The project aims at researching advanced aircraft technologies to replace the An‑124 Ruslan long-range heavy transport aircraft. The Slon will be used for transporting heavy and large-size freight for about 7000 km at 850 kph. The required length of the runway is 3 km.
the runway is shorter. the aircraft has winglets.
raft specifications call for transportation of heavy outsized cargo loads at a distance of 7,000 km (3,778 nautical miles) at a cruise speed of 459 kt with takeoffs and landings on runways as short as 9,843 feet. The maximum commercial payload capacity totals 180 tonnes, or one-third more than the respective figure for the An-124-100 (120 tonnes). The increase results from the intended use of the PD-35 turbofan, which produces nearly 50 percent more thrust (35 tonnes) than the Ivchenko-Progress/Motor Sich D-18T on the Ruslan.
As a result of the third iteration, TsAGI has introduced a number of corrections from the previous Slon layout. The most significant change involves an enlarged fuselage cross-section to accommodate bulkier cargo loads.