Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Srinivas R. Vadali"'
Autor:
Bharat Mahajan, Srinivas R. Vadali
Publikováno v:
The Journal of the Astronautical Sciences. 67:387-426
Lambert’s two-body orbital boundary value problem (BVP) is the determination of the terminal velocity vectors of a trajectory connecting two fixed positions in a specified transfer time. The solution to Lambert’s problem is often the basis for pr
State-Transition Matrix for Satellite Relative Motion in the Presence of Gravitational Perturbations
Publikováno v:
Journal of Guidance, Control, and Dynamics. 42:1441-1457
A state-transition matrix (STM) for the relative motion of artificial satellites is presented in this work that is valid in the presence of the gravitational spherical harmonic perturbations. The p...
Publikováno v:
AIAA Scitech 2020 Forum.
Publikováno v:
Celestial Mechanics and Dynamical Astronomy. 130
A novel approach for the exact Delaunay normalization of the perturbed Keplerian Hamiltonian with tesseral and sectorial spherical harmonics is presented in this work. It is shown that the exact solution for the Delaunay normalization can be reduced
Publikováno v:
Journal of Spacecraft and Rockets. 52:863-872
A precise and convenient targeting architecture for accomplishing the rendezvous of a lunar lander with an orbiter in a near-circular lunar parking orbit is proposed in this paper. This procedure enables a systematic design and refinement of the numb
Publikováno v:
Journal of Guidance, Control, and Dynamics. 38:315-322
AUTONOMOUS lunar rendezvous missions have drawn increasing interest in recent years due to the future human and robotic lunar exploration applications [1,2]. For example, the Chinese lunar exploration mission phase III, scheduled for launch in 2017,
Publikováno v:
Journal of Guidance, Control, and Dynamics. 37:674-681
The subject of this paper is a new class of planar non-Keplerian orbits made possible by relatively high performance solar sails. The class of noncircular orbits is symmetric with respect to the sun–perihelion line and the orbital angular momentum
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Publikováno v:
The Journal of the Astronautical Sciences. 60:378-395
In this paper a new family of three dimensional (3D) non-Keplerian orbits is produced by using ideally reflective solar sailing. A sailcraft departs from the Earth orbit to accomplish a novel periodic orbit with orbital angular momentum reversing fou
Autor:
Srinivas R. Vadali, D. H. Cho
Publikováno v:
The Journal of the Astronautical Sciences. 60:313-336
This paper presents variations of the Successive Backward Sweep (SBS) method for solving nonlinear optimal control problems with terminal constraints. The state-costate differential equations are linearized and discretized explicitly in time by a tru