Kryxal

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About Kryxal

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    Junior Rocket Scientist
  1. If you have trouble peeling off sets of boosters, just use the separatrons, it's what they're there for. Just how do they crash into it?
  2. They're very useful for avoiding this sort of thing, center of mass should be VERY close to in line with center of thrust. One way to do that might be to make the wings higher, so "below the wing" is closer to being on the same level as CoM
  3. Worst case, just go hyperedit-crazy with a lander. It may not be elegant, but it should work.
  4. How to Flyby Multiple Planet

    OK, here are some numbers for a transfer from Kerbin to Moho, via the method I stated. Burn#1: 2288 m/s; 1960 m/s prograde -1180 m/s normal This burn is to escape LKO, and is probably somewhat unrealistic for being plotted too low, around the 200 km mark in a 40 minute orbit. Burn #2: 23.4 m/s, -23.4 m/s prograde This burn is at the periapsis of the solar orbit, and is to adjust for a closer intercept at Moho's PE Burn #3, 75 m/s, -75 m/s normal This burn is to fine-tune the orbit's plane not long before intercept, could be cheaper if done at the other node, probably more like 25 m/s Burn #4, 1974 m/s, -1974 m/s prograde This is the Moho capture orbit, into a 350 km orbit. This all comes out to 4350 m/s to make this transfer, extra losses for non-instantaneous burns are a given but that would happen with ANY transfer. How well would your proposed transfer do?
  5. Ship rotates on EVA

    Do you have a probe core or a pilot still on board? SAS turns off if you don't.
  6. How to Flyby Multiple Planet

    Being at your own PE is a good idea, for two reasons: for Moho you'll meet the AP or PE of Moho and so are going in the same direction, and you're moving your fastest relative to Kerbol so using delta-v reduces energy by a greater amount. However, I don't agree with the bit about the difference between your current AP and PE at Moho. To capture to Moho is roughly matching orbits, give or take a bit. It's VERY like a bielliptic transfer. You can either drop your PE to match Moho's AP, then drop your AP to match Moho's PE (and in the process switch AP and PE) or drop PE to match Moho, then drop AP to match Moho's AP. Will you accept that going to Moho's PE is cheaper, or do I have to prove it? Also, I explicitly said the plane change was part of the ejection burn, so what's this about changing inclination while in the inner system? This is the ejection burn FROM KERBIN, by the way.
  7. How to Flyby Multiple Planet

    I was talking about going direct to Moho's orbit, though not to Moho itself (probably). You'll need more delta-v to reach the node at Moho's PE, but your capture burn is considerably less so you come out ahead. Also, you combine the plane-change with your ejection maneuver, when the Oberth effect is helping you and when plane changes are cheaper.
  8. How to Flyby Multiple Planet

    Actually, the cheapest transfer only comes up ONCE per year, when the transfer gets you to both node and periapsis. Burning for apoapsis is cheaper on the Kerbin end, but you pay a LOT more to capture...
  9. Actually, a stable rocket is EXACTLY what you want for a good gravity turn ... the only time you're not staying on prograde is the pitchover maneuver, the initial turn to set up the rest of the gravity turn. Once that's complete, you just hold prograde and USE the stability of your rocket to your advantage.
  10. Second Stage Wobble

    If you can get your turn to be closer to an actual gravity turn, it will reduce stresses on the joint. This means you make a small turn early, hold attitude till prograde catches up, then just follow prograde. If you do it well you can have your rocket climbing the whole way, but mostly building speed sideways, and have your periapsis above ground before getting your apoapsis where you want it. By the way, if your rocket is built with sufficient drag at the back, you won't even need SAS to maintain this.
  11. It might be interesting to go with a refueling lander, that way just get it down and add some fuel to your other craft.
  12. Second Stage Wobble

    How soon are you turning and how sharply?
  13. Scan sat ideal orbit altitudes

    You have the second and third pictures reversed ... and I always figure there's no reason not to be higher if you can afford to.
  14. Scan sat ideal orbit altitudes

    All I really remember is, most stuff does well around 400-500 km, but there's one that likes to be up around 750-800 km. It's the one with the instrument on an arm or something...
  15. Mun Contract

    I'd probably just build it all as one piece but plan to land it empty ... BUT with ISRU (the small's enough, just have enough power to make it work somewhat). This means, as long as you have the capacity, sooner or later you'll get the materials back.