In 1928, the design bureau led by Nikolai Nikolaevich Polikarpov produced the R-5 to replace the R-1, an unlicensed copy of the Airco DH.9A, which was the Soviet Union's standard light reconnaissance aircraft/bomber.
Like the R-3, the new design, the ANT-10 was a single-engined sesquiplane with a duralumin structure, but with a much larger upper wing (based on that of the I-4 fighter).
[1] The ANT-10 (which received the Soviet Air Force designation R-7) made its first flight on 30 January 1930,[2] but its performance was little better than the R-5, while the R-5's wooden structure was advantageous at a time of metal shortages.
[2] Data from Tupolev: The Man and His Aircraft[3]General characteristics Performance Armament
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