Dynamics and Control of Future Space Access Vehicles

项目概述本博士工作在轨道接入有限公司目前正在开发的轨道500R小有效载荷发射系统概念的系统定义和初步设计阶段。这是斯特拉斯克莱德大学自2015年以来进行的GB 1M设计可行性研究的后续工作。使用Orbital500R和任何其他相关测试案例，项目目标是：1-开发飞行器的质量分布模型以计算转动惯量矩阵2-开发适用于发射任务所有阶段的6自由度动力学模型3-将系统模型集成到多学科设计优化框架中，开发和调整方法以实现有效的优化4-开发最优控制策略并确定制导轨迹5-开发用于预测性星载控制的控制策略背景全球航天工业的技术和经济发展目前受到过高的发射成本和周转时间的阻碍。增加空间准入的最有希望的概念之一是可重复使用的运载火箭，其形式是中小型有效载荷转移系统。英国目前在这一研究领域非常活跃，越来越多的公司投资于可重复使用的太空访问飞行器的研发。然而，这种类型的车辆还没有完全投入商业运营，这种类型的车辆的开发将是一项重大的技术突破。斯特拉斯克莱德大学在英国和国际上被公认为太空运输设计领域的权威和先驱，提供计算智能、空间任务分析和再入空气热力学方面的长期专业知识。最近的工作涉及系统设计优化方法、制导和控制策略以及多目标轨迹优化的发展。无论是对英国还是对全球来说，太空访问都是一个处于发展关键时刻的研究领域。轨道500R等可重复使用运载火箭的成功开发，将极大地推动英国在新的全球航天市场中占据更大份额。

Project Summary This PhD works within the system definition and preliminary design phases of the Orbital 500R small payload launch system concept currently under development by Orbital Access Ltd. This follows on from the £1M design feasibility studies conducted by Strathclyde University since 2015. Using the Orbital 500R, and any other relevant test cases, the project objectives are: 1- Develop mass distribution models of the vehicles to calculate the moment of inertia matrix 2- Develop 6DOF dynamical models applicable to all phases of a launch mission 3- Integrate system models into a multidisciplinary design optimisation framework, developing and adapting methods to lead to an efficient optimisation 4- Develop optimal control strategies and determine guidance trajectories 5- Develop control strategies for predictive on-board control Background The technological and economic development of global space industry is currently hindered by exceedingly high launch costs and turnover times. One of the most promising concepts for increasing the availability of space access is reusable launch vehicles, in the form of small/medium payload transfer systems. The UK is currently very active in this area of research, with an increasing number of companies investing in the R&D of reusable space access vehicles. However, no vehicle of this type is yet fully commercially operational, and the development of such would represent a significant technological breakthrough. Strathclyde University is recognised in the UK, and internationally, as an authority and pioneer in the field of space transportation design, offering long standing expertise in computational intelligence, space mission analysis and re-entry aerothermodynamics. Recent work has involved the development of system design optimisation methods, guidance and control strategies, and multiobjective trajectory optimisation. Space Access is a field of research at a critical point in it's development, for both the UK and globally. The successful development of a reusable launch vehicle, such as the Orbital 500R, will significantly advance the UK towards increasing its share of the new global space-enabled market.