Project home: Rendezvous MFD on OrbitHangar
Rendezvous MFD implements the Hill Equations to find a best solution for the final stages of a rendezvous. This tool is not intended for long-distance rendezvous procedures, but is intended to bring the spacecraft close to its target from an already close distance much more precisely than "eye balling it."
- After you've already made a rough rendezvous to within 700Km of your target you can bring up the Rendezvous MFD.
- When you first bring up the Rendezvous MFD, you'll see the base screen which has an interesting looking graph and several numbers. In this section, we'll look at a quick method of using this wonderful tool to finalize Rendezvous and leave the more complex items for later.
- What we'll do is look at the left set of buttons and click the one that says Tgt. This will bring up a textbox where you have to enter the name of your target.
- Now look on the left side again and click DSP. This will change the display to a cross-circle screen with a blue line and possibly a blue cross attached to the line. In order to achieve a rendezvous using as little fuel as possible (critical for realistic craft i.e. Shuttle, Soyuz etc.) you need to find a time solution that will give as little Dv as possible.
- On the right series of buttons is one labeled Set. When you click this one, you'll get a text-box. This is your time to intercept as measured in seconds. I typically use 2200 which is ~ 36 minutes. Generally, the longer the time, the lower the Dv required to slow you down at the Target.
- 2200 Seconds is only a starting point. Now you can use the Tm+ and Tm- buttons on the right to increase or decrease the time needed to intercept your target respectively. I generally use Tm+ as that usually leads to a lesser Dv though Tm- can have good solutions as well. Once you've gotten to a point where Dv is as small as you want, just orient the craft until the blue cross is lined up with the circle. Then burn until Dv is equal to 0 or close to it. You can use Linear thrusters as Dv approaches 0 for a much finer effect. There is an AUT button on the left that suppossedly orients and burns automatically however I personally have not had much success with this particular feature.
Docking is not covered by this tutorial.