Results 81 to 90 of about 4,346 (251)

Mappings in Astrodynamics [PDF]

open access: yesSymposium - International Astronomical Union, 1992
We review mappings mainly devised for the study of the dynamics of comets and asteroids. An attempt of a typology according to the method used to devise the mapping and to its deterministic or stochastic character is made.
openaire   +1 more source

The evolution of lunar communication—From the beginning to the present

open access: yesInternational Journal of Satellite Communications and Networking, Volume 42, Issue 3, Page 200-216, May/June 2024.
Since the beginning of the space age, the Moon has been the target of many missions from the 1950s to the present day. Radio communication plays a fundamental role in space vehicle projects because this is the most obvious way to communicate with the ground station and transmit control commands and scientific data.
Andrea Farkasvölgyi   +2 more
wiley   +1 more source

Using Electrodynamic Tethers to Create Artificial Sun-Synchronous Orbits and De-Orbit Remote Sensing Satellites

open access: yesUniverse
This paper has the goal of exploring the potential of electromagnetic propulsion systems based on tethers to create artificial Sun-synchronous orbits for remote sensing satellites, as well as performing station-keeping maneuvers and de-orbiting of the ...
Antonio F. B. A. Prado   +1 more
doaj   +1 more source

A Design Method for Redundant Microthruster Layout With Allocation Error

open access: yesInternational Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
The microthruster is generally chosen as the actuator of the drag‐free satellite control system, and the layout directly affects the stability of the satellite control. Due to the extremely rigorous objectives of drag‐free control, a design method for the redundant thruster layout is proposed in this paper to improve the control stability of the ...
Mingwei Chen   +6 more
wiley   +1 more source

Model Predictive Control for Gliding Descent on Mars

open access: yesApplied Sciences
This paper proposes a closed-loop nonlinear model predictive control for the first time for the trajectory tracking of a spaceplane descending and gliding on Mars.
Jhonathan Murcia-Piñeros   +2 more
doaj   +1 more source

Aero-astrodynamics research review no. 2, July 1 - December 30, 1964 [PDF]

open access: yes, 1965
Aero-astrodynamics - Newtonian aerodynamics, turbulent flux in hot and multicomponent flows, slender body theory, automatic data processing, and hot-wire turbulence measuring ...

core  

Feasibility and Performance of Aerogravity Assists for Ceres Missions

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace
This work investigates the feasibility and performance of aerogravity assist (AGA) maneuvers for missions to Ceres, with emphasis on both interplanetary trajectory design and atmospheric flight dynamics.
Divinaa E Burder
doaj   +1 more source

The Unified State Model. Derivation and Applications in Astrodynamics and Navigation.

open access: yes, 2010
Astrodynamics and Space MissionsAerospace ...
Vittaldev, V. (author)
core  

Editorial. [PDF]

open access: yesJ Astronaut Sci, 2021
Akella MR.
europepmc   +2 more sources

An optimal h6 scheme for solving TPBVP in astrodynamics

open access: yes, 2005
The present paper presents an accurate scheme for the solution of boundary value problems with two-point nonlinear boundary conditions. The proposed scheme is a linear multi-point method of sixth-order accuracy successfully used in uid dynamics and here ...
Topputo, F   +3 more
core   +1 more source

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