使用纵向稳定性导数对单个挂式气机进行数学建模
Anoop Sasidharan1, Ratna Kishore Velamati2, Akram Mohammad3
1Department of Electrical and Electronics Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, India.
Scientific reports
|February 15, 2024
概括
这项研究使用稳定性衍生来改进稳定性,模拟比空气轻的空气静止器. 该研究估计了增加的质量值,并模拟了绑定的气机,实现了稳定的飞行动力学.
科学领域:
- 航空航天工程 航空航天工程
- 流体动力学 流体动力学
- 控制系统 控制系统
背景情况:
- 比空气轻的 (LTA) 车辆,如空气定位器,为战略和商业用途提供独特的悬浮和隐形能力.
- 准确的数学模型对于理解LTA车辆动态和开发有效的稳定系统至关重要.
- 传统上用于比空气重的车辆的稳定性导数,为LTA车辆建模提供了一个潜在的方法.
研究的目的:
- 开发一种方法来使用稳定性衍生品创建一个单绳气机的数学模型.
- 为了估计气压机的增加质量作为纵向稳定性导数.
- 为了研究一个合的气ostat-tether系统的动态.
主要方法:
- 通过使用ANSYS Fluent进行了对气3D模型的计算流体动力学 (CFD) 分析,以获得稳定性导数.
- 气ostat和tether模型是分开开发的,然后合在一起.
- 使用MATLAB 2020研究了一种纵向脱的线性数学模型.
主要成果:
- 该研究成功估计了作为纵向稳定性导数的增加质量项.
- 当投球中心被设置到气ostat的体积中心时,观察到负投球角度.
- 合的挂式气ostat模型在200-400秒内证明了稳定的张力和速度组件.
结论:
- 提出的方法提供了一种可行的方法,用于使用稳定性导数来建模挂式气静止器.
- 准确选择投球中心对于预测气ostat态度至关重要.
- 开发的模型显示了有希望的结果,用于理解和控制气机动力学.
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