ANT-17, ANT-18, TSh-1, TSh-B by AGOS
ANT-17(TSh-1,TSh-B) and ANT-18 were under development in the AGOS, as modifications of R-6/ANT-7 twin-engine multipurpose aircraft. Aircraft planned to carry crew of four with total armour weight 1000kg, only 300kg used as active elements of airframe. Armour supposed to protect crew and (partially) engines with radiators.
4*mg 7.62mm DA (gunners)
4*mg 7.62mm PV-1 (wing)