Landing on cylero

@jacksawild I already landed and returned from cylero but I will still watch the video

@KitKart
vid

I've uploaded a video. You can see me hover along the orbit of your approach and how your ship is way ahead of Cylero. I make another couple of nodes untiul I find an approach that works. At thi spoint in Cylero's orbit it looks like the phase angle is about 80deg. I've left my final adjustments in and me srewing up the final approach in various ways.

Hope it helps.

@jacksawild In case you didn't know, I already uploaded my sandbox. Here is the link: https://www.simplerockets.com/s/b135eg/Cylero-help

@KitKart It doesn't look too far out, it might be a bug with the approach marker. If you get rid of all the planned burns and hover your mouse over the orbit the approach will update as you move your cursor along the orbit. As you approach the apoapsis your ship marker and the planet marker should be intersecting, or quite close.

Maybe if you upload your saved sandbox I could get a decent view.

@jacksawild Ok I have two images and when I plot my second planend burn, my encounter isn't in the right place. Take a look, https://imgur.com/a/TmKvfTe

@KitKart It's difficult to say without seeing what you're doing, but if it is taking you 5km/s to get an encounter from Droo to Cylero then you are probably adding a lot of radial or normal velocity. It should be almost 100% prograde.

It's also important to make the burn at the right time during your parking orbit around Droo. You can see that I make the burn at almost exactly the centre of the dark side of Droo (this would be a 90deg ejection angle and is almost certianly not very efficient). The goal is to get your ejection from Droo SOI to follow as close to parallel to Droo's orbit prograde as you can.

The other part is the phase angle, this is the angle between Droo and Cylero in relation to the sun. I found that Droo being 50deg behind Cylero was a pretty good guesstimate.

Finally there is the fact that Cylero's orbit has a bit of eccentricty to it, so transferring to the side farthest from the sun will cost about 1km/s more than transferring to the closest side.

@jacksawild Wait im confused when your encounter said 1971 m/s, mine always was close to either 4000 m/s or 5000 m/s I don't remember. But other than that, I think I know the basics of getting to cylero and back.

@KitKart You need about 1km/s to slow down in to an orbit, less if you use the atmosphere to do some aerobraking. If you need significantly more than that then your encounter is a little off and your relative speed is too high. Take a look https://youtu.be/UPOiS-21LNw

@jacksawild I can get a encouter with Cylero but I can't do a orbit around it though.

When you say you are 2000km away, do you mean you are unable to slow down enough to get an orbit? To transfer to a planet further out than the orbit you start at (Droo) you want to burn on the side of the planet away from the sun, this way you will be burning prograde along your orbit around the sun and increasing your apoapsis. So you do as much of your burn as you can in the centre of the dark side of the orbit around Droo and you only burn so much that your Sun apoapsis reaches the orbit height of your target (Cylero). A transfer window is the time to do this because you will reach that apoapsis at the same time as the target (Cylero). If you burn higher than the orbit of Cylero then you will be increasing your relative speed , which has to be cancelled out in order to be captured. Another way to think about this is that once you are at an encounter with Cylero you have to raise your sun periapsis to the same height as Cylero (it will still be at Droo height as that is where you left from), this is matching speed with Cylero and if you're close enough you will capture. Cylero has an atmosphere so you can use that to help you slow down, which can make the matching speed burn a lot cheaper.