aqcrazyboy

Thanks for all the info guys. I decided to just forget drag and TWR because using Delta-V with maps seems much simpler... But I'll keep those in mind when I need to aerobrake.

Ahh. Thanks for the info. I'll keep that in mind when I need to aerobrake.

Thanks for all the replies, they helped a lot. I'm just going to keep the unanswered tag a bit longer until I understand the whole thing through and through. Thanks again!

I'm probably extremely stupid here. What do you mean by "Gravity"? Is it g=GM/R^2 or g=GM/R^2*MassofRocket?

Alright, thanks for the help. I'm still a bit confused here, I'd probably come back when my head is a bit more clear and go digging back in my physic reference books.

Oh wow. Thanks for all that info. It'll take a little time to digest though, I'll just play around with the numbers a little and experiment a little with KSP, and maybe come back if I have any other problems. Just a bit of clarification, I don't know the terminology that well. Is dry mass the Mass of your craft after all the fuel is run out for that stage? Time to re-learn all my physics.

First time posting in the Forums, sorry if I'm making any forum-related mistakes. Ok, so I'm new to KSP and I am currently tired of using trial and error and want to do some math instead of trying useless stuff over and over again, also trying to get a logical idea on what factors affect your rocket. I tried calculating Thrust to Weight Ratio and using it to calculate acceleration, but when I actually fired the rocket up it didn't match which I assume is because of drag. But when I tried looking up the wiki I found lots of information about aerobraking and all that stuff, and not so much about drag affecting your craft when it's lifting off. I did find this formula FD = 0.5pv^2dA, but when I plugged in numbers it ended up to be a 5 digit number 63504, and (assuming I am correct) I have no idea how to plug this in and find out how it will affect my speed. Anybody able to tell me how this drag formula works and how to plug it in and find out my speed? PS: If possible, can someone tell me how the gravitational force works? I know it's 9.807 in Kerbin but does it decrease the higher up you are?