STRUCTURAL POWER LAYOUT OF AN AIRFRAME OF A STEALTH SINGLE-ENGINE AIRCRAFT Russian patent published in 2023 - IPC B64C1/06 

FIELD: aeronautical engineering.

SUBSTANCE: invention is related to structural power layout (SPL) of single-engine aircraft airframes. SPL of the airframe contains an internal power set, consisting of longitudinal and transverse elements, as well as external fuselage contours, including skin with opening flaps. The transverse elements include load-bearing and standard frames arranged parallel to each other and connected by longitudinal elements, which include the walls of the cargo compartments, the walls of the niches of the landing gear and the walls of the fuel tanks. Structurally, the SPL of the airframe is divided into the head, middle and tail parts of the fuselage. Moreover, the air intake channel is formed by frames of the middle part of the fuselage and contains side walls, the upper horizontal surfaces are formed by the walls of the fuel tanks, and the lower surfaces are formed by the walls of the cargo compartment. The power frames of the internal power set are made of titanium alloys, and the remaining parts of the internal power set are made of aluminium alloys. The skins of the head part of the fuselage and the middle part of the fuselage are made of aluminium alloys, and the outer skins of the tail part of the fuselage are made of polymer composite materials in form of carbon fibre honeycomb panels.

EFFECT: reduction in airframe weight is achieved with high manufacturability.

5 cl, 2 dwg