新型自适应起落架的单支腿落震性能研究

孙浩; 尹乔之; 魏小辉; 陈帅; 聂宏

doi:10.13700/j.bh.1001-5965.2021.0354

新型自适应起落架的单支腿落震性能研究

doi: 10.13700/j.bh.1001-5965.2021.0354

孙浩^{1, 2, 3},
尹乔之^{1, 2, 3},
魏小辉^{1, 2, 3, ,},
陈帅^{1, 2, 3},
聂宏^{1, 2, 3}

1.
南京航空航天大学航空学院，南京 210016
2.
南京航空航天大学航空航天结构力学及控制全国重点实验室，南京 210016
3.
南京航空航天大学飞行器先进设计技术国防重点学科实验室，南京 210016

基金项目: 国家自然科学基金(51905264,52275114)；中国博士后科学基金(2021M691565)；南京航空航天大学前瞻布局科研专项资金；中央高校基本科研业务费专项资金(NT2021004)；航空科学基金(202000410520002)；江苏高校优势学科建设工程资助项目

详细信息

通讯作者:
E-mail：wei_xiaohui@nuaa.edu.cn

中图分类号: V226
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- 被引次数: 0
出版历程
- 收稿日期: 2021-06-29
- 录用日期: 2021-08-08
- 网络出版日期: 2021-09-09
- 整期出版日期: 2023-04-30

Research of single leg drop performance of new adaptive landing gear

SUN Hao^{1, 2, 3},
YIN Qiaozhi^{1, 2, 3},
WEI Xiaohui^{1, 2, 3
, ,},
CHEN Shuai^{1, 2, 3},
NIE Hong^{1, 2, 3}

1.
College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
State Key Laboratory of Mechanics and Control for Aerospace Structures，Nanjing University of Aeronautics and Astronautics， Nanjing 210016，China
3.
Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Funds: National Natural Science Foundation of China (51905264,52275114); China Postdoctoral Science Foundation (2021M691565); Nanjing University of Aeronautics and Astronautics Prospective Layout Special Found for Scientific Research; The Fundamental Research Funds for the Central Universities (NT2021004); Aeronautical Science Foundation of China (202000410520002); A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

More Information

Corresponding author: E-mail：wei_xiaohui@nuaa.edu.cn

摘要

摘要:
针对传统直升机起落架结构相对固定导致的地形适应能力不足的问题，设计了一种两级缓冲系统的新型缓冲作动行走一体化自适应起落架，实现了多工况下的着陆缓冲功能，常规着陆时磁流变缓冲器单独工作实现着陆缓冲功能，危险工况下磁流变缓冲器和油气缓冲器共同工作实现抗坠毁功能。在多体动力学软件LMS Virtual.Lab Motion中建立了带两级缓冲器的自适应起落架落震仿真模型。自适应起落架可以通过2个液压作动缸来调节不同姿态，进行了常规工况及耐坠毁工况的落震仿真分析，并根据仿真数据设计了缓冲器参数。在多种工况下进行了自适应起落架多级缓冲系统落震试验，对比分析了试验和仿真结果。结果表明，在2种着陆速度下，系统缓冲效率分别达到85%和75%，自适应起落架可以主动调节至多种姿态，并在各姿态下都具有良好的缓冲性能，还具备一定的抗坠毁能力。试验与仿真结果具有一致性，证明建立的自适应起落架的多体动力学模型能够有效地模拟落震过程。
- 自适应起落架 /
- 多级缓冲系统 /
- 抗坠毁 /
- 多体动力学 /
- 落震试验
Abstract:
For the problem of inadequate terrain adaptability caused by the fixed structure of traditional helicopter landing gears, a new landing gear integrated for buffering actuation and walking with two stage buffering system was designed. The buffering function under multiple conditions was realized, the magnetorheological damper works to realize function in the conventional landing; the magnetorheological buffer and the oil-gas buffer work together to realize crashworthiness under the dangerous condition. A drop simulation model was established in the multibody dynamics software LMS Virtual.Lab Motion. The adaptive landing gear can adjust attitudes by two hydraulic actuating cylinders. The drop simulation analysis of the normal condition and the crash-resistant condition was carried out, and the buffer parameters were designed according to simulation data., the drop test was carried out under various conditions. Compared with the test and simulation results, the results show that the system’s buffering efficiency reached 85% and 75% respectively at two landing speeds. The adaptive landing gear can adjust to different attitudes actively, and it has good buffering performance at each attitude and a crashworthiness ability. The fact that the simulation and test findings were in agreement shows how well the multi-body dynamic model of the landing gear simulates the drop process.
- adaptive landing gear /
- multistage buffering system /
- crashworthiness /
- multibody dynamics /
- drop test

HTML全文

图 1 装有新型自适应起落架的直升机

Figure 1. A helicopter equipped with a new adaptive landing gear

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图 2 自适应起落架的单个支撑腿结构模型

Figure 2. Single leg structure model of adaptive landing gear

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图 3 自适应起落架仿真建模框架

Figure 3. Adaptive landing gear simulation modeling framework

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图 4 自适应起落架落震试验设计图

Figure 4. Design of adaptive landing gear drop test

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图 5 自适应起落架落震试验现场图

Figure 5. Site diagram of adaptive landing gear drop test

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图 6 起落架单个支撑腿姿态示意图

Figure 6. Attitude diagram of landing gear single leg

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图 7 起落架单支腿不同姿态实验图

Figure 7. Test diagram of landing gear single leg in different attitudes

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图 8 2 m/s着陆速度下各姿态的仿真与试验系统功量图

Figure 8. System work in simulation and test with 2m/s landing velocity in different attitudes

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图 9 6 m/s着陆速度下的仿真与试验系统功量

Figure 9. System work in simulation and test with 6 m/s landing velocity

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表 1 落震参数

Table 1. Drop test parameter

着陆速度/（m·s⁻¹）投放高度/mm 投放质量/kg

2 204.08 314.07
6 1 836.73 403.48

下载: 导出CSV

表 2 缓冲器填充参数

Table 2. Buffer filling parameter

缓冲器气腔初始
压强/MPa 气腔初始
体积/mm³ 油孔面积/
mm²

磁流变缓冲器 0.4 214 884.94
油气缓冲器 4 926 421.90 82.19

下载: 导出CSV

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