Dynamics and Control of Lorentz-Augmented Spacecraft Relative Motion by Ye Yan Xu Huang & Yueneng Yang

Author:Ye Yan, Xu Huang & Yueneng Yang
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

4.2.3.1 Equatorial Circular Orbit with Nontilted Dipole

The target is assumed to be flying in an equatorial circular orbit with an orbital altitude of 500 km. As discussed in Sect. 4.2.1.1, for this case, the specific charge of Lorentz spacecraft necessary for hovering is irrelevant to the hovering azimuth. Therefore, the required specific charges for different pairs of hovering distance and elevation at this orbital altitude are shown in Fig. 4.5. For example, if the chaser hovers radially above the target by 5 km (i.e., km and ), the necessary specific charge is about C/kg. As shown in Fig. 4.5, the specific charge necessary for hovering generally increases with increasing hovering distance. Furthermore, for hovering in close proximity, the critical elevation is about zero. When , the necessary specific charge is positive, and when , the necessary specific charge is negative, verifying the validity of Eq. (4.24). Given that the near-term feasible maximal specific charge is about C/kg, then the corresponding near-term feasible hovering configurations are shown by the shaded areas in Fig. 4.5.

Fig. 4.5Required specific charges for different hovering distances and elevations. Reprinted from Ref. [1], Copyright 2013, with permission from Elsevier

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