Stochasty

Finally got a halfway decent spaceplane into orbit. Here's a few trips: First trip, a simple test flight to orbit and back: http://imgur.com/a/yXHb6 Next trip, a quick pitstop on Minmus: http://imgur.com/a/uRJke Next up, the Mun! http://imgur.com/a/TYpch And finally, Duna http://imgur.com/a/IL86u Barely. Needed an 8 m/s burn on the trip home to drop periapsis into the atmosphere... and I almost didn't have enough. Less than 3 m/s left in the tank at the end.

Dead? What nonsense is this? Not even close to dead; just not easy as pie anymore.

Decided to start playing again now that 1.0 is out, and... wow! Changes! Looks like spaceplanes are hard again. The design I took to Moho won't even make orbit. Airhogging seems to be out as well; adding intakes reduces top speed, due to increased drag. The new jet engine thrust profile is going to take some getting used to; haven't managed to get a craft above 1300 m/s on airbreathers yet.

Nose up posture on the runway + single front gear = wheelbarrow. What's happening is that, as you gain speed, your rear landing gear are lifting off of the ground, leaving your plane balanced on the single front gear. Not good. The solution is to change your posture to be either level or slightly nose down on the runway.

The smallest positive integer greater than any finite number that can be represented using a computable algorithm with fewer than ten thousand symbols.

What you are missing from a theoretical standpoint is that both metaphor's Moho voyage and the MESSENGER mission were using gravity assists in combination with deep space maneuvers. This is a case that I didn't cover in my tutorial (I was more interested in looking at what could be done from a pure gravity assist standpoint). Basically, the way these missions work is like this: suppose I'm in an orbit, where Moho marks my periapsis. I can use a flyby of Moho to drop my periapsis to inside Moho's orbit (simultaneously lowering my apoapsis). Then, on the next orbit, I can make a deep space maneuver at apoapsis to raise my periapsis back up to the level of Moho's orbit. By doing so, I will have lowered my effective closing velocity at my next Moho encounter by more (often much more) than the delta-V I spent during the deep space maneuver. With precision and timing, you can set things up so that, at each stage of this process, you end up in a resonant orbit and repeatedly encounter your target, slowly matching orbits with each pass; however, at some point, depending on the mass of the target body, the savings from the Oberth effect will outweigh the savings from the gravity assist process and you will be better off finishing the capture with a single burn. This same process (in reverse) works going outwards, as well - I used this trick during the return phase of my Moho SSTO mission.

Nicely done! Glad someone else managed to make it.

Foosball. And I agree, the foosball entries were a clever idea. Team 3 got my vote for the forum side, barely. Team 6 suffered from the fact that I watched the videos in numerical order, and also from the fact that I had a conflict of interest.

Not that I don't understand this criticism, but building orbits is every bit as difficult as building spaceships. That said, I disagree that this was a building competition; it was an art competition. We were (tentatively) planning to do something completely different until we learned about the one screenshot limit. At any rate, congrats to all of the other teams. T'were some nice trophies on display. I especially liked forum Team 4; that's an impressive display of building skill.

It's been a while since I've messed around with KSP, but I've been looking for an excuse to play again. This sounds fun; guess I'll throw my name into the hat for teams. I imagine my resume speaks for itself.

"Just." It's called rocket science for a reason; if these things were easy to do we'd be doing them in real life rather than video games. That said, if you think this game isn't for you then that's your prerogative. However, I recommend that you stick with it at least for a while; KSP has a steep learning curve, but the thrill of finally making it to another planet is well worth the struggle. Edit: Really? In that case, something is going wrong. It takes less than 1,000 m/s delta-V to break free from Kerbin's SoI once you are in orbit. Describe to us what you are doing and we may be able to help.

If you have enough delta-V, then you have enough fuel. In rocketry, the two are (for all practical purposes) synonymous. Delta-V refers to change in velocity - it is a measure of how much you can change the velocity of your craft. Note that this does not mean one burn (although it can); it means the total amount of change in velocity that your ship can manage throughout the entire voyage - in essence, it is your budget for your flight. If (according to the maps) you have enough delta-v for your voyage, and yet you are still running out of fuel, then the problem is not that you need more fuel. It's that you need a better (more efficient) flight plan. Getting to and from other planets is hard, but it has far more to do with when you leave and how you travel than it does with how much fuel you have. Almost any craft that is capable of a Mun landing and return can return from Duna - the delta-V requirements are almost identical - but you have to have the right flight plan to do it. The delta-v numbers given by the maps represent best-case scenarios for transfers made during the optimal transfer windows. If you aren't flying during one of those windows, then it can take much, much more fuel (prohibitively much, if you are flying at exactly the wrong time). Nine times out of ten, careful flying trumps exhaustive building in this game. Make sure that the phase angle between Kerbin and Duna is correct before you leave, and make sure you have the right ejection angle when you go - if you do that, then you'll most likely find that the ship you have is already capable of doing the job. (If the terms phase angle and ejection angle don't mean anything to you, then I recommend that you look up a tutorial on interplanetary flight; it's not all that hard once you understand what to do, but it's not intuitive.)

TWR is only an important consideration when you are taking off or landing. For those events, you need to ensure that your TWR is greater than 1 (and that you have enough delta-v to get to orbit). However, once you are in orbit, TWR is no longer important and the only thing you need to worry about is delta-v. For low TWR craft, it will sometimes be necessary to split an ejection burn into multiple parts across multiple orbits, slowly raising your apoapsis each pass then going around until you get back to periapsis for the next burn. However, if you have the patience to do this, then even ion engines are sufficient once you get to orbit.

You can do a flyby of anywhere using nukes, too. Better yet, you can do a flyby, land, and return using nukes on every target except Tylo and Eve, and ions don't help with either of those. So there is no reason whatsoever to use ion engines on an SSTO as the game currently stands; they are unnecessary. Which was my point to begin with.

QED. You want to build multi-stage, and use ions for the transfer? Sure, they're great, if you can tolerate long burns. But if that's what you want to do, why are you talking about it in a thread devoted to the capabilities of single stage craft? I was quite explicit in my above post: ion engines are unnecessary for single stage craft.