Angular motion control of electric propulsion spacecraft transfers between L1 and L2 libration points of the Earth-Moon system

2018 ◽  
Author(s):  
Maksim Fain ◽  
Olga Starinova ◽  
Irina Chernyakina
Keyword(s):  
Motion Control ◽  
Electric Propulsion ◽  
Libration Points ◽  
Angular Motion ◽  
Moon System ◽  
The Earth ◽  
L1 And L2

Motion Control of Electric Propulsion Spacecraft Transfers between the Libration Points L1 and L2 of the Earth–Moon System

2019 ◽  
pp. 66-74
Author(s):  
M.K. Fain ◽  
O.L. Starinova
Keyword(s):  
Electric Propulsion ◽  
Optimal Solution ◽  
Libration Points ◽  
Coordinate Frame ◽  
Control Laws ◽  
Moon System ◽  
The Earth ◽  
Nonlinear Motion ◽  
Sequential Linearization ◽  
L1 And L2

This article presents a study of nonlinear motion of an electric propulsion spacecraft. Spacecraft transfers between the libration points L1 and L2 of the Earth-Moon system are analyzed. The influence of the shaded areas and gravitational effects of the Earth, the Moon and the Sun is taken into account. The mathematical model of the transfers is described within the barycentric coordinate frame. The exact optimal solution of the problem is obtained using Pontryagin’s maximum principle formalism and the numerical solution of the boundary value problem. The method of optimizing the parameters and controls of interplanetary trajectories of the spacecraft based on the optimization of dynamic system components and on Fedorenko’s method of sequential linearization is applied in this study. This method allows limitations on composite functions with Fréchet derivatives. As the results of the simulation, the control laws and corresponding trajectories are obtained.

Destiny+ Dust Analyzer – Campaign & timeline preparation for interplanetary & interstellar dust observation during the 4-year transfer phase from Earth to Phaethon

2020 ◽  
Author(s):  
Maximilian Sommer ◽  
Harald Krüger ◽  
Ralf Srama ◽  
Takayuki Hirai ◽  
Masanori Kobayashi ◽  
...  
Keyword(s):  
Electric Propulsion ◽  
Interstellar Dust ◽  
Impact Ionization ◽  
Interplanetary Space ◽  
Dust Cloud ◽  
Dust Particles ◽  
Transfer Phase ◽  
Moon System ◽  
The Earth ◽  
The Impact

<p align="justify">The Destiny+ mission (Demonstration and Experiment of Space Technology for Interplanetary voyage Phaethon fLyby and dUst Science) has been selected as part of its M-class Space Science Program by the Japanese space agency JAXA/ISAS and is set to launch in 2023/2024. The mission target is the active asteroid (3200) Phaethon with a projected flyby in early 2028. The scientific payload consists of two cameras (the Telescopic Camera for Phaethon, TCAP, and the Multi-band Camera for Phaethon, MCAP), and the Destiny+ Dust Analyzer (DDA). DDA is the technological successor to the Cosmic Dust Analyzer (CDA) aboard Cassini-Huygens, which prominently investigated the dust environment of the Saturnian system. The DDA sensor is designed as a combination of impact ionization time-of-flight mass spectrometer and trajectory sensor, which will allow for the analysis of sub-micron and micron sized dust particles with respect to their composition (mass resolution m/Δm ≈ 100-150), mass, electrical charge, velocity (about 10% accuracy), and impact direction (about 10° accuracy).</p> <p align="justify">Besides attempting to sample the impact-generated dust cloud around Phaethon during the flyby, DDA will be actively observing the interplanetary & interstellar dust environment over the roughly four years spanning cruise phase from the Earth-Moon system through interplanetary space. After launch into a GTO-like orbit, Destiny+ will first employ its solar-electric propulsion system to spiral up to the lunar orbit within about 18 months, followed by a series of lunar swingbys and interim coasting phases in distant cislunar space, accumulating momentum to leave the Earth-Moon system at high excess velocity. The subsequent roughly 2-year interplanetary transfer to intercept Phaethon will be characterized by moderate orbital eccentricity of up to 0.1 and largely unpowered coasting phases.</p> <p align="justify">During these four years, the DDA sensor will benefit from a maximum pointing coverage range enabled by its dual-axis pointing mechanism and spacecraft attitude flexibility (during times of unpowered flight). This will allow for exhaustive mapping and analysis of the different interplanetary dust populations, as well as interstellar dust encountered in the region between 0.9-1.1 AU.</p> <p align="justify">Here, we give a progress report on the science planning efforts for the 4-year transfer phase. We present a tentative observation timeline that assigns scientific campaigns to different phases of the mission, taking into account results of various dust models, as well as operational and technical constraints.</p>

Stabilization of collinear libration points in the earth-moon system

1999 ◽  
Vol 63 (2) ◽  
pp. 189-196 ◽  
Author(s):  
A.A. Dzhumabayeva ◽  
A.L. Kunitsyn ◽  
A.T. Tuyakbayev
Keyword(s):  
Libration Points ◽  
Moon System ◽  
The Earth

A dynamical equivalent to the equilateral libration points of the earth-moon system

1991 ◽  
Vol 50 (1) ◽  
pp. 13-29 ◽  
Author(s):  
Carles D�ez ◽  
�ngel Jorba ◽  
Carles Sim�
Keyword(s):  
Libration Points ◽  
Moon System ◽  
The Earth

Halo-orbit formation in the Earth-Moon system by the electric propulsion spacecraft

2018 ◽  
Author(s):  
Olga Starinova ◽  
Vyacheslav Kupczov ◽  
Changsheng Gao ◽  
Yudon Hu ◽  
Maksim Fain ◽  
...  
Keyword(s):  
Electric Propulsion ◽  
Halo Orbit ◽  
Moon System ◽  
The Earth

scholarly journals On the Lagrange libration points of the perturbed Earth-Moon System

2014 ◽  
Vol 9 (S310) ◽  
pp. 192-193 ◽  
Author(s):  
Tatiana V. Salnikova ◽  
Sergey Ya. Stepanov
Keyword(s):  
Body Problem ◽  
Libration Points ◽  
Moon System ◽  
The Earth ◽  
Four Body Problem

AbstractIn this work we discuss the elusive Kordylewski clouds – dust matter in the neighborhood of the Lagrange libration points L4, L5 of the Earth-Moon system. On the base of restricted planar circular four body problem we get some proof for possibility of existence of four such clouds and some rule to predict the optimal moments of time for their observation.

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