EVE problems urgh

[oglommi]

Been tinkering on my EVE lander/return ship. My problem is everything seems to fly like dart arrows straigth back to ground in EVEs atmosphere.

Stuff that flies fine on kerbin just behaves like dart arrows plowing back the ground. Anyone knows if this is a bug or is just Eves atmosphere just that horrible.

This is my second prototype. The bottom dish is heatshield and fuel that I pump up to higher tanks after the parachutes are deployed. The spider legs are discarded after take off. COM and placement of engines seems to have no effect how it behaves after take off on EVE.

Any help?

[Randazzo]

Eve has both higher gravity and a denser atmosphere than Kerbin does. A 1.7 TWR on kerbin is 1 on Eve, and therefore not enough to take off. Further compounding the problem is the 5 atmospheres of pressure reducing or completely eliminating thrust from your engines.

TLDR; Something that works on Kerbin won't necessarily work on Eve.

Clever heatshield design, btw.

[xtoro]

1-Place long girder above your capsule

2-Place airbrakes at the top of the girder, as many as you can fit.

3-Land on your feet like a boss.

[brianorca]

4- remember to jettison the girder before lifting off from Eve.

[oglommi]

1-Place long girder above your capsule

2-Place airbrakes at the top of the girder, as many as you can fit.

3-Land on your feet like a boss.

Landing is easy.

- - - Updated - - -

Eve has both higher gravity and a denser atmosphere than Kerbin does. A 1.7 TWR on kerbin is 1 on Eve, and therefore not enough to take off. Further compounding the problem is the 5 atmospheres of pressure reducing or completely eliminating thrust from your engines.

TLDR; Something that works on Kerbin won't necessarily work on Eve.

Clever heatshield design, btw.

Yeah I know, the original idea was to have the turbines on top of the ship and try to just floatish up high in the atmosphere before activating the rocket engines(the very low COM making it act as a baloon with some ballast), but it just plows back to EVE. The high atmosphere density is a killer for rocket engines, but wings and propellars and such should be more efficient as they would be under water.

Im gonna try pivoting the engines and hence making the craft spin stabilized.

Edited August 28, 2015 by oglommi

[selfish_meme]

On Eve your ascent needs to be alow and vertical for a good 10km, I can see the top of your ship is too draggy and needs to be more awrodynamic. It's super atmosphere, anything that goes on Kerbin is doubly so on Eve. So very pointy on top like shock cone, less than 200ms for the first 10 km, less than 700ms for the next 20km but you can negin your slow gravity turn.

[Foxster]

Sorry but there are just waaaay too many mod parts there to try to figure out what is going on.

[Laie]

Sorry but there are just waaaay too many mod parts there to try to figure out what is going on.

Yup. Are these turboprops/impellers?

Anyhoo, I presume you can take off, otherwise you couldn't dart. The non-Kerbin atmosphere's are a mess, though: 10km on Eve will approximate sea level on Kerbin, but 75km on Eve is thicker than 30km on Kerbin. I find that proper gravity turns are quite problematic in terms of fuel consuption and aerodynamic heating, and advise to go up more steeply, even if that means that you need to do a large circularisation burn later.

[oglommi]

Yup. Are these turboprops/impellers?

Anyhoo, I presume you can take off, otherwise you couldn't dart. The non-Kerbin atmosphere's are a mess, though: 10km on Eve will approximate sea level on Kerbin, but 75km on Eve is thicker than 30km on Kerbin. I find that proper gravity turns are quite problematic in terms of fuel consuption and aerodynamic heating, and advise to go up more steeply, even if that means that you need to do a large circularisation burn later.

Those are electric turbines from a Roverdud mod. I want to go straight up but by 3000 meters the atmos har forced me horizontal. Tried moving the turbines to the top and make it spin stabilized, Worked wonderfully on Kerbin, but the kraken ate the ship after hyperediting it to EVE orbit.

[idPhobos]

Hyperedit Kerbin to have Eve's stats rather than editing your vessel to Eve. It's not completely accurate but iteration rate is far faster. When you have a vessel that works in that scenario with about 15% dV remaining in orbit then test on Eve for real.

Edited August 28, 2015 by idPhobos

[oglommi]

Hyperedit Kerbin to have Eve's stats rather than editing your vessel to Eve. It's not completely accurate but iteration rate is far faster. When you have a vessel that works in that scenario with about 15% dV remaining in orbit then test on Eve for real.

Thanks everybody, but I got it working with spin stabilization and Mechjebs Smart A.S.S pointing ut upwards.

- - - Updated - - -

http://imgur.com/a/unoJf#0

Edited August 28, 2015 by oglommi

[RyanRising]

my [highlight=#FFFF00]EVE[/highlight] lander/return ship.

fly like dart arrows straight back to ground in [highlight=#FFFF00]EVE[/highlight]s atmosphere

take off on [highlight=#FFFF00]EVE[/highlight].

Any help?

I'm sorry, I don't know much about Eve vehicles, but I do have to ask- Why is Eve capitalized as "EVE"? Is that intentional?

It makes me think of Environmental Visual Enhancements more than anything.

[oglommi]

I'm sorry, I don't know much about Eve vehicles, but I do have to ask- Why is Eve capitalized as "EVE"? Is that intentional?

It makes me think of Environmental Visual Enhancements more than anything.

Prolly not, im tired.

[Vanamonde]

This has turned into a how-to thread, and so it has been moved to the how-to subforum.

[Skorpychan]

Anyone know if this is a bug, or is just Eve's atmosphere just that horrible?

Eve has high gravity and a thick atmosphere. It really is that horrible. Eve ascent is one of the biggest challenges in the game, so don't feel bad about finding it difficult.

[oglommi]

Eve has high gravity and a thick atmosphere. It really is that horrible. Eve ascent is one of the biggest challenges in the game, so don't feel bad about finding it difficult.

MY idea works. Problems is the spin stabilization makes Smart A.S.S piloting the craft is absolutely necessary. Done several ascents now and my best attempt got to orbit was with 500 Dv left, and thats after dumping 30 tons of fuel from the lower stage so the turbines can bring it up to 30+Km at 200KMh.

[GoSlash27]

ogolommi,

I can't tell what's going on from the pic (too many mods), but perhaps the problem is your rocket is *too* stable to work on Eve. If you have too many tailfins with too much area and they're too far back, it'll lawn- dart on Kerbin.

Something that works fine on Kerbin would be expected to be too stable for Eve.

Good luck!

-Slashy

[oglommi]

ogolommi,

I can't tell what's going on from the pic (too many mods), but perhaps the problem is your rocket is *too* stable to work on Eve. If you have too many tailfins with too much area and they're too far back, it'll lawn- dart on Kerbin.

Something that works fine on Kerbin would be expected to be too stable for Eve.

Good luck!

-Slashy

Pictures are poor and out of order. Imgur startet some drama and would not let me rearrange them yesterday. Anyway I figured out the problem. Spin stabilization and Smart A.S.S manages to keep it upright.