Reactordrone

Duna is pretty safe to aerobrake at if you have a normal Hohmann transfer. The relatively low speeds and thin atmosphere means less thermal problems so most things can aerocapture without any heat shielding. Retract solar arrays and antennas and aim for 15-20km above the surface.

I built a lookalike and had plenty of delta-v to get to the Moon land at a couple of locations and return even with all the monopropellant so it might come down to piloting efficiency and launch and landing profiles. The rocket could certainly be much more efficient but if it's a flight profile issue you'll just be brute forcing your way out of the problem. If it helps, my early Mun ships were massive and massively inefficient so we've all got to start somewhere. You could try practicing with the stock Kerbal X. Flown well it can get you to the Mun and back and you can practice different ascent profiles and mun landing techniques like suicide burns and constant altitude burns.

That liquid hydrogen density looks off by a factor of 10. Should be 70.9 RS-25 and RS-68 will end up the same as the BE-4 SL at 988.1, the RL-10s get slightly less prop density at 976.4

RD-170s have similar thrust to an F-1 so you could do a first stage without external boosters and carry 100 tonnes less propellant for the same delta-v. That would also reduce gravity drag since your TWR would be higher (and the Saturn V had terrible TWR on the pad).

It's fairly normal for parts to survive re-entry and then hit the ground at speed. The weirdest thing I ever saw was a decoupled engine and fuel tank land perfectly intact next to my capsule when I first upgraded to 1.8 (I think). That's never happened again though.

Just be careful about time warping when you have multiple ships on parachutes. physics warp is fine but if you land and time warp it will kill the chutes on anything that hasn't landed.

Yep, it's just asking for a second laboratory.

With rescue missions you want to get your ship close so that you only have to spacewalk a hundred metres or so. If you've got to about 4-5km you can switch to target mode on the navball and rendezvous as though you were going to dock. The trick is to align your prograde marker on the navball with the target prograde marker. This can be done with RCS or by thrusting off axis with you engine to push the prograde marker. A simple method to start with is the stop / start method. In target mode point retrograde and zero out your velocity with respect to the target. Then point to the purple "target prograde" marker and thrust towards it at about 20m/s. When the prograde and target prograde markers start to drift apart zero out your speed again and repeat. It's not very fuel efficient but it will get you there. Once you're close you can EVA your rescuee and they can select your rescue ship as target (by clicking on it) and move towards it using the same method, keeping the prograde and target prograde markers on top of each other using small lateral puffs from the backpack thrusters.

If you have a mothership in orbit you could use the ship to get most of the way back to orbit, then EVA the crew and circularise with the jetpack.

Think of it as if the Mun wasn't there at all. Your ship is in a circular orbit around Kerbin at the height of the Mun. In orber to get back to Kerbin you slow down to drop your periapsis into Kerbins atmosphere. If you wanted to reverse your orbit direction you need to kill all of you forward velocity and then add more velocity to bring your periapsis up out of the planet.

You want the Echo Papa 607, https://memory-alpha.fandom.com/wiki/Echo_Papa_607

I'd assume the crush cores are designed to bottom out before the engines hit the deck.

I'm not sure they're in orbit. Usually in star wars a damaged ship will fall when it loses power indicating that they're holding themselves up with some kind of repulsor field. There may also be clusters of blockading ships all around the planet. They don't need to be within visual range to each have overlapping intercept areas.

Find a 13,000ft mountain and just hold the balloon while you're up there.

Yeah, civilian GPS is limited to 1000kts and 18km. https://en.wikipedia.org/wiki/Coordinating_Committee_for_Multilateral_Export_Controls

If you get too high or too fast the GPS will shut down (so that they can't be used for missile guidance). I guess that's one way to stop people tracking you.

have you completed the training mission, "to the Mun, part 1"?

This flight might prove the vehicle suitable for human flight and then the first manned mission will be used to qualify the rendezvous and docking systems. Assuming the reentry and landing goes to plan and they sort the clock issue out.

Depends on the size. Titan II engines used an open cycle gas generator, Soviet RD-250 engines for their large ICBMs used oxygen rich staged combustion or closed cycle.

Seven minutes until stream starts. ETA- scrubbed for the day. Software issue.

I thought that. The ring around the bottom of the engine bell looks like it's held on with velcro strips.

Pushed another half hour.

Cats in zero g are fairly funny though, https://www.youtube.com/watch?v=O9XtK6R1QAk

ISS crew size is mostly limited by the life support system. When shuttles visited they needed to add supplementary oxygen generation and CO2 removal.

Yeah, it's a bit of a weird statement. It's like complaining about your car repair schedule when you find out your mechanic is building a hotrod in his spare time.