RU2268841C2 - Helicopter fuselage (versions) - Google Patents

Abstract

FIELD: aviation; helicopter construction.

SUBSTANCE: proposed helicopter fuselage includes nose and central sections and tail boom interconnected by means of attachment frames; each of them includes framework made from interconnected spars, stringers, frames and skin, partition separating the nose section from central one. Cargo cabin in central section of fuselage is bounded by panels, load-bearing floor, ceiling and cargo hatch made at angle relative to cross-sectional plane of fuselage forming smooth outline of tail compartment in closed position. Pilot cabin with movable seats is located in nose section. Mounted before attachment frame in nose fuselage is additional frame forming wells for backs of movable seats together with partition and instrument compartment. Floor side of cargo hatch is shifted in way of tail boom. Extreme frame of tail compartment embracing the load-bearing floor of fuselage is connected with floor side of cargo hatch, thus forming panels of cargo cabin together with skin which is necessary for longitudinal centering of helicopter. Apertures for emergency hatch and/or window are additionally provided in panels between frame in front of cargo hatch. Emergency hatch is provided with window.

EFFECT: increased volume of fuselage cargo cabin; ease of helicopter control.

4 cl, 1 dwg

Description

The invention relates to aviation and can be used in the construction of helicopters.

Known helicopter fuselage containing a frame consisting of a power set of reinforced and normal frames, longitudinal beams and stringers, panels and smooth working skin. In the rear compartment of the fuselage, an opening of the cargo hatch with a ramp is made. When the cargo hatch is closed, the ramp is connected to an inclined frame mated at the bottom with the rear end frame at floor level and at the top with the superstructure frame at the transition to the tail boom, which forms the opening of the cargo hatch. An additional frame is made over the inclined frame, the frames of which are coupled below with the inclined frame and above with arched frames of the superstructure, and are interconnected by stringers and smooth working skin. The inclined frame is horseshoe-shaped, the outer contour of the sides of which is interfaced with the side panels with a smooth working skin with a smooth aerodynamic contour (Patent RU No. 2196704 C1. Helicopter fuselage. - Ministry of Internal Affairs: В 64 С 1/00, 1/06, 1/22. - Bull. No. 2, 01.20.2003). This invention is taken as a prototype.

A disadvantage of the known technical solution adopted for the prototype is the limited operational capabilities and amenities of controlling a helicopter.

The problem to which the claimed invention is directed, is to expand the operational characteristics of the helicopter.

The technical result achieved using the proposed invention is to increase the volume of the cargo compartment of the fuselage and expand the convenience of controlling a helicopter.

The specified technical result is achieved by the fact that in the known fuselage of the helicopter, including the nose and central parts and the tail beam, interconnected by connecting frames, each of which contains a frame of interconnected spars, stringers, frames and casing, a partition separating the nose from the central, in the latter contains a cargo compartment with a tail compartment, bounded by side panels, a power floor, a ceiling and a cargo hatch made at an angle to the plane of the fusel cross section Ms forming and smooth contours of the tail section in the closed position, while in the forward fuselage cockpit is fitted with the floor pilot seats, according to the proposed technical solution:

an additional frame is installed in the nose of the fuselage in front of the docking frame, forming together with the partition a niche for shifting the backs of the mobile seats of the pilots and the instrument compartment, and / or the floor side of the cargo hatch is biased towards the tail boom, for which the extreme frame of the tail compartment is made with coverage the body floor of the fuselage and connected to the floor side of the cargo hatch, forming with the skin side panels of the cargo compartment, providing with the bow of the longitudinal alignment of the helicopter;

in the side panels between the frames in front of the cargo hatch, additional openings for the emergency hatch and / or porthole are made;

the porthole is made in the emergency hatch.

The analysis of the prior art cited by the applicant made it possible to establish that there are no analogs characterized by sets of features identical to all the features of the claimed technical solution. Therefore, the claimed technical solution meets the condition of patentability "novelty."

The search results for known solutions in the art in order to identify features that match the distinctive features of the prototype of the features of the claimed technical solution have shown that they do not follow explicitly from the prior art. From the prior art determined by the applicant, the influence of the transformations provided for by the essential features of the claimed technical solution on the achievement of the specified technical result has not been revealed. Therefore, the claimed technical solution meets the condition of patentability "inventive step".

The presented figure shows a diagram of the fuselage of the helicopter, side view.

The fuselage of the helicopter includes interconnected bow 1 and central 2 parts and a tail boom 3, each of which contains a frame of interconnected spars, stringers, frames and lining. In the nose of the fuselage there is a cockpit of 4 pilots with 5 movable seats 6 mounted on the floor 5 and a partition 7 separating the bow 1 of the central 2, the latter forms the cargo compartment 8, limited by the side panels 9, the power floor 10, the ceiling 11 and the cargo hatch 12, located at an angle α to the plane 13 of the cross section of the fuselage and forming in the closed position a smooth contour of the tail section 14. In front of the docking frame No. 5H / 1 connecting the central 2 part of the fuselage with the bow 1, the latter additionally installed Yen frame No. 4NA, forming together with the partition 7 niches 15 for shifting the backs 16 of the mobile seats of 6 pilots and the instrument compartment 17 of the helicopter. The frame No. 14 of the tail section 14 of the central 2 part of the fuselage is made with a force floor 10 and connected to the floor side 18 of the cargo hatch 12, forming with the skin side panels 9 of the fuselage, which provide with the additional frame No. 4NA in the bow the longitudinal alignment of the helicopter. In the side panels 9 between the frames No. 11 and No. 13 of the tail section 14, additional openings for the emergency hatch 19 and / or the porthole 20. In the emergency hatch 19, a porthole 20 is made.

According to the presented scheme, the helicopter fuselage operates as follows. In the process, mobile seats 6, if necessary, are moved in the cockpit of 4 pilots from the extremely forward position intended for manual control of the helicopter, to the extremely rear position with the backs 16 in the niches 15 and the instrument compartment 17 of the helicopter, formed with a partition 7 separating the bow 1 from the central 2. At an angle α to the plane 13 of the cross section of the fuselage, there is a cargo hatch 12, which in the closed position forms a smooth contour of the tail section 14, for which a frame No. 14 of the tail section 14 of the central 2 part of the fuselage made with the coverage of the power floor 10 and connected to the floor side 18 of the cargo hatch 12, forming with the skin side panels 9 of the fuselage, which provide with an additional frame No. 4NA in the bow 1 longitudinal alignment of the helicopter. In the side panels 9 between the frames No. 11 and No. 13 of the tail section 14, additional openings for the emergency hatch 19 and / or the porthole 20. In the emergency hatch 19, a porthole 20 is made.

According to this invention, design documentation for the helicopter fuselage is developed.

Claims (4)

1. The fuselage of the helicopter, including the nose and central parts and the tail beam, interconnected by docking frames, each of which contains a frame of interconnected spars, stringers, frames and casing, a partition separating the nose from the central one, the cargo compartment with the tail section is located in the latter bounded by side panels, power floor, ceiling and cargo hatch, made at an angle to the plane of the fuselage cross section and forming a smooth contour of the tail section in the closed position In this case, in the bow of the fuselage there is a cockpit with pilot seats mounted on the floor, characterized in that in the bow of the fuselage in front of the docking frame an additional frame is installed, which forms, together with the partition, a niche for shifting the backs of the pilot seats and the instrument compartment. 2. The fuselage of the helicopter, including the nose and central parts and the tail beam, interconnected by docking frames, each of which contains a frame of interconnected spars, stringers, frames and casing, a partition separating the nose from the central one, the cargo compartment with the tail section is located in the latter bounded by side panels, power floor, ceiling and cargo hatch, made at an angle to the plane of the fuselage cross section and forming a smooth contour of the tail section in the closed position in this case, in the nose of the fuselage there is a cockpit with pilot seats mounted on the floor, characterized in that the floor side of the cargo hatch is offset in the direction of the tail boom, for which the extreme frame of the tail compartment is made to cover the power floor of the fuselage and connected to the floor side of the cargo the hatch, forming with the lining the side panels of the cargo compartment, which provide with an additional frame in the bow the longitudinal alignment of the helicopter. 3. The fuselage according to claim 2, characterized in that in the side panels between the frames in front of the cargo hatch, openings for the emergency hatch and / or porthole are additionally made. 4. The fuselage according to claim 3, characterized in that a porthole is made in the emergency hatch.