1–20 of 56 hits
|

    MICROGRAVITY RESTART OF LIQUID ROCKET ENGINE WITH LOW PROPELLANT RESIDUALS

    Romero-Calvo, Alvaro / Urbansky, Vladislav / Yudintsev, Vadim et al. | Springer Verlag | 2024

    The active deorbiting and passivation of launch vehicles has become key for the implementation of modern space

     ...
    Keywords: Aerospace Technology and Astronautics , Astronomy, Astrophysics and Cosmology , Physics and Astronomy

    Analytical Radial Adaptive Method for Spherical Harmonic Gravity Models

    Atallah, Ahmed M. / Bani Younes, Ahmad / Woollands, Robyn M. et al. | Springer Verlag | 2022
    function of increasing altitude, and hence the smaller its contribution to the total gravitational acceleration. To maintain a particular accuracy ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Accuracy and Efficiency Comparison of Six Numerical Integrators for Propagating Perturbed Orbits

    Atallah, Ahmed M. / Woollands, Robyn M. / Elgohary, Tarek A. et al. | Springer Verlag | 2020

    We present the results of a comprehensive study in which the precision and efficiency of six numerical

     ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Efficient Computation of Optimal Low Thrust Gravity Perturbed Orbit Transfers

    Woollands, Robyn / Taheri, Ehsan / Junkins, John L. | Springer Verlag | 2020
    performing continuation on the thrust magnitude to reduce the sharpness of the control switches in early iterations and thus promote convergence. The ...
    Keywords: Method of particular solutions , Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Closed-Loop Software Architecture for Spacecraft Optical Navigation and Control Development

    Teil, Thibaud / Bateman, Samuel / Schaub, Hanspeter | Springer Verlag | 2020
    orbit insertions occur over short periods of time and must occur autonomously. Yet, there are no open-source software packages that provide ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    How Many Impulses Redux

    Free access
    Taheri, Ehsan / Junkins, John L. | Springer Verlag | 2020
    magnitude of velocity impulses that minimize the total impulse. This problem was posed in 1967 by T. N. Edelbaum, and while notable advances have ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Preliminary Results on Optimal Establishment of Solar Sail Formations

    Parsay, Khashayar / Schaub, Hanspeter | Springer Verlag | 2019
    -Synchronous orbits using optimal control theory, assuming that the deputy solar sail is capable of changing its attitude and that the chief solar sail ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Spacecraft Electrostatic Force and Torque Expansions Yielding Appropriate Fidelity Measures

    Hughes, Joseph / Schaub, Hanspeter | Springer Verlag | 2019
    neighboring spacecraft and the local space environment. These forces and torques can be used for a variety of novel touchless actuation concepts. In ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Rapid Charged Geosynchronous Debris Perturbation Modeling of Electrodynamic Disturbances

    Hughes, Joseph / Schaub, Hanspeter | Springer Verlag | 2018
    over short periods. This paper investigates the effects of the isolated Lorentz force, the effects of including or neglecting this and other ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Spacecraft Dynamics Employing a General Multi-tank and Multi-thruster Mass Depletion Formulation

    Panicucci, Paolo / Allard, Cody / Schaub, Hanspeter | Springer Verlag | 2018
    obtain optimal trajectories, the impact of mass variation and depletion of the spacecraft must be thoroughly understood. Some earlier works make ...
    Keywords: Equations of motion , Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Volume Multi-Sphere-Model Development Using Electric Field Matching

    Ingram, Gabriel / Hughes, Joseph / Bennett, Trevor et al. | Springer Verlag | 2018
    Abstract Electrostatic actuation is the process of charging two spacecraft and using the ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Efficient and Adaptive Orthogonal Finite Element Representation of the Geopotential

    Junkins, John L. / Younes, Ahmad Bani / Woollands, Robyn M. et al. | Springer Verlag | 2017
    novel way, through the use of array algebra and Kronecker operations. Approximation of test functions illustrates the resulting algorithms and ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Multiple Revolution Solutions for the Perturbed Lambert Problem using the Method of Particular Solutions and Picard Iteration

    Free access
    Woollands, Robyn M. / Read, Julie L. / Probe, Austin B. et al. | Springer Verlag | 2017
    method of particular solutions and modified Chebyshev-Picard iteration. The ...
    Keywords: Method of particular solutions , Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Unified Lambert Tool for Massively Parallel Applications in Space Situational Awareness

    Free access
    Woollands, Robyn M. / Read, Julie / Hernandez, Kevin et al. | Springer Verlag | 2017
    four individual algorithms, each of which is unique and better suited for solving a particular type of orbit transfer. The first is a Keplerian ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Establishing a Formation of Small Satellites in a Lunar Flower Constellation

    McManus, Lauren / Schaub, Hanspeter | Springer Verlag | 2016
    -sats, deployed from a single mothercraft, are proposed to achieve a lunar constellation. The establishment of a single- and multi-petal ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Extraterrestrial Physics, Space Sciences

    Space Weather Influence on Relative Motion Control using the Touchless Electrostatic Tractor

    Hogan, Erik A. / Schaub, Hanspeter | Springer Verlag | 2016
    Abstract With recent interest in the use of electrostatic forces for contactless tugging and attitude control ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Extraterrestrial Physics, Space Sciences

    Geosynchronous Debris Conjunction Lead-Time Requirements for Autonomous Low-Thrust Disposal Guidance

    Anderson, Paul V. / Schaub, Hanspeter | Springer Verlag | 2016
    Abstract Autonomous, low-thrust guidance for active disposal of geosynchronous debris, subject to collision ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics)

    Touchless Electrostatic Three-dimensional Detumbling of Large Axi-symmetric Debris

    Bennett, Trevor / Schaub, Hanspeter | Springer Verlag | 2015
    Abstract Touchless detumbling of space debris is investigated to enable orbital servicing or active debris ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Extraterrestrial Physics, Space Sciences

    Analytic Transfer Functions for the Dynamics & Control of Flexible Rotating Spacecraft Performing Large Angle Maneuvers

    Elgohary, Tarek A. / Turner, James D. / Junkins, John L. | Springer Verlag | 2015
    evolution of the system in space and time. A Generalized State Space (GSS) system of equations is constructed in the frequency domain to obtain ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Extraterrestrial Physics, Space Sciences

    State Transition Matrix for Perturbed Orbital Motion Using Modified Chebyshev Picard Iteration

    Free access
    Read, Julie L. / Younes, Ahmad Bani / Macomber, Brent et al. | Springer Verlag | 2015
    method utilizes Picard iteration, which generates a sequence of path approximations, and Chebyshev Polynomials, which are orthogonal and also ...
    Keywords: Aerospace Technology and Astronautics , Mathematical Applications in the Physical Sciences , Extraterrestrial Physics, Space Sciences