The movement of bodies in space (like spacecraft, satellites, and space stations) must be predicted and controlled with precision in order to ensure safety and efficacy. Kinematics is a field that develops descriptions and predictions of the motion of these bodies in 3D space. This course in Kinematics covers four major topic areas: an introduction to particle kinematics, a deep dive into rigid body kinematics in two parts (starting with classic descriptions of motion using the directional cosine matrix and Euler angles, and concluding with a review of modern descriptors like quaternions and Classical and Modified Rodrigues parameters). The course ends with a look at static attitude determination, using modern algorithms to predict and execute relative orientations of bodies in space.
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Kinematics: Describing the Motions of Spacecraft
Ce cours fait partie de Spécialisation Spacecraft Dynamics and Control
Instructeur : Hanspeter Schaub
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Ce que vous apprendrez
Differentiate a vector as seen by another rotating frame and derive frame dependent velocity and acceleration vectors
Apply the Transport Theorem to solve kinematic particle problems and translate between various sets of attitude descriptions
Add and subtract relative attitude descriptions and integrate those descriptions numerically to predict orientations over time
Derive the fundamental attitude coordinate properties of rigid bodies and determine attitude from a series of heading measurements
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Il y a 4 modules dans ce cours
This module covers particle kinematics. A special emphasis is placed on a frame-independent vectorial notation. The position velocity and acceleration of particles are derived using rotating frames utilizing the transport theorem.
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13 vidéos3 devoirs
This module provides an overview of orientation descriptions of rigid bodies. The 3D heading is here described using either the direction cosine matrix (DCM) or the Euler angle sets. For each set the fundamental attitude addition and subtracts are discussed, as well as the differential kinematic equation which relates coordinate rates to the body angular velocity vector.
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18 vidéos1 lecture10 devoirs
This module covers modern attitude coordinate sets including Euler Parameters (quaternions), principal rotation parameters, Classical Rodrigues parameters, modified Rodrigues parameters, as well as stereographic orientation parameters. For each set the concepts of attitude addition and subtraction is developed, as well as mappings to other coordinate sets.
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29 vidéos18 devoirs
This module covers how to take an instantaneous set of observations (sun heading, magnetic field direction, star direction, etc.) and compute a corresponding 3D attitude measure. The attitude determination methods covered include the TRIAD method, Devenport's q-method, QUEST as well as OLAE. The benefits and computation challenges are reviewed for each algorithm.
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13 vidéos5 devoirs1 évaluation par les pairs
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Recommandé si vous êtes intéressé(e) par Physics and Astronomy
Northwestern University
Northwestern University
ISAE-SUPAERO
Università di Napoli Federico II
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