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What are the best navballs to use for orbit?


Bluecat2007
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Could you explain further? The navball is the round thing in the middle/bottom part of the screen and there’s only 1. You can change the texture of it with a mod but there aren’t different types or models. 

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Quick answer: all of them.

Longer answer: Each of the SAS presets, which you are referring to, has a purpose, and a best  time for use. Sure you could use one, or none, all the time. But that would make things trickier for you. 

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15 minutes ago, Bluecat2007 said:

I mean like the normal, antinormal, marker, prograde.

Best way to learn what those are for is to play the tutorials that come with the game. They are very useful and will teach you the basics of when and where to apply Prograde, Retrograde, and the others to change your orbit at the right time.

 

 

 

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To get an orbit, no matter which direction you start flying, you would go prograde.

You see, unless you are already in an orbit prograde it the name given to the direction your craft is currently travelling in.
A rover on the surface going south by southwest will still be going prograde from the point of view of the rover.

This is because In Space There Is No Up Or Down, North Or South, East Or West.
You need a reference. Such as the Planet you are orbiting, the Sun  or the ship itself.

Around the Sun, Prograde is the direction that the planets travel around it. At least in most systems. This is because planets are usually created by the formation of the Sun. The sun is spinning too and planets tend to go in the direction of that spin.

A captured planet could have a retrograde orbit.

Around a planet, Prograde is  recognised as the direction that the planet is spinning or assumed it would be still spinning if it hadn't wound down and stopped.

A captured moon could have a retrograde orbit

Your ship. Prograde is the direction that it is travelling. Not the direction it happens to be facing.

Firing your engines Prograde means thrusting in the direction you are travelling. This will increase your Apoapsis (Ap) or Perriapsis (Pe) (which ever you are furthest from. Or both if you are directly opposite neither of them. Enough thrust will make your current position the Periapsis and the Apoapsis will move directly opposite 
Firing your engines Retrograde means pointing them in the opposite direction to the one you are travelling in. Reducing Apoapsis
Don't think of it as speeding up or slowing down. That will get confusing. Especially as thrust tends to have the opposite affect on your actual orbit speed. Lower either  and your orbit will be  faster raising them will make it take longer to complete an orbit.

Once in orbit. You would then use Normal and Anti-Normal thrust to change the  inclination of your orbit. (It's tilt or slant)

0 Degrees means you are going exactly around the equator. 90 or -90 would be a polar orbit.

This small amount of information is enough to confuse anyone at first. ) Doubtless others will e only too happy to muddy the waters with but's and ahh's)

In short, if you can understand what I have told you so far, you will do fine. If you don't re-read it until you do. You'll get it eventually.

D

GTG tea's ready.

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The best way to get into orbit around Kerbin is to use a gravity turn. You'll want a reasonably aerodynamic craft with a starting Trust to Weight Ratio around 1.3 and at least 3400 m/s of vacuum ∆v. 
Here is a video demonstrating the process.

 

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