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Pulley buncher

A technology of clusters and pulleys, which is applied in the direction of aircraft, balloon aircraft, and lighter-than-air aircraft, etc., can solve the problems of damage to the structure of the hull itself, affecting the stability of the airship, and large changes in wind speed, so as to improve wind resistance and shorten the Debug time, improve payload performance

Pending Publication Date: 2018-08-24
丹阳昊天飞行器技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual mooring process, due to the complex air environment and large changes in wind speed, the airship will drift as a whole under the effect of wind resistance, resulting in the destruction of the static balance established by the tension, buoyancy and gravity acting on the airship. Restorative forces are created on the tail to re-establish balance
In order to ensure the force balance in the pitching direction of the airship, as the wind resistance increases, the angle of attack of the airship also increases, thereby generating a greater restoring force on the empennage. When the angle of attack increases to a certain extent, it will seriously affect The stability of the airship will cause unpredictable damage to the structure of the hull itself

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a pulley bundler, including a bundler disc 1 , a fixed pulley 2 , a rotating shaft 3 and a rope clamp 4 .

[0047] like figure 1 As shown, four mounting seats 10 are distributed on the upper surface of the clustering disc 1, they are parallel to each other, and are connected with the fixed pulley 2 through the rotating shaft 3 to form a rotating pair. The lower end of the clustering disc 1 is connected with the main cables to collect the pulling force of the stay cables 5 . In this embodiment, there are four drag cables 5 and four mounting seats 10, which are arranged perpendicular to the direction of the airship. like figure 1 and 2 As shown, there are 4 mounting seats 10 on the left and right sides of the airship, respectively. Correspondingly, there are 2 fixed pulleys 2 and 2 cables 5 on the left and right sides of the airship.

[0048] The installation seat 10 has a certain installation angle, that is, the angle between the installation...

Embodiment 2

[0053] Figure 5 Indicates the force state of the tethered airship during the release process under no wind conditions, and the tensile force F 2 , Buoyancy F 1 The three directions are parallel to the gravity G and are all vertical directions, the distance between the pulling force and the buoyancy force is L1, and the distance between the buoyancy force and the gravity force is L2. When the tethered airship satisfies the following relationship, the system is balanced:

[0054]

[0055] During the debugging process, the positions of the center of gravity and the center of buoyancy of the airship are obtained through actual measurement, and the position of the pull point A of the main cable is calculated. The rope clamping device 4 fits with the F face retaining groove of the fixed pulley 2.

Embodiment 3

[0057] Image 6 Indicates the force state of the moored airship in the windward state, and it is subjected to the pulling force F 21 (in the case of using a conventional cluster), pulling force F 22 (in the case of using a pulley bundle), buoyancy F 1 , gravity G and restoring force F 3 , the three directions are parallel and vertical, and the pitch balance relationship of the tethered airship satisfies the following relationship:

[0058] F3*L4+F*L=G*L2

[0059] When F*L=F 21 *For L11, the relationship is the force state of the airship using a conventional cluster;

[0060] When F*L=F 22 *For L12, the relational expression is the force state of the airship using the pulley cluster;

[0061] due to F 22 *L12>F 21 *L11, when the tethered airship has the same amount of drift, the tail of the tethered airship using the pulley cluster will generate less restoring force and the change of the airship’s angle of attack will be small, thus improving the airship’s wind resista...

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Abstract

The invention belongs to the field of tethered aerostats, and provides a pulley buncher. The pulley buncher comprises a bunching disk (1), fixed pulleys (2), rotating shafts (3) and rope clamping devices (4). The fixed pulleys (2) are fixed on the bunching disk (1) through the rotating shafts (3) and can rotate around the rotary shafts (3), and the relative angles of the fixed pulleys (2) and thebunching disk (1) are changed. Inhaul cables (5) bypass the fixed pulleys (2) and both ends of the inhaul cables are fixed on an airship, and the rope clamping devices (4) are close to the fixed pulleys (2) and fixed to the inhaul cables (5). According to the pulley buncher, the positions of the rope clamping devices (4) on the rear side can be adjusted according to the static balance of the tethered airship, and the positions of the front rope clamping devices (4) are adjusted through the wind resistance grade and wind resistance of the airship; and the effective load of the tethered airshipcan be effectively increased, and the anti-wind capability is improved.

Description

technical field [0001] The invention belongs to the field of tethered aerostats, and relates to a tethered auxiliary device of the tethered aerostat, in particular to a pulley bundler. Background technique [0002] Tethered airship is a class of lighter-than-air aircraft, mainly composed of mooring system, mooring system and airship. The tethered airship generates buoyancy through the helium gas filled in the airbag, and the airship is tethered to the ground equipment by the tethering cable, so as to realize the long-term resident airship of the airship. [0003] In order to ensure the static stability of the airship, the installation position of the mooring point will be calculated during the scheme design process, but due to manufacturing errors, there will be errors between the center of gravity and buoyancy center of the actually manufactured airship and the theoretically calculated values. The current conventional solution is to introduce a counterweight module to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64B1/50B64B1/66
CPCB64B1/50B64B1/66
Inventor 郑杨涛施志强
Owner 丹阳昊天飞行器技术有限公司
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