Optimal Pulse Strategies for Relative Orbit Transfer Along a Circular Orbit

2011 ◽  
Vol 34 (5) ◽  
pp. 1329-1341 ◽  
Author(s):  
Ryo Jifuku ◽  
Akira Ichikawa ◽  
Mai Bando
Keyword(s):  
Circular Orbit ◽  
Orbit Transfer ◽  
Relative Orbit

Optimal Impulsive Relative Orbit Transfer Along a Circular Orbit

2008 ◽  
Vol 31 (4) ◽  
pp. 1014-1027 ◽  
Author(s):  
Yoshihiro Ichimura ◽  
Akira Ichikawa
Keyword(s):  
Circular Orbit ◽  
Orbit Transfer ◽  
Relative Orbit

scholarly journals Circular Orbit Target Capture Using Space Tether-Net System

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Guang Zhai ◽  
Jing-rui Zhang ◽  
Zhang Yao
Keyword(s):  
Circular Orbit ◽  
Initial Conditions ◽  
Variable Separation ◽  
State Transformation ◽  
Space Tether ◽  
Target Capture ◽  
Relative Orbit ◽  
Orbit Dynamic ◽  
Deployment Dynamics ◽  
Dynamic Perturbation

The space tether-net system for on-orbit capture is proposed in this paper. In order to research the dynamic behaviors during system deployment, both free and nonfree deployment dynamics in circular orbit are developed; the system motion with respect to Local Vertical and Local Horizontal frame is also researched with analysis and simulation. The results show that in the case of free deployment, the capture net follows curve trajectories due to the relative orbit dynamic perturbation, and the initial deployment velocities are planned by state transformation equations for static and floating target captures; in the case of non-free deployment, the system undergoes an altitude libration along the Local Vertical, and the analytical solutions that describe the attitude libration are obtained by using variable separation and integration. Finally, the dynamics of postdeployment system is also proved marginally stable if the critical initial conditions are satisfied.

Spectroscopic Observations of Visual Double Stars

1965 ◽  
Vol 5 ◽  
pp. 109-111
Author(s):  
Frederick R. West
Keyword(s):  
Radial Velocity ◽  
High Dispersion ◽  
Velocity Difference ◽  
Spectrograph Slit ◽  
Spectroscopic Observations ◽  
Double Stars ◽  
Visual Double Stars ◽  
Relative Orbit ◽  
Two Component ◽  
Star Images

There are certain visual double stars which, when close to a node of their relative orbit, should have enough radial velocity difference (10-20 km/s) that the spectra of the two component stars will appear resolved on high-dispersion spectrograms (5 Å/mm or less) obtainable by use of modern coudé and solar spectrographs on bright stars. Both star images are then recorded simultaneously on the spectrograph slit, so that two stellar components will appear on each spectrogram.

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