The Kamov Ka-226 manufactured by Kamov is a Russian light, twin-engine multi-role helicopter developed from Kamov Ka-126. The Kamov Ka-226 features an interchan…
Kamov Ka-15, Ka-25, Ka-26, & Ka-27
Kamov Ka-15, Ka-25, Ka-26, & Ka-27
Kamov Ka-126, Amodel 7272 (2003)
KA-126 helicopter | Sputnik Mediabank
aerodynamics - Why aren't contra-rotors used on the V-22 Osprey? - Aviation Stack Exchange