PWS-8
The PWS-8 was a Polish sports plane of 1930, constructed by the Podlaska Wytwórnia Samolotów (PWS), that remained a prototype.
Design and development
The plane was designed in 1929 by Jarosław Naleszkiewicz in Podlaska Wytwórnia Samolotów, on factory's initiative, to participate in the Challenge 1930 international touring aircraft contest (with PWS-50, PWS-51 and PWS-52). It was a wooden biplane, partly modelled after de Havilland Gipsy Moth. Its unique feature, taken from earlier PWS military aircraft, like PWS-5, were N-shaped struts between lower and upper wing and additional oblique transverse struts, stiffening the design, instead of wire braces (similar bracing to Handley Page Gugnunc).
The plane was first flown in 1929/1930 by F. Rutkowski, with Armstrong Siddeley Genet 80 hp radial engine. In spring of 1930 it was modified, with Walter Vega 85 hp radial engine, also a tailfin shape and some other details were changed. It was however too heavy for engines used (65 kg heavier, than designed).
