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This work offers an introduction to the topological dynamics of geodesic and horodesic flows for the quotients of a tangent sphere bundle of the Poincaré half-plane model by a Fuchsian group T.

Geodesics (Mathematics) --- Trajectories (Mechanics) --- Curves --- Mechanics --- Geometry, Differential --- Global analysis (Mathematics) --- Mathematics

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This book provides readers with a clear description of the types of lunar and interplanetary trajectories, and how they influence satellite-system design. The description follows an engineering rather than a mathematical approach and includes many examples of lunar trajectories, based on real missions. It helps readers gain an understanding of the driving subsystems of interplanetary and lunar satellites. The tables and graphs showing features of trajectories make the book easy to understand. .

Aeronautics Engineering & Astronautics --- Mechanical Engineering --- Engineering & Applied Sciences --- Space trajectories. --- Space vehicles --- Trajectories --- Astrodynamics --- Space flight --- Trajectories (Mechanics) --- Astronautics. --- Astrophysics. --- Aerospace Technology and Astronautics. --- Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics). --- Space sciences --- Aeronautics --- Astronomical physics --- Astronomy --- Cosmic physics --- Physics --- Aerospace engineering. --- Space sciences. --- Science and space --- Space research --- Cosmology --- Science --- Aeronautical engineering --- Astronautics --- Engineering

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This thesis presents fundamental work that explains two mysteries concerning the trajectory of interplanetary spacecraft. For the first problem, the so-called Pioneer anomaly, a wholly new and innovative method was developed for computing all contributions to the acceleration due to onboard thermal sources. Through a careful analysis of all parts of the spacecraft Pioneer 10 and 11, the application of this methodology has yielded the observed anomalous acceleration. This marks a major achievement, given that this problem remained unsolved for more than a decade. For the second anomaly, the flyby anomaly, a tiny glitch in the velocity of spacecraft that perform gravity assisting maneuvers on Earth, no definitive answer is put forward; however a quite promising strategy for examining the problem is provided and a new mission is proposed. The proposal largely consists in using the Galileo Navigational Satellite System to track approaching spacecraft, and in considering a small test body that approaches Earth from a highly elliptic trajectory.

Physics. --- Extraterrestrial Physics, Space Sciences. --- Theoretical, Mathematical and Computational Physics. --- Aerospace Technology and Astronautics. --- Astrophysics. --- Astronautics. --- Physique --- Astrophysique --- Astronautique --- Space trajectories. --- Space vehicles -- Propulsion systems. --- Trajectory optimization -- Mathematical models. --- Astronomy & Astrophysics --- Physical Sciences & Mathematics --- Astrophysics --- Trajectory optimization --- Linear programming. --- Mathematical models. --- Optimization, Trajectory --- Space vehicles --- Trajectories --- Space sciences. --- Aerospace engineering. --- Aerodynamics --- Space trajectories --- Astrodynamics --- Space flight --- Trajectories (Mechanics) --- Production scheduling --- Programming (Mathematics) --- Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics). --- Space sciences --- Aeronautics --- Astronomical physics --- Astronomy --- Cosmic physics --- Physics --- Mathematical physics. --- Aeronautical engineering --- Astronautics --- Engineering --- Physical mathematics --- Science and space --- Space research --- Cosmology --- Science --- Mathematics