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Nash and Thompson Limited


Nash & Thompson was a British engineering firm that developed and produced hydraulically operated gun turrets for aircraft. As part of Parnall Aircraft it was also an important manufacturer of hydraulic-powered radar scanners used on radar systems such as H2S and AI Mark VIII.

Nash & Thompson was established in 1929 at Kingston upon Thames by business partners Archibald Goodman Frazer Nash and Esmonde Grattan Thompson

Nash & Thompson developed the hydraulic gun turrets that Frazer-Nash invented and his designs were consequently numbered in a series prefixed with "FN".

In May 1935 they formed Parnall Aircraft taking over George Parnall & Company and Hendy Aircraft Company. Thompson was appointed managing director and Frazer Nash technical director.

The company's major competition in the UK was from Boulton & Paul, which had licensed the designs of the French company S.A.M.M. (Societe d'Application des Machines Motrices). The FN turrets used hydraulic power produced by the aircraft's engine: the BP designs used individual hydraulic pumps for each turret supplied from the aircraft's 24 volt electrical system.

Nash & Thompson built a wide range of turrets for aircraft. All were powered hydraulically and carried 0.303 inch (7.7 mm) Vickers K or Browning machine guns, except where noted. Many were built by Parnall Aircraft with which they merged in 1935.


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