Written and officially approved for publication in 1939, this little Russian-language book appeared in print in 1940. It is largely confined to the presentation of plans and instructions for building the PP-4 spark ignition motor (bore 19.5 mm, stroke 19.5 mm, displacement 5.82 cc), which was closely based upon the design of the 0.364 cuin. (5.96 cc) Baby Cyclone of 1935 from the USA. By way of open acknowledgement, a photograph showing the Baby Cyclone actually appears as an illustration in the book. The engine is thus an early Russian “clone”, of which many more were to appear later.

The engine was certainly in existence by 1937, since it won a contest during that year. It is not known whether or not it was ever produced in series. Russia’s entry into WW2 in June 1941 would have put an end to any such venture in any case.

The book contains relatively little material of any historical interest, hence the incomplete translation. Nonetheless, it does include some indications regarding the state of Russian aeromodelling in the years leading up to WW2. Accoringly, an edited English translation is made available here in pdf format for anyone interested.