Sopwith 1½ Strutter in French service. [1] While the British Air Board did not place an order for the Hippo, it did grant Sopwith a licence to allow it to build prototypes as a private venture. The Hippo was designed to give the best possible view to the pilot and gunner, which dictated the aircraft's shape. Its two-bay wings had heavy (2 ft 3 in (0.69 m) [2] ) negative stagger, with the pilot sitting ahead of the upper wing and the gunner sitting behind the rear spar of the upper wing. The fuselage filled the gap between the wings, with the crew's heads level with the upper wing and cutouts in the wing's forward and trailing edges for the pilot and gunner. [3] The pilot was armed with two synchronised Vickers machine guns, while the observer was provided with two Lewis guns on a rocking pillar mount. It was powered by a Clerget 11 eleven-cylinder rotary engine, chosen as it was not heavily used. [4]

The first prototype Hippo flew on 13 September 1917. [5] When tested, it was found to have sluggish controls and poorer performance than the Bristol F.2 Fighter which was already in service. [6] Despite these results, which meant that there was little chance of it being built for the Royal Flying Corps, Sopwith rebuilt the Hippo, with increased dihedral on the upper wing, reduced wing stagger and an enlarged tailfin. The crude rocking pillar mount for the gunner's Lewis guns was replaced by a more conventional Scarff ring mounting a single Lewis gun. [7] The rebuilt prototype flew in April 1918, with a second prototype following in June. No further production followed. [5] [a]

Specifications

Data from British Aeroplanes 1914–18 [8]

General characteristics

Performance

Armament

See also

Aircraft of comparable role, configuration, and era

Notes

a Some sources suggest that, rather than a rebuilt first prototype, that the Hippo with reduced stagger was a new aircraft. [1] [4]

  1. 1 2 Robertson 1970, p. 228.
  2. Robertson 1970, p. 236.
  3. Bruce 1969, pp. 4–5.
  4. 1 2 Mason 1992, p. 123.
  5. 1 2 Green and Swanborough 1994, p. 538.
  6. Bruce 1969, p. 5.
  7. Bruce 1969, pp. 5–6.
  8. Bruce 1957, p. 621.

Related Research Articles

<span class="mw-page-title-main">Sopwith Salamander</span> British WW1 biplane ground attack/close support aircraft

The Sopwith TF.2 Salamander was a British ground-attack aircraft of the First World War designed by the Sopwith Aviation Company which first flew in April 1918. It was a single-engined, single-seat biplane, based on the Sopwith Snipe fighter, with an armoured forward fuselage to protect the pilot and fuel system from ground fire during low level operations. It was ordered in large numbers for the Royal Air Force but the war ended before the type could enter squadron service, although two were in France in October 1918.

<span class="mw-page-title-main">Sopwith Triplane</span> British WW1 triplane fighter aircraft

The Sopwith Triplane is a British single seat fighter aircraft designed and manufactured by the Sopwith Aviation Company during the First World War. It has the distinction of being the first military triplane to see operational service.

<span class="mw-page-title-main">Sopwith 1½ Strutter</span> British WW1 biplane fighter, bomber and reconnaissance aircraft

The Sopwith 1+12 Strutter is a British single- or two-seat multi-role biplane aircraft of the First World War. It was the first British two-seat tractor fighter and the first British aircraft to enter service with a synchronised machine gun. It was given the name 1+12 Strutter because of the long and short cabane struts that supported the top wing. The type was operated by both British air services and was in widespread but lacklustre service with the French Aéronautique Militaire.

<span class="mw-page-title-main">Sopwith Dolphin</span> British WW1 biplane fighter aircraft

The Sopwith 5F.1 Dolphin was a British fighter aircraft manufactured by the Sopwith Aviation Company. It was used by the Royal Flying Corps and its successor, the Royal Air Force, during the First World War. The Dolphin entered service on the Western Front in early 1918 and proved to be a formidable fighter. The aircraft was not retained in the postwar inventory and was retired shortly after the war.

<span class="mw-page-title-main">Armstrong Whitworth F.K.10</span> British WWI quadruplane fighter aircraft

The Armstrong Whitworth F.K.10 was a British two-seat quadruplane fighter aircraft built by Armstrong Whitworth during the First World War. While it was ordered in small numbers for the Royal Flying Corps and Royal Naval Air Service, it was not used operationally. It is one of the few quadruplane aircraft to reach production.

<span class="mw-page-title-main">Nieuport 12</span> French WW1 fighter and reconnaissance aircraft

The Nieuport 12 was a French sesquiplane reconnaissance, fighter aircraft and trainer used by France, Russia, Great Britain and the United States during World War I. Later production examples were built as trainers and served widely until the late 1920s.

The Sopwith 8F.1 Snail was a prototype British Fighter aircraft of the First World War. It was unsuccessful, being abandoned due to an unreliable engine.

<span class="mw-page-title-main">Westland Weasel</span> Type of aircraft

The Westland Weasel was a prototype British two-seat fighter/reconnaissance aircraft of the First World War. Designed to replace the Bristol Fighter, the Weasel was a single engined tractor biplane. Four prototypes were built, but no production followed owing to the failure of its original engine, although the prototypes were used as engine test beds for the successful Armstrong Siddeley Jaguar and Bristol Jupiter engines.

<span class="mw-page-title-main">Bristol Type 118</span> Type of aircraft

The Bristol Type 118 was a general-purpose military aircraft, a two-seat biplane built by the Bristol Aeroplane Company in the early 1930s, powered by a Bristol Mercury radial engine and aimed at overseas markets. The Type 120 was a Bristol Pegasus-engined variant entered into an Air Ministry competition and later used for armament tests. Two aircraft were built.

The Sopwith 2FR.2 Bulldog was a prototype British two-seat fighter of the First World War. A single-engined biplane, the Bulldog was a fighter/reconnaissance aircraft intended to replace the Bristol F.2 Fighter, but was unsuccessful, with no replacement for the Bristol Fighter being purchased.

The Sage Type 2 was a prototype British two-seat fighter aircraft of the First World War. A single-engined biplane with an enclosed cabin for its crew, only a single example was built, as more advanced aircraft became available.

The Armstrong Whitworth F.K.5 and F.K.6 were experimental triplanes built as escort fighters by Armstrong Whitworth during the First World War. They carried two gunners in nacelles mounted on the centre wing. One example of each type was built, with no further development or production following.

<span class="mw-page-title-main">Vickers F.B.11</span> Prototype British three-seat escort fighter of the First World War

The Vickers F.B.11 was a prototype British three-seat escort fighter of the First World War. A large single-engined biplane, it carried one gunner in a nacelle mounted on the upper wing to give an allround field of fire. Only a single example was completed.

The Sopwith Long Range Tractor Triplane (L.R.T.Tr) was a prototype British long-range three-seat triplane escort fighter of the First World War. Its unusual layout had a small gunner's nacelle mounted on the upper wing for an all-round field of fire. Only a single example was built, as other, smaller fighters proved more practicable.

<span class="mw-page-title-main">Vickers E.S.1</span> Type of aircraft

The Vickers E.S.1 was an early British Fighter aircraft of the First World War. A single-seat biplane, only three E.S.1s were built, although at least one was used by a home defence squadron of the Royal Flying Corps.

The Sopwith Snark was a British prototype fighter aircraft designed and built towards the end of the First World War to replace the RAF's Sopwith Snipes. A single engined triplane, the Snark did not fly until after the end of the war, only three being built.

<span class="mw-page-title-main">Westland Westbury</span> Type of aircraft

The Westland Westbury was a British twin-engined fighter prototype of 1926. Designed by Westland Aircraft it never entered service but played a useful role in the testing of the COW 37 mm gun. Only the two prototypes were completed.

<span class="mw-page-title-main">Vickers F.B.16</span> Type of aircraft

The Vickers F.B.16 was a British single-seat fighter aircraft of the First World War. It was originally designed to be powered by an experimental radial engine, development of which was abandoned. When re-engined with more powerful and reliable water-cooled V-8 engines, the F.B.16 demonstrated good performance, but only a few prototypes were built, the type not entering service.

The Vickers F.B.24 was a British two-seat fighter aircraft of the First World War. Only a few prototypes were built, as, although it had good performance, the Bristol F.2 Fighter was preferred.

The Sopwith Cobham was a British twin-engined triplane bomber aircraft designed and built by the Sopwith Aviation Company during the First World War. The only twin-engined aircraft built by Sopwith, the Cobham did not fly until after the end of the war, and was unsuccessful due to the failure of its engines, only three prototypes being built.

References