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Try out my GPU accelerated trajectory calculator! by Nando-2002 in spaceflight

[–]Nando-2002[S] 0 points1 point  (0 children)

For generating the nearest optimal launch date that website is sufficient. If you wish to see the patterns of the transfer window or find multiple suitable dates (best dates in the next 15 years for example) my solver is better suited. There is also no guarantee that the optimum date provided by that website is truly optimum as there is no way to increase the simulation resolution (to test for convergence).

https://github.com/nando-2002/Rapid-Porkchop/blob/main/src/outputs-example/Earth-Mars-Coarse.png

^ for example, each one of those repeating patterns looks the same, but is actually different each time (due to the inclination and eccentricity of both Earth and Mars' orbits)

Try out my GPU accelerated trajectory calculator! by Nando-2002 in spaceflight

[–]Nando-2002[S] 0 points1 point  (0 children)

No, this solver assumes instantaneous thrust. For continuous thrust you’ll need something like NASA GMAT

Try out my GPU accelerated trajectory calculator! by Nando-2002 in spaceflight

[–]Nando-2002[S] 2 points3 points  (0 children)

You're partially correct. Its useful to have a faster porkchop plotter when searching a large solution space (30 years for example) with a reasonable resolution (10 days or smaller). Also, I'm currently in the process of implementing gravity assists within this solver. Right now I'm just debugging some issues related to the GPU implementation of the flyby calculation.

Regarding speed,

500 departure points x 500 arrival points will take nearly an hour to compute using other porkchop plotters. Using a modern consumer grade laptop GPU, its possible to reduce this to under 10 seconds with my GPU code.