Shadow dream

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About Shadow dream

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  1. Shadow dream

    Work-in-Progress [WIP] Design Thread

    I am working on my newest SSTO which is supposed to get me anywhere (orbit at least) and also be functional. I still have to sort out some issues, especialy TWR in space and other details, but so far it's nice to travel with her. She is well built for atmospheric flight so far and has all means necessary to do a successful ISRU drilling. Current version link: https://kerbalx.com/Shadow_dream/Retaliator-ISRU As Mods she needs " Mk2 Stockalike Expansion " and " Orbit Portal Technology [OPT] Spaceplane Parts (Legacy) ". I know, OPT is quite OP when it comes to engines, but her design needed slick engines to not overcrowd her rear. I limited myself to using two SCRAMJET engines for atmospheric flight to help her accieve orbit, from there on it's NERVs only. As mentioned earlier her TWR in space is pretty bad yet, so landing on Ike was a challenge, but doable. In her Cargo Bays she carries a converter unit, two small ore tanks, drills and a Survey Scanner. The drills and the Survey Scanner are two independent crafts, that way she is quite compact to handle. The drills can be docked on the docking port, which faces downwards (as seen on picture). It gives just enough ground clearence - but do NOT attempt do do atmospheric landings that way! ;-) Survey Scanner can remain in Orbit, if needed. There is no benedit in doing so though. Action Groups are listet at KerbalX.
  2. Exactly that: Full breakes first, decouple, switch to engine(s), alt+q/e depending on which way it should spin, switch to the actual craft and fly. Advantage: Using RTGs it has infinite power and will run forever. Also it is relatively simple to build and therefore easy to adapt and expand. Disadvantage: missing control authority. You can only change pareters when switching to the engine(s) as slow down or change deploy of the prop for better efficiency. ---- OT: The prefered way is a turbo-prop due to its ability to alter thrust on the go. It's not perfect though, also it's less stable because it's build in a noticeably more complicated way. Also it still does not allow full control, so the gain is small compared to the added complexity and unrelyability.
  3. Shadow dream

    SSTOs! Post your pictures here~

    Is it too much to ask for screenshots in which the vessel can actualy be seen? I regularly stumble over proud engineers that can't wait for nighttime to post a series of pictures in which almost nothing can be seen. Kerbol is your friend!
  4. Shadow dream

    Work-in-Progress [WIP] Design Thread

    You can end fairings on other parts. As an example you can put a MK2 pod on top, some octagonal struts as extension (and clamp small satelites to it) and at the end the fairing plate. Then when building the fairing, you don't end it in a cone, but on the Mk2 pod. Another idea is to use fairings to close engines from upper stages. You don't need to stage the fairing, just leave it there.
  5. Shadow dream

    Work-in-Progress [WIP] Design Thread

    I haven't used this technique of propulsion often. I think the best I could do was download a working motor and try to copy it. What I did was experimenting with the deploy function hotkey, but my tests didn't go well. Do you have experience with such engines and would you reccomend using that technique to optimize thrust on low-speed and high-speed? I'm just thinking because you said it's important to lower pitch here.
  6. Shadow dream

    Work-in-Progress [WIP] Design Thread

    From the looks of it the craft looks a bit tail heavy. You should check CoM and CoL, if you haven't yet. Lift can be compensated with speed, which should not be the issue here. Also you could try and tweak the fuel flow / empty the rear tanks in order to help push the weight towards the nose.
  7. Shadow dream

    Sneak Peak

    When I ran into this problem I realized that I could not build crafts with lots of engines at the rear (where I thought they would make sense and construction easier). Engines are heavy. They are always heavy (opposed to fuel tanks), so they pull your CoM far behind and ultimately behind your CoL. What you could try is to palce your engines closer to the middle of your craft and/or build a BIG tailwing behind your current engines. Even though MK2 parts are pretty drag heavy, when I use them I usualy put a MK2 fuel tank on the side of the center tank. There I can mount engines (onto bicoupler) and intakes (also on bicouplers), which helps keeping the CoM where it starts. That way it's easier to control the changes during flight. tldr; get your engines further forwards, as centric as possible, then get bigger tail wings.
  8. Shadow dream

    Sneak Peak

    Horribly designed craft it is. It sounds evil, but what you did is to build a very tail heavy plane. You know what people say: A nose heavy plane flies poorly, a tail heavy plane flies once. You can notice that by the yellow ball (center of mass) being behind the blue ball (center of lift). It HAS to be the other way round. Edit: Just for your information, the exact position of CoM and CoL are much about trial end error, but ultimately depends on how fast your craft is supposed to fly. I.e if you build a WW1 type of plane, flying at less than 100 m/s allowes for CoM and CoL to be very close, with CoL being slightly behind CoM. It improves maneuverability. If you want to get faster (e.g. SSTOs) those two need a stronger distance in order to improve stability. However, if they are too far appart, your maneuverability will be poor or non-existent ( = nose heavy plane). Also you have to look at wet mass and dry mass. The way you place your fuel tanks arround CoM will more or less make CoM shift, which WILL affect your stability and maneuverability. An empty fuel tank has less influence on your CoM which can lead to significant movement of balance. Worst case is when you start with a stable plane, but shifting CoM ends up making your plane tail heavy, which means crashing.
  9. Shadow dream

    SSTOs! Post your pictures here~

    6k dV is not an easy task, especialy for a SSTO. Even with NERVs, which are mandatory at that point, the amount of fuel is hefty to get up on wings. So your best bet is loads of TWR (Rapiers) which are dead weight in the end, unless you plan on Tylo. I think your best option here is to build a SSTO which can get onto Minmus, then use ISRU to refuel. From that point on you can get pretty much anywhere you want, except EVE and Tylo. It's what worked out best for me and still was manageable. My attempts on SSTA-ing (O = Orbit; A = Anywhere) have only succeeded with overpowered mod parts (I used OPT space parts). Oh and feel free to post some screenshots of your steps here ;-)
  10. Shadow dream

    Plz send SSTO

  11. Shadow dream

    Rover Designs

    Actualy ... I never wrote that. Looks like an auto-filter. I also never wrote "I got liquided", but I got "the liquid you pour into a toilet after drinking lots of water"
  12. Shadow dream

    Rover Designs

    Currently I'm playing in a Science Save where I have Alt-F12ed me up to the 1K science tree. Yes it's cheating, but I'm ok with it because I generaly start a new save every patch and I got liquided. That way I can still go collect science without re-doing everything all over again and keep sandbox building for ease of experiments. I have found a small rover design I am pretty happy with and basicly re-create it every patch with minor changes. It allowes me to be quite mobile, take (almost) everything I need and still am able to stow it into a MK2 bay! https://imgur.com/F1Pj4ol Here I'm sitting next to a Monolith. I'm not sure anymore if it was on Mt. Keverest. I went there too but maybe I found the Monolith somewhere else. Oh, and there is a KAS docking port on the back. On a later iteration I swapped it for a Docking Port Jr. so I could automate loading and unloading of the rover verticaly using KAS hinge. (automate = hotkeys) Usualy I stay away from bigger rovers because I can't get a nice design. If I want to go bigger I just take a Malemut.
  13. Shadow dream

    Work-in-Progress [WIP] Design Thread

    Huh? Less fuel? Where have you learned to play KSP? The answer is MOAR BOOSTERS! (And occasionaly moar wings)