Burn time calculator

[Braker]

Hello again, i look now for a burn time calculator to enable me to anticipate for long burns, instead of do a test burn of 1 second whenever...

If you have a mathematical formula or a tools to calculate that (by weight, by thrust allowed...)

Thanks again. Have a good day.

[ZenithRising]

Can't you just use the Maneuver system baked into the game?

[Braker]

That is what i do, but the estimated burn time displayed work only WHEN you burn, so it is very problematic because i can't anticipate the burn, and the precision goes out...

Thanks for your reply.

[rryy]

The game uses the acceleration of the last time you burned, so if you loaded a quicksave or used different engines, the burn time will be inaccurate.

To calculate acceleration, all you need to do is take your thrust and divide it by your mass to get your acceleration. The mass can be found in map view when you press the "i" button on the right.

[Braker]

Thanks and finally what is the relation with the Delta V and acceleration to find the final burn time?

[Anton P. Nym]

One trick; take the same design, mount an accelerometer on it (*gasp* an actual use of Science parts!) and do a full burn in orbit for a few seconds while the read-out shows. That'll tell you the acceleration when the stage is still fully fueled; it'll go up as fuel is burnt off and your thrust-to-weight ratio improves.

-- Steve