the (simpler) math behind the explosions.

[toric5]

well, my parents are on it again, "what good are these computer games! go play outside in the sub zero temps! its healthier!(not actually what they said, and no offense to any parents, just a satirical start to the thread) anyway, i thought i would do a complete duma mission without any testing before the final craft launch. that means that I'm gonna be calculating my Dv and TWR by hand an such (thats the whole pour pose of this mission, to show them that its more than just explosions:sticktongue:) anyway, i would like to show you my craft and calculations (results come after.)

for mass measurements, one tt14-a stability enhancer weighs .1t[lander 
one central 1.5m tank +1.5m side tanks (fl-t8000
duna surface gravity=2.94
duna orbit Dv= 2000 (including much room for error)


[accel. with Lv-909 +2 side tanks
m=18.2
f=50
f=ma=f/m=a=2.73
can’t take away any more fuel. need more power.]


[accel. with 3 Rockomax 48-7S +2 side tanks
m=19.2
f=90
f=ma=f/m=a=4.69
twr of around 1.5. acceptable.]


[Dv with 3 Rockomax 48-7S +2 side tanks
Isp=350
Ms=19.2
Me=7.2
ln(Ms/Me)*Isp*9.81=3,367.68
more than enough for orbit. actually enough for the return trip. changing plans…
]
[transfer stage
duna transfer Dv=1160
fuel measured in fl-t8000


[Dv with 4 LV-909 + 7.5 1.5m tanks
Ms=50.4
Me=24.8
Isp=390
ln(Ms/Me)*Isp*9.81= 2,713.13
more than enough. have added a probe and science to have the transfer stage land on ike. now to get something that can launch this thing.]




[accel. with 4 LV-909 + 7.5 1.5m tanks


f=200
m=50.4
f=ma=f/m=3.97


enough, but gonna be a bit slow.]
]

so yah, heres the album that will eventually contain all the pics

<iframe class="imgur-album" width="100%" height="550" frameborder="0" src="http://imgur.com/a/k0XAw/embed"></iframe>

the plan of this mission is that the upper transfer stage will double as a simple ike probe, while the lander in fact has enough Dv to get home on its own. i may add a rendevouz with the probe after it has retuned from ike to cut transmission losses.

anyway, what do you guys think?

Edited January 24, 2014 by toric5
fixing images

[toric5]

imgur albums do not want to work. any help?

[Greenspan]

What if you took the same knowlege and calculated what it would take to perform a Earth-Mars mission? The equations would be the same, just some of the fundamental parameters would change (people down in the Science Lab forum could probably help). I think that would be much more impressive to an outsider who knows nothing about KSP; that you took this knowlege from a game and applied it to a real world problem.

[toric5]

meh, just wanted some fun out of it as well. (i can't test a mars mission as easy as a duna mission.)

not to mention you can do a lagrange point transfer IRL, and i have no idea what the Dv for that would be. (N body physics make things VERY complicated.)