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Method for calculating dynamic response characteristics of captive balloon

A tethered balloon and dynamic response technology, applied in calculation, computer-aided design, complex mathematical operations, etc., can solve problems such as the decrease of calculation accuracy

Active Publication Date: 2021-04-16
CHINA SPECIAL TYPE FLIER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for calculating the dynamic response characteristics of a tethered balloon, which is used to overcome the problem of decreased calculation accuracy caused by inaccurate models in existing algorithms, thereby providing effective reference for engineering design and optimization

Method used

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  • Method for calculating dynamic response characteristics of captive balloon
  • Method for calculating dynamic response characteristics of captive balloon
  • Method for calculating dynamic response characteristics of captive balloon

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Embodiment Construction

[0072] Referring to the accompanying drawings, the present invention provides a method for calculating the dynamic response characteristics of a tethered balloon, which includes the following steps.

[0073] In this scenario, the parameters involved in the formulas are explained as follows:

[0074]

[0075]

[0076]

[0077]

[0078] The meaning of different variable subscripts:

[0079] A Aerodynamic item

[0080] B buoyancy term

[0081] C Mooring cable force term

[0082] G gravity term

[0083] R reference point (see Figure 5 )

[0084] t trim state

[0085] 0 Lower end of mooring line (see Image 6 )

[0086] 1 Upper end of the mooring line (see Image 6 )

[0087] The meaning of the subscripts used for aerodynamic derivatives:

[0088] The derivative of α with respect to the angle of attack α

[0089] compared to derivative of

[0090] Derivative of β with respect to β

[0091] compared to derivative of

[0092] p relative to deri...

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Abstract

The invention discloses a method for calculating dynamic response characteristics of a captive balloon, which comprises the following steps of: establishing a rigid body motion equation of the tethered balloon, namely determining kinematics and dynamics equations of the captive balloon relative to a centroid in a stable coordinate system by taking a captive balloon system as a mass point and taking the motion of the captive balloon system as rigid body motion; carrying out stress analysis on the captive balloon, and establishing a kinetic model of the captive balloon; determining expressions of the external force and the moment, performing summing and arranging to obtain a six-degree-of-freedom motion equation around the center of mass of the balloon; modeling two external wind fields of discrete gust and atmospheric turbulence, and providing wind field environment input for six-degree-of-freedom simulation of the captive balloon; loading the established atmospheric wind field model into a motion equation of the captive balloon in a function form to obtain a state space function, so that the state space function becomes a known control parameter which influences the motion state of the captive balloon; and solving the state space function to obtain a dynamic response process of the captive balloon under the condition of atmospheric wind field disturbance.

Description

technical field [0001] The invention relates to a calculation method for the stability of a moored balloon, which is applicable to the calculation and analysis of the dynamic response characteristics of all moored balloons. Background technique [0002] The tethered balloon system provides a new technical means for battlefield reconnaissance and surveillance, real-time surveillance, anti-terrorism and stability maintenance, disaster prevention and mitigation, environmental monitoring and high-speed communication by carrying optical, microwave and other remote sensing payloads and wireless communication payloads. If the dynamic response characteristics of the tethered balloon cannot be effectively evaluated during the design process, the attitude of the balloon after being disturbed by the wind and the state of the cable are unknown, and the balloon and the mission load will face the risk of damage during the wind resistance process. [0003] At present, domestic research on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/20G06F17/10G06F113/08G06F119/14
Inventor 王斌斌吴孟君李庄田瑞孙娜席懿
Owner CHINA SPECIAL TYPE FLIER RES INST
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