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winged

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Posts posted by winged

  1. 8 hours ago, Setu said:

    I'm new to Kerbal, just got first flight to the Mun. On the way back I got a nice trajectory towards the mother planet, but when I got in the SOI of the planet, my trajectory turned 90 degrees! I've tried to find out what happened, and I'm told this is because the three body physics is too hard to solve

    No, it didn't and it has nothing to do with n-body physics. You have just switched to a different frame of reference. Your velocity is now being displayed relative to Kerbin (previously it was being displayed relatively to the Mun).

  2. Is Orlando Airport still available for download somewhere? I've found a link but download was removed: https://www.dropbox.com/s/s4dm6tj75snxhf4/BaconAerospace.rar?dl=0

    gvyxTE6.jpg

     

    On 4/16/2019 at 9:03 PM, lk00david said:

    so... I'm not a frequent Kerbal Konstructs user (wish I was honestly) but I can't seem to switch the launch site to the shuttle runway. This may be something I've broken on my end but I have spent the last few hours trying to iron it out. Sorry if this is a dumb question but how do I make the shuttle landing facility a launch site?

    Because it is not set up as a runway. You have either spawn a marker on it and call it a runway or just spawn your aircraft on a stock runway and move it using Vessel Mover.

     

     

    On 4/23/2019 at 8:29 PM, Nightside said:

    Are you playing in RSS? I’ve had trouble with KK when JSC Switcher is also installed.

    I haven’t heard any reports of anyone successfully using this mod for a long time. I suspect that it was built for an out of date version of KK.

     

     

    I use it rather succesfully in 1.2.2 for last two years. Recently I've even added Baikonur from Kosmodrome mod.

     

     

     

  3. 1 minute ago, blowfish said:

    It probably is.  The RAPIER (and similar) are hacks of the turbojet module really, so I'm not really sure of a good way to fix this yet.  I've been looking at an alternate thermodynamic model for these engines but haven't generated anything I like yet. 

    Yes, but I just noticed that in newer AJE versions FHV was increased from 36 mln to 45 mln which is supposed to increase efficiency so I will apply that.

  4. @blowfish I would like to ask you about one thing. Isn't the specific impulse for RAPIER engine a bit too low at static conditions, just before takeoff? I am asking about 100% throttle with afterburner.

    AScLzMe.jpg

    For a comparison most of turbojets and turbofans have something like 2000-2500 ISP with full afterburner on. At higher altitudes and speeds it is ok, comparable with other engines but i feel like I am loosing waay too much fuel just for takeoff and climbing.  Another thing - specific energy for methane is a bit higher than for a regular jet fuel, shouldn't this be reflected in specific impulse?

     

     

     

    EDIT: just noticed that this was fixed on github 2 years ago :)  https://github.com/KSP-RO/AJE/commit/e60ce68dcb9c11f0d89d79a7b543f6e33c20f071#diff-7712b54154072776670435a729c7f4ea so I will just apply new settings to my installation.

  5. On 1/27/2019 at 11:47 PM, frisch said:

    What electrical propulsion is supported by RO?

    Near Future Propulsion is the only supported mod I've heard of.

    On 1/28/2019 at 5:16 PM, hypervelocity said:

    How is the rest of the RO/RSS community dealing with spaceplane launches? 

    1. Launching vertically and landing on the parachute (like I do with DynaSoar in RP-0)

    2. Using KSP 1.0.5 for horizontal takeoff and landing.

  6. On 1/6/2019 at 11:33 PM, Raptor22 said:

    I've found that you need to go to prograde in order to line yourself up, then switch to regular stability hold in order to keep that orientation. For some reason, if you have anything else but the regular hold it disables the rotation with the orbit.

      Reveal hidden contents

    screenshot301.png?width=717&height=449

    In this instance, a solar panel truss got loose when I was attempting to remove it from a shuttle's bay with the aptly named "Krakenarm" canadarm analog. The station began to spin and I was forced to let go of the panel less I destroy the station. While the station was brought under control, the truss started tumbling away. The truss was rotating on two axes, making it impossible to line up to dock without running circles around the truss. Without enough acceleration from the RCS jets to stationkeep and running low on fuel, Bill was forced to abort.

     

    Thank you. Everything works fine now. I've made 200 day spiral burn within just 20 minutes. 

  7. 5 hours ago, Munar pilot said:

    How do you guys make such small orbital capable launchers? My smallest is 57 tons and 27 meters tall, and 2m diameter at the first stage.

    1. Use as modern stuff as possible

    2. Make your probe as light as possible. For instance cubesats from AIES can be scaled down to about 0,25 kg.

    3. Use Procedural Avionics to create as light as possible guidance unit. Do not attach it to the last stage - use spin stabillisation instead.

    4. Use solid fuel. Procedural SRBs can be easily miniaturized so you can create very small upper stages.

    5. Use supersonic or hypersonic plane as a first stage. Staging at Mach 2.0 will save about 30-40% of LV weight, staging at Mach 6 - about 60%.

     

    Here is an example. 775 kg launcher (orange rocket) - 15 kg payload. Just about the size of a sounding rocket and with a 0,25 kg payload it could be 2-3x lighter.

    omrg8Xk.png

     

     

    But if you're limited by early tech... that's a full different story. I remember that my first orbital capable launcher was just a replica of Vanguard: 10t vehicle - 3 stages: X-405, AJ-10, solid upper stage.

    Spoiler

    pBKcJ6D.png

     

  8. @Starwaster

    https://github.com/KSP-RO/RealISRU/blob/master/GameData/RealISRU/Parts/HexAssembly/sabatier.cfg

    Currently Sabatier unit produces not only methane and water but also incredible amount of electrical power: 300 kilowatts. With that powerful device you don't need any nuclear reactors or solar panels for your fuel production facility because sabatier unit does all of that for you.

    Is sabatier reactor really supposed to generate any electricity? According to wikipedia it rather require energy to work:

    Quote

    "An optimized system of this design massing 50 kg "is projected to produce 1 kg/day of O2:CH4 propellant ... with a methane purity of 98+% while consuming 700 Watts of electrical power."

     

    EDIT: nevermind, I saw you already removed that electricity production in your github branch.

  9. 54 minutes ago, tater said:

    The primary point of NTP in any short (next X decades) timeframe is crew missions to Mars, not small space probes, not crew missions to LEO or even the Moon.

    I know what they're supposed for, I was only trying to list the applications for NTR assuming that they're available here and know without any additional problems related to them. It turned out that there aren't many applications because everything what can be done with current NASA budget is doable with chemical propulsion. Crewed Mars expeditions are probably beyond budget and political will and having nuclear engines available right now wouldn't change that.

     

    In other words what's the point of developing NTR if we wouldn't go to Mars anyway.

  10. On 12/20/2018 at 11:04 AM, magnemoe said:

     

    This, you nailed it, look at the types of missions we does, its small probes to various planets, people to IIS and various satellites. 
    For none of this missions the LV-N in KSP is an good engine, its only relevant for heavy payloads and pretty high dV requirements or medium payloads with very high dV requirements. 

    Nerva start to get relevant for manned moon missions or heavier probes who require high dV burns. Its very nice for manned mars missions. 

    Exactly, our missions aren't ambitious enough to justify the development cost for nuclear engine. Even if NTR engines were available here and now without any complications such as radiation, I still don't see them to be used for what we do today: launching probes to nearest planets, asteroids and crewed LEO expeditions. The only application that I am able to find is to transfer small probes (3-6 metric tons) directly to Jupiter and Saturn without relying on gravity assists. That would require creating a small Centaur-like nuclear upper stage for Atlas rockets. But you can get around that simply by using larger rockets - SLS for instance is supposed to launch Europa Clipper directly towards the destination. Oh and we launch probes to outer planets only once per 10 years or so - it's hard to imagine developing such hardware just to be used once per decade.

  11. On 12/1/2018 at 9:20 PM, Epox75 said:

    Hello everyone! I'm back to KSP after more than a year and I'm doing a career with 1.3.1, RO and the dev version of RP-0. I have a very simple request: once I made a cfg patch to fix the AIES landing gears by copying it from the AIES thread, which isn't available anymore... maybe some of you have it? :)

    Thanks in advance, 

    Epox

    Do you mean this below:

    
    @PART[expendLandingLeg]
    {
        !MODULE[ModuleLandingLeg]{}
    
        MODULE
        {
            name = ModuleAnimateGeneric
            animationName = extender
            isOneShot = False
            startEventGUIName = Extend Landing Strut
            endEventGUIName = Retract Landing Strut
            actionGUIName = Toggle Landing Strut
            allowManualControl = True
            allowAnimationWhileShielded = False
        }
    }
    
    @PART[godLandingLeg]
    {
        !MODULE[ModuleLandingLeg]{}
    
        MODULE
        {
            name = ModuleAnimateGeneric
            animationName = desple
            isOneShot = False
            startEventGUIName = Extend Landing Strut
            endEventGUIName = Retract Landing Strut
            actionGUIName = Toggle Landing Strut
            allowManualControl = True
            allowAnimationWhileShielded = False
        }
    }
    
    @PART[godLandingLeg2]
    {
        !MODULE[ModuleLandingLeg]{}
    
        MODULE
        {
            name = ModuleAnimateGeneric
            animationName = desple
            isOneShot = False
            startEventGUIName = Extend Landing Strut
            endEventGUIName = Retract Landing Strut
            actionGUIName = Toggle Landing Strut
            allowManualControl = True
            allowAnimationWhileShielded = False
        }
    }
    
    @PART[legstrotLandingLeg]
    {
        !MODULE[ModuleLandingLeg]{}
    
        MODULE
        {
            name = ModuleAnimateGeneric
            animationName = bajar
            isOneShot = False
            startEventGUIName = Extend Landing Strut
            endEventGUIName = Retract Landing Strut
            actionGUIName = Toggle Landing Strut
            allowManualControl = True
            allowAnimationWhileShielded = False
        }
    }
    
    @PART[plommsLandingLeg]
    {
        !MODULE[ModuleLandingLeg]{}
    
        MODULE
        {
            name = ModuleAnimateGeneric
            animationName = abrir
            isOneShot = False
            startEventGUIName = Extend Landing Strut
            endEventGUIName = Retract Landing Strut
            actionGUIName = Toggle Landing Strut
            allowManualControl = True
            allowAnimationWhileShielded = False
        }
    }

     

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