Description
App Information Multistage DeltaV Calculator
- App NameMultistage DeltaV Calculator
- Package Namecom.evandisoft.multistagedeltav.app
- UpdatedApril 7, 2015
- File Size930k
- Requires AndroidAndroid 3.2 and up
- Version1.0.1
- Developerevandisoft
- Installs500 - 1,000
- PriceFree
- CategoryTools
- DeveloperEmail [email protected]PO Box 763 Vancouver, WA 98666-0763
- Google Play Link
evandisoft Show More...
Multistage DeltaV Calculator 1.0.1 APK
Have you ever wanted to see how the totaldelta-v of a rocket changes when you add an additional stage?This app allows you to calculate the total delta-v of amultistage rocket. Instead of just applying the rocket formula toone stage, this app display's the delta-v for each individual stageand also the total delta-v of the rocket down to that stage.You can save and load rockets or individual stages. You caninsert a new stage at the beginning, at the end, or in-betweenstages.This can be very useful in space simulators like Kerbal SpaceProgram. This is not only useful for designing the rocket. This canalso be vital when planning a new maneuver in order to see if youhave enough delta-v left in your rocket.The saved rockets and stages are stored in the/data/data/com.evandisoft.multistagedeltav.app/files folder on thedevice. There is also an auto-save feature. The auto-save file isstored in the same folder and its name is "autosave.json".How to use:To use this effectively, you have to separate each stage andcalculate that particular stage's full mass (mass when full offuel), dry mass (mass when missing fuel), and ISP (which is easiestto do with one type of engine per stage). The fuel you remove tofind dry mass is only the fuel that will be spent in that stage.Make sure when you calculate the full mass and dry mass of aparticular stage you do not have any other stage attached.How to use in Kerbal Space Program:In Kerbal Space Program, the game will not calculate DeltaV foryour spacecraft but it will tell you the mass of the rocket.To calculate "Full Mass" and "Dry Mass" in Kerbal Space Programit is easiest to isolate each stage and use the games masscalculation once isolated. You can isolate a stage by using the"Root tool" (which changes which part you have to click on to movethe rocket about) to make some part of that stage the new"Root".Once that part is the new "Root" you can remove other stageseasily. With other stages removed (just have them set aside anddon't leave the VAB until they are re-attached or those otherstages will be lost) the mass on the bottom of the screen will tellyou the mass for that particular stage only.Full mass is displayed before you have removed the fuel fromthat stage. Dry mass is displayed after you have clicked each fueltank and dragged down to 0 all the fuel and oxidizer amounts. Onlydo this for fuel that will be spent on that stage.The above method works well for stages that are in the verticalstack of stages, for stages attached to the sides of a rocket it ismore difficult to calculate. However, one can make those stages besimple standard lifting stages and use them over and over again.With the save/load stage features of this app, that reuse is veryeasy.Don't forget to refuel the tanks after you have obtained thenumbers!Don't forget to reset your command module or probe as "Root" afteryou are done.Note:I have the stage numbers "backwards". What one would normally callthe first stage has the highest n in the label "Stage n" of all thestages. The reason for this is that it lines up with how the stagesare numbered in Kerbal Space Program. What is numbered as "Stage 0"is actually the final stage of the rocket.Disclaimer: I'm not liable for any damages resulting from anypossible inaccuracies of my app or failure to calculate perfectlyor at all correctly. I think it works, I've used it a lot, and Ilike it a lot. But I'm not willing to bet my life on it! Don'tdepend on this app if you are designing or using real rockets!
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