Polikarpov DI-1

Polikarpov DI-1

Jesse Russell Ronald Cohn

     

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ISBN: 978-5-5106-5326-7

High Quality Content by WIKIPEDIA articles! Polikarpov DI-1 (also known as 2I-N1, Russian: Поликарпов ДИ-1 (2И-Н1)) was a prototype Soviet two-seat fighter designed during the 1920s. The sole prototype built crashed on its ninth flight, due to manufacturing defects, and the program was cancelled.

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