Results 31 to 40 of about 9,881 (218)
Preliminary capture trajectory design for Europa tomography probe [PDF]
, 2018 The objective of this work is the preliminary design of a low-DV transfer from an initial elliptical orbit around Jupiter into a final circular orbit around the moon Europa.
Colasurdo, Guido +2 more
core +1 more source
Implications of cohesive strength in asteroid interiors and surfaces and its measurement
Progress in Earth and Planetary Science, 2018 Recent observations and theory have indicated that rubble pile asteroids may have a small, but finite, level of tensile strength, allowing them to spin above their spin deformation limit as defined in Holsapple (Icarus 205:430–442, 2010).
Daniel J. Scheeres, Paul Sánchez
doaj +1 more source
Real-Time Orbit Determination for Future Korean Regional Navigation Satellite System [PDF]
Journal of Astronomy and Space Sciences, 2016 This paper presents an algorithm for Real-Time Orbit Determination (RTOD) of navigation satellites for the Korean Regional Navigation Satellite System (KRNSS), when the navigation satellites generate ephemeris by themselves in abnormal situations.
Hyungjik Oh +2 more
doaj +1 more source
ASTROD and ASTROD I -- Overview and Progress [PDF]
, 2007 In this paper, we present an overview of ASTROD (Astrodynamical Space Test of Relativity using Optical Devices) and ASTROD I mission concepts and studies.
Anderson J. D. +14 more
core +1 more source
Mathematics, 2020 Obtaining the inverse of a nonlinear monotonic function f(x) over a given interval is a common problem in pure and applied mathematics, the most famous example being Kepler’s description of orbital motion in the two-body approximation.
Daniele Tommasini, David N. Olivieri
doaj +1 more source
Solar Sailing: applications and technology advancement [PDF]
, 2011 Harnessing the power of the Sun to propel a spacecraft may appear somewhat ambitious and the observation that light exerts a force contradicts everyday experiences.
Macdonald, Malcolm
core +2 more sources
Mirror formation control in the vicinity of an asteroid [PDF]
, 2008 Two strategies are presented for the positioning and control of a spacecraft formation designed to focus sunlight onto a point on the surface of asteroid, thereby sublimating the material and ejecting debris creating thrust.
Battin R. H. +11 more
core +2 more sources
Improved GPS-based Satellite Relative Navigation Using Femtosecond Laser Relative Distance Measurements [PDF]
Journal of Astronomy and Space Sciences, 2016 This study developed an approach for improving Carrier-phase Differential Global Positioning System (CDGPS) based realtime satellite relative navigation by applying laser baseline measurement data.
Hyungjik Oh +4 more
doaj +1 more source
Preliminary Test of Adaptive Neuro-Fuzzy Inference System Controller for Spacecraft Attitude Control [PDF]
Journal of Astronomy and Space Sciences, 2012 The problem of spacecraft attitude control is solved using an adaptive neuro-fuzzy inference system (ANFIS). An ANFIS produces a control signal for one of the three axes of a spacecraft’s body frame, so in total three ANFISs are constructed for 3-axis ...
Sung-Woo Kim +2 more
doaj +1 more source
Computation of Eclipse Time for Low-Earth Orbiting Small Satellites
International Journal of Aviation, Aeronautics, and Aerospace, 2019 This paper addresses a method for computing eclipse and daylight time for satellites in LEO. Continuous health-monitoring of the satellite is required for the success the mission.
Sumanth R M
doaj +1 more source