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pshimko27

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Posts posted by pshimko27

    specific calculations?

    in KSP1 Gameplay Questions and Tutorials

    Posted

    5 hours ago, Zhetaan said:

    The Oberth effect is probably the easiest to calculate.  You'll need the vis-viva equation and a decent working knowledge of algebra, but it obviously can be done:  the ship flies, after all.

    Longitude of Ascending Node (which I assume is what you meant; how large the ascending node is is simply your inclination angle, but where it is is the longitude) is much more difficult to do.  The problem is that in reality, LAN is defined based on a 'fixed' (that's only relatively, locally, and temporarily true, but it works for navigation for now because of the scales involved) point in space, and the only 'fixed' points in space are the stars.  KSP, on the other hand, doesn't have stars.  It has a pretty skybox, of course, but that skybox is essentially painted on the face of the universe for aesthetics and without any consideration for navigation.  In other words, it has no fixed orientation, which means that you cannot take repeatable, reliable bearings from stars.

    That said, there may still be ways to help you:  I find it difficult to believe that there would be an impossible challenge on the Discord without someone else figuring that out and announcing it.  What is the challenge?

    the challenge is patched nonics, basically you have to go to mun (done) and back with a L1 tracking station and no kerbal engineer, the hard mode is to go to duna and back with a L1 tracking station (almost done), and the super hard mode ("impress me") im gonna try to get to either moho or dres and back, and can i have the formulas?

    help i need to land on moho with only an ion engine

    in KSP1 Gameplay Questions and Tutorials

    Posted

    1 hour ago, jimmymcgoochie said:

    You need to shed weight to land, which in this case probably means fuel. Point normal or antinormal (:normal: or :antinormal:) and burn until your TWR goes above 1 or you go below 1000m/s of delta-V; if your TWR goes above 1 first you have a chance of landing, but if you have less than 1km/s then you don’t have enough left to attempt a landing. A single ion engine may not be enough for a Moho landing since Moho has relatively high gravity and ion engines are pretty weak.

    If you get a high enough TWR and have the fuel left to attempt a landing, lower your periapsis to just skim over the surface at periapsis, then brake hard at periapsis to slow down for landing. Try to control your vertical speed so you don’t crash, but remember that pointing away from retrograde will cost you more delta-V and hovering is just wasting fuel.

    thanks but lowest weight i can get to is not much better, only 1.9 Ts

    1 hour ago, Gargamel said:

    Moved to Gameplay Questions. 

    thank you, i dont know where everything is

    help i need to land on moho with only an ion engine

    in KSP1 Gameplay Questions and Tutorials

    Posted

    29 minutes ago, 18Watt said:

    A TWR of .32 at Moho sounds about right for a single Ion engine and a ship that weighs about 2.2T.  If that is the case, you will never get your TWR above 1.0 at Moho with your single Ion engine.  So a safe landing will not be possible.

    I estimate that a small probe would need at least 3 Ion engines to have a TWR > 1.0 at Moho.  You'd also need enough solar panels and batteries to keep them running full blast for several minutes.

     

    i already have 2 solar panels and a 1.25M powerbank, i have 3 lt2 landing struts can those handle the stress?, also since i will probably have to send another mission anyways would it be better to land a probe on eve or try again with moho?

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