Automated Rendezvous and Docking of Spacecraft (Cambridge by Dr Wigbert Fehse

By Dr Wigbert Fehse

This definitive reference for house engineers presents an summary of the key concerns governing method and mating recommendations, and process techniques for rendezvous & docking/berthing (RVD/B). those matters are addressed and defined in a fashion that aerospace engineers, scholars or even novices to the sector can collect a uncomplicated realizing of RVD/B.

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Example text

The rate of the true anomaly can be derived from Kepler’s second law, h = µ p = µa(1 − e2 ), and the specific angular momentum of the orbit, h = νr ˙ 2 . With these relations and r from Eq. 6. Definition of orbital elements in an Earth orbit. The orbital period of an elliptic orbit can be derived from Eq. 8) From Eq. 10) V2 2 − The change of the mean phase difference between chaser and the target over time is ∆Φ = (nc − nt )∆t. Per orbital revolution of the target, the phase advance of the chaser becomes, with Eq.

15. −V-bar departure. 06 m/s applied to the departing vehicle by the springs of the docking mechanism. The resulting trajectory would soon leave the departure cone, which has been assumed to have a half cone angle of 10 deg. 05 m/s in the −R-direction to minimise the plume impact on the station. 08 m/s follows after 420 s to keep the vehicle inside the departure corridor. 2 m/s each can be applied without too much impact by the plume on the station. A departure corridor is usually defined for a distance of a few hundred metres, after which the departure trajectory is free to assume any shape, as long as it is moving away from the target.

9). 3). A detailed discussion of the launch and phasing orbit manoeuvres has been provided by J. Legenne in Carrou (1995). 1 are given in the orbital plane frame Fop . Equations of motion in this frame can conveniently be used for trajectory analysis until the chaser vehicle is in the close vicinity of the target. For relative navigation it becomes more convenient to keep one of the spacecraft as a fixed point. e. to look at the chaser motion as an astronaut sitting in the target vehicle would. 1.

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