Difference between revisions of "Tutorial: Advanced Orbiting"

From Kerbal Space Program Wiki
Jump to: navigation, search
(Advanced Orbiting Maneuvers)
(I have added my method for synchronizing orbits)
Line 32: Line 32:
 
== Orbit Synchronization ==
 
== Orbit Synchronization ==
 
In progress.
 
In progress.
 +
 +
=== The Exley Maneuver === (As of 0.17.1)
 +
 +
In order to easily meet with a target planet's Sphere of Influence, you will need to perform a few burns while at either the Periapsis or Apoapsis of your transfer orbit.
 +
 +
==== Planets outside your original orbit ====
 +
 +
If you are meeting with a planet whose orbit is outside of your starting orbit, create a transfer orbit such that your Apoapsis is as close as possible to your target planet's orbit.
 +
 +
Next, make a few orbits until the target planet is slightly in front of you when you reach your Apoapsis. Begin a burn in the direction of your velocity until you see your orbit cross the target planet's near your Apoapsis for a fraction of a second. If you overshoot, simply turn around and burn against the direction of your velocity until the cross orbit is visible again. If your transfer orbit exceeds the planet's orbit, then you have gone too far, and have either missed the cross orbit, or do not have an Apoapsis close enough to the target orbit to be affected by the planet's Sphere of Influence.
 +
 +
==== Planets inside your original orbit ====
 +
If you are meeting with a planet whose orbit is inside of your starting orbit, create a transfer orbit such that your Periapsis is as close as possible to your target planet's orbit.
 +
 +
Next, make a few orbits until the target planet is slightly behind you when you reach your Periapsis. Begin a burn in the opposite direction of your velocity until you see your orbit cross the target planet's near your Periapsis for a fraction of a second. If you overshoot, simply turn around and burn with the direction of your velocity until the cross orbit is visible again. If your transfer orbit goes within the planet's orbit, then you have gone too far, and have either missed the cross orbit, or do not have a Periapsis close enough to the target orbit to be affected by the planet's Sphere of Influence.
 +
 +
==== Finally ====
 +
Once you are in the Cross Orbit, burn against the direction of your velocity until the orbit goes around your target planet.
 +
 +
Good luck!
 +
  
 
[[Category:Tutorials]]
 
[[Category:Tutorials]]
  
 
{{stub}}
 
{{stub}}

Revision as of 02:00, 10 November 2012

This page has been protected for the following reason:

This is one of the more important articles. Keep it safe. Mastado 12:41 7 January 2012 (CST)

Hohmann Transfer

Burn prograde at periapsis until the apoapsis reaches the desired altitude.

Then, at apoapsis, burn prograde until periapsis is at the desired altitude.

Burning retrograde at these same points will lower your orbit.

Bi-Elliptical Transfer

The bi-elliptical transfer can be more efficient (but slower) than the Hohmann transfer orbit in some cases.

Start by burning prograde until your orbit becomes elliptical.

At apoapsis, burn prograde until the periapsis reaches the altitude of your desired orbit.

Once reaching periapsis, burn retrograde until your orbit is circularized.

Opposite burns at these same points will lower your orbit.

Orbital Plane Alignment

The first step in intercepting another orbiting body is to align your orbital plane with the target's orbital plane.

Next is to find the pivot point on your orbit that, when turned clockwise or counterclockwise (from the perspective of camera > ship > orbited object), will cause it to line up with the other orbit.

Next, find the midpoint between your prograde and retrograde motion on the horizon and point your ship toward it. Throttling prograde + 90 degrees on the horizon will cause your orbit to rotate clockwise. Prograde - 90 degrees on the horizon will rotate the orbit counterclockwise. It may take a few rotation sessions to perfect your orbit but this will allow you to match another orbital plane.

It is easier to achieve if your orbit is circular, mostly because you can line up the orbits in the map view much more easily.

Orbit Synchronization

In progress.

=== The Exley Maneuver === (As of 0.17.1)

In order to easily meet with a target planet's Sphere of Influence, you will need to perform a few burns while at either the Periapsis or Apoapsis of your transfer orbit.

Planets outside your original orbit

If you are meeting with a planet whose orbit is outside of your starting orbit, create a transfer orbit such that your Apoapsis is as close as possible to your target planet's orbit.

Next, make a few orbits until the target planet is slightly in front of you when you reach your Apoapsis. Begin a burn in the direction of your velocity until you see your orbit cross the target planet's near your Apoapsis for a fraction of a second. If you overshoot, simply turn around and burn against the direction of your velocity until the cross orbit is visible again. If your transfer orbit exceeds the planet's orbit, then you have gone too far, and have either missed the cross orbit, or do not have an Apoapsis close enough to the target orbit to be affected by the planet's Sphere of Influence.

Planets inside your original orbit

If you are meeting with a planet whose orbit is inside of your starting orbit, create a transfer orbit such that your Periapsis is as close as possible to your target planet's orbit.

Next, make a few orbits until the target planet is slightly behind you when you reach your Periapsis. Begin a burn in the opposite direction of your velocity until you see your orbit cross the target planet's near your Periapsis for a fraction of a second. If you overshoot, simply turn around and burn with the direction of your velocity until the cross orbit is visible again. If your transfer orbit goes within the planet's orbit, then you have gone too far, and have either missed the cross orbit, or do not have a Periapsis close enough to the target orbit to be affected by the planet's Sphere of Influence.

Finally

Once you are in the Cross Orbit, burn against the direction of your velocity until the orbit goes around your target planet.

Good luck!


This article is a stub. You can help KSP Wiki by expanding it.