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Micro-challenges for all! (Continuation of Newbie Central.)


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Sorry, I had to go somewhere, and when checked the forum to see if I had anything to do, and sure enough, @AeroGav reminded me that I had forgotten to close the challenge! When I saw that I wrote the above before I dashed out the door. Anyway,

 The Challenge is now closed!


Thank you to everyone who participated! Here is your medal, courtesy of @Lucast0909!

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Obney will post the next challenge when it is ready! (Hopefully soon.) (Also, @tagging isn't working again. WHY??? Oh well.)

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  On 10/2/2018 at 1:16 AM, kerbalstar said:

When did you finish it?

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About 15 minutes ago, the rover litho-braked to a stop on the little fuel port on the left in my first pic. I put the base down in the wee hours of this morning...
 

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I'm not really that upset. :P I do most of these challenges just for the fun of it. I'll be waiting to see about the next one, whether I get a badge or not!

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  On 10/2/2018 at 1:21 AM, Dark Lion said:

About 15 minutes ago, the rover litho-braked to a stop on the little fuel port on the left in my first pic. I put the base down in the wee hours of this morning...
 

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I'm not really that upset. :P I do most of these challenges just for the fun of it. I'll be waiting to see about the next one, whether I get a badge or not!

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Your base looks cool! 15 minutes ago... Awww...If you had completed the challenge before I closed it and just forgotten to post it, I would have given you an honorary medal... Oh well. Take a great job and some rep @Dark Lion!

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  On 10/2/2018 at 2:05 AM, Dark Lion said:

I'll  take it @kerbalstar

I wonder if @Alchemist 's sling could thump a kerbal into Minmus orbit :0.0:

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Here it is, @Dark Lion! Edit: Wow, did I misunderstand! Sorry. Take my poor paint skills anyway, great job @Dark Lion!

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Hope you like it!

I wonder... @Alchemist

Edited by kerbalstar
Wow, how did I misunderstand so much?
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  On 10/2/2018 at 2:05 AM, Dark Lion said:

I'll  take it @kerbalstar

I wonder if @Alchemist 's sling could thump a kerbal into Minmus orbit :0.0:

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  On 10/2/2018 at 2:16 AM, kerbalstar said:

I wonder... @Alchemist

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Maybe  from Gilly. The top speed is around 35 m/s (besides, you don't really launch to orbit by going vertically - if only to orbit around the parent body).

Well, the main elastic effect comes from bending the small docking ports and those aren't too strong at this, especially if you take the inertia of the structural elements in account. And even with something stronger (that is, deforming a more rigid structure), the force limit of KAS links isn't too great

P.S. Tried reattaching without docking ports and launch by bending the entire structure - got the same top speed, torn a cable out of the socket and lifted the base a few meters above the ground. Not a launcher material

 

P.P.S. On the other hand, in some sense anything can qualify as tossing a Kerbal into Minmus orbit, if the jetpack has enough to circularize

 

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  On 10/2/2018 at 7:40 PM, Alchemist said:

Maybe  from Gilly. The top speed is around 35 m/s (besides, you don't really launch to orbit by going vertically - if only to orbit around the parent body).

Well, the main elastic effect comes from bending the small docking ports and those aren't too strong at this, especially if you take the inertia of the structural elements in account. And even with something stronger (that is, deforming a more rigid structure), the force limit of KAS links isn't too great

P.S. Tried reattaching without docking ports and launch by bending the entire structure - got the same top speed, torn a cable out of the socket and lifted the base a few meters above the ground. Not a launcher material

 

P.P.S. On the other hand, in some sense anything can qualify as tossing a Kerbal into Minmus orbit, if the jetpack has enough to circularize

 

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I like it, I like it. You should try it...

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While waiting for the next one,  I  built a few liquid fuellers.      First up ,  I wanted to try to rocket approach and made this  incredibly dangerous thing for incinerating and smashing Kerbals, though it does sometimes go to space.   

lUNfEKL.jpg

  This is a two stage to orbit design,  but those Panthers cost less than most lower stages and it has nearly 3000 delta V.  The orbiter part of the vessel has 2 nervs and a rapier in air breathing mode .https://www.dropbox.com/s/2gk6lwksw603r6c/Lancer.craft?dl=0

Next, I decided to have a look at @adamgerd's only craft on KerbalX...   since he'd flown my SSTO, I wanted to try one of his.    It turns out, it's actually a supersonic transport.   But,  I reckoned it would be easy enough to make into one.

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My version here

https://www.dropbox.com/s/5kgqqmmvklymycs/vagabond ssto.craft?dl=0

Original here https://kerbalx.com/adamgerd/SAPAF-0132-MK1-Vagabond-Tested

MrqfnCX.png

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  On 10/2/2018 at 7:40 PM, Alchemist said:

Not a launcher material

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I'm sure a few alterations would be required to get a kerbal to orbit.

 

  On 10/2/2018 at 7:40 PM, Alchemist said:

you don't really launch to orbit by going vertically - if only to orbit around the parent body

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Of course not! But if you could manage to "draw" the kerbal horizontally, while positioned at the Greater Flats... it might just be possible!
But of course, there's this:

 

  On 10/2/2018 at 7:40 PM, Alchemist said:

the force limit of KAS links isn't too great

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So. Maybe Gilly! ;) 

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  On 10/2/2018 at 8:49 PM, AeroGav said:

Next, I decided to have a look at @adamgerd's only craft on KerbalX...   since he'd flown my SSTO, I wanted to try one of his.    It turns out, it's actually a supersonic transport.   But,  I reckoned it would be easy enough to make into one.

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Pretty suprised you got it to work, it was built for 1.0.5

Edited by adamgerd
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And now, the next challenge, which some of you have...  already done? :huh:

LF only SSTO!

mnlhYyQ.png

Make an SSTO which uses only LF, no oxidizer, and carries at least 4 passengers. You have one week, so get to it! Complete the challenge within a week to be awarded the unique mission patch!

EDIT: This challenge was suggested by @AeroGav!

 

EDIT2: Medals, for easy access!

iomsacm.jpg

sY00EyQ.jpg

Edited by obney kerman
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The Near Future suite has some atomic jet engines that can run on atmospheric air only. It also comes with an optional config that requires atomic engines to use uranium fuel for their reactor cores, as opposed to the magic infinite reactor core that the stock Nerv sort of glosses over. Would those be ok, or are they too overpowered?

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  On 10/3/2018 at 9:56 PM, sturmhauke said:

The Near Future suite has some atomic jet engines that can run on atmospheric air only. It also comes with an optional config that requires atomic engines to use uranium fuel for their reactor cores, as opposed to the magic infinite reactor core that the stock Nerv sort of glosses over. Would those be ok, or are they too overpowered?

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Er... @obney kerman, @AeroGav?

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  On 10/3/2018 at 9:56 PM, sturmhauke said:

The Near Future suite has some atomic jet engines that can run on atmospheric air only. It also comes with an optional config that requires atomic engines to use uranium fuel for their reactor cores, as opposed to the magic infinite reactor core that the stock Nerv sort of glosses over. Would those be ok, or are they too overpowered?

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I last played with this about a year ago.  It is much more realistic but though honestly the primary purpose of the challenge is to build stock lf sstos that anyone can use.  The requirements to do so are not science fiction

1) TWR about 0.3 to 0.6 to 1

2) About a third of gross weight in fuel

3) A stable, controllable airplane.  

That said I'd be interested to see the Atomic age plane all the same.

When I looked at the mod,  it did not contain a mixed mode nuclear turbojet.   So,  you needed a nuclear reactor to power the nuclear turbojet for atmospheric flight, and a separate one to power your NERV rockets, which seems just about as crazy as the stock solution of burning Jet A to heat the combustion chamber of a jet engine while 3 tons of plutonium sit idle nearby.  That said ,   those nuclear turbojets are fantastic for exploring Duna and Eve.   

For this challenge,  just getting to orbit ?  Not so much of a help.    The additional weight of the nuclear turbojet over a stock jet engine , means you're not really saving anything by avoiding fuel burn.

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I only just started using NF, but as I understand it Nertea has made a lot of changes to the Atomics and Aeronautics parts, and added some new ones. There are several multimode atomic engines; some are jet/rocket hybrids and others can switch between fuel + oxidizer for high thrust, or fuel only for high isp.

Anyway, maybe I'll make a stock Nerv SSTO and an Atomic SSTO. Why build one when you can build two?

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Hmm.   this isn't my finest creation..

https://www.dropbox.com/s/qyhybf8cvmj7qp5/Komet.craft?dl=0

hwC5XDJ.png

I went for something scratch built for the challenge,  but with 2 passenger cabins the Whiplash sits quite far back leaving me with a CG problem.   I don't want to shove Jeb any further forward in case he cooks,  so the NERVs have to go right up   front. The deep chord of the Big S wings gets in the way, so i had the bright idea of turning stakes sideways to make a very early jet era looking high aspect ratio, mildly swept wing.

Ended up adding too much fuel (26.5 ton wet mass) and it took 15 minutes to get to the point it was ready to start nukes, and at lower altitude it kept needing small course corrections, which was annoying.   I used fine rotate tool to add some built in nose up tendency so you don't have to hold back stick to keep it in a climbing angle,  but i overdid it this time which contributed to the sluggish flight (didn't get supersonic till 12km, whipslash not getting up on boost).    For the speedrun,  holding W down, but once we got over 1000 m/s it starts to climb anyway and lost power above 18km.   Once the nukes are lit  it does go like a champ though.


Here's something i built yesterday,  which i could enter instead since it carries 4 passengers.    Actually it has 225 seats, but it's all liquid fuel,  6 panthers, 6 rapiers (air breathing mode only) and 12 nervs.   It's actually a lot nicer to fly than the above craft,  the panthers give it a solid initial climb/acceleration and it's really stable at all speeds,  quite majestic.     Action group 1 is nose up trim, action 2 is neutral trim, action 3 is nose down trim,  action 4 is afterburner on/off,   action 6 is nukes  i think.

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QDCIXvD.png

https://www.dropbox.com/s/xmfebxxvbos8pt0/bigLL2.craft?dl=0

 

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