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Found 8 results

1. ## Parachute requirements formulae

Greetings While designing my latest craft, I was trying to work out what parachute setup will be required but I soon discovered that there seems to be a relative lack of information on this topic that can be easily found with the majority of information being vague rules of thumb for Kerbin sea level or an admonition for a simple "guess and check" approach. My hope is to find some more general purpose formula I can use to calculate the required parachute area for a given desired terminal velocity, vehicle mass and atmospheric density so that I can perform these calculations for other bo
2. ## Finding max separation of planets

I'm looking for some help/guidance on what is turning out to be a surprisingly challenging math problem: I'm trying to find the maximum possible separation between any two given planets. I think it would be useful, or at least interesting, to know this kind of thing when constructing comms relay networks, etc. I've got some idea how to proceed, but my efforts keep coming up dry (not least because of my merely intermediate math knowledge). Seems my problem needs new eyes and new ideas. I'm all ears!
3. ## Oribtal calculations?

A while ago I had a question that went a little like this: "Planet Kerbin has a radius of r from its center and gravity of G. Two identical rockets launch from the equator at opposite sides, and start accelerating along the rotation of the planet with the velocity of V. At what time after they finished acceleration did they reach maximum distance from each other, and what was the distance?" It also said in its prefix that "people attempting this question might want to find out a little about Kepler's laws." I think I got the answer, but I am not sure if it is right, as I didn't
4. ## Massive Duna Ship help

Hello fellow Kerbalnauts, I'm playing on the PS4 so sadly no mods to help me calculate things for my problem. No more So I'm constructing a massive Duna ship ( think Discovery from 2001) It is being built in a 90 orbit of Kerbin. The total dry mass of the craft is 70 tons. 55.2 m in length I'm planning on using nuclear engines to power it. My question is how much fuel do I need, to leave LKO and get to Duna ( planning launch during Duna Kerban close approach) My craft has currently 3 empty Kerbodyne 7200 1 Kerbodyne 3600 and a Rockmax X200-16, all empty.
5. ## My own CalculationsSheet

Hello kerbonauts, As a 'purist', I have never used any mods or cheatsheets and so I used to do all calculations by hand. The only way for me to use a CalculationsSheet, is to make one myself, so that's what I did. Using it for all sorts of hohmann-transfers, commsat-deployments and delta-v calculations. I know there have been other mods and sheets around for years, which can do exactly the same thing. I made my own CalculationSheets to maintain the 'purist' way of playing, but without having to do manual calculations. I have no problems at all with non-purists, it's a singleplayer g
6. ## SSTO Design Tools

Hello All, I recently learned that I'm heading back to school to do some postgraduate study and I need an excuse to revise and touch up my MATLAB skills. Simultaneously I have been grappling with the SSTO design problem and the fact that I cannot find any tools that will guide me in the design of an SSTO and payload. My thought is that while fluid dynamics was not my strong suit (I am a mechanical engineer) the simplified modelling of KSP should make this a reasonable endeavour with a bit of research. My a first step will be to produce an aircraft design tool that I will i
7. ## Time to periapsis in hyperbolic orbit?

I have been trying to find the formula that gives me the time ( or MeanAnomaly, same thing) to periapsis in a hyerbolic orbit. I spend some time searching google, wiki etc ( Totally didn't spend 6h searching...) and I found some info, but I can't figure out how to use it in code: https://en.wikipedia.org/wiki/Hyperbola http://conicsectionjpg.blogspot.si/2012/10/true-anomaly-of-hyperbola_2603.html This is my code right now: something to note is that I already have all other parameters calculated ( eccentricty, semiMajorAxis etc) If someone who knows the
8. ## Doing rocket/objects/bodies statistics calculations on paper vs. mods

Hello! I have been wondering about manually calculating the rocket/objects/bodies statistics on paper rather than using mods. I love KER, but I am looking for a way or a style later on where I don't rely on it to design my rockets... (And maybe later if I got the time, make small plugin that only shows the required information from the rocket to take them and do the TWR, dV, burn time, etc... calculations manually). I tried to make the calculations on a sheet, but they were way off the actual numbers shown in KER. I had a rocket in KER showed 11k dV, while on my sheet it was sho
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