• 0
Actually_New_KSP_Player

Kerbal Engineer Redux's dV numbers are wrong?

Question

KSP 1.3

I want to transfer this station's core right to Jool, but i've noticed that even with little fuel left it has 2000 dV so i thought why not refuel it and move on instead of launching another booster. oKeMdWH.png

This core weighs around 50 tons, so i simulated it in VAB with Jumbo tank and X200-32 Fueltank (turned off fuel consumption from them) to see how much dV it would be. But why does it show me 2000 dV with full tanks? That's weird and i really don't want to test it "craft, save, launch, see if it works fine, if not load and repeat to step 1" way.

Z8lMP7l.png

Here's my full mod list though

vqbKyQv.png

Share this post


Link to post
Share on other sites

5 answers to this question

Recommended Posts

  • 0

Your "current" stage has 0 m/s dV. KER wants you to stage immediately:

kItHt2c.png

Whatever this decoupler icon is, it's not shown in your VAB screenshot, so that would be the first thing to make consistent:

Fk8nsjH.png

Share this post


Link to post
Share on other sites
  • 0
Posted (edited)

Because it's showing you DeltaV at Kerbin Sea level.

Hit the "Atmospheric" button and move the slider all the way to the right to see Vacuum Dv.

Vacuum Dv is typically always gonna be higher than Sea level.

Edited by Rocket In My Pocket

Share this post


Link to post
Share on other sites
  • 0
4 minutes ago, Rocket In My Pocket said:

Because it's showing you DeltaV at Kerbin Sea level.

Hit the "Atmospheric" button and move the slider all the way to the right to see Vacuum Dv.

It already shows the vacuum dV. Basically it is even less than 2000 dV due to a lesser efficiency at sea level.

eGYCKtm.pngd3SH0ko.png

Share this post


Link to post
Share on other sites
  • 0
Posted (edited)

Well, more fuel doesn't always equate to more Dv, but it's hard for me to say given I don't know how much Dv it originally had sitting on the pad.

Plus you've got tanks locked off which would change things. Plus, you're on an outdated version with mods. Plus it's a mock up, not the real thing.

Trouble shooting this wouldn't exactly be easy if it is a bug, lol. (A shot in the dark: Everything set up good crossfeed wise?)

If you're not opposed to a bit of "cheating" save your game, and use the debug menu (Alt+F12) to fill up all the fuel tanks on the real deal in space, see what numbers you get, then re-load your save.

Edited by Rocket In My Pocket

Share this post


Link to post
Share on other sites
  • 0
4 minutes ago, HebaruSan said:

Your "current" stage has 0 m/s dV. KER wants you to stage immediately:

kItHt2c.png

Whatever this decoupler icon is, it's not shown in your VAB screenshot, so that would be the first thing to make consistent:

Fk8nsjH.png

Thanks, it worked and shows 5000 dV. I'm too lazy to mess with docking ports so i planned "undocking" the station core through stack separator.

Share this post


Link to post
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.