Thread: [Traveller_TNE] Time To Orbit Calculator

2 posts.

Ta Da!
 
Here is my time-to-orbit calculator.  I've attached it as an Excel Spreadsheet.  It contains no macros...just calculations.  If anyone wants me to post it in another format please let me know and I will do my best to accomidate you.
 
I was going to explain everything in this email, but I detailed all the steps out in the spreadsheet so, hopefully, it should be fairly self-explanitory.  I am fully expecting people to have lots of questions and/or comments about it so feel free to ask.  There is a chance I've done something wrong in the calculations and, if that's the case, I would actually like to know it so I can fix it...assuming I can.
 
The one thing I will mention about it is this: For the sake of simplicity I have simply calculated the time it would take to accellerate and travell in a strait line to half the hieght of the orbit, then to travell and de-accellerate to the full height of the orbit, and added that to the time it would take to achieve orbit from a stand-still.  The result is probably a bit more then reality, but I figured that this might account for varriables that I left out like drag.
 
To use the time-to-orbit calculator simply enter a percentage of the worlds radius as a decimal in the "Orbital Distance #" feild, an accelleration in G's, and an Accelleration Multiplier, and then look up the time in minutes to orbit.  The Orbital Distance # is used to calculate the height of the orbit based on the radius (not diameter) of the world.  Accelleration should be obvious.  Accelleration multiplier is just in case you want to account for drag or something else I forgot.  It multiplies accelleration in the atmoshpere by itself.
 
I hope I didn't miss anything.  Have fun...I know I did.

Oh, and I forgot...these times are for getting *to* orbit...not coming from orbit.  They do work for coming from orbit if you are using a streamlined hull configuration.  If, however, you are using an airframe configuration you can air-brake on your way down to a speed of, I don't know...say 6,000 km/h, and then de-accelerate from there.  Using the formulas in the time to orbit calculator should make this a realitively simple matter to calculate.
 
(If anyone wants me to give formulas then I will...Ive spent the last little while immersed in them and have no idea what most people on this list know or don't know.)