The Mil Mi-54 was a projected twin-turbine civil utility helicopter, first announced in 1992, intended to replace the Mi-2 and the Mi-8 helicopters. It was planned to use two 574 kW Saturn/Lyulka AL-32 turboshaft engines, four-bladed main and tail rotors, and fixed tricycle-type landing gear with one nosewheel and two rear wheels on sponsons.
https://www.aerospace-technology.com/projects/mil-mi-54-transport/