Tatonf

The gimbal of the engines is generaly good enough for me.

Yes Minmus is quite inclined (by 6° if I recall correctly), this is why I'm struggling with finding a good transfer window. I'm also trying to be very efficient on this transfer (I'm quite short in delta-V), which is why I'm using Alexmoon's planner.

Well I wasn't actually planing to build it but here you go : The top of the rocket is a fictional payload of 91 tons, so the rocket fuel is not used here. I've made some changes relatively to my previous post, so the rocket is less overkill now, but can still make orbit with 300 m/s left. The two boosters use the mammoth engine while the main one use a Rhino (because it have a better Isp). This is NOT asparagus staged.

Have you tried using the Kerbodyne fuel tanks ? 90 tons is pretty easy to put in orbit. Even without launching my game, I could tell you that 2 big Kerbodyne tanks with mammoth plus 4x1 big kerbodyne tanks with mammoth asparagus staging would be totally overkill for this task.

Hello ! I'm trying to do a transfer from Mun to Minmus. I'm using Alexmoon's Launch Window Planner to find a window. Here's the window it gives me after clicking "Refine Transfer" : Problem is, it doesn't work. It doesn't even show the blue makers that appears when you cross your target's orbit. What should I do ?

Nope, the delta-V map clearly goes for a 14km orbit, it's written on it and I suppose it's actually why Slashy calculated this specific orbit. The lowest altitude on Mun is -247m, though the game starts to get glitchy under 0m (you can land but it's always dark, no matter if it's day or night). I think Plusck got it right, I checked and the rotational speed of Mun is indeed 9.2 m/s, hence the difference. Maybe there should be a note about that in the tutorial ?

" Our total change in velocity was 580.3+(551.7-542.3) m/sec, or 589.7 m/sec. This is the DV required to reach orbit from the Mun." Soooo... Did you actually prove that the delta-V map is wrong and should display 590 m/s rather than 580 m/s ?

Bwarf. Not even. I'm sure they're gonna spend the next 6 months after the 1.1 release at working on implementing the com system that should have come with the 1.1.

Please define "low tier". Are you able to use something else than the Mk 1 pod ?

No number have been given on this topic, so... But if you're talking about the wiki, it displays the correct numbers (5h 59min 9.4s).

Hi. According to the KER, the Kerbal X rocket have 6428 m/s (vacuum). According to the delta-V map, you need : - 3400 m/s for LKO - 860 m/s for reaching the Mun - 310 m/s for a 14 km orbit - 580 m/s for landing (perfect suicide burn) - 580 m/s for LMO - 275 m/s for going back to a 25 km Kerbin periapsis (empiric result from my game) The sum of this is 6005 m/s. It means that you have a 6428-6005 = 423 m/s margin. Those 423 m/s can very easily be lost during 2 phases : 1) Going to LKO. Depending of your piloting, you might lose several hundreds of delta-V if you're doing a bad gravity turn 2) Landing on the Mun. If you're not doing a perfect suicide burn, you can also lose a good bit of delta-V. Now I'm going to try doing this, because I still haven't done it. EDIT : Testings have been done. The results are : 1) It is theorically possible to put the Kerbal X in LKO with 3100 m/s. I've done it with a bit less than 3200 m/s. Parameters are : 60 m/s, 15° flip, orbit achieved at 40 km. 2) Due to it's high TWR (~10), the lander is capable of doing a quite good suicide burn. I've done it with 630 m/s 3) At the end of the mission, I had 600 m/s remaining. Conclusion : Your piloting needs improvement. I would also add that replacing the LV-T45 with LV-T30 change the delta-V of your ship from 6428 m/s to 6419 m/s according to KER. The main reason is that the gain of mass is counterbalanced by the loss of Isp (the LV-T30 are less efficient than the LV-T45). As for the change of capsule, it might be a good idea, but you might consider adding a heatshied, because the Mk-1 pod is less heat tolerant than the Mk1-2 pod. In my test, the Mk1-2 pod have been able to do a successful one pass reentry without exploding. If you need any advise on a specific part, i'll gladly help you. EDIT 2 : This experiment left me with a thought : what could I do with the 600 m/s left ? The answer was : going to Minmus !

Fuel lines are Tier 4 tech, the same as the Skipper, and unlocking them also unlock the X200 fuel tank serie.

Probably 0, or something so marginal that it would be considered 0. The reason is, players would be tempted to minimize their crew for avoiding to pay too much wages, and therefore would never take rescue missions, as the rescued kerbal join your crew at the end of them.

I would also recommand Thud, because they have a better cost to thrust ratio than the Skipper/Mainsail. Thud : 7.58 / kN (atm) | 6.83 / kN (vac) | Isp : 275s (atm) & 305s (vac) Skipper : 9.32 / kN (atm) | 8.15 / kN (vac) | Isp : 280s (atm) & 320s (vac) Mainsail : 9.43 / kN (atm) | 8.67 / kN (vac) | Isp : 285s (atm) & 310s (vac) I also added their Isp because a better Isp means less fuel and therefore a reduced cost, but overhaul I've found that It's better to put 6 Thud rather than a Skipper.

This mod is for heretics. The Meter and the Second are the only true units for distance and time. Those of you who'll use this mod will encounter the same fate as Mars Climate Orbiter. You've been warned.

However, the pressure of it's atmosphere is only about 1.5 atm. ; which doesn't explain by itself the huge difference. The main explanation is the altitude of the orbits considered by the map : 100 km for Ganymede, 1000 km for Titan. There's a factor 10 here.

According to the Wiki there's science to be done on the surface of Jool (Trivia section). http://wiki.kerbalspaceprogram.com/wiki/Jool#Trivia

Do you still have this problem ? I've found the water to be much more forgiving since 1.0.5.

I just hope it will not have a stupid name if discovered. Just give it one of the roman's god remaining.

Of course, it's a siege engine used in the classical antiquity and middle ages. But old doesn't mean useless. You could still build something very similar that would launch things in space. Or you could use a catapulta.

So much empiric tests while the maths are quite simple. Just take the rocket equation : Delta V = ve * ln (Minitial / Mfinal ) If you were adding an infinit amount of fuel tank, that would push Minitial to infinity. If you were to calculate the limit of this equation with Minitial --> +oo ; knowing that Mfinal and ve are positive finite numbers, then you would get an infinit delta V.

IRL something like a balista would probably be more efficient.

Orbits are defined by 6 parameters, and "orientation" isn't one of them. Maybe you're looking for Mean anomaly ?