Jso

The first answer was correct. You need the dev files from Github to build those craft - Athena and Minotaur are new parts. Hang tight for the next release.

Delta is light/small, Atlas-Centaur medium, Titan (with 1205/1207 boosters) heavy. Atlas V is kind of med-heavy. Fortunately they only use 3, 4, and 9 boosters. 3 is easy. 4 is easy too, but if you want them lined up with the mounting positions it's a little asymmetrical so you need to put them on in pairs using mirror symmetry. 9 is also easy, you just put them on in three sets of three. That makes it simple to put one of the sets in another stage for 6 on the ground, 3 in the air staging (using editor extensions 9x symmetry complicates this step a bit). The variable height interstage on Minotaur is to accommodate different sized engines for the GCA.

It used to be much better - or worse depending on how you look at it. https://github.com/CobaltWolf/Bluedog-Design-Bureau/issues/300 Titan III is a very simple design with 2 big srb's. From a pure cost point of view it's all business. Solids don't require expensive engines. Complexity such as decouplers, fins, retros, ullage motors, instrument units, and especially rcs thrusters cost $. The mini decoupler was added specifically to address the high cost of 9x radial decouplers. Cryogenic stages are the most expensive by weight.

The lander can has a retractable antenna now, nice! We'll have to stick a better data transmitter in there. It needs to be rotated 180 degrees. The pitch controls are reversed when hovering facing this way. It's got room for a flag on the side. It's heavy for it's size and I'm thinking we could drop the mass to 300 or 200 kg. I'd yank out most of the MP and battery to compensate, but replacing that with other parts would be lighter than 100 kg.

I've just been throwing fx_smokeTrail_medium on the solids. I need to go back and fix it though because I don't like how it stops when the thrust drops (we use thrust curves). One thing to watch is not overdoing it since we don't want to grind the slower computers to a halt. It will never be SmokeScreen smoke.

Working on some new engine effects for stock (not RealPlume). Much thanks to @JadeOfMaar for making these available.

Sort of. It's a Star 48 plus up to 1 ton payload under the fairing. The Viklun-4688 fairing base tapers from 0.625 to 0.9375, but you could probably use a flat 1.25m fairing base with a flipped over 1.25-0.625 structural adapter. A single Dioscuri-4 Inline version for the core 3rd stage. The radial Dioscuri-4 doesn't have thrust vectoring, so you'll need 6 Dioscuri-4 Inline versions attached radially, and you'll need to find a nosecone you like for them (tweakscale helps). 4 light on the ground for stage 1, then 2 in the air for stage 2. You can also get away with the non-vectoring radial versions for the second stage and use the core stage's RCS for attitude control.

Komodo's right, that's what I would expect to see loading a normal scale Saturn craft file with the Saturn Rescale from extras. It's probably 2/3's fueled as well. Try building it from scratch.

It's choking on this line: parent = #$../ModuleEngines*/thrustVectorTransformName$ It should be: parent = #$../MODULE[ModuleEngines*]/thrustVectorTransformName$

Not provided by us, no.

You probably need the upgrades.

That stuff will be in the next release.

I think it's just that the maneuver doesn't make sense at the scale we're playing. Apollo came in at about 11000m/sec. In stock it's 3100, and in 2.5x 5100. There's just a lot more speed to lose in the Earth/Moon system.

I think it was 45,000m periapsis on a Mun return. This is 2.5x so that's 5000+mps. I really don't know how much the lift contributed vs just aerobraking into a suborbital trajectory.

You got it. Size is not a factor in delta V, only Isp and the ratio of wet mass to dry mass. dv = 9.80665 * Isp * ln(wet mass / dry mass). Cryo works best when delta V needs are higher and TWR needs are lower, since adding engines to get more thrust will hurt the mass ratio and offset the Isp gains. In addition a bigger but lighter second stage means the first stage can be smaller, or the payload can be increased. For the same delta V, if the second and third stages of that Saturn V were Kerosene/Oxygen they would smaller. But the whole thing would be well over 2 million pounds heavier and need a much larger first stage with 7 or 8 F1s to get off the ground.