[HN Gopher] 42 - Spacecraft Simulation
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       42 - Spacecraft Simulation
        
       Author : Stevvo
       Score  : 50 points
       Date   : 2025-01-03 18:36 UTC (3 days ago)
        
 (HTM) web link (github.com)
 (TXT) w3m dump (github.com)
        
       | QuadmasterXLII wrote:
       | It's somehow a shame that this has have a core written in C, but
       | there really isn't an alternative. It's a really neat project! It
       | looks like its designed to be used from Matlab or Julia, which is
       | a fascinating pairing.
        
         | Keyframe wrote:
         | _It's somehow a shame that this has have a core written in C_
         | 
         | can you elaborate? why would that be a shame?
        
         | Stevvo wrote:
         | The models it runs were originally written in FORTRAN. They
         | were ported to C for convenience.
        
       | Titan2189 wrote:
       | Can I see it in action?
       | 
       | Would love to see it model the optimal suicide burn from Lunar
       | Lander http://moonlander.seb.ly/
        
         | Stevvo wrote:
         | https://www.youtube.com/watch?v=Xg5cevIOnHk
         | 
         | The graphics are surprisingly good; maybe better than stock
         | KSP.
        
       | thangalin wrote:
       | For my novel, I was struggling to find rocket simulators that
       | allowed setting an initial velocity for the rocket. Most of them
       | presume a starting velocity of 0. So, tangentially related, here
       | is my calculator that allows users to provide an initial speed
       | for the rocket before burning its onboard fuel:
       | 
       | https://autonoma.ca/calculators/rocket/payload/
       | 
       | Source file containing most of the delta-v calculations:
       | 
       | https://autonoma.ca/calculators/rocket/payload/Rocket.js
       | 
       | Being able to see all the TeX equations rendered with KaTeX on a
       | single page is quite convenient.
        
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       (page generated 2025-01-06 23:01 UTC)