[0.22-0.23.0] Delta-V Maximization Challenge

[tavert]

Welcome back lump. This challenge is scored on vacuum dV according to MechJeb on the launchpad, not remaining once in orbit (practically speaking the latter is probably more useful though). You posted two on-orbit pictures, did you mean for the first one to be on the pad?

[lump]

He he thanks, it's been a while, and yeah probably.

In other news my duna SSTO craft fell a tad short, turns out on the surface it still had a TWR of only 0.78 so i couldn't lift of without the inefficient engines, o now i got it stuck in orbit with 370 m/s fuel. should be an easy fix though, just change some things around.

Edit: ok i can get an improved one to orbit with 3700m/s delta-V, godam heavy parachutes.

Edit Edit: ok got one with 4000m/s orbiting now, should be enough hopefully.

Edited December 17, 2013 by lump

[mhoram]

Wow, while I was away, there were incredible new designs. Respect to all participants!

With the release of 0.23 I will have a look at the new behaviour of parts and physics and see if it makes sense to keep this challenge alive.

@TUFOM

@TUFOM

Sorry, but your submissions lack a screenshot of the ship in orbit to prove that it is stable enough.

@obi_juan

Great stats of this entry! As the battery on stage 0 is a hinderence and no advantage, I will accept this submission.

@dcethe

Nice ship! Could you please provide the information, how much mass ths ship consists of?

@obi_juan

Even better stats.

@tavert

I would like to see this design become reality

@TUFOM

Thanks for the submission. Looks good!

@totalitor

Very nice! Especially the large dV amount in the first stage.

@Nao

We have a new leader!!! Very amazing

@lump

Sorry, but your sumbmissions lack screenshots from the ship on the launchpad, so I can not verify the stats.

This challenge is scored on vacuum dV according to MechJeb on the launchpad, not remaining once in orbit (practically speaking the latter is probably more useful though)

You are right that the dV in orbit is probably a more useful stat, but my previous Payload-fraction challenge already used ascent optimization techniques for the best submissions and I wanted to make that factor less important in this challenge.

Edited December 19, 2013 by mhoram
fix typo

[lump]

He he no it's fine, i wasn't technically entering anyway, i just wanted to see if i could out SSTO tavert, i hope one day we will out SSTO each other into higher and higher delta-V values, driving development and all, on the pad it says something like 6000 anyway because i just use good old turning off engines over what tavert uses, which does it automatically.

Edit: ok can get a probe SSTO to orbit with 4500m/s now 5000 here i come.

Edited December 19, 2013 by lump

[chlue]

Hello,

I had build a low TWR craft. The delta-v is not that spectacular, but I still want to share some images:

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parts: 120 + 12 launchclamps(not necessary, but I wanted to see if it drops a bit)

vacuum delta-v on launchpad: 26745

vacuum delta-v in 100km orbit: 21150

min TWR: 0.14 in orbit, 1.02 on launchpad

Mechjeb gets the craft into a 100km orbit without issues. I only had to tune the ascend path a bit, because the TWR is too low for the default 40% turn shape value.

I guess another ring of engines in the first stage could bring this craft to more competitive levels - or it will break apart in flames.

[mhoram]

vacuum delta-v on launchpad: 26745

thanks for the submission. I like the not-so-sanity-rocket

Since 0.23 is not that much different from 0.22 I will keep this challenge up and running.

[dcethe]

2082.9 its in the included screenies I think.

[mhoram]

You are right, sorry that I missed it.

[Sensi]

Here is my entry :

698 parts (75% struts), 4666 tons, min TWR 0.02, 34522 m/s dV.

Once in 100+ km orbit, still has 1400+ m/s dV with a TWR > 2 on the 2nd ascent stage available for the burn to get out of LKO.

--> Craft file <--

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Fly safe.

Sensi.

Edited February 22, 2014 by Sensi

[mhoram]

34522 m/s dV.

Gratulations on making it to the top of the leaderboard!

Replacing the separator by the (originally required) TR-2V Decoupler would increase your Delta V because it is lighter.