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Thread: The K Prize - 100% reusable spaceplane to orbit and back

  1. #1

    The K Prize - 100% reusable spaceplane to orbit and back

    The K-Prize Party Thread.


    K-Prize badge by WafflesToo (sig badges).


    The K Prize challenge is to make the obvious craft, a spaceplane, and make it work. All those who succeed will be included on the roll of honour and get a free back stage pass to hang with Kay Kool and the Kerbettes after their next live performance at the Dog and Booster (where free beer will be available).

    Rules
    1. The craft may not lose any parts in flight, no decoupling allowed.
    2. The craft must lift off horizontally, reach orbit (PE > 70,000m) and land intact ready for 'refuelling'.
    3. All fuel tanks, wings (ie lift generators & aerodynamic environments) and engine parts must be stock, for fairness.

    Provisos to rule 1.
    A. Payloads may decouple from the craft providing all payload tanks are as full on decoupling as at launch and any thrust (or lift) generators on the payload were not used prior to decoupling.
    B. Docking is permitted providing no fuel is transferred (net per fuel type) into the K-Prize craft (it can be transferred out). Crew transfers are permitted.
    C. Mining and refining are permitted providing none of the resulting fuel product is used to drive the craft i.e. mined fuel is treated as payload only.

    Kudos
    1. Smallest ship (by weight, weight info required). Minimalist record.
    2. Largest ship (by weight, weight info required). Maximalist record.
    3. Highest orbit beyond Eeloo. Altitudinalist record.
    4. Landing on KSC terrain. Pilot proficiency medal.
    5. Landing on any KSC runway or docking in orbit. Advanced pilot precision award (1stClass for both).
    6. Visiting other SOIs. Kosmokerbal Commendation.
    7. Planetoid landings. Astrokerbal Distinction.
    8. Payload to orbit and mined product to Kerbin or fuel store from asteroid. Utilitarial Commendation.
    9. Payload to distant planet surface and mined product to Kerbin or fuel store from planet. Utilitarial Distinction.

    Prefixes: Exploratory applies to planetoid missions and Expeditionary applies to planetary lander missions outside Kerbin's sphere of influence. (Planets are defined as the central body in their own SOI within Kerbols SOI or gravity exceeding 0.75 of Kerbins.)


    Guest List
    (Roll of Honour.)


    Version 1.0
    Rune with White Dart 1.0 Prototype.
    panzer1b with Tri-Fighter V Prototype.
    Overfloater Advanced Pilot Precision Award with space plane.
    Jakinbandw Advanced Pilot Precision Award with Speed Demon.
    YellowApple with Hummingbird Mk.1 - KSP 1.0.0 edition.
    plotz Advanced Pilot Precision Award with Kerthrop RDP-29.
    Merandix Utilitarial Commendation (10.7t), Advanced Pilot Precision Award 1st Class with Sleipnir.
    Sean Mirrsen Utilitarial Commendation, Advanced Pilot Precision Award with Stratoghoul Mk2.
    sdj64 Astrokerbal Distinction (Minmus), Advanced Pilot Precision Award with Zanzibar.
    Kuzzter Advanced Pilot Precision Award with Nooxie 4A.
    Slugy Utilitarial Commendation, Advanced Pilot Precision Award with Rapier cargo.
    SuperHappySquid Utilitarial Commendation with SSTO Tiny Cargo.
    Cybersol Utilitarial Commendation (40t), Advanced Pilot Precision Award 1st Class with Hammer Orange SSTO (178.958t).
    kahlzun Advanced Pilot Precision Award with Space QM.
    Kagame with XB-70 Valkyrie SSTO.
    Tarmenius Utilitarial Commendation, Advanced Pilot Precision Award 1st Class with Jatayu.
    percyPrune Utilitarial Commendation, Advanced Pilot Precision Award with Hotdog4.
    Randazzo Advanced Pilot Precision Award 1st Class with Kestrel II.
    redsh Advanced Pilot Precision Award with mini buzzer orbital.
    Stochasty Advanced Pilot Precision Award with Upn Atom VI.
    - Astrokerbal Distinction (Minmus), Advanced Pilot Precision Award with Upn Atom VI.
    - Astrokerbal Distinction (Mün), Advanced Pilot Precision Award with Upn Atom VI.
    - Astrokerbal Distinction (Duna), Advanced Pilot Precision Award with Upn Atom VI.
    ILikeIke with Tsiolkovsky.
    Terh Utilitarial Commendation, Advanced Pilot Precision Award with SSTO Haron Mk2.
    LittleBlueGaming Advanced Pilot Precision Award with Pugio Mk 1.
    sj176 Advanced Pilot Precision Award with K-Prize SSTO.
    Starhawk Utilitarial Commendation, Advanced Pilot Precision Award with Space Goose.
    bb-pio with SR-71 Blackbird SSTO spaceplane.
    psyberduckling Advanced Pilot Precision Award with Asp Mk1 (minimalist record holder 4.4t).
    netbumbler Advanced Pilot Precision Award with Munney Shot.
    spikes2020 Utilitarial Commendation (>36t), Advanced Pilot Precision Award with SSTO-5 (maximalist record holder 253.5t).
    rudi1291 Advanced Pilot Precision Award 1st Class with Tourist Bus.
    juzeris Expeditionary Astrokerbal Distinction (Laythe), Advanced Pilot Precision Award with Krau 6.
    g00bd0g Utilitarial Commendation (51t), Advanced Pilot Precision Award with MK3 SSTO Cargo 1 Bay.
    Evanitis Advanced Pilot Precision Award with Explosion Free.
    Triop with Smallest SSTO.
    - with MIG 15.
    Batz_10K Advanced Pilot Precision Award with V-Machine.
    L3v1athan Utilitarial Commendation, Advanced Pilot Precision Award with SpaceplaneShort.
    selfish_meme Utilitarial Commendation (36.5t), Advanced Pilot Precision Award with SMA OrbitMaster.
    Fenya Advanced Pilot Precision Award with Finch.
    ILikeRovers Advanced Pilot Precision Award with Small Liquid SSTO.
    t3hJimmer Utilitarial Commendation, Advanced Pilot Precision Award with Stearwing XL.
    Nefrums Expeditionary Astrokerbal Distinction (Laythe, Bop, Pol), Advanced Pilot Precision Award with SSTL.


    [Spoiler: Guest List for K-Prize Party version 0.90]


    Guest Lists from previous versions.



    Gate Crashers
    (Dodged the bouncers.)


    K-Prize Gatecrasher's badge by WafflesToo (sig badges).


    Hooligan Labs, acquitted on all charges...
    Maxed Rockets, didnt want to come back anyway.
    evilC, denied accusations of short measures saying "I found it like that."
    Climberfx parts did not conform with KU common market standards policy.
    pinolallo, confessed to using experimental technology. Quoted in Kerbin Gazette, "gate crashing is kind of a hobby for me, my FatBob modified lifter for example." Presented "Theory of STOL Craft Design" to the press, available at all good book stores. Publicised secret crew shuttle test flight.
    cpt_nosh accidental fuel pump activation was accident.
    Kappa73, on returning from Laythe told reporters that mid-flight ship disintegration is perfectly normal, nothing to worry about. Complained about Kerman Bros plumbing.
    Psycho529 prefers the Mun to Kerbin anyway.
    Lazer Cut landed on the wrong planet, claimed it was deliberate.
    Rosarium blamed saboteurs.
    PotatoOverdose made no secret of refuelling on Laythe... many times over.
    japa what goes up doesnt always come down.
    Cupcake opined that gentlemen prefer VTOL, supplied some most funkadelic demonstration videos.
    Auriga exploring the universe in a Spaceballs Camper Van (video).
    ihtoit inadvertantly supercharged nuclear engine, landing strip no longer needs lights. (video)
    - claimed "the force made me do it!" (Xwing video) (TIE fighter).
    Technical Ben told all who would listen "Kraken is more than a mere rocket!" supplied promotional video at no extra charge!
    VincentS having some technical difficulties with the "not crashing" bit. Claimed losing a fuel tank on Duna was no accident.
    WafflesToo blatantly attempted to distract the K-Prize judges with a one act play (and video).
    Spartwo admitted creative interpretation of altimeter readings. Made persistent attempts to distract the bouncers.
    Cinocal likes to swing baby yeah (wings that is) !
    - felt that altering Kerbin's atmosphere was a price worth paying.
    zekes insisted that shuttles are spaceships too.
    Rhomphaia took the view that any landing Jebediah could walk away from was a good landing.
    El wonso quoted in Kerbin Gazette "In fact you can change the laws of physics."
    British_Rover said distributed landing technique was experimental.
    RTK admitted enjoying rulebreaking.
    Dr.Moo provided easy listening video evidence at the hearing.
    Taki117 took the view that using uncertified parts was fun.
    SeventhArchitect felt modifying certified parts was perfectly safe, not bodged at all.
    At the inquest it emerged that RocketScientistV's pilot kicked the solar panel "because it looked fragile", which it was.
    Sputnik's Revenge blatantly declined to add wings.
    TechniCali felt uncertified air intakes looked much cooler and represented no risk to anyone not on board the craft at lift off.
    Damaske confessed to using illegal refuelling technology.
    WafflesToo attempted to convince the panel that unidentifiable explosions are a good sign.
    Gravaar was on record saying that one day all space planes will be made this way.
    Fengist refused to confirm or deny whether allegations of prevarication were misinformation.
    Kokanee quoted in the Kerbin Gazette "I have seen the future and it looks like Firemoth".
    numerobis reflected that VTOLs dont need to crash the gates, they can just hop over them.
    GoSlash27 was adamant that that having cake and eating it was entirely possible according to quantum physics.
    Rakaydos suggested the Kerbal cosmos was a 3 dimensional brane moving in a higher dimensional space and there is no cake.
    RocketPilot573 told the commission "it was always intended to be an open ended mission".
    DMSP apologised for a lack of parachutes but felt that the craft had made a special contribution to Kerbin's reef ecology.
    SkyRex94 philosophised that were the universe a simulation one could adjust the cosmological constant to increase the availablility of sprinkles.
    Captain Vlad advised the committee that the exploding bits weren't really part of the spaceship at all... any more...
    Starwhip objected that colliding with the launchpad was unavoidable given the trajectory of the craft.
    Camaron asserted that the borrowed fuel was nether here nor there after the engines blew up, more kind of everywhere.
    ExplorerKlatt, found the missing wing tip while looking for lost golf balls.
    fenya interviewed by Breakfast TV was upbeat saying the craft came tantalisingly close to not crashing on several occasions.
    Sumguy told judges the detachable wing tip came at no extra charge, offered favourable credit arrangement.
    Ar180shooter crashing was due to technical issue with failing to not hit the ground.
    Gravaar declared the mission partly successful, since some parts had landed successfully
    SeanMirrsen admitted that solar power explosions were rare but not unheard of, unlike nuclear engines. Protested Stupeflyer Mk2 was ahead of its time.
    Edax conceded that the payload engine may have been tested at an opportune moment.
    Tynrael on reviewing the video evidence agreed launching downwards was not standard procedure for space vehicles.
    SuicidalInsanity denied using alien technology to construct a craft somewhat larger than your average spaceplane.

    ... can you do better :p
    Last edited by boolybooly; 16th July 2015 at 12:02.

  2. #2

    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Craft files would be nice by the end of this challenge. Making space planes is hard! making SSTO space plane is extra hard.
    Can\'t wait to see what people come up with...

    One question. Vertical launches are perfectly ok right?

  3. #3
    Fighting your fires. sal_vager's Avatar
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    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Woot! I have an SSTO spaceplane in orbit at 230km, I\'ll land at the KSC and upload the pics, watch this post!

    Update: Aircraft failed to return to Kerbin, the weight distribution was such that the engine flew through the airframe and the craft disintegrated, I have another more stable plane but I need to get out in this sun, it\'s been cold for so long here.

  4. #4

    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Edit : adapting the post to carry honour rolls from the previous versions.


    [Spoiler: Guest List for K-Prize Party version 0.25]

    [Spoiler: Guest List for K-Prize Party version 0.24]

    [Spoiler: Guest List for K-Prize Party version 0.23]

    [Spoiler: Guest List for K-Prize Party version 0.22]

    [Spoiler: Guest List for K-Prize Party version 0.21]

    Link to guest lists for versions 0.16 - 0.20.

    Gate Crashers (early days)
    (Dodged the bouncers.)

    Stevenator1, borrowed someone else's spaceship...
    sss, the public inquiry blamed a computer malfunction...
    keptin, wings fell off...
    dogon11, denies ever using black market engines...
    Baneblade, engines dropped off at an inconvenient moment...
    Phoenix Aerospace, confessed to using counterfeit rockets...
    Shazi, advertising situations vacant in 'KSP Piloting News' jobs section...
    Suzaku, still refusing to pay airport tax...
    a7i20ci7y, insists that using uncertified boosters is perfectly safe...

    Previous post content...

    I'm a watchin' sal_vager, I'm a watchin'.

    Quote Originally Posted by hebdomad View Post


    Craft files would be nice by the end of this challenge. Making space planes is hard! making SSTO space plane is extra hard.
    Can't wait to see what people come up with...

    One question. Vertical launches are perfectly ok right?
    I welcome your enthusiasm hebdomad. Did you see rule #2?

    Rule #2, the launch has to be horizontal by which I mean has to happen on the runway and begin with horizontal movement, after which you can fly it any way you want. 8)
    Last edited by boolybooly; 5th May 2015 at 04:20.

  5. #5

    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Damn... well there goes my one and only SSTO that might have parts 'accidently' fall off...

  6. #6

    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Made this over the weekend,

    The Wespe:

    [spoiler]
    [/spoiler]

    Gets to at least 70km, all one piece, 2 stages, enough RCS fuel for orbital maneuvering, and enough jet fuel to do a controlled landing. All 0.15 vanilla parts.
    Attached Files Attached Files

  7. #7
    StabStabStabbityStabStab! UmbralRaptor's Avatar
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    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Looks like my glorified rocket approach is... iffy.
    [spoiler][/spoiler]
    [spoiler][/spoiler]
    [spoiler][/spoiler]

    It needs the drop at the end of the runway to get airborne, is barely capable of a 70 km orbit, and has a L/D of ~2 with empty tanks and below ~2 km altitude. It cannot safely ditch on water. Land capability is currently unknown. =/
    Basics of orbital mechanics | Interplanetary transfers | Maltesh's orbital parameters | Maltesh's celestial parameters | To do: add analytic solutions here.

    Quote Originally Posted by ferram4 on NEAR
    The benevolent answer is that people constantly say "I want something better than stock, but easier than FAR" and so I gave them an extra data point. The malevolent answer is that I gave people exactly what they asked for, and it still has the same difficulty bump as FAR. The interesting answer is that it's a social experiment to see how people react to something that is harder, but that they think is easier.

  8. #8

    Re: The K Prize - 100% reusable spaceplane to orbit and back

    When the rocket fuel tanks finally get separated from jet fuel ones (0.16 i think), I\'m sure this challenge would be much more challenging. The Rocket fuel tanks simply carry so much more for their weight.

  9. #9
    Spacecraft Engineer
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    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Heh, looks like I need to step up my spaceplane game. The one spaceplane I\'ve gotten into orbit ran out of fuel doing so, partially due to mis-routed fuel lines, and ditched a pair of lower-atmosphere engines, an SRB, and the landing gear (attached to the engines and SRB) on the way up. (The pod decouples and lands via parachute. I\'m not that mean.)

    First, though, I need to build something that can rendezvous with my stranded spaceplane and nudge it back into the atmosphere.

  10. #10
    Spacecraft Engineer
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    Re: The K Prize - 100% reusable spaceplane to orbit and back

    Quote Originally Posted by Salda007 View Post
    Heh, looks like I need to step up my spaceplane game. The one spaceplane I\'ve gotten into orbit ran out of fuel doing so, partially due to mis-routed fuel lines, and ditched a pair of lower-atmosphere engines, an SRB, and the landing gear (attached to the engines and SRB) on the way up. (The pod decouples and lands via parachute. I\'m not that mean.)

    First, though, I need to build something that can rendezvous with my stranded spaceplane and nudge it back into the atmosphere.
    You have no idea how much I have tried to do that. Try and try, space is huge. I still haven\'t had a plane or ship that can do that.

    Quote Originally Posted by zombiphylax View Post
    Made this over the weekend,

    The Wespe:

    [spoiler]
    [/spoiler]

    Gets to at least 70km, all one piece, 2 stages, enough RCS fuel for orbital maneuvering, and enough jet fuel to do a controlled landing. All 0.15 vanilla parts.
    Tested your design out, I really like it Worked fantastically, got a stable 150km orbit, and brought it back down on the pad

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