CN1880170A - Active control technology for helicopter hull rotation - Google Patents

Abstract

The invention relates to a round helicopter, wherein present helicopter needs annular electromagnetic nozzle to eject gas to generate torque to balance the helicopter; in said invention, it mounts reverse rotation axle and two-stage decelerator under the main axle of semi-circle frame; the output axle of two-stage decelerator via flange disk is fixed at the center of bottom plate; the main swing and the decelerator are linked, to reduce the self-rotation speed of helicopter, and reduce the power, volume, and weight of air compressor. And the invention can reduce the rotation speed when falling, to reduce the accidence.

Description

The active control technology of helicopter hull rotation

Affiliated technical field:

The invention belongs to the aircraft industry technical field, particularly a kind of  rises the active control technology of aircraft flight middle machine body rotation.

Background technology:

At present, known  rises aircraft and mainly is made up of fuselage, driving engine, main rotor, alighting gear, tail boom and tail-rotor.When the lift of driving engine drive main rotor rotation generation rose the machine full weight greater than ,  rose machine and just flies away from ground.And when the main rotor dish turned forward,  rose just flight forward of machine.But main rotor can make fuselage gyrate to the antagonistic force of fuselage, causes the uncontrollable heading of aviator, for this reason, usually adds rotation and the control heading that tail boom and tail-rotor come the balance fuselage at afterbody.

A kind of " garden shape  rises aircraft " (number of patent application: 200510018333.8) occur is arranged again in recent years, it overcomes hull rotation is by the ring installing air storage of garden under semisphere fuselage ring jar, several hoop electromagnetic valves on being installed in air storage ring jar are chewed level and hoop when jet, and it will produce rotation and the heading that a reactive torque removes to control fuselage to fuselage.

Usually control  rises the 6-12% that power that the machine hull rotation consumed accounts for the driving engine gross horsepower, therefore known  rises aircraft tail-rotor  through still bigger, collide trees, massif and building and cause aircraft accident easily when low-latitude flying; And that garden shape  rises machine is bigger because of jet amount, and the bigger air storage ring jar of more high-performance air compressor and volume then will be installed, and therefore the technology that control  is risen the rotation of aircraft flight middle machine body still is worth further research and improvement.

Summary of the invention:

In order to overcome the above-mentioned shortcoming that existing  rises aircraft, the invention provides a kind of circular  that is mainly compact conformation and rise the used  of aircraft and rise the active control technology of airframe rotation.For convenience of description, the component part numbers in the Figure of description of the present invention still adopts " garden shape autogyro " (number of patent application: the numbering 200510018333.8), newly-increased parts is then newly added numbering.

The technical solution adopted in the present invention is as follows:

Fig. 1 is the longitudinal diagram that adopts the circular autogyro of the technology of the present invention

Fig. 2 is the planar view that adopts the circular autogyro of the technology of the present invention

1. main rotors among the figure, 3. fuselage, 9. gear, 10. retarder, 11. power-transfer clutchs, 12. driving engines, 13. base plate, 14. belts, 15. air compressors, 16. non-return valve, 17. air storage ring jars, 18. hoop electromagnetic valves are chewed, 22. main shaft, 29. rotor packings, 64. flanges, 65. the fuselage reversing shaft, the present invention is further described below in conjunction with accompanying drawing 1 and Fig. 2 for 66. two-stage reduction gears (or stepless speed reducer):

Under hemispherical fuselage 3 inner main axis 22, fuselage reversing shaft 65 of at right angle setting, this axle Main shaft 22 axle center of the main rotor of axle center and its top are on same straight line. Install fuselage reversing shaft 65 upper ends Gear 9, its lower end is installed two stage reducer 66, and the output shaft of two stage reducer 66 is mounting flange 64 again, This ring flange 64 is fixed on the heart place, garden of the base plate 13 of fuselage 3 again with the coin bolt.

Like this, when engine 12 drives decelerators 10 gear of output end by belt 14 and clutch 11, again Driving its upper and lower two gears 9 rotates. The tooth of top turns to 9 and drives main shaft 22, rotor packing 29 and main revolving The wing 1 rotates. And the tooth of below turns to 9 by fuselage reversing shaft 65, two stage reducer 66, ring flange 64 drives Base plate 13 rotations of fuselage 3 namely drive fuselage 3 towards the direction rotation of resistance helicopter rotation, therefore adopt Can make greatly reducing from rotary speed of helicopter with the technology of the present invention, but owing to helicopter is subjected to from rotary speed Various factors and changing is not a constant, and its remaining hull rotation differential then still will adopt " garden The shape helicopter " be installed in ring on the air storage ring tank 17 in the patent and chew 18 to magnetic valve and jetly come balance, people As long as control ring is chewed the fuselage that the spray amount size of 18 high pressure air just can control helicopter and is put down to magnetic valve Weighing apparatus and heading.

Owing to adopt subtracting greatly from rotary speed of the technology of the present invention rear body, thus the power of air compressor 15 and Capacity and the weight of volume and weight, air storage ring tank 17 all can subtract greatly, and it is hot-tempered also can to reduce some flights simultaneously Sound. In addition, when the parking of engine 12 faults took place, " garden shape helicopter " is unpowered will to enter main revolving The wing 1 spin counter-rotating degeneration state. Conventional helicopters is in rake's progress, and the reversed spin speed of fuselage is very big, Make the people be difficult to recognize direction, but adopt " garden shape helicopter " fuselage of the technology of the present invention because double reduction is arranged Device 66 output shafts are installed on the fuselage base plate 13 by ring flange 64, and two stage reducer 66 input axle and masters Between the rotor 1 continuous action relation is arranged, therefore in helicopter main rotor spin counter-rotating degeneration state, fuselage oppositely certainly Rotary speed can be little more a lot of than conventional helicopters, and this helps and helps the person of controlling to recognize direction and selection in the degeneration state The helicopter of safety falls on the ground a little. Add and also have pneumatic bullet umbrella device, life saving air bag, lifesaving ring air cushion, rescue Give birth to the safety measure actings in conjunction such as chair, make and adopted " the garden shape helicopter " of the technology of the present invention to go straight up to than tradition The aircraft safety and reliability is many. Therefore the technology of the present invention has stronger practicality, is particularly useful for safety is wanted Ask " the garden shape helicopter " of very high having " aerial car " function (seat 4 to 5 people).

In addition, the technology of the present invention also is suitable for for existing light-duty single rotor helicopter, as for medium-sized and large-scale autogyro, if allow over against below, rotor packing center a vertical fuselage reversing shaft 65 and two-stage reduction gear 66 (may influence the use in space in the cabin) to be installed in the cabin, then also can adopt the technology of the present invention.

If two-stage reduction gear 66 changes " stepless speed adjusting gear " with function of stepless speed regulation is installed, then " garden shape autogyro " can not need to adopt hoop to spray compressed-air actuated method to come balance fuselage and heading, but air compressor 15, non-return valve 16 and air storage ring jar 17 still should keep as life saving air bag and lifesaving ring air-sprung high-pressure air source, but the power of these equipment, volume and weight be can reduce a lot.

Also need to prove in addition and under principle of the invention prerequisite, can also make some improvement and distortion, but this belongs to protection scope of the present invention equally the present invention for one of ordinary skill in the art.

Claims (2)

1, a kind of active control technology of helicopter hull rotation, it is characterized in that in fuselage main rotor main shaft below install can with the fuselage reversing shaft and the two-stage reduction gear of main shaft interlock, the two-stage reduction gear output shaft is fixed on the fuselage base plate by flange again, thereby the in-flight rotation of fuselage is significantly reduced.

2, the active control technology of helicopter hull rotation according to claim 1, it is characterized in that: the driving engine that is installed in the fuselage equipment compartment rotates by the gear that belt and power-transfer clutch drive the retarder end, and this gear had both driven main shaft and the main rotor rotation that is positioned at fuselage vertical center line top; Drive the output shaft rotation of another two-stage reduction gear again simultaneously by the fuselage reversing shaft, this output shaft also is positioned on the vertical center line of main shaft, and is fixed on the center of fuselage base plate with the coin bolt by flange.