On-line Robust Approach and Landing Trajectory Generation for Reusable Launch Vehicles - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook On-line Robust Approach and Landing Trajectory Generation for Reusable Launch Vehicles write by Zhesheng Jiang. This book was released on 2009. On-line Robust Approach and Landing Trajectory Generation for Reusable Launch Vehicles available in PDF, EPUB and Kindle.
Onboard Trajectory Generation for the Unpowered Landing of Autonomous Reusable Launch Vehicles
Onboard Trajectory Generation for the Unpowered Landing of Autonomous Reusable Launch Vehicles - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Onboard Trajectory Generation for the Unpowered Landing of Autonomous Reusable Launch Vehicles write by André René Girerd. This book was released on 2001. Onboard Trajectory Generation for the Unpowered Landing of Autonomous Reusable Launch Vehicles available in PDF, EPUB and Kindle.
Automated Trajectory Generation and Guidance for a New Launch Vehicle Flight Phases
Automated Trajectory Generation and Guidance for a New Launch Vehicle Flight Phases - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Automated Trajectory Generation and Guidance for a New Launch Vehicle Flight Phases write by Kenneth R. Horneman. This book was released on 2010. Automated Trajectory Generation and Guidance for a New Launch Vehicle Flight Phases available in PDF, EPUB and Kindle. Much effort has been put into developing technologies for next generation re-usable launch vehicles. Fully re-usable launch vehicles include a booster stage that is designed to land, usually near the launch site, after it has released the upper-stage, which continues to orbit. The fuel reserve needed to turn the booster stage around will usually be minimal For this reason, once the booster stage has completed a rocket-back maneuver, it will typically be at a high altitude (exo-atmospheric) but with low kinetic energy and a steep flight path angle on re-entry. Traditional re-entry guidance is designed for vehicles with a high velocity, and shallow flight path angle, and thus these traditional approaches are not appropriate for a low energy re-entry (LOER). The current research presents a set of guidance algorithms that will successfully guide a vehicle to landing starting from LOER condition. The guidance algorithms are designed to ensure the vehicle can achieve near optimal range performance when required and also to execute a sharp pull-up maneuver that balances the load factor constraint against the need to pull-up quickly before the dynamic pressure constraint is exceeded. The guidance approach has been tested for a wide variety of vehicles and mission scenarios, including more traditional initial conditions that would occur at the end of a High Energy Re-entry (HIER) from orbit. Thus, the guidance approach we have developed can be used as a more robust version of Terminal Area Energy Management (TAEM) guidance, as well as for LOER and has been tested for a wide range of vehicles, including the Space Shuttle and vehicles with a wide variety of L/D capability. Significant development has also gone into the engineering considerations needed to implement the guidance algorithms on a real vehicle. Program execution time, application of vehicle constraints, trajectory repeatability and other factors are all addressed in order to meet this need.
Autonomous Trajectory Planning and Guidance Control for Launch Vehicles
Autonomous Trajectory Planning and Guidance Control for Launch Vehicles - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Autonomous Trajectory Planning and Guidance Control for Launch Vehicles write by Zhengyu Song. This book was released on 2023-04-15. Autonomous Trajectory Planning and Guidance Control for Launch Vehicles available in PDF, EPUB and Kindle. This open access book highlights the autonomous and intelligent flight control of future launch vehicles for improving flight autonomy to plan ascent and descent trajectories onboard, and autonomously handle unexpected events or failures during the flight. Since the beginning of the twenty-first century, space launch activities worldwide have grown vigorously. Meanwhile, commercial launches also account for the booming trend. Unfortunately, the risk of space launches still exists and is gradually increasing in line with the rapidly rising launch activities and commercial rockets. In the history of space launches, propulsion and control systems are the two main contributors to launch failures. With the development of information technologies, the increase of the functional density of hardware products, the application of redundant or fault-tolerant solutions, and the improvement of the testability of avionics, the launch losses caused by control systems exhibit a downward trend, and the failures induced by propulsion systems become the focus of attention. Under these failures, the autonomous planning and guidance control may save the missions. This book focuses on the latest progress of relevant projects and academic studies of autonomous guidance, especially on some advanced methods which can be potentially real-time implemented in the future control system of launch vehicles. In Chapter 1, the prospect and technical challenges are summarized by reviewing the development of launch vehicles. Chapters 2 to 4 mainly focus on the flight in the ascent phase, in which the autonomous guidance is mainly reflected in the online planning. Chapters 5 and 6 mainly discuss the powered descent guidance technologies. Finally, since aerodynamic uncertainties exert a significant impact on the performance of the ascent / landing guidance control systems, the estimation of aerodynamic parameters, which are helpful to improve flight autonomy, is discussed in Chapter 7. The book serves as a valuable reference for researchers and engineers working on launch vehicles. It is also a timely source of information for graduate students interested in the subject.
Model Predictive Control for Terminal Area Energy Management and Approach and Landing for a Reusable Launch Vehicle
Model Predictive Control for Terminal Area Energy Management and Approach and Landing for a Reusable Launch Vehicle - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Model Predictive Control for Terminal Area Energy Management and Approach and Landing for a Reusable Launch Vehicle write by . This book was released on 2002. Model Predictive Control for Terminal Area Energy Management and Approach and Landing for a Reusable Launch Vehicle available in PDF, EPUB and Kindle. The space industry plans to develop new reusable launch vehicles. The new vehicles will need advanced, new guidance and control systems. Since 1996 Draper Laboratory has been developing the next generation guidance and control for reusable launch vehicles in which guidance and control is integrated into one correlated system. Draper's research of integrated guidance and control originated with a single loop multivariable control scheme using time-invariant linear quadratic regulator theory. The research has since evolved into the use of model predictive control theory. The main focus of this thesis is the theory and design of model predictive control for entry of aerospace vehicles. The goal is to develop design criteria and guidelines explaining how to select the model predictive control parameters: prediction horizon, simulation rates, and weighting matrices. A secondary goal is to tightly couple an onboard trajectory generation algorithm with the model predictive controller to improve tracking performance and robustness. Favorable tracking is achieved through two model predictive control architectures, which are discussed. The first architecture has an inner loop stability augmentation system with model predictive control used as an outer loop. The second architecture replaces the inner and outer loops with a single model predictive controller. The two architectures demonstrate the flexibility of model predictive control to adapt to new vehicles; the model predictive control may be used to augment an existing inner loop or may be used as a stand-alone controller. The design focuses primarily on the architecture without a stability augmentation system.
