TWR for duna

[MKI]

I known it has to be above 1.00 to leave take off, but I want to know exactly the TWR by using kerbins gravity as a comparison.

So if I have a Twr of 1 in kerbin orbit what would it be at Duna? Disregarding transfer and orbit.

I'm a very cautious player and don't want to send a ship that can't take off lol.

[blizzy78]

Kerbin's surface gravity is 9.81 m/s^2, Duna's is 2.94 m/s^2. So 9.81 divided by 2.94 is ~= 3.3. But really, you should use Kerbal Engineer Redux, it makes calculations a whole lot easier.

[capi3101]

Of the planetary bodies in KSP, Kerbin's got the third highest surface gravity behind Kerbol and Eve. Long and the short of it: if your ship can take off from Kerbin successfully, it should be more than capable of taking off from almost anywhere else in the system.

[MKI]

Kerbin's surface gravity is 9.81 m/s^2, Duna's is 2.94 m/s^2. So 9.81 divided by 2.94 is ~= 3.3. But really, you should use Kerbal Engineer Redux, it makes calculations a whole lot easier.

Alright so if i were to have a lander with .33 TWR in kerbin orbit i would have no problem getting off of Duna. (.33 * 3.3 = 1.089). I use mechjeb for transfers and intercepts so ill probably just have to look further into the plugin to find the info next time.

[krenshala]

That sounds right, MKI (though it looks like you did early Pentium math there).

I second Kerbal Engineer Redux (the only mod I have installed), as it has an option specifically to show you your numbers in each planet and moon's gravity.

[dlmarti]

Agreed on the Engineer Redux, its an essential mod.

[LMA]

We could do with having someone make Kerbol system in Universe Sandbox and then we can study that for gravity comparisons I'm building a ship in orbit but I have no idea what TWR it should have for transfer to MUM orbit

I'm going to get Engineer thanks.