Jump to content
  • 0

Ksp Delta-V Map


The Programming Nerd
 Share

Question

6 answers to this question

Recommended Posts

  • 1
14 hours ago, The Programming Nerd said:

Is the delta-v map showing the min or max delta-v usage?

It shows the average of a series of optimum Hohmann transfers.  That means that the numbers will tend to be low.  There are more efficient trajectories, but most of these are not direct transfers; they require increased flight time, gravity assists, or both.  There are infinitely many less efficient trajectories.  As @bewing said, you can be 100% inefficient.

Link to comment
Share on other sites

  • 1

It's not bare minimum - especially the "leaving an atmosphere" parts like Kerbin to LKO. You can accomplish this for several hundred m/s less.

This is a really good guide for designing rockets / missions though. If you plan to have the DVs listed your missions should work barring some major player induced inefficiencies. 

There are two times I increase those numbers:

  1. Propulsive landings - these are tough to get right and getting them wrong has terminal consequences
  2. Burns over 4-5 minutes - the longer a burn the less ideal it is and the more DV loss you encounter
Edited by Tyko
Link to comment
Share on other sites

  • 0

They do seem to be minimums or close to it. For example, going from Low Kerbin Orbit to the circular orbit around Jool adds to 4900 m/s using the chart. Looking at Alex Moon's tool, the optimum launch over a period of 10 years is 4887 m/s. For planning I've been adding about a 25% safety margin to these numbers to account for my less than optimum flying ability.

Link to comment
Share on other sites

This thread is quite old. Please consider starting a new thread rather than reviving this one.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...