FUSELAGE OF LIGHT HELICOPTER Russian patent published in 2008 - IPC B64C1/00 B64C27/04 

FIELD: engines and pumps.

SUBSTANCE: fuselage of a light helicopter comprises frame of the middle part, frame of the rear part with a compartment for at least one engine (10), undercarriage, main reducer (28), and also set of reinforcing transverse-longitudinal components of each portion of the fuselage with a covering, whicform an outer contour of a helicopter. The frame of the middle part is assembled of two reinforced ribs (11, 12) and three panels attached to them (13, 14, 15), at that ribs are assembled with their planes inclined to each other so, the distance between the upper portions of the ribs is lower than the distance between the lower portions. Two of the said panels are located in planes close to horizontal? At that one of the panels (13) is located along the full length of the fuselage at the overall crew cabin floor and shipping compartment level; while the second panel (14) is located at the reinforced ribs upper portion levels and is elongated overhang forward from the reinforced ribs and backward from them along the full length of rear portion of fuselage frame; the third panel (15) is made with its length equal to the length of the first panel (floor) and orthogonal connected to it in a lengthwise plane symmetry of a sub floor portion of the fuselage.

EFFECT: invention provides durability and accident safety of design.

5 cl, 8 dwg