The A-90 Orlyonok ("Eaglet") is a Soviet ekranoplan (a ground effect vehicle) that was designed by Rostislav Evgenievich Alexeyev of the Central Hydrofoil Design Bureau. The A-90 uses ground effect to fly a few meters above the surface. The Russians classify it as Ekranoplan Class B - it can achieve an
altitude of 3,000 m (9,800 ft), placing between Class A - which is limited to ground effect, and Class C, which exploits the ground effect only during take-offs and landings.
