Kamov Ka-37

The Kamov Ka-37 is an unmanned helicopter built by Kamov with coaxial rotors and a 45 kW engine. It was designed for aerial photography, television and radio broadcasting, and for delivering medicines, food and mail, as well as emergency aid in disasters or hard and dangerous environments, and later for several military roles. The operator can work from a vehicle fitted with monitors and flight controls, or use a simple hand-held radio controller. The source lists a maximum take-off weight of 250 kg, an economic cruising speed of 110 km/h, a payload of 50 kg and an endurance of 45 minutes.