CN101875397B - Duct structure for airship - Google Patents

Abstract

The invention relates to a duct structure for an airship, the structure comprises a control lever and a plurality of guide vanes which can rotate through the control lever, the control lever and a plurality of the guide vanes are connected in transmission, and a plurality of the guide vanes are arrayed in an inclined way from bottom to top. Compared with the prior art, by adopting the structure, a single motor is only needed, the motor is fixedly arranged in the duct, and a reversing vane in the latter part of the duct is used to change the direction of a propelling force, thus realizing the functions of ultra-short takeoff and landing and hovering in the air; and compared with a bi-motor by-pass rotation technology, the scheme has simple manufacture and low cost, can realize main functions and is suitable for a small-sized unmanned airship.

Description

A kind of duct structure for airship

Technical field

The present invention relates to dirigible, particularly relate to a kind of duct structure for airship.

Background technology

Dirigible (Airship) is a kind of aerocraft by the air lift force air, and its flight lift mainly comes from the air lift force that acts on the fuselage, has and handles and propulsion system.Usually its propulsion system is to be made up of the propeller system that aero-engine drives.Since dirigible was born, dirigible was in war and civilian shooting, and the weather forecast aspect is widely used.

The flight theory of dirigible is to make the deadweight G of dirigible be slightly larger than the buoyancy V1 that the hull air bag is produced; When beginning to rotate, screw propeller make dirigible produce speed forward; And make the hull air bag certain elevation angle arranged producing part lift V2, the buoyancy V that dirigible is able to go up to the air is from two parts:

V＝V ₁+V ₂＞G

So dirigible must keep speed forward could produce the buoyancy V2 that has owing to the elevation angle, in case dirigible halts, V2 is zero, and this time, air lift force just began to descend less than dirigible deadweight dirigible.

Can realize at present that the dirigible that hovers has two sending out to change the letter technology, this technological implementation is that two letter road driving engines that can vert are installed on the both sides, cabin, relies on the rotation of driving engine to control attitudes such as hovering of dirigible.In order to realize verting of driving engine, the complicated steering wheel gear train of a cover is arranged in its cabin.Though function is pretty good, be confined to twin-enginedly, be suitable for the unmanned airship of type bigger than normal, cost of manufacture is higher relatively, and higher being difficult to of technical risk popularized on commercial dirigible.

Summary of the invention

Technical matters to be solved by this invention is exactly for the defective that overcomes above-mentioned prior art existence a kind of duct structure for airship to be provided.

The object of the invention can be realized through following technical scheme: a kind of duct structure for airship; It is characterized in that; Comprise control stalk and can pass through several pieces flow deflectors that control stalk rotates; Described control stalk and several pieces flow deflectors are in transmission connection, the oblique from the bottom to top array of described several pieces flow deflectors.

The cross section of described flow deflector is curved.

The radian of described flow deflector is 30～90 °.

The direction and the angle theta between the horizontal surface of the oblique array of described several pieces flow deflectors are 20～90 °.

Relation between the number n of the arc radius r of described flow deflector, letter road height h and flow deflector is:

$2\×r\×\sin \left(\frac{\mathrm{\α}}{2}\right)\×n=h.$

Described several pieces flow deflectors are the level of state when dirigible cruising flight, constitute the air-flow letter road of level, do not change the direction after air communication is crossed flow deflector this moment, and air-flow produces the propulsive force of horizontal direction, and dirigible obtains speed forward.

Described several pieces flow deflectors need be moved it to vertical state by control stalk at dirigible when control is hovered, turned to after this moment, air communication was crossed flow deflector; Constitute the air-flow letter road of " L " type; Produce thrust upwards, dirigible obtains extra lift, and dirigible is in suspended state.

Compared with prior art, the present invention has the following advantages:

1, adopts change letter road technology, realize short takeoff and hover function through the thrust direction that changes driving engine;

2, make simply, cost-cutting is specially adapted to small-sized dirigible effectively, and its finished product is applicable to the commercial flight in little space, incity, city more, has bigger commercial value of service;

3, the present invention proposes optimum flow deflector cross sectional shape, the flow deflector cross sectional shape should be circular arc, and the radian of circular arc is between 30 degree and 90 degree;

4, the scope that the present invention proposes the optimum oblique array angle of flow deflector θ is 20 to spend between 90 degree;

Description of drawings

Fig. 1 is a scheme drawing of the present invention;

Fig. 2 is the scheme drawing of flow deflector of the present invention;

Fig. 3 is the scheme drawing of the present invention in cruising condition;

The scheme drawing that Fig. 4 hovers aloft for the present invention.

Wherein: 1-control stalk, 2-flow deflector, 3-screw propeller, 4-steering wheel.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is described further.

Like Fig. 1, shown in 2; The present invention provides a kind of duct structure for airship; Comprise control stalk 1 and can pass through several pieces flow deflectors 2 that control stalk 1 rotates, described control stalk 1 is in transmission connection the oblique from the bottom to top array of described several pieces flow deflectors 2 with several pieces flow deflectors 2.The present invention can hang over the below of dirigible down, and flow deflector is linked to each other by control stalk, can spend variable inclinations in the 90 degree scopes 0, and control stalk is by steering wheel 4 controls.

The cross section of described flow deflector 2 is curved; The radian of described flow deflector 2 is 30～90 °; The direction of described several pieces flow deflector 2 oblique arrays and the angle theta between the horizontal surface are 20～90 °; Relation between the number n of the arc radius r of described flow deflector 2, letter road height h and flow deflector 2 is:

$2\×r\×\sin \left(\frac{\mathrm{\α}}{2}\right)\×n=h;$

As shown in Figure 3, flow deflector 2 oblique arrays are afterbody in the letter road, when dirigible cruising flight; Flow deflector is the level of state, and constitutes the air-flow letter road of level, does not change the direction after air communication is crossed flow deflector this moment; Air-flow produces the propulsive force of horizontal direction, and dirigible obtains speed forward, at this moment the lift that produced from the buoyancy and the cruising flight ship capsule elevation angle of dirigible ship capsule of the buoyancy of dirigible; Dirigible advances, and can keep flying height;

As shown in Figure 4, when dirigible need hover, move it to vertical state aloft by control stalk 1, turned to after this moment, air communication was crossed flow deflector 2, constitute the air-flow letter road of " L " type, produce thrust upwards, dirigible obtains extra lift, and dirigible is in suspended state.

Claims (1)

1. an airship duct device is characterized in that, this letter duct device can be hung over the below of dirigible down, and it comprises steering wheel, control stalk, a plurality of flow deflector; Wherein,

Steering wheel and control stalk are controlled annexation, and a plurality of flow deflectors and control stalk are controlled annexation;

Said a plurality of flow deflector shape is identical; Linearly strip and cross section are arc separately; The arc angle of flow deflector is designed to 30 degree, and said a plurality of flow deflectors are provided with side by side in the same way, and the flow deflector transverse ends connects into an integral body in the transverse edge center through attaching parts; Distance between the transverse edge center of each flow deflector is arranged as, and when flow deflector was in vertical state, all air communication turned to after crossing flow deflector, constitutes the air-flow letter road of " L " type;

Said a plurality of flow deflector in the letter road afterbody with the form setting of oblique array from the bottom to top; The direction of this oblique array is the in-plane that a plurality of flow deflector central transverse axis constitute; Airintake direction is the horizontal surface direction, and the direction of this oblique array and the angle theta between the horizontal surface are 20 °;

Relation between the number n of the arc radius r of said flow deflector, flow deflector arc angle [alpha], letter road height h and flow deflector is: $2\×r\×\mathrm{Sin}\left(\frac{a}{2}\right)\×n=h;$

Control stalk is connected with flow deflector is controlled in said flow deflector transverse sides, and itself and flow deflector coordinated manipulation make flow deflector rotate around the flow deflector central axis that is formed centrally in the flow deflector transverse edge, and its slewing area is 0 to spend to 90 degree;

Flow deflector comprises following two states at least thus: first kind of state is horizontality; Air-flow letter road is a level during this state; Flow deflector does not change the direction after air communication is crossed flow deflector during on even keel, and air-flow produces the propulsive force of horizontal direction, and dirigible obtains speed forward; Second kind of state is vertical state, turns to after air communication is crossed flow deflector when this state, constitutes the air-flow letter road of " L " type, produces thrust upwards, and dirigible obtains extra lift, and dirigible is in suspended state.

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