RU2728950C1 - Autogyro for avia forest protection - Google Patents

Abstract

FIELD: aviation.SUBSTANCE: invention relates to aircraft engineering, particularly, to aircraft extinguishing means. Avia forest protection autogyro comprises a fuselage, a pilot cabin, a rotor, a chassis and a tail unit. Fuselage has a streamlined cigar-like shape, inside of which a turbofan engine is arranged behind the cockpit of the pilot, and outside the rotor is installed, which is fixed on bearing supports with possibility of rotation around the cockpit of the pilot. At that, rotor blades are washed by air jet outputting through outlet nozzle of air annular channel of turbofan engine.EFFECT: reduced drag, higher maneuverability.1 cl, 6 dwg

Description

The invention relates to the field of technical means intended for extinguishing fires, in particular to aviation means of extinguishing forest fires.

Known combat gyroplane A-7-3A (Stalin's combat autogyros. Kamov A-7-3. USSR. Https://topwar.ru/6880-boevye-avtozhiry-stalina-kamov-a-7-3-sssr.html . ). It consists of a truss fuselage, a propeller pulling motor, a high-strut rotor, a wheeled landing gear and a tail assembly.

The disadvantage of the known design of the gyroplane is a low-power piston engine, and the gyroplane also has a truss fuselage with an open cockpit, which causes laboriousness of its manufacture. In addition, the gyroplane has a non-streamlined shape, the rotor is on a high strut, which gives significant aerodynamic drag.

Known autogyro "Flyugegelrad-1 VI" magazine Youth Technique No. 12, 2000 (p. 31). The disadvantages of the known design are that the cockpit with the rotor is located directly above the turbojet engine, which increases the overall height of the apparatus. Also, the rotor blades are washed by hot gases coming out of the nozzle of the turbojet engine, which requires the use of expensive heat-resistant steels in the rotor design.

The gyroplane lacks a tail unit, which makes it unstable in flight on a course.

The technical result of the invention is to reduce drag, increase maneuverability, and reduce the cost of the gyroplane.

The specified technical result is achieved by the fact that the avialesoohrana gyroplane contains a fuselage, a pilot's cabin, a rotor, a landing gear, characterized in that the fuselage has a streamlined cigar-shaped shape, inside of which a turbofan bypass engine is located behind the cockpit, and a rotor fixed on bearing supports is located outside. with the ability to rotate around the cockpit, while the rotor blades are washed by a stream of air coming out through the outlet nozzle of the annular air channel of the turbofan engine, while the gyroplane contains a two-keel tail.

The essence of the invention is illustrated by drawings, where:

in fig. 1 shows a gyroplane of avialesokhrana, side view;

in fig. 2 - avialesokhrana gyroplane, top view;

in fig. 3 - aero-forestry gyroplane, front view;

in fig. 4 - autogyro of avialesoohrana, on floats, side view;

in fig. 5 is a diagram of the rotor of an avialesoohrana gyroplane rotating around the cabin;

in fig. 6 is a diagram of the action of the electric starter of an air forest protection gyroplane when the rotor is spinning up.

Aviation forestry autogyro consists of a fuselage 1 with a two-keel tail, a pilot's cabin 2, a turbofan engine 3 located behind the pilot's cabin, outside the pilot's cabin there is a rotor 4 on bearing supports 5, with the ability to rotate around the pilot's cabin 2, wheel landing gear 6, electric starter 7, storage battery 8, TV cameras 9, fuel tank 10, float landing gear 11, fan 12, annular air channel 13 with outlet nozzle 14, outlet nozzle of turbofan engine 15.

Moreover, in the embodiment of an autogyro for extinguishing a forest fire with a fire extinguishing liquid, instead of the wheeled chassis 6, floats 11 can be installed. In this case, the floats 11 can be used as containers for water intended for extinguishing forest fires.

The gyroplane operates as follows: the pilot of the gyroplane starts the operation of the starter 7, which is powered by the storage battery 8. The starter, upon contact with the rotor 4, starts to spin it. At the same time, the turbofan engine 3 is switched on. The air required for the operation of the turbofan engine 3 is taken from the inlet. This air flow is divided into two parts, which go around the cockpit 2. Then, before reaching the fan blades 12, both air flows converge. Further, the air flow is divided into two parts: one part thrown by the blades of the fan 12 goes through the annular air channel 13 and exits through the nozzle 14, while continuing to spin the rotor 4. Another part of the air enters the housing of the turbofan engine 3 and exits with a jet stream through the nozzle 15 creating horizontal thrust.

After a short run, the aircraft takes off. The pilot, driving from cockpit 2, is observing, recording forest fires through television cameras 9.

In the float version, the avialesoohrana gyroplane, moving along the water surface, fills the floats 11 with water, which will be poured onto a forest fire.

The proposed technical solution uses a more powerful and more economical turbofan engine. The proposed gyroplane has a streamlined cigar-shaped fuselage with a cockpit closed with a transparent hood. The height of the gyroplane has been significantly reduced due to the absence of the rotor strut, since in the proposed solution the rotor is fixed on hinged supports and rotates around the cabin. The rotor is blown by a jet of air coming from a fan, a dual-circuit turbofan engine. The gyroplane also has a two-keel tail unit with two vertical washers with rudders.

A positive result from the use of an avialesoohrana gyroplane is achieved by the high efficiency of detecting and extinguishing forest fires. In addition, such gyroplanes do not need specially prepared runways, since they have a short take-off distance. The use of turbofan engines in the design makes it possible to increase the power supply and maneuverability of aircraft.

Literature

1. Fighting autogyros of Stalin. Kamov A-7-3. THE USSR. https://topwar.ru/6880-boevye-avtozhiry-stalina-kamov-a-7-3-sssr.html .

2. Scandalous scheme-3: under the sign of the swastika / Technology of youth, No. 12, 2000. - P. 31-37.

Claims (1)

Avialesoohrana autogyro, containing a fuselage, a pilot's cabin, a rotor, a landing gear, characterized in that the fuselage has a streamlined cigar-shaped shape, inside which a turbofan double-circuit engine is located behind the cockpit, and outside there is a rotor fixed on bearing supports with the ability to rotate around the pilot's cabin, when In this case, the rotor blades are washed by a stream of air exiting through the outlet nozzle of the air annular channel of the turbofan engine, while the gyroplane contains the tail.

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