Hop and Stop RPO Sequence

The Hop and Stop RPO sequence is a single move between relative positions followed by a stop of all relative motion. This sequence creates a “hop” for the chase satellite from the current position to a new desired relative position. At the end of the hop, the relative motion to the target is zero at that instant.

The main maneuver occurs at the beginning of the sequence to initiate the transfer. A second maneuver stops the satellite at the desired final relative position within the desired transfer time and stops all motion relative to the target.

The following picture shows an example hop from an initial position on the VBar at -1000m to a final position of +500 m on the RBar over two hours of flight time.

Watch the following video to learn more about the RPO sequence on this page.

Sequence Parameters

Option	Description
Desired_Radial	Enter the final radial offset to the target after the Hop.
Desired_InTrack	Enter the final in-track offset to the target after the Hop.
Desired_CrossTrack	Enter the cross-track offset to the target after the HOP.
Hop_Duration	Enter the duration of the Hop sequence to get from the initial position to the desired relative position.
Engine_Name	Enter, as a string, the name of the finite maneuver engine model.
Maneuver_Type	Select the type of maneuver, "Impulsive" or "Finite," from the drop-down list.