November 27, 2020

Download Ebook Free Dynamics And Simulation Of Flexible Rockets

Dynamics and Simulation of Flexible Rockets

Dynamics and Simulation of Flexible Rockets
Author : Timothy Barrows,Jeb Orr
Publisher : Academic Press
Release Date : 2020-09-15
Category : Science
Total pages :230
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Flexible dynamics in launch vehicles have long been considered a disturbance for simulation purposes. Future launch vehicles may include real time estimation and possible real time control or attenuation of flexible dynamics. This is currently handled partially as part of gain-scheduled controllers, but future (slender) launch vehicles will require more detailed models and possibly actuation to control vibrational behavior. The engineer needs to know which parameters are critical and have confidence that all relevant features of the dynamics have been included so that the rocket will not encounter an unfavorable dynamic interaction. Dynamics and Simulation of Flexible Rockets provides a full state, multi-axis treatment of large flexible rockets with propellant slosh and provides the state equations in a format that can be readily coded into a simulation environment. Presenting a vector formulation of rocket dynamics that is suitable for modern computer analysis, equations of motion are derived for a flexible rocket with sloshing fuel and moving nozzles. Various forms of the mass matrix for this system are also presented. This book also discusses the nature of various forms of coupling, such as between the nozzle motions and the flexible dynamics. Covers everything the structural and control engineer needs to analyze or improve launch vehicle stability when facing flexible dynamics Provides the derivation of the linear dynamics using Lagrange's equation plus a separate nonlinear Newton/Euler derivation, allowing the reader to assess the importance of nonlinear terms Presents a method for making a smooth transition from one finite element model to the next

Atmospheric and Space Flight Dynamics

Atmospheric and Space Flight Dynamics
Author : Ashish Tewari
Publisher : Springer Science & Business Media
Release Date : 2007-11-15
Category : Technology & Engineering
Total pages :556
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This book offers a unified presentation that does not discriminate between atmospheric and space flight. It demonstrates that the two disciplines have evolved from the same set of physical principles and introduces a broad range of critical concepts in an accessible, yet mathematically rigorous presentation. The book presents many MATLAB and Simulink-based numerical examples and real-world simulations. Replete with illustrations, end-of-chapter exercises, and selected solutions, the work is primarily useful as a textbook for advanced undergraduate and beginning graduate-level students.

Research on Mechanics, Dynamic Systems and Material Engineering

Research on Mechanics, Dynamic Systems and Material Engineering
Author : B. Xu,H.Y. Li
Publisher : Trans Tech Publications Ltd
Release Date : 2012-12-27
Category : Technology & Engineering
Total pages :366
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Volume is indexed by Thomson Reuters CPCI-S (WoS). The collection includes selected peer-reviewed papers from the 2012 International conference on Mechanics , Dynamic Systems and Material Engineering (MDSME2012) held November 24-25, 2012 in Guangzhou, China. The 70 papers are grouped into the following chapters: Chapter 1: Research on Mechanics and Dynamics of Systems in Mechanical Engineering, Chapter 2: Research on Material Engineering and Material Applications.

Flexible Multibody Dynamics

Flexible Multibody Dynamics
Author : Arun K. Banerjee
Publisher : John Wiley & Sons
Release Date : 2016-05-23
Category : Technology & Engineering
Total pages :312
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"This book describes how to build mathematical models of multibody systems with elastic components. Examples of such systems are the human body itself, construction cranes, cars with trailers, helicopters, spacecraft deploying antennas, tethered satellites, and underwater maneuvering vehicles looking for mines while being connected by a cable to a ship"--

Vibration Control of a Flexible Rocket Using Fiber Bragg Grating Sensor Arrays

Vibration Control of a Flexible Rocket Using Fiber Bragg Grating Sensor Arrays
Author : Bartel J. Van der Veek
Publisher : Unknown
Release Date : 2013
Category :
Total pages :454
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As launch vehicle designs become more slender, the effects of bending vibration on control system stability could be dominant in control systems designed using rigid-body dynamics. Vibrational loads can also cause major damage to the launch vehicle, either in the form of vibrational fatigue or excitation of the structures resonant frequencies. This work investigates a novel method to control vibrations in real time using a real time control target with distributed strain measurements from FBG sensor arrays. Active control of the flexible structure will reduce vibration, which will decrease the chance of damaging the structure. A scaled test article representative of the structural dynamics associated with a slender launch vehicle is designed and built. Finite element analysis modeling methodology is developed to capture the most significant features of test specimen. A model for the entire test article is developed, including frequency response of the cantilever beam, thruster dynamics, and sensor conversion matrices. This research develops, models and provides experimental validation of the use of an array of cold gas thrusters for the real time control of the bending dynamics of a test article. Three separate control algorithms are developed to minimize vibration in the test article, using the FBG strain measurements to calculate required thrust. A classical control algorithm for benchmark purposes, a robust control algorithm and an adaptive control algorithm are implemented. The controller performance is investigated by simulation using the developed model, and these results are experimentally verified using the experimental setup. The performance comparison shows that classic controller is hard to implement experimentally due to decoupling issues, the robust controller achieves good vibration suppression in both simulations and experimental results, and the adaptive controller shows good results, with a potential to surpass the robust controller results in future research. Using the robust controller to control the continuous excited first and second resonant mode of the test setup, shows 94% and 80% reduction of peak-peak vibration respectively, when compared to the open loop response. This research also investigates using the same FBG sensor arrays to reduce the number of IMU sensing units in the launch vehicle.

Applied Mechanics Reviews

Applied Mechanics Reviews
Author : Anonim
Publisher : Unknown
Release Date : 2000
Category : Mechanics, Applied
Total pages :129
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A Study of Flexible Multibody System with Finite Shell Elements

A Study of Flexible Multibody System with Finite Shell Elements
Author : Jangho Shin
Publisher : Unknown
Release Date : 2006
Category :
Total pages :129
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Introduction to Dynamics and Control of Flexible Structures

Introduction to Dynamics and Control of Flexible Structures
Author : John L. Junkins
Publisher : AIAA
Release Date : 1993
Category : Electronic books
Total pages :467
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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author : Anonim
Publisher : Unknown
Release Date : 1990
Category : Aeronautics
Total pages :129
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International Aerospace Abstracts

International Aerospace Abstracts
Author : Anonim
Publisher : Unknown
Release Date : 1999
Category : Aeronautics
Total pages :129
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Government Reports Announcements

Government Reports Announcements
Author : Anonim
Publisher : Unknown
Release Date : 1973
Category : Technology
Total pages :129
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U.S. Government Research & Development Reports

U.S. Government Research & Development Reports
Author : Anonim
Publisher : Unknown
Release Date : 1970
Category : Technology
Total pages :129
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Publications of the Faculty and Staff ...

Publications of the Faculty and Staff ...
Author : University of Alabama
Publisher : Unknown
Release Date : 1977
Category :
Total pages :129
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Government Reports Annual Index

Government Reports Annual Index
Author : Anonim
Publisher : Unknown
Release Date : 1992
Category : Government reports announcements & index
Total pages :129
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Space Vehicle Dynamics and Control

Space Vehicle Dynamics and Control
Author : Bong Wie
Publisher : AIAA
Release Date : 1998
Category : Science
Total pages :661
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"Space Vehicle Dynamics and Control provides a solid foundation in dynamic modeling, analysis, and control of space vehicles. More than 200 figures, photographs, and tables are featured in detailed sections covering the fundamentals of controlling orbital, attitude, and structural motions of space vehicles. The textbook highlights a range of orbital maneuvering and control problems: orbital transfer, rendezvous, and halo orbit determination and control. Rotational maneuvering and attitude control problems of space vehicles under the influence of reaction jet firings, internal energy dissipation, or momentum transfer via reaction wheels and control moment gyros are treated in detail. The textbook also highlights the analysis and design of attitude control systems in the presence of structural flexibility and/or propellant sloshing. At the end of each chapter, Dr. Wie includes a helpful list of references for graduate students and working professionals studying spacecraft dynamics and control. A bibliography of more than 350 additional references in the field of spacecraft guidance, control, and dynamics is also provided at the end of the book. This text requires a thorough knowledge of vector and matrix algebra, calculus, ordinary differential equations, engineering mechanics, and linear system dynamics and control. The first two chapters provide a summary of such necessary background material. Since some problems may require the use of software for the analysis, control design, and numerical simulation, readers should have access to computational software (i.e., MATLAB) on a personal computer.