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Author : Dana Meachen Rau
Publisher : Capstone
Page : 28 pages
File Size : 45,5 Mb
Release : 2006
Category : Juvenile Nonfiction
ISBN : 1404811389
A very basic introduction to the planets of our solar system.
Author : Jerrold H. Suddath
Publisher : Unknown
Page : 20 pages
File Size : 49,5 Mb
Release : 1961
Category : Artificial satellites
ISBN : UIUC:30112106632133
Summary: A theoretical study was made of the angular motions of spinning bodies in space. The analysis was based on Euler's dynamic equations which were linearized and solved analytically. The results of the study are directly applicable only to spin-stabilized vehicles with constant moments of inertia and angular displacements not exceeding about 15°. Simple analytical expressions were obtained which relate angular motions to spin-rate and inertia distributions for a given disturbance. Consideration was given to the effects produced by having artificial damping in the system. The study included numerical examples and comparisons of analytical solutions with machine solutions of exact dynamic equations. The analysis indicated that angular motions are sensitive to inertia distributions. In considering a rectangular-pulse pitching moment, it was found that the residual motion was very sensitive to the time at which the moment was removed. Artificial damping due to a perfect proportional control system seemed to be more advantageous to pencil-like configurations than to disk-like configurations.
Author : IglooBooks
Publisher : Igloo Books
Page : 10 pages
File Size : 54,9 Mb
Release : 2020-06-02
Category : Juvenile Nonfiction
ISBN : 1838523944
Discover the wonders of space with amazing spinning pages! Turn the panels to send a rocket blasting off and make stars shoot across the sky. Read and play along to learn all about space.
Author : Graham Winston
Publisher : Xlibris Corporation
Page : 83 pages
File Size : 53,9 Mb
Release : 2012-05-15
Category : Nature
ISBN : 9781469192888
Global warming is a major phenomenon that is negatively affecting Earth. But what most people dont realize is that this effect is not limited within the planets atmosphere; it may also affect Earths journey through space. In Global Warming and Earths Evolution, author Graham Winston reveals that the bigger picture is bigger than Global Warming and Global Warming is only the tip of the iceberg of Earths own challenges. The book describes the real truths of Global Warming is mainly caused by mans unnecessary destruction of natural resources earth depends on to be in a good condition to successfully complete its next evolution cycle. The book explains the importance of the cycles and what evolutionary changes occurred on earth. Many previous unexplained phenomena could be linked to earths evolutionary cycles. The extinction of the dinosaur, the birth of the Grand Canyon: why has no large object recently collided with the Moon when millions of craters exist on the Moon? Why has the impacts stopped and when will the impacts start happening again? These and other fascinating examples of unsolved phenomena will open the minds of many readers to this new dimension of thinking what happened on earth millions of years ago and whether earth will survive the next evolutionary cycle. Global Warming has caused a negative effect on earth natural defense mechanism earth depends on to survive the severe challenges when close to the core of the Milky Way Galaxy. About the Author Graham Winstons professional experience spans over 20 years and involves solving complex problems. To achieve success in these business fields Winston solved many complex problems. The common skill applied across these fields was the development of innovative thinking. This later led to apply these same problem-solving techniques on Global Warming and Earths evolution cycles to understand the relationship between Global Warming and Earths own evolutionary journey as Earth travels across the Universe.
Author : Ivan T. Todorov
Publisher : Springer Science & Business Media
Page : 78 pages
File Size : 51,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642828683
These notes arose from a series of lectures first presented at the Scuola Interna zionale Superiore di Studi Avanzati and the International Centre for Theoretical Physics in Trieste in July 1980 and then, in an extended form, at the Universities of Sofia (1980-81) and Bielefeld (1981). Their objective has been two-fold. First, to introduce theorists with some background in group representations to the notion of twistors with an emphasis on their conformal properties; a short guide to the literature on the subject is designed to compensate in part for the imcompleteness and the one-sidedness of our review. Secondly, we present a systematic study of po sitive energy conformal orbits in terms of twistor flag manifolds. They are interpre ted as cl assi ca 1 phase spaces of "conformal parti cl es"; a characteri sti c property of such particles is the dilation invariance of their mass spectrum which, there~ fore, consists either of the point zero or of the infinite interval 222 o
Author : Ralph D. Lorenz
Publisher : Springer Science & Business Media
Page : 369 pages
File Size : 47,7 Mb
Release : 2007-02-02
Category : Science
ISBN : 9780387472898
More frisbees are sold each year than baseballs, basketballs and footballs combined. Yet these familiar flying objects have subtle and clever aerodynamic and gyrodynamic properties which are only recently being documented by wind tunnel and other studies. In common with other rotating bodies discussed in this readily accessible book, they are typically not treated in textbooks of aeronautics and the literature is scattered in a variety of places. This book develops the theme of disc-wings and spinning aerospace vehicles in parallel. Since many of the examples are recreational, anyone who enjoys these activities will likely find it profitable and enjoyable. In addition to spinning objects of various shapes, several exotic manned aircraft with disc planforms have been proposed and a prototypes built – these include a Nazi ‘secret weapon’ and the De Havilland Avrocar, also discussed in the book. Boomerangs represent another category of spinning aerodynamic body whose behavior can only be understood by coupling aerodynamics with gyrodynamics. The narrative, supported by equations and graphs, explains how the shape and throw of a boomerang relates to its trajectory. The natural world presents still other examples, namely the samaras or ‘seed-wings’ of many tree species, which autorotate during their descent, like a helicopter whose engine has failed. The flight performance of these spinning wings directly affects the dispersal and thus the evolutionary competitiveness of the trees concerned. Samara-type configurations are also considered for instrumentation and other payload dispersal applications. In short, the book discusses a range of familiar, connected, but largely undeveloped, topics in an accessible, but complete, manner. From the reviews of the first edition: "In his fascinating book Spinning Flight, Ralph Lorenz provides a rich feast of ... examples of spinning bodies ... . The book is well organized ... . The discussion in the book ... should be accessible to readers with some elementary understanding of aerodynamic principles. For the expert, the book is full of open problems ... . Its scope is extensive ... . In this respect, there may be something for everyone within its attractively designed cover ... ." (H. K. Moffatt, Nature, Vol. 444, December, 2006) "If you liked physics at school, then this book is for you. It concerns itself with flying objects that spin through the air, and even tells you how to impress your friends with the biomechanics of Frisbees. ... there is plenty of information at all levels, and the book has a wealth of detail that only an aerospace engineer like Lorenz could have come up with." (Len Fisher, BBC Focus, February, 2007)
Author : Frank Arntzenius,Cian Seán Dorr
Publisher : Oxford University Press
Page : 297 pages
File Size : 40,9 Mb
Release : 2012-01-19
Category : Philosophy
ISBN : 9780199696604
Frank Arntzenius presents a series of radical ideas about the structure of space and time, and establishes a new metaphysical position which holds that the fundamental structure of the physical world is purely geometrical structure. He argues that we should broaden our conceptual horizons and accept that spaces other than spacetime may exist.
Author : Dana Meachen Rau
Publisher : Capstone
Page : 28 pages
File Size : 49,7 Mb
Release : 2006
Category : Juvenile Nonfiction
ISBN : 1404811389
A very basic introduction to the planets of our solar system.
Author : Hodder & Stoughton
Publisher : Unknown
Page : 128 pages
File Size : 43,6 Mb
Release : 2000-04-17
Category : Electronic
ISBN : 0750030976
Author : Claire Bampton,David Hawcock
Publisher : Reader's Digest Children's Books
Page : 0 pages
File Size : 51,5 Mb
Release : 1999-03
Category : Solar system
ISBN : 1575842831
Kids explore the spatial environment when they journey through the solar system and acquire important facts on the Sun, the nine planets, and their Moons. Full color. 4 spreads.
Author : M. Rivas
Publisher : Springer Science & Business Media
Page : 337 pages
File Size : 46,5 Mb
Release : 2006-04-11
Category : Science
ISBN : 9780306471339
Classical spin is described in terms of velocities and acceleration so that knowledge of advanced mathematics is not required. Written in the three-dimensional notation of vector calculus, it can be followed by undergraduate physics students, although some notions of Lagrangian dynamics and group theory are required. It is intended as a general course at a postgraduate level for all-purpose physicists. This book presents a unified approach to classical and quantum mechanics of spinning particles, with symmetry principles as the starting point. A classical concept of an elementary particle is presented. The variational statements to deal with spinning particles are revisited. It is shown that, by explicitly constructing different models, symmetry principles are sufficient for the description of either classical or quantum-mechanical elementary particles. Several spin effects are analyzed.
Author : C. William Martz,United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 32 pages
File Size : 49,9 Mb
Release : 1961
Category : Approximation theory
ISBN : NASA:31769000421597
The analysis includes nonconstant spin rates and inertias and considers the effects of time-varying thrust misalinements, mass unbalance, and jet damping. The method was developed for bodies having small transverse angular velocities. Results are presented in the form of equations for space-referenced Euler angles, flight-path angles, body-referenced attitude rates, and earth-referenced vehicle-trajectory coordinates. Also, equations for maximum wobble have been derived for certain input conditions. Comparisons with numerical solutions are included for two sample problems.
Author : James J. Adams
Publisher : Unknown
Page : 34 pages
File Size : 42,9 Mb
Release : 1961
Category : Space vehicles
ISBN : UIUC:30112106872556
Author : James J. Buglia
Publisher : Unknown
Page : 32 pages
File Size : 47,5 Mb
Release : 1961
Category : Space vehicles
ISBN : NASA:31769000421548
Author : Marcel J. Sidi
Publisher : Cambridge University Press
Page : 434 pages
File Size : 48,9 Mb
Release : 1997
Category : Science
ISBN : 0521787807
This 1997 book explains basic theory of spacecraft dynamics and control and the practical aspects of controlling a satellite.
