Bratukhin G-3 / AK
The third Bratukhin helicopter was based on the Omega / G-2 but planned from outset for operational use by VVS as AK (Artilleriiskii Korrektirovshchik - artillery correction). There were no significant differences apart from more powerful, imported, engines. Two prototypes ordered in 1944 and first flown in 1945. On completion of State trials in 1945, a batch of ten Aks were ordered. Soviet histories mention only original two prototypes as having flown. A single AK delivered to VVS with dual control for training helicopter pilots.