Jump to content

[WIP][1.8.x] SSTULabs - Low Part Count Solutions (Orbiters, Landers, Lifters) - Dev Thread [11-18-18]


Shadowmage

Recommended Posts

1 hour ago, Shadowmage said:

Updated testing release is available:

https://github.com/shadowmage45/SSTULabs/releases/tag/0.3.27-pre3

Fixes petal adapter mass problems, adds texture swapping to the rest of the fairing enabled parts, adds updated SC-C-BPC, and adds an initial first-pass texture for J-2X engine.  Also includes the change to part positioning in the editor; no more chasing GUI's around.  Full changelog and downloads are behind the link.

 

Have submitted a PR to RCSBuildAid to add support for multiple RCS modules in the same part, and am working with Magico13 of StageRecovery to get support added for SSTU parachutes for recovery purposes (well, generic API for -any- mod to use).  Should hopefully see those updates within the next few weeks/releases of those mods.

Ahh, awesome on the petal adapter. I just started experimenting with the exposed variables for that. I wouldn't necessarily say that the mass is a problem (I haven't used it in stock, just that the default values don't scale well to RSS. Hopefully I can work out some balanced values for RO to use as well.

Link to comment
Share on other sites

So, I was fairly easily able to alter the default height, base radius and top radius of the petal fairing. Funny thing is that the actual fairing base doesn't seem to scale as I would expect with these. Perhaps I don't need to alter the default value from 5? I will poke around it a bit more. Of course, it isn't absolutely necessary that we change the default for RSS, I just figured I would give it a shot while I was mucking around with other variables, like the mass formula :)

Link to comment
Share on other sites

hey  i think there might be something wrong with the MFT values for tanks, they seem too have absurd ammounts of liquid fuel and oxidizer. see:

 

the bottom tank is a 3.75 meter fuel tank, and the top is a 2.5 meter sstu tank with a 1.875 meter tricoupler on the bottom, but the fuel storage is absurd. the sstu takes like, about 3 times the fuel storage of the 3.75 meter tank. im not sure if its a problem with sstu or on my end, but any help?

 

Link to comment
Share on other sites

28 minutes ago, 123nick said:

hey  i think there might be something wrong with the MFT values for tanks, they seem too have absurd ammounts of liquid fuel and oxidizer. see:

 

the bottom tank is a 3.75 meter fuel tank, and the top is a 2.5 meter sstu tank with a 1.875 meter tricoupler on the bottom, but the fuel storage is absurd. the sstu takes like, about 3 times the fuel storage of the 3.75 meter tank. im not sure if its a problem with sstu or on my end, but any help?

 

There is a "Utilization" percentage bar in that menu. Slide it down to get less fuel.

Link to comment
Share on other sites

Just now, ComatoseJedi said:

There is a "Utilization" percentage bar in that menu. Slide it down to get less fuel.

i know, but shouldnt it be impossible for a tank that small to contain more fuel, even with full utilization, than the 3.75 meter tank? thats bigger? seems sorta cheaty.

 

Link to comment
Share on other sites

1 minute ago, 123nick said:

i know, but shouldnt it be impossible for a tank that small to contain more fuel, even with full utilization, than the 3.75 meter tank? thats bigger? seems sorta cheaty.

 

If you can find enough rocket engines to get that much fuel off the ground, by all means, it's cheaty. I haven't run into any unusually large fuel payloads that wasn't scalable down to what I need using MFT. The only time I run into large quantities of fuel like that is if I had the cryogenic engine pack. Because that does generate an ungodly amount of fuel, but it's the only way to use the LH2 engines without going to RF. But, if you didn't have MFT installed, the tanks have their own fuel switch to LH2/LOX. Unfortunately there is no other way around this, since MFT and RF are split up and LH2 is one of those fuels that's caught in the middle. 

Link to comment
Share on other sites

1 minute ago, ComatoseJedi said:

If you can find enough rocket engines to get that much fuel off the ground, by all means, it's cheaty. I haven't run into any unusually large fuel payloads that wasn't scalable down to what I need using MFT. The only time I run into large quantities of fuel like that is if I had the cryogenic engine pack. Because that does generate an ungodly amount of fuel, but it's the only way to use the LH2 engines without going to RF. But, if you didn't have MFT installed, the tanks have their own fuel switch to LH2/LOX. Unfortunately there is no other way around this, since MFT and RF are split up and LH2 is one of those fuels that's caught in the middle. 

so its like, storing the ammount of LF as if it were storing LH2? it just seems buggy, because with other mods, like spaceY rocketry, you can have 7.5 meter parts that can easily send that into orbit, and if you do, then some LV-909s can get you insane ammounts of deltaV.

Link to comment
Share on other sites

4 hours ago, stratochief66 said:

So, I was fairly easily able to alter the default height, base radius and top radius of the petal fairing. Funny thing is that the actual fairing base doesn't seem to scale as I would expect with these. Perhaps I don't need to alter the default value from 5? I will poke around it a bit more. Of course, it isn't absolutely necessary that we change the default for RSS, I just figured I would give it a shot while I was mucking around with other variables, like the mass formula :)

the 'defaultModelDiameter' setting just tells the plugin what the model is at at its default scale in the .mu file, which should stay at 5 unless you are replacing the model

the settings you are looking for would be

'topRadius' will set the default starting top radius

'bottomRadius' will set the default starting bottom radius

'currentHeight' will set the default starting height

'currentStraightHeight' sets the default taper start height

Link to comment
Share on other sites

13 hours ago, 123nick said:

hey  i think there might be something wrong with the MFT values for tanks, they seem too have absurd ammounts of liquid fuel and oxidizer. see:

the bottom tank is a 3.75 meter fuel tank, and the top is a 2.5 meter sstu tank with a 1.875 meter tricoupler on the bottom, but the fuel storage is absurd. the sstu takes like, about 3 times the fuel storage of the 3.75 meter tank. im not sure if its a problem with sstu or on my end, but any help?

 

That does indeed look like something strange is going on.  I'll look into this for the next release.  It should have fairly comparable quantities, and performance, to a stock tank of the same size (and fuel).

Link to comment
Share on other sites

I just checked with a 3.75m tank straight MFT-B tank, it holds about half (35K) the LH2 as the NF CryoTanks does. LF/O is about the same ratio as stock tanks. With certain mount options it increases anywhere from 40K to 80K LH2, so in effect more than doubling. I think there are some calculations for the different mounts that influence tank volume a lot, specifically the 2-4way engine mount splits like in your example which can double the tank volume. But mind you that there is a lot of tank area added vs the plain straight cylinder. I can't read the values in your screenshots, so it is hard to see exactly how much your values deviate.

Link to comment
Share on other sites

Mage, is there a cluster layout for 8/9 engines, or does it stop at 7? I'm making clusters for the Merlin engine (need a 3 and 4-engine Direct mount to play with) and was wondering if there was a 8/9-engine cluster configured already (like the quadinline naming etc)? Found the names for 9x

[edit] Just trying to gauge if you are willing... You mentioned asking the guy from StageRecovery regarding drag numbers etc... Would you at all be interested in making a modular part that has everything needed for recovery? This would basically be an inline module cq nose-cone with drone core, parachutes, small battery and heatshield (just enough for 1st stage to make re-entry). Now I can hack the SAS and battery, and possibly even a heatshield into the cfg, but the chutes are the main issue I think. Would this at all be something worth looking into for integrating into the upcoming modular boosters or making as a stand-alone part to be added to the main core? [puppy dog eyes] :P

Edited by Jimbodiah
Link to comment
Share on other sites

1 hour ago, Jimbodiah said:

I just checked with a 3.75m tank straight MFT-B tank, it holds about half (35K) the LH2 as the NF CryoTanks does. LF/O is about the same ratio as stock tanks. With certain mount options it increases anywhere from 40K to 80K LH2, so in effect more than doubling. I think there are some calculations for the different mounts that influence tank volume a lot, specifically the 2-4way engine mount splits like in your example which can double the tank volume. But mind you that there is a lot of tank area added vs the plain straight cylinder. I can't read the values in your screenshots, so it is hard to see exactly how much your values deviate.

the SSTU tank is a 2.75 meter tank with 1.875 meter tricoupler mount. the bottom tank is the stock tank. the SSTU tank had lik,e 9500 or so LF , and 11K oxidizer (estimates). hope that helps.

 

Link to comment
Share on other sites

Hmmm, my 3.75 only showed 3K of each LF/Ox, and that went to just over 6500 with the quad mount.

Mage suggested to me once, when I had some strange stuff happening, to remove the PartDatabase.cfg and restart the game. What you have sounds like something weird, even with the mount types giving a bit too much fuel here and there.

Link to comment
Share on other sites

1 hour ago, Jimbodiah said:

Mage, is there a cluster layout for 8/9 engines, or does it stop at 7? I'm making clusters for the Merlin engine (neede 3/4 Direct versions) and was wondering if there were 8/9 clusters prepped?

9 - yep, I remember seeing the circular 9 and a square 9 in there

8 - I don't think mage included (I could be very wrong though), but you have two options, get the one included on RO, or get the circular nine in the engine layout file from SSTU and remove the center engine (x=0 y=0) and change it's name

either way you have to muck the engine layout file :P

Edited by JoseEduardo
Link to comment
Share on other sites

I'll check the files for the 9 version, as that is the one I am looking for (Falcon).

btw: The now universal shroud looks cool mage, gives a modern look to the rockets! Thanks for adding it to the line up!!!!!! The shroud and the Direct are my favorite mounts :)

Link to comment
Share on other sites

1 hour ago, Jimbodiah said:

Hmmm, my 3.75 only showed 3K of each LF/Ox, and that went to just over 6500 with the quad mount.

Mage suggested to me once, when I had some strange stuff happening, to remove the PartDatabase.cfg and restart the game. What you have sounds like something weird, even with the mount types giving a bit too much fuel here and there.

theres also a "utilization" bar option when i press it, turning it apprently increases the max volume. does that effect the thing in any significant way?

Link to comment
Share on other sites

4 minutes ago, Jimbodiah said:

Is that from the Modular Fuel Tanks mod? (not to be confused with the SSTU Modular Fuel Tank part)  It does not show on any of my tanks.

i....think so? its from something, ive noticed it on wing parts, too, and those also seem too store unusually high ammounts of fuel, so i dont store fuel in wings. its from something.

Link to comment
Share on other sites

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...