tseitsei89

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About tseitsei89

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    Sr. Spacecraft Engineer
  1. Low Gravity & High Atmo Density Question

    Okay now I have more time so I'll try to write a proper explenation. The hardest part is first so feel free to skip over it if you don't understand it. Buoyancy is actually caused by the pressure difference on the top and bottom part of the object. And there is a pressure difference since the equation for calculating the hydrostatic pressure caused by a fluid is p(fluid) = roo(fluid)*g*z, where roo(fluid) is the density of the fluid, g is the local g and z is the height of the fluid on top of the point where we want to calculate the pressure for. So the z will be different for the top and bottom parts of the object. Now, to get the actual force caused by this pressure difference we need to calculate how quickly the pressure is changing in different points. And we can do this by simply taking a gradient of the pressure. So grad(p) = roo(fluid)*g*grad(z) = roo(fluid)*g. And now finally we have to integrate this pressure gradient over the whole volume of the object: integral[ grad(p)*dV] = integral[roo(fluid)*g*dV] = roo(fluid)*g*integral[dV] = roo(fluid)*g*V. HARDER PART ENDS HERE. The rest should be quite simple. As we calculated above the upwards force caused by buoyancy in Newtons is F(up) = m(atm)*g = roo(atm)*g*V where g is the local g. The object is floating when upwards force equals downwards force (aka gravity) so F(up) = F(down) --> roo(atm)*g*V = m(object)*g --> roo(atm)*V = m(object). Now we also know that m(object) = roo(object)*V, therefore roo(atm)*V = roo(object)*V ---> roo(atm) = roo(object). And this obviously means that the object will float stationary if its density is equal to the density of the atmospheres density. The magnitude of gravity nor the shape or volume of the object do not play any role in this.
  2. Low Gravity & High Atmo Density Question

    Depends on the volume of the said object
  3. Interplanetary Marksman Challenge!

    1. Test what is the velocity of the cubic struts when fired from your cannon 2. Make a node that hits your target celestial body AND has the amount of dV you got from the first test(s) 3. fire at that node and you should be really close...
  4. Orbital decay?

    Yeah this is just a NO for me... Having to boost my comsats every once in a while would soon get quite annoying. It wouldnt really add any challenge to the game but instead it would add a whole lot of irritating "routines" that I just have to do at times...
  5. Auto-Rocket?

    This so much! You learn a lot and you get to design exactly the autopilot you want/can design currently...
  6. Cheating; A meditation on it's definition in modded KSP

    If you are participating in a challenge, then everything that goes against the rules of that challenge is cheating. Otherwise nothing is cheating since you are only playing by yourself...
  7. Roads to Duna: No Moar Boosters (UPDATES!)

    Ok forgot the (1-(Blaah)) but yeah I can work with this thanks edit: this will probably take a while though... So many things to consider/optimize. So a good challenge I would say...
  8. Roads to Duna: No Moar Boosters (UPDATES!)

    @sevenperforce : Are design modifiers calculated like (A+B+C)*mainscore or like A*B*C*mainscore, where A, B and C are different design modifiers.
  9. Roads to Duna: No Moar Boosters (UPDATES!)

    That is already the most trivial and least time consuming way to do this... Just design a lifter capable of lifting your heaviest payload and use that for every launch. So that really isnt necessary rule.. But yeah. A nice challenge. Might try it The stock system is already small/trivial enough to go anywhere without ions/NERVs...
  10. This. So much this. It would make KSP so much more awesome. New procedurally created planets for every save AND a fog-of-war (fog-of-exploration) like mechanic. First we would only know the approximate orbits of the few bigger planets. Then we build (orbital) telescopes to figure out more precise orbits and masses for the planets and to find more celestial bodies (smaller planets and moons). Then we send probes to interesting bodies to further study their composition/atmosphere/good landing locations/gravity. And after that we might send kerbals to land on those bodies because we have studied them extensively enough to get all the parameters needed to be able to design a functioning lander for those circumstances. All this would add that incredible sense of exploring new things and achieving something new to the game and that feeling would remain there from save to save since you can never know what you'll find if you start a new save That is what would make ksp THE game of all time IMHO (dont get me wrong it still is one of the very best games I have ever played).
  11. [kOS] Mission Challenges

    I have rendezvous done and I started working on docking script. Then I got sucked away by rss/ro and usi kolonization on normal ksp and writing a hovercraft driving script for kos... But yeah. This is stillinteresting. There are just too many interesting thongs going on for me in ksp right now
  12. The Retro Solar Rescue

    Regardless it is still worth using as much of Burbarrys dv as possible since, as @herbal space program already mentioned above, it is effectively "double effective dv"
  13. Realism Overhaul Discussion Thread

    Ok thanks. I knew it was a real intended thing. The speed at which it happens just surprised me completely... Another question: is there a way to filter engines in the VAB while building so I could filter out all that use lqdH and lqdO?
  14. The Retro Solar Rescue

    There is a navball in the EVA view nowadays isnt there? Or am I remembering everything completely wrong?
  15. Realism Overhaul Discussion Thread

    I'm still quite new to RO and am running to a problem I seem to be unable to solve... Whenever I'm putting lqdHydrogen or lqdOxygen in to my tanks they just boil off in a matter of just few days. Even if I'm usin cryogenic tanks. So my question is how can I get them to stay in their tanks? Most of the engines are using lqdH and lqdO or at least lqdO and something else and I obviously cant use those engines for anything beyond LEO for now...