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Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 52 pages
File Size : 51,8 Mb
Release : 1969
Category : Space vehicles
ISBN : NASA:31769000660871
Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 60 pages
File Size : 46,9 Mb
Release : 1970
Category : Space vehicles
ISBN : NASA:31769000661051
Author : National Aeronautics and Space Administration,European Space Research Organisation
Publisher : Unknown
Page : 128 pages
File Size : 50,5 Mb
Release : 1969
Category : Electronic
ISBN : OCLC:841731459
Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 80 pages
File Size : 46,6 Mb
Release : 1972
Category : Space vehicles
ISBN : CORNELL:31924004012187
Author : Anonim
Publisher : Unknown
Page : 1460 pages
File Size : 51,9 Mb
Release : 1991
Category : Aeronautics
ISBN : UIUC:30112001077426
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : James G. Absalom
Publisher : Unknown
Page : 170 pages
File Size : 51,7 Mb
Release : 1973
Category : Liquid propellant rockets
ISBN : CORNELL:31924004259838
Author : H. J. Ellis
Publisher : Unknown
Page : 156 pages
File Size : 43,8 Mb
Release : 1973
Category : Liquid propellant rockets
ISBN : NASA:31769000661606
Author : Anonim
Publisher : Unknown
Page : 152 pages
File Size : 48,6 Mb
Release : 1985
Category : Large space structures (Astronautics)
ISBN : MINN:30000011047440
Author : Goddard Space Flight Center,Glenn E. Daniels
Publisher : Unknown
Page : 84 pages
File Size : 50,7 Mb
Release : 1974
Category : Atmosphere
ISBN : STANFORD:36105024717816
Author : Anonim
Publisher : Unknown
Page : 688 pages
File Size : 49,9 Mb
Release : 1983
Category : Large space structures (Astronautics)
ISBN : STANFORD:36105021764845
Author : Timothy M. Barrows,Jeb S. Orr
Publisher : Academic Press
Page : 340 pages
File Size : 43,9 Mb
Release : 2020-12-10
Category : Technology & Engineering
ISBN : 9780128199954
Dynamics and Simulation of Flexible Rockets provides a full state, multiaxis treatment of launch vehicle flight mechanics and provides the state equations in a format that can be readily coded into a simulation environment. Various forms of the mass matrix for the vehicle dynamics are presented. The book also discusses important forms of coupling, such as between the nozzle motions and the flexible body. This book is designed to help practicing aerospace engineers create simulations that can accurately verify that a space launch vehicle will successfully perform its mission. Much of the open literature on rocket dynamics is based on analysis techniques developed during the Apollo program of the 1960s. Since that time, large-scale computational analysis techniques and improved methods for generating Finite Element Models (FEMs) have been developed. The art of the problem is to combine the FEM with dynamic models of separate elements such as sloshing fuel and moveable engine nozzles. The pitfalls that may occur when making this marriage are examined in detail. Covers everything the dynamics and control engineer needs to analyze or improve the design of flexible launch vehicles Provides derivations using Lagrange’s equation and Newton/Euler approaches, allowing the reader to assess the importance of nonlinear terms Details the development of linear models and introduces frequency-domain stability analysis techniques Presents practical methods for transitioning between finite element models, incorporating actuator dynamics, and developing a preliminary flight control design
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 28 pages
File Size : 55,5 Mb
Release : 2018-08-06
Category : Electronic
ISBN : 1724739352
The dynamics and attitude and shape control of very large, inherently flexible spacecraft systems were investigated. Increasingly more complex examples were examined, beginning with a uniform free-free beam, next a free-free uniform plate/platform and finally by considering a thin shallow spherical shell structure in orbit. The effects devices were modeled. For given sets of assumed actuator locations, the controllability of these systems was first established. Control laws for each of the actuators were developed based on decoupling techniques (including distributed modal control) pole placement algorithms and a application of the linear regulator problem for optical control theory. Bainum, P. M. and Krishna, R. and Kumar, V. K. and Reddy, A. S. S. R. Unspecified Center NASA-CR-164982 NSG-1414
Author : Anonim
Publisher : Unknown
Page : 252 pages
File Size : 55,6 Mb
Release : 1987
Category : Space stations
ISBN : MINN:31951D00125166D
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 28 pages
File Size : 45,9 Mb
Release : 2018-07-26
Category : Electronic
ISBN : 1724300148
Previous analyses of the design of vibration-isolating mounts for a rear-mounted engine to decouple linear and rotational oscillations are extended to take into account flexibility of the engine-mount structure. Equations and curves are presented to allow the design of mount systems and to illustrate the results for a range of design conditions. Phillips, W. H. Langley Research Center NASA-TM-85725, L-15704, NAS 1.15:85725 RTOP 505-34-03-02
Author : Jie Wang,Dong-Xu Li
Publisher : Springer Nature
Page : 190 pages
File Size : 40,5 Mb
Release : 2021-09-15
Category : Technology & Engineering
ISBN : 9789811650970
This book presents the dynamic modeling and attitude control of flexible spacecraft with time-varying parameters. The dynamic characteristics, vibration control methods and attitude stabilization methods for spacecraft are systematically studied in respects of the theoretical modeling, numerical simulation and the ground experiment. Three active control theories in complex mode space are presented for flexible space structures. Optimal slew strategies based on variable amplitudes input shaping methods and coupling control methods are proposed for stabilization of flexible spacecraft. The research provides an important way to solve the problem of high-precision attitude control of flexible spacecraft with time-varying parameters. This book is appropriate for the researchers who focus on the multi-body dynamics, attitude and vibration control of flexible spacecraft.