The similitude problem for the simulation of orbits under the central gravity deviation is investigated. The dynamic models are developed with consideration of the magnitude deviation and the orientation deviation of the central gravity, respectively. Similitude theory and dimensional analysis are employed ...
gravity field, C20 and C22 , which are necessary to obtain the moment of inertia by combining with the libration amplitude, could be determined with an accu- racy within the order of 0.1% using datasets from two-dimensional (2D) quasi-satellite orbits (QSOs)...
4a), which may exhibit chaotic behavior under the force of gravity and spring62. We denote \theta as the angle between the spring and the vertical line and r as the length of the spring. \dot{\theta } and \dot{r} correspond to the time derivative of \theta and r, respectively. The...
The presence of atmospheric gas in very low orbits H = 100–200 km, where a spacecraft (SC) with an air-breathing electric propulsion engine (ABEPE) s
The motion is uniquely determined by the values of θ 1 and θ 2 Simple Model: The rods O P 1 and P 1 P 2 are rigid, massless and inextensible. Masses at P 1 and P 2 are subject to a uniform acceleration due to gravity. Compound Model: Masses M 1 and M 2 are uniformly ...
The initial gas-in-place was calculated by gravity-capillary equilibrium. The OGIP was calculated to be 60 TSCF. This is in line with static model. 4.6. Performance of models, a case of proper data integration The constructed fine-scale PHIE model which was in complete agreement with well ...
Surface mass anomalies estimated by mass concentration (mascon) approach using Gravity Recovery and Climate Experiment (GRACE) observations with regularization constraints generally present higher spatial resolution than t
Optimal Trajectories Using Gravity Assisted Maneuver and Solar Electric Propulsion (Sep) Towards Near-Earth-Objects The future interplanetary missions will probably use the conventional chemical rockets to leave the sphere of influence of the Earth, and solar electric pr... DPSD Santos,L Casalino,G ...
Geodetic applications of Low Earth Orbit (LEO) satellites requires accurate satellite orbits. Instead of using onboard Global Navigation Satellite System observations, this contribution treats the LEO satellite constellation independently, using Inter-Satellite Links and the measurements of different ground ne...
Planetary Form and Gravity Pages 45-58 Translational Motion of Aerospace Vehicles Pages 59-115 Orbital Mechanics Pages 117-152 Perturbed Orbits Pages 153-171 The Three-Body Problem Pages 173-192 Rocket Propulsion Pages 193-217 Planetary Atmosphere Pages 219-232 Elements of Aerod...