M-90

Experimental radial engine, one among those abandoned on the eve/outbreak of the Nazi invasion in favour of few less powerful, but reliable (and mass-built) engines. Abandonment of M-90 brought down several aircraft project relying on its power.

M-90	1938- 1941?	?	1100hp,1425hp,1500hp? 1750hp on takeoff	I-185 I-195 OPB-5 ShB
M-90-?	?	?	2100hp?	I-28, I-287 Su-4 ShB

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