Ryan "ST" Series
Model Airplane News Cover Art for November, 1959 and July, 1967
by Jo Kotula
ST- M is shown on the November 1959 cover
ST- A is shown on the July, 1967 cover
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The Ryan "ST"series of two seat, low wing monoplane aircraft were used as sport aircraft, as well as trainers by flying schools and the military of several countries.T. Claude Ryan the development of the ST (for "Sport Trainer", and also known as S-T) in 1933.

     

Ryan STM
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The "ST" featured two open cockpits in tandem in a metal semi-monocoque fuselage and wings of hybrid construction; aluminum sheet was used to form the leading edges, and fabric covered the whole structure. In 1937 the ST-A Special was developed into a military version, denoted "STM." Changes included wider cockpits to enable military pilots to enter and exit while wearing parachutes, and provision for a machine gun on some examples. Variants in the series included the STM-2P single-seat version armed with a machine gun delivered to Nationalist China; and the STM-S2, which could be fitted with landing gear or with floats (as shown on the cover).

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