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Evel Kerbievel's Minmus Rover Jump-Off Challenge--NOW WITH "UNLIMITED" CLASS!

Mister Dilsby
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Tarantulae

Tarantulae

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I think the input comes from the SAS wheels & clamp attraction. The 2 halves are shaped so they can't dock, and with SAS you pull the clamps farther apart. The clamp pulls the back half closer, which bumps into the front half accelerating it. So SAS pushes the front half away, the clamp pulls the back half closer, and when it bumps into the front it speeds up. Total violation of conservation of energy for sure. I'm wondering if i can keep them connected if I could reach orbit via slow acceleration. Or, maybe an electric glider on kerbin? Powered by clamps! Time to experiment.

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Mister Dilsby

Mister Dilsby

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Bwahahaaa! OK I sincerely hope you all like this video. I spent all ?!!@ing day getting the software, ?!!@ing up the software, ?!!@ing up the jump, signing up for google+ and youtube, etc. etc... BUT-- I DID IT!

Edited by Mister Dilsby
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  • 1 month later...
petronator

petronator

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I got to escape velocity pretty easily using the "unlimited" rules. My strategy was "moar".

I got Minmus escape at 306 m/s. These pictures should make it pretty obvious how I did it.

The launcher:

z8Gg4sT.jpg

Immediately after launch:

eFLym2S.jpg

Technically 6 projectiles were shot off, but only one missed the cliffs and actually escaped Minmus.

u0W4hnG.jpg

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juzeris

juzeris

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After some research with.... results of limited excitement, the Construction Committee of Abstract Aerodynamics and Astrology concluded that the arm length plays a pivotal role in determining the linear speed of the outer boundary of a rotating frame. Considering the footage below, a vertical centrifuge did not provide sufficient ground clearance for a construction of extended reach. Therefore a horizontal centrifuge was determined to be required, a results arrived somewhat independently of the previous entry by one Mr. Petronator.

EXPLOSION SOUND WARNING! (The video below is just testing video for fun, not the final entry)

Thus presenting the Sassy 34 type centrifuge, which is believed to be capable of returning Kerbals to Kerbin from Minmus, as during testing launch velocities consistently (once) exceeded 420 m/s. However given the inaccurate trajectories during the calibration, the final entry clocks in at a slightly lower 398 m/s launch speed and needed some improvisation from Mr. J. Kerman to achieve a safe landing.

(This is the entry video (with significantly less sounds))

EDIT: While watching the video I realised I have Kerbal Joint Reinforcement in. I'm not sure how much of an effect it had, if anybody tests it without KJR, please report the results for !!SCIENCE!!

If that disqualifies the entry, so be it. :)

Edited by juzeris
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Mister Dilsby

Mister Dilsby

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If that disqualifies the entry, so be it. :)

Epic! The push from Jeb of course cannot be allowed to add to your score, which would be counted as a Minmus escape at 398 m/s. Unfortunately I do have to DQ this entry for KJR, which could give an advantage in allowing you to construct ridiculous big arms that do not fall apart. However, +rep for disclosing this yourself as no one would have detected it from the video. I hope you can do it again without KJR, and maybe get Jeb all the way home without an EVA push--I think in a lander can you might just have enough velocity to manage it!

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juzeris

juzeris

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The push from Jeb of course cannot be allowed to add to your score, which would be counted as a Minmus escape at 398 m/s.

Well, the push happened after Minmus SOI escape, so I hoped it wouldn't matter, it was just for flavor. :)

Unfortunately I do have to DQ this entry for KJR, which could give an advantage in allowing you to construct ridiculous big arms that do not fall apart.
Well, I did some testing, and apparently it can achieve even higher speeds without KJR. Video proof attached of a release at 507 m/s. However I cannot manage to hit Kerbin reentry that well anymore, maybe I'll give it a try tomorrow. I'm always releasing at a bit of an angle and thus gain too much velocity perpendicular to the orbit plane to reach atmosphere. For the record I did not add a single strut for this, the only change is I emptied the monoprop from the capsules.

It can handle tension just fine, it's shear that destroys it, and if I spin it up slowly it holds up quite well. Just hyperedit it away from Kerbin quickly, the gravity there is too much for those flimsy arms.

Also a bonus video of what happens if I try to spin it up too quickly and the shear forces unplug the arms (explosions warning), which, of course, gives me some ideas....

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