ULTRA-LIGHT OR LIGHT HELICOPTER-TYPE AIRCRAFT OF MODULAR DESIGN Russian patent published in 2023 - IPC B64U20/40 B64C27/04 B64C1/06 

FIELD: aviation.

SUBSTANCE: invention relates to the designs of helicopter-type aircraft. An ultra-light or light helicopter-type aircraft of a modular design contains a fuselage of a frame structure made in the form of separate structural modules, which includes a central nose and tail sections, a power unit, a main gearbox for driving the blade rotor shaft, a mast with at least one blade rotor and a shaft for its rotation and landing gear in the form of skis attached to the fuselage. The fuselage is made non-demountable and consists of rod elements. The central part is made with a tray-shaped bottom. The tail section is made with vertical stabilizers. The bow part is made in the form of two trapezoidal frames with a common base of shorter length, one frame of which is inclined towards the bottom, and the larger base of the other, inclined towards the tail part, is connected to the rods of the tail part. The power block module is configured to be placed in relation to the location of the main gearbox structural module on the side of the bow or on the side of the tail.

EFFECT: expansion of variability is ensured by changing the layout of the structural modules of the main units of the UAV or PAV.

9 cl, 3 dwg