Attitude Dependent De-Orbit Lifetime Analysis of an Aerodynamic Drag Sail Demonstration Spacecraft and Detailed Thermal Subsystem Design for a Polar Orbiting Communications Nanosatellite

Attitude Dependent De-Orbit Lifetime Analysis of an Aerodynamic Drag Sail Demonstration Spacecraft and Detailed Thermal Subsystem Design for a Polar Orbiting Communications Nanosatellite
Author: Vincent Claudio Franco Tarantini
Publisher:
Total Pages:
Release: 2012
Genre:
ISBN: 9780494930472

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Passive Drag Sail Applications for the Accelerated Deorbit and Targeted Reentry of Spacecraft

Passive Drag Sail Applications for the Accelerated Deorbit and Targeted Reentry of Spacecraft
Author: Andrew Michael Sweeten
Publisher:
Total Pages: 107
Release: 2021
Genre: Electronic dissertations
ISBN:

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In the relatively short time that space has been an asset to humans, the amount of debris occupying the region has become a noticeable concern. Maintaining the usability of space for future generations requires consideration of novel methods to remove debris and otherwise prevent space from becoming further congested. One such proposed method is aerodynamic drag sails to accelerate the natural deorbit process caused by the high-altitude atmosphere. The method, properly implemented, could cause the spacecraft to reenter the atmosphere and burn up without requiring the planning of additional maneuvers, potentially saving time and money while still meeting international requirements. Analysis of the technique requires solving the expected times in orbit and selecting a sail that optimizes cost relative to the spacecraft's orbital lifetime, initially using CubeSats. Atmospheric drag, however, is only one of many forces that may perturb a spacecraft along its trajectory. Solar radiation pressure is another source of perturbing forces acting on large surfaces in the direction of the Sun. After including these forces in high-fidelity deorbit analysis, one can predict where the spacecraft would likely impact the Earth if components do not burn up in Earth's atmosphere. To prioritize the safety of life and property on the surface, legal requirements dictate the location where the spacecraft may impact the surface. Since a passive drag sail does not have active control authority, the sail's initial deployment timing, orientation, and altitude dictate the final reentry point for a given gravitational and atmospheric drag model. Based on specific initial conditions, it is possible to show that a drag sail is an effective and efficient method of safely deorbiting a spacecraft while optimizing cost and conforming to legal requirements.

Spacecraft Attitude Dynamics

Spacecraft Attitude Dynamics
Author: Peter C. Hughes
Publisher: Courier Corporation
Total Pages: 594
Release: 2012-05-23
Genre: Science
ISBN: 048614013X

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Comprehensive coverage includes environmental torques, energy dissipation, motion equations for four archetypical systems, orientation parameters, illustrations of key concepts with on-orbit flight data, and typical engineering hardware. 1986 edition.

Fundamentals of Spacecraft Attitude Determination and Control

Fundamentals of Spacecraft Attitude Determination and Control
Author: F. Landis Markley
Publisher: Springer
Total Pages: 486
Release: 2014-05-31
Genre: Technology & Engineering
ISBN: 1493908022

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This book explores topics that are central to the field of spacecraft attitude determination and control. The authors provide rigorous theoretical derivations of significant algorithms accompanied by a generous amount of qualitative discussions of the subject matter. The book documents the development of the important concepts and methods in a manner accessible to practicing engineers, graduate-level engineering students and applied mathematicians. It includes detailed examples from actual mission designs to help ease the transition from theory to practice and also provides prototype algorithms that are readily available on the author’s website. Subject matter includes both theoretical derivations and practical implementation of spacecraft attitude determination and control systems. It provides detailed derivations for attitude kinematics and dynamics and provides detailed description of the most widely used attitude parameterization, the quaternion. This title also provides a thorough treatise of attitude dynamics including Jacobian elliptical functions. It is the first known book to provide detailed derivations and explanations of state attitude determination and gives readers real-world examples from actual working spacecraft missions. The subject matter is chosen to fill the void of existing textbooks and treatises, especially in state and dynamics attitude determination. MATLAB code of all examples will be provided through an external website.

Spacecraft Modeling, Attitude Determination, and Control

Spacecraft Modeling, Attitude Determination, and Control
Author: Yaguang Yang
Publisher: CRC Press
Total Pages: 159
Release: 2019-02-06
Genre: Science
ISBN: 0429822138

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This book discusses all spacecraft attitude control-related topics: spacecraft (including attitude measurements, actuator, and disturbance torques), modeling, spacecraft attitude determination and estimation, and spacecraft attitude controls. Unlike other books addressing these topics, this book focuses on quaternion-based methods because of its many merits. The book lays a brief, but necessary background on rotation sequence representations and frequently used reference frames that form the foundation of spacecraft attitude description. It then discusses the fundamentals of attitude determination using vector measurements, various efficient (including very recently developed) attitude determination algorithms, and the instruments and methods of popular vector measurements. With available attitude measurements, attitude control designs for inertial point and nadir pointing are presented in terms of required torques which are independent of actuators in use. Given the required control torques, some actuators are not able to generate the accurate control torques, therefore, spacecraft attitude control design methods with achievable torques for these actuators (for example, magnetic torque bars and control moment gyros) are provided. Some rigorous controllability results are provided. The book also includes attitude control in some special maneuvers, such as orbital-raising, docking and rendezvous, that are normally not discussed in similar books. Almost all design methods are based on state-spaced modern control approaches, such as linear quadratic optimal control, robust pole assignment control, model predictive control, and gain scheduling control. Applications of these methods to spacecraft attitude control problems are provided. Appendices are provided for readers who are not familiar with these topics.

Spacecraft Attitude Determination and Control

Spacecraft Attitude Determination and Control
Author: J.R. Wertz
Publisher: Springer Science & Business Media
Total Pages: 877
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 9400999070

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Roger D. Werking Head, Attitude Determination and Control Section National Aeronautics and Space Administration/ Goddard Space Flight Center Extensiye work has been done for many years in the areas of attitude determination, attitude prediction, and attitude control. During this time, it has been difficult to obtain reference material that provided a comprehensive overview of attitude support activities. This lack of reference material has made it difficult for those not intimately involved in attitude functions to become acquainted with the ideas and activities which are essential to understanding the various aspects of spacecraft attitude support. As a result, I felt the need for a document which could be used by a variety of persons to obtain an understanding of the work which has been done in support of spacecraft attitude objectives. It is believed that this book, prepared by the Computer Sciences Corporation under the able direction of Dr. James Wertz, provides this type of reference. This book can serve as a reference for individuals involved in mission planning, attitude determination, and attitude dynamics; an introductory textbook for stu dents and professionals starting in this field; an information source for experimen ters or others involved in spacecraft-related work who need information on spacecraft orientation and how it is determined, but who have neither the time nor the resources to pursue the varied literature on this subject; and a tool for encouraging those who could expand this discipline to do so, because much remains to be done to satisfy future needs.

Smaller Satellites: Bigger Business?

Smaller Satellites: Bigger Business?
Author: Michael J Rycroft
Publisher: Springer Science & Business Media
Total Pages: 610
Release: 2013-06-29
Genre: Technology & Engineering
ISBN: 9401730083

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Y. Fujimori, Symposium Programme Committee Chair, and Faculty Member, International Space University e-mail: [email protected] M.Rycroft, Faculty Member, International Space University e-mail: [email protected] N. Crosby, International Space University e-mail: [email protected] For the sixth annual ISU Symposium the theme was "Smaller Satellites: Bigger Business? Concepts, Applications and Markets for Micro/Nanosatellites in a New Information World". Thus, the Symposium addressed the crucial question: are small satellites the saviour of space programmes around the world It did this from the unique perspective of the International Space today? University - the interdisciplinary, international and intercultural perspective. This Symposium brought together a variety of people working on small satellites - engineers, scientists, planners, providers, operators, policy makers and business executives, together with representatives from regulatory bodies, from national and international organizations, and from the finance sector, and also entrepreneurs. Discussion and debate were encouraged, based on the papers presented and those published here.

Nasa Systems Engineering Handbook - Nasa Sp-2016-6105 Rev2

Nasa Systems Engineering Handbook - Nasa Sp-2016-6105 Rev2
Author: National Aeronautics and Space Administration
Publisher: Createspace Independent Publishing Platform
Total Pages: 298
Release: 2017-11-03
Genre:
ISBN: 9781979381475

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This handbook, "NASA Systems Engineering Handbook," is intended to provide general guidance and information on systems engineering that will be useful to the NASA community. It provides a generic description of Systems Engineering (SE) as it should be applied throughout NASA. A goal of the handbook is to increase awareness and consis¬tency across the Agency and advance the practice of SE. This handbook provides perspectives relevant to NASA and data particular to NASA. This handbook describes systems engineering best practices that should be incorporated in the development and implementation of large and small NASA programs and projects. The engineering of NASA systems requires a systematic and disciplined set of processes that are applied recursively and iteratively for the design, development, operation, maintenance, and closeout of systems throughout the life cycle of the programs and projects. The scope of this handbook includes systems engineering functions regardless of whether they are performed by a manager or an engineer, in-house or by a contractor.