"TAILLESS" FLARECRAFT Russian patent published in 2022 - IPC B60V3/00 B60V1/08 

FIELD: automotive industry.

SUBSTANCE: invention relates to dynamic air cushion vehicles, in particular to flarecraft (FC). The FC is made according to the aerodynamic scheme "composite wing - tailless" and the "catamaran" hydrodynamic scheme. The composite wing of the FC consists of a center section and consoles docked to the center section along its end ribs. Two displacement floats are attached to the center section from below along its end ribs. The center section is provided with side bulges protruding upwards above its upper surface, located along its end ribs aft from the hump of its S-shaped profile. The consoles are docked to the upper parts of the aft sections of the side influxes of the center section and are equipped with flaps, elevons and vertical fins at their ends. The aft end of the projection of the average aerodynamic chord (AAC) of the consoles on the diametrical plane of the FC coincides with the aft end of the similar projection of the AAC of the center section or is located aft of it. The upper surfaces of the left and right parts of the center section have, each, a smooth "spoon-shaped" shape concave in cross section with a gradually increasing depth, as it approaches the tail edge of the center section, reaching in the plane of rotation of the aerial propeller (AP) installed in this place, approximately equal to its radius. From above, each explosive is covered by a semi-annular arch with an aerodynamic profile traditional for annular explosive nozzles and is equipped with an array of controlled vertical rudders installed behind it. Each float of the FC is made in the form of a rigid asymmetric body, equipped with a longitudinal bottom ski adjoining its outer side, and also adjacent to it, with a ledge in height, a unilaterally keeled sharp-chine gliding bottom, equipped with transverse bottom redans, passing on the inner cheekbone of the float into transverse side steps with interlocked cavities communicating with the interred cavities of the corresponding bottom redans. The system for pumping compressed air into the sub-center section of the FC includes at least two air fans installed side-by-side inside its center section with drives, each from the corresponding main engine with air intakes installed on the corresponding side sections of the upper surface of the FC center section, located directly behind the hump of its S-shaped aerodynamic profile, and outlet nozzles located on the vertical walls of the transverse bottom steps of the floats. The system for pumping compressed air into the sub-center section of the FC includes at least two air fans installed side-by-side inside its center section with drives, each from the corresponding main engine with air intakes installed on the corresponding side sections of the upper surface of the FC center section, located directly behind the hump of its S-shaped aerodynamic profile, and outlet nozzles located on the vertical walls of the transverse bottom steps of the floats.

EFFECT: improving the operational and technical characteristics of the FC.

10 cl, 21 dwg