Mann & Grimmer M.1

Last updated

M.1
Mann-and-Grimmer-M1.jpg
Role Fighter aircraft
National origin United Kingdom
ManufacturerMann & Grimmer
DesignerReginald Frank Mann
First flight19 February 1915
Number built1

The Mann & Grimmer M.1 was a British prototype two-seat fighter aircraft of the First World War. It was a single-engined biplane with a radial engine in the aircraft's nose driving two pusher propellers, which was hoped to give a good field of fire for the gunner and high performance. Only one example was built, with no production following.

Contents

Design and development

In 1913, the schoolboy Reginald F. Mann, a successful designer and builder of model aircraft, set up the company "Mann & Grimmer" at Surbiton, London with his teacher Robert P. Grimmer to build model aircraft on a commercial scale. [1] [2] The outbreak of the First World War in August 1914 resulted in Mann starting the design of a two-seat machine gun-armed aircraft. Mann wanted his design to combine a good field of fire for the observer's machine gun, as found in pusher configuration aircraft, with the higher performance found in tractor aircraft. [3] [4] To meet these requirements, his design featured a deep conventional fuselage, powered by a single engine mounted in the nose, which drove two 2-bladed pusher propellers that were mounted behind and between the wings, via a long shaft to a gearbox and chain drives to the propellers. The observer sat in the nose of the aircraft, just behind the engine, while the pilot sat in a separate cockpit behind the trailing edge of the wings. It had two-bay wings with a swept leading edge and ailerons on upper and lower wings. It had a fixed conventional landing gear. [5] [6]

The prototype was assembled at Hendon Aerodrome in February 1915, fitted with a 100 horsepower (75 kW) Anzani radial engine. It made its maiden flight on 19 February 1915. It suffered problems with the complicated chain drive, which slowed testing, and proved to be underpowered, reaching a top speed of 70 miles per hour (110 km/h). [7] In order to improve performance, it was fitted with a 125 horsepower (93 kW) Anzani, flying in this form on 29 June 1915. [8] A series of gradual modifications were made to improve performance, with the aircraft eventually reaching a speed of 85 miles per hour (137 km/h). While it was planned that the aircraft would be evaluated by the Royal Flying Corps, this did not occur because the prototype was wrecked in a crash-landing during an attempt on the British altitude record on 16 November 1915, caused by failure of the gearbox. [9] [10] [11]

While Mann designed an improved version, the M.2, which was hoped to reach speeds of 100 miles per hour (160 km/h), a lack of funds resulted in construction of a prototype being abandoned. [12]

Specifications (125 hp Anzani)

Data from War Planes of the First World War: Volume One Fighters [12]

General characteristics

Performance

Armament

Notes

  1. Bruce 1957, p. 297.
  2. Gunston 2005, p. 301.
  3. Bruce 1965, pp. 140–141.
  4. Bruce 1957, pp. 297–298.
  5. Bruce 1965, pp. 142–143.
  6. Flight 26 March 1915, p. 208.
  7. Bruce 1957, p. 298.
  8. Bruce 1957, pp. 298–299.
  9. Bruce 1957, pp. 299–300.
  10. Green and Swanborough 1994, p. 362.
  11. Grimmer Flight 16 March 1916, p. 225.
  12. 1 2 Bruce 1965, p. 143.

Related Research Articles

The Aircraft Manufacturing Company Limited (Airco) was an early British aircraft manufacturer. Established during 1912, it grew rapidly during the First World War, referring to itself as the largest aircraft company in the world by 1918.

<span class="mw-page-title-main">Vickers F.B.5</span> Fighter aircraft; first operational purpose-built fighter

The Vickers F.B.5 was a British two-seat pusher military biplane of the First World War. Armed with a single .303 in (7.7 mm) Lewis gun operated by the observer in the front of the nacelle, it was the first aircraft purpose-built for air-to-air combat to see service, making it the world's first operational fighter aircraft.

<span class="mw-page-title-main">Polikarpov I-153</span> Type of aircraft

The Polikarpov I-153 Chaika was a late 1930s Soviet sesquiplane fighter. Developed from the I-15 with a retractable undercarriage, the I-153 fought in the Soviet-Japanese combats in Mongolia and was one of the Soviets' major fighter types in the early years of the Second World War. Three I-153s are in flying condition.

<span class="mw-page-title-main">Airco DH.5</span> Type of aircraft

The Airco DH.5 was a British First World War single-seat biplane fighter aircraft. It was designed and manufactured at British aviation company Airco. Development was led by aircraft designer Geoffrey de Havilland as a replacement for the obsolete Airco DH.2.

<span class="mw-page-title-main">Supermarine Nighthawk</span> Type of aircraft

The Supermarine P.B.31E Nighthawk was a British aircraft of the First World War and the first project of the Pemberton-Billing operation after it became Supermarine Aviation Works Ltd. It was an anti-Zeppelin night fighter operated by a crew of three to five and had a planned flight endurance of 9–18 hours. The prototype flew in February 1917 with Clifford Prodger at the controls. It proved to not meet the promised specification and no more were built.

<span class="mw-page-title-main">Nieuport Nighthawk</span> Type of aircraft

The Nieuport Nighthawk was a British fighter aircraft developed by the Nieuport & General Aircraft company for the Royal Air Force towards the end of the First World War. Although ordered into production before the aircraft first flew, it did not enter large scale service with the RAF owing to unreliable engines. Re-engined aircraft did see service in Greece, serving from 1923 to 1938.

<span class="mw-page-title-main">Vickers F.B.12</span> Type of aircraft

The Vickers F.B.12 was a biplane pusher fighter aircraft developed during World War I by Vickers Limited. The failure of the engine for which it was designed, and the obsolescence of the pusher configuration, resulted in its remaining an experimental type only.

The Sopwith Snapper was a prototype British fighter aircraft of the First World War. A single-engined biplane designed by the Sopwith Aviation Company to replace the Sopwith Snipe fighter, it first flew after the end of the war, but did not enter service owing to the failure of its engine, only three aircraft being 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.

<span class="mw-page-title-main">Norman Thompson N.1B</span> Type of aircraft

The Norman Thompson N.1B was a prototype British flying boat fighter aircraft of the First World War. A two-seat single-engined pusher biplane, a single example was built in 1917, but no production followed.

The Vickers E.F.B.8 was a prototype British twin-engined fighter of the First World War. It was abandoned after only one aircraft was built, single-engined fighters being considered to have superior manoeuvrability.

The Sopwith Gunbus was a British fighter aircraft of the First World War. It was a single-engined pusher biplane based on a floatplane built by Sopwith before the war for Greece. Small numbers were built and used by the British Royal Naval Air Service, mainly as a trainer.

<span class="mw-page-title-main">Royal Aircraft Factory F.E.9</span> Type of aircraft

The Royal Aircraft Factory F.E.9 was a prototype British two-seat fighter-reconnaissance aircraft of the First World War. A single-engined pusher biplane of 1917, the F.E.9 had poor performance and handling, and only three were built.

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.

The Royal Aircraft Factory C.E.1 was a prototype British flying boat of the First World War. It was a single-engined pusher configuration biplane intended to carry out coastal patrols to protect shipping against German U-boats, but only two were built, the only flying boats to be designed and built by the Royal Aircraft Factory.

<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.

<span class="mw-page-title-main">Vickers F.B.25</span> Type of aircraft

The Vickers F.B.25 was a British two-seat night fighter prototype of World War I designed to attack enemy airships. Completed in 1917, it failed in its official flight tests that year and no order for production resulted.

The Hanriot HD.6 was a French two-seat fighter aircraft prototype, built towards the end of World War I though not flown until after the armistice with Germany. A biplane with an unusually narrow gap between upper and lower wings, powered by a single water-cooled radial engine, it did not enter production.

The Weymann W-1 was a French single seat biplane fighter aircraft, built during World War I. It had a most unusual layout, with an engine buried in the fuselage driving a pusher configuration propeller behind a cruciform tail. It was not successful and soon abandoned.

<span class="mw-page-title-main">Caudron Type A</span> Early French fixed-wing aircraft

The Caudron Type A was the first successful aircraft built by René Caudron and his brother Gaston. During 1910 the Caudron brothers were briefly associated with the Société Anonyme Français d'Aviation (S.A.F.A.), and an example of the type was exhibited at the 1910 Paris Aero Salon as the S.A.F.A. Biplane.

References