直升机扫雷系统跨介质刚柔耦合建模与配平分析

doi:10.7527/S1000-6893.2025.31900

Abstract

Abstract:

Naval mines present a severe threat to maritime safety. Helicopter-based mine clearing， compared to traditional ship-based methods， offers faster deployment， higher efficiency， and lower risk. However， there is still a lack of publicly available modeling theories and analytical methods applicable to such systems. This paper establishes a cross-medium large-flexible towing cable model based on the absolute node coordinate formulation. Additionally， a rigid-body dynamics model for the helicopter and towing body， which facilitates easy coupling integration， is developed. The cross-medium rigid-flexible coupling model for the helicopter mine-clearing system is constructed and validated. A partitioned trim method for the coupled system is proposed， and the effects of key design and flight parameters on trim characteristics are analyzed.Results show that as flight speed increases， the helicopter nose-down attitude intensifies， while placing the towing point behind and above the center of gravity improves the attitude. During turns， the towing cable tension suppresses helicopter roll motion， requiring additional lateral control to provide centripetal force for turning. Lower flight altitude and longer cables are ineffective at significantly increasing the depth of the towing body， necessitating the installation of sinking components on the towing body.

Key words: flight dynamics, helicopter mine-clearing, helicopter towing, towing cable, towing body, coupled system, trim method

CLC Number:

V212.4

Luofeng WANG, Renliang CHEN, Rui FENG. Cross-medium rigid-flexible coupled modeling and trim analysis of helicopter mine-clearing system[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(22): 231900.

Figures/Tables 15

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Table 1

Basic parameters of helicopter towing system

参数	数值
直升机质量/kg	7 257
主桨片数	4
主轴前倾角/（°）	3
尾桨转速/（rad·s^-1）	124.6
尾桨倾斜角/（°）	20
拖缆长度/m	243
拖缆线密度/（kg·m^-3）	4 857
拖体质量/kg	453.6
拖体直径/m	0.25
迫沉水翼面积/m²	0.08
主桨半径/m	8.18
主桨转速/（rad·s^-1）	27
尾桨半径/m	1.68
尾桨片数	4
拖点位置/m	重心下方1.3
拖缆直径/mm	9.55
弹性模量/（N·m^-2）	$7 × 108$
拖体长度/m	2
尾翼面积/m²	0.02
拖点位置/m	重心上方0.125

Table 1

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Cross-medium rigid-flexible coupled modeling and trim analysis of helicopter mine-clearing system

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