Results 91 to 100 of about 1,847 (222)

Relative Orbit Control Algorithms and Scenarios for the Inertial Alignment Hold Demonstration Mission by CubeSat Formation Flying

Aerospace
CANYVAL-C is a formation-flying mission that demonstrates a coronagraph utilizing two CubeSats. The coronagraph is a space telescope that blocks sunlight to examine the overcast regions around the sun. It is composed of optical and occult segments.
Soobin Jeon, Sang-Young Park, Geuk-Nam Kim   +2 more
doaj   +1 more source

Comparisons between the circular restricted three-body and bi-circular four body problems for transfers between the two smaller primaries. [PDF]

Sci Rep, 2022
de Almeida Junior AK, de Almeida Prado AFB.   +1 more
europepmc   +1 more source

Long term nonlinear propagation of uncertainties in perturbed geocentric dynamics using automatic domain splitting

, 2014
Current approaches to uncertainty propagation in astrodynamics mainly refer tolinearized models or Monte Carlo simulations. Naive linear methods fail in nonlinear dynamics, whereas Monte Carlo simulations tend to be computationallyintensive. Differential
Makino, Kyoko, Wittig, A, Bernelli-Zazzera, Franco, Zazzera, FB, Di Lizia, Pierluigi, Wittig, Alexander, Makino, K, Armellin, Roberto, Armellin, R, Berz, M., Di Lizia, P, WITTIG, ALEXANDER NICOLAUS, Makino, K., Berz, M, BERNELLI ZAZZERA, FRANCO, Berz, Martin, Zazzera, Franco Bernelli   +16 more
core  

A Learning Approach To Sampling Optimization: Applications in Astrodynamics [PDF]

, 2013
A new, novel numerical optimization algorithm is developed, tested, and used to solve difficult numerical problems from the field of astrodynamics. First, a brief review of optimization theory is presented and common numerical optimization techniques ...
Henderson, Troy Allen
core  

Solving Coplanar Power-Limited Orbit Transfer Problem by Primer Vector Approximation Method

International Journal of Aerospace Engineering, 2012
The coplanar orbit transfer problem has been an important topic in astrodynamics since the beginning of the space era. Though many approximate solutions for power-limited orbit transfer problem have been developed, most of them rely on simplifications of
Weijun Huang
doaj   +1 more source

Search space pruning and global optimization of multiple gravity assist trajectories with deep space manoeuvres

, 2007
This paper deals with the design of optimal multiple gravity assist trajectories with deep space manoeuvres. A pruning method which considers the sequential nature of the problem is presented.
M. Ceriotti, Becerra, Victor M., Nasuto, S. J., Nasuto, S.J., C. Bombardelli, Anderson, J., Bombardelli, C., Ceriotti, M., Anderson, James D., Becerra, V.M., Nasuto, Slawomir J., V.M. Becerra, Becerra, V. M., S.J. Nasuto, J. Anderson, Bombardelli, Claudio   +15 more
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A Comparative Study of Programming Languages for Next-Generation Astrodynamics Systems

, 2016
Due to the computationally intensive nature of astrodynamics tasks, astrodynamicists have relied on compiled programming languages such as Fortran for the development of astrodynamics software.
McLean, Frazer, Cano, Juan Luis, Anderl, Reiner, Eichhorn, Helge   +3 more
core  

Liquid Apogee Engine Burn Plans for The KOREASAT-3 [PDF]

Journal of Astronomy and Space Sciences, 1998
The apogee manoeuvre of is basic elliptical orbit transfer converting orbit plane. The KOREASAT-3 is planed for multi-burn manoeuvres using the liquid apogee engine while the used the apogee kick motor that executes a single burn in the apogee of ...
Jae-Cheol Yoon, Kyu-Hong Choi, Du-Hoan Kim, Bang-Yeop Kim, Eun-Kyou Kim   +4 more
doaj  

Approximate Solutions to Nonlinear Optimal Control Problems in Astrodynamics

, 2013
A method to solve nonlinear optimal control problems is proposed in this work. The method implements an approximating sequence of time-varying linear quadratic regulators that converge to the solution of the original, nonlinear problem.
TOPPUTO, FRANCESCO, BERNELLI ZAZZERA, FRANCO   +1 more
core   +1 more source

Comparative study on the application of evolutionary optimization techniques to orbit transfer maneuvers [PDF]

, 2008
Orbit transfer maneuvers are here considered as benchmark cases for comparing performance of different optimization techniques in the framework of direct methods. Two different classes of evolutionary algorithms, a conventional genetic algorithm and an
Avanzini, Giulio, Minisci, Edmondo, Avanzini, G., Minisci, E.A.   +3 more
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