The “Eaglet” was, maybe, not the more espectacular of the Soviet ekranoplans (ground effect aircraft), but in my humble opinion is the sleekest and the more charming. This amphibious ekranoplan was designed as transport, specially for beach assault operations. Sadly, like others of its gender only a few (5) were built.
This drawing depicts beautifully the engine configuration of the A-90. Cruise power was provided by the mighty Kuznetsov NK-12MV turboprop placed high in the tail. The aircraft also carried a pair of Kuznetsov NK-8-4K turbofan engines inside the forward fuselage fed by a pair of nose intakes. The exhaust of those turbofans were along the side of the fuselage and its thrust was defected under the wings to produce the necessary increased lift and power for take-offs.
Arwork from “The Threat In The 1980s” DIA exhibit.