The Zhukovsky Institute has patented a new non-adjustable air intake design for future supersonic civil aircraft. Registered as RU 245823 U1, the patent was published by Rospatent on September 7, 2026, following an application filed on June 4.
The design replaces traditional variable-geometry systems with a fixed structure to reduce weight and simplify the engine installation. It features a two-stage supersonic airflow braking system that creates three distinct shock waves: flat oblique, conical, and terminal.
The air intake utilizes a teardrop-shaped cross-section, which facilitates integration between the wing and fuselage. The length of the air duct is specified as three to five times the diameter of the engine intake, allowing for a smooth transition to the engine's circular inlet.
To manage the boundary layer, particularly for engines mounted above the wing or fuselage, the system includes a top-section cutout and a bottom-section suction slot. This configuration aims to prevent airflow separation and maintain engine stability across all flight modes.
