Jump to content

Fuel Tank Mass Ratio - Something seems off


CorBlimey

Recommended Posts

It was 272kg on a dry mass of 26-35t (depending on the tank version), that's about a 1% change. So on a 10t wet tank, with 1t of dry mass - painted version would be 1:10 ratio, unpainted would be 1:10.1 ratio.

I'd still like to see a slight improvement of +0.2 to +0.5 to the dry:wet mass ratio for unpainted.

That 26-35t is dry mass. So for a 10t wet tank it would be 1t dry unpainted or 1.01t painted. I don't think this is significant enough to be worth bothering to model.

Link to comment
Share on other sites

This is one of those things where it would be nice if you could upgrade tanks through further research. For instance, a 10t wet tank might have 0.5t unavoidable dry-mass and 1.0t dry mass that can be reduced through further research. So initially, you have a dry:wet mass ratio of 6.67. Research the part again and you cut that 1.0 in half to get a 1:10 ratio tank. Research it again and you have a 0.75t:10t ratio (13.33).

I'd definitely like to see upgrades in the tech tree.. There's a thread going on in the suggestions and development forum about that right now in fact..

0.625m parts end up with a 1:8 dry:wet ratio, 1.25m parts end up with a 1:9 ratio, 2.5m parts end up with a 1:10 ratio, and 3.75m parts have a 1:11 ratio.

That would be fine by me. Right now, they're all over the place without rhyme or reason... :/

Unpainted parts should definitely have better dry:wet ratios, but not drastically better. So a painted 2.5m tank would have 1:10, but the unpainted version might be 1:11 or 1:12 ratio.

As was pointed out, we should probably ignore the unpainted business. Besides, kerbal science could easily produce massless paint. ;)

Link to comment
Share on other sites

in my head i like to think the oscar b tank is made of like, a cross section of a pipe or somethin cheap, so itll be nicely tiny but fairly heavy. basically a tiny tank for use with retrorockets or short range sattelite deployment

Link to comment
Share on other sites

in my head i like to think the oscar b tank is made of like, a cross section of a pipe or somethin cheap, so itll be nicely tiny but fairly heavy. basically a tiny tank for use with retrorockets or short range sattelite deployment

It's actually quite good when paired with an LV-1 for an ultra-light final stage. Dry mass matters ;)

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
Reply to this topic...

×   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.

×
×
  • Create New...