I'm starting to get the hang of Vizzy. I've finally managed to write a reliable program to get my rockets into Droo orbit. I'm now trying to learn to create one that will get me to Luna. I'm wondering if it's possible to create a burn node in Vizzy. I'm also wondering how you would go about coding the logic to place the node at a specific position in your orbit in relation to the position of the target. I am able to lock Luna at the target but I'm a bit stuck now. Any help would be appreciated.
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449 rhuetherjr4.7 years ago
@sflanker Thanks for the info! The difficulty I'm running into is that without knowing the position of Luna, it's difficult to determine where to burn and for how long.
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Mod sflanker4.7 years ago
It is not currently possible to create burn nodes with Vizzy. However, it is definitely possible to calculate parameters for a burn and execute it with Vizzy, it just takes some doing. For example the flight program in this rocket includes logic to plane a burn to take a rocket from an elliptical orbit to a circular orbit by making a prograde burn at apoapsis. It should be possible to generalize the concepts in that flight program to make a variety of transfer burns from apoapsis or periapsis. If the fight program in that rocket is confusing I'm working on a video to demystify it. You can also find the appropriate timing for your burn using the math here.
For a simpler flight program that only calculates orientation for a burn around apoapsis, and not delta-v for a burn see this craft.
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If you set Luna as your target you can get its position in vizzy.