The Il-78 aircraft has been developed on the basis of the Il-76MD and is designed to refuel in the air long-range aircraft and frontline aviation during daytime and nighttime, andin conditions of poor visibility, in order to widen their operational range. TheIl-78 may be used for transporting fuel to the maneuvering airfield and refueling aircrafton the ground.
The cargo compartment contains two fuel tanks. With the help of three unified suspended-type refueling devices (UPAZ) installed under outer wing panels and in the aft part of the fuselage, the transmission of fuel from fuselage tanks and wing boxes is possible.
If necessary, the aircraftcan be refitted under field conditions as a transportation plane for carrying military personnel, equipment, cargoand ill/wounded people.
Main technical characteristics
Dimensional characteristics Length, m 46,6 Height, m 14,76 Wingspan, m 50,5 Wing area, sq. m. 300 Fuselage diameter, m 4,8 Power plant parameters
Number x engine type 4 x turbojet engine Engine
D-30KP series 2 Top thrust (SI system, H=0), kgf 12 000 Weight parameters
Maximum takeoff weight, tons 190 Fuel tank capacity, l 109 500 wing tanks
36 000 fuselage tanks
Fuel delivered (takeoff from IVPP)
Fueling limit for distance of 1,000 km, tons 69.2 Fueling limit for distance of 2,000 km, tons 50 Fueling limit for distance of 2,500 km, tons 20.7 Aircraft performance
Cruising speed, km/h 750 (440-600 with refueling) Flight altitude, m 12 100 Takeoff distance, m 1 700 Landing distance, m 930 Number of seats
Crew, persons 6 Specified life
Calendar operating life, years 35 Number of flights 6 000 Number of flight hours, hr. 8 000