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More Mass -> Less MaxDV -> Less calculation time. One iteration for one dV step. (Program stores dictionary of all dV. And in first versions they all output to a file) One disadvantage - my tool cant calculate "asparagus fuel routing". Compare http://garycourt.github.io/korc/ calculation time and memory req for 3-4 stages design - this is brute force. ps. did a little test... 84000dV, 200kg, 0.1TWR -> 8 sec for 10 stages design.

Idea is to create a dictionary of best solutions of mass distribution. Complexity is MaxDV*MaxStages. Example: It is easy to find optimal engine and mass of fuel for given payload, TWR, dV. Lets make a dictionary. (numbers and engines only for example) DV Engine TotalMass 50 Terrier 1000 100 Terrier 1050 150 Terrier 1150 200 Spark 1300 ... to max DV 13500 Rhino 123456 add stage 2. Dv counts from 100 to MaxDV. And we look what is better - keep 1 stage design or add stage 2 with stage1 as payload. Dictionary can lool like: DV Engine TotalMass 50 Terrier 1000 100 Terrier 1050 150 Terrier 1150 200 Spark+spark 1200 ... 13500 Terrier+Reliant 93456 13550 Terrier+Reliant 94456 ... to max DV 15650 Terrier+Mainsail 564123 and so on. Also you can look in source code.

Hello! If Meithan's site still dont work there is a similar tool http://forum.kerbalspaceprogram.com/index.php?/topic/123361-win-stage-optimizer-ksp-104/ No beautiful charts but it makes similar calculations.

This is a tool to optimize mass/delta V between stages of the rocket. Some mix of "Optimal Engine Charts v1.0 http://meithan.x10.mx/KSP/engines/" and "KSP Optimal Rocket Calculator v1.19 http://garycourt.github.io/korc/" without brute force to find optimal mass distribution. Program do not count mass of decouplers but anyway very useful for planning transfers. In this screenshot you can see, that tool calculate impossibility of 1 and 2 stage rockets with this conditions (required 15k dV, 0.6 twr, 1600kg, 8 engines) and inefficient more than 5 stages. You can manually edit "engines.txt" for adding non-stock engines or exclude engines you dont want to use. 19.dec.2015 v2.1 fixed regional settings bug. Add more info in output text. 23.dec.2015 v2.2 fixed rounding bug. Interface improvements. 06.jan.2016 Add link for 1.0.5 engines. Binary with source code here: http://www.mediafire.com/download/36u5h337blu842b/DeltaV2.2.rar engines.txt for 1.0.5 (with "Vector" Liquid Fuel Engine) http://www./view/wfyaggzbuw1yf3u/engines.txt License The "Stage optimizer" is free software licensed under the GNU General Public License v3. You are free to use, distribute and modify this software as you see fit, subject to the provisions of the license.