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Arrowstar

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    Astrodynamicist

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  1. Yaroslav started following Arrowstar
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  3. joku

    Hello can someone tell me if there are some kind of tutorials for ksptot and how to use it for real solar system?

  4. Arrowstar
    It shouldn't be hundreds of gigabytes, but it's not unusual for it to be hundreds of megabytes, yes. Sorry about that, it's the way MATLAB packages built in code with my software. It shouldn't be hundreds of gigabytes, but it's not unusual for it to be hundreds of megabytes, yes. Sorry about that, it's the way MATLAB packages built in code with my software.
  5. Arrowstar
    Yep you can do that too in Multi Manuever Flyby!
  6. Arrowstar
    I assume this is a good thing lol.
  7. Arrowstar
    You can automatically import planet data from the main KSPTOT GUI. File menu, Import Celestial Body Data. Then follow the prompts.
  8. Arrowstar
    Hey everyone, just a heads up. In the forum crisis of the past two weeks I released KSPTOT v1.6.10! However, because the forums were down, and because I'm not really trusting them to stay up in the future, I've decided to move hosting of KSPTOT to SpaceDock. You can grab it here: https://spacedock.info/mod/3737/KSP Trajectory Optimization Tool The Google Drive links I had before will still work, but they only contain the v1.6.9 release I'm not planning on updating them. I'll continue to post change log and similar type stuff here for releases and especially pre-releases. In the mean time, go check out the v1.6.10 release. It's really quite a jump forward. I hope you enjoy it! Happy orbiting!
  9. Arrowstar
    Glad to see the forums are back!
  10. Arrowstar
    Unfortunately no, anything that involves changing sphere of influence must be done in Launch Vehicle Designer (or MA).
  11. Arrowstar
    Hi all, After a bit of a hiatus I've built KSPTOT v1.6.10 pre-release 8. Here's the change log! LVD: Plotting ground track with contour should be slightly faster now. LVD: Removed the camera pos/tgt/va text on the status bar. LVD: Fixed bug with the sun vector and general lighting position in 3D view frame. LVD: Added new surface textures for Earth, Jupiter, Moon, Neptune, Saturn, and Uranus. LVD: Added explanatory notes about the body x and z axis definitions in the bodies.ini file. New jupiter texture, higher res LVD: Fix bug with skybox disabling grid lines after enable/disable skybox. LVD: Provided ability for ground track display to be disabled. LVD: Performance improvements LVD: Added open loop kerbin launch example LVD: Added utility for finding best integrator for each event. LVD: Added more output to findBestIntegrator function. NOMAD optimizer now works better with consoleOptimize(). LVD: Removed warning about force models not being active if only gravity is active if nonspeherical gravity is on with the central body. LVD: Fix for planets with tilted axis not viewing correctly. Please let me know if you find any bugs. Happy orbiting! Hey there! Sorry for the long delay in getting back to you. In the porkchop tool, positions are always computed by solving Lambert's problem. This is the only technically feasible way to design a tool like that, so I'm afraid it can't be changed. Numerically propagating the orbit and altering initial velocity to hit the target point would take forever if you had to do it with an optimizer thousands of times to fill in the porkchop grid. Sorry!
  12. Arrowstar
    You can just open up the relevant bodies.ini file (so for you, the one related to RSS) and change the orbit parameters to match whatever it is need them to be. There's also a way to generate a bodies.ini file if you have KSP running and have the KSPTOT Connect plugin installed. From the main UI, you just go File -> Create New Bodies File From KSP. If you do this, you won't need to modify the bodies.ini file directly.
  13. Arrowstar
    That's due to the way RSS models Earth tilt in KSP. You can update the parameters in the configuration files as needed though!
  14. Arrowstar
    The easiest way to do what you want is to just open up the Porkchop plot generator and paste the UT time into the Earliest Departure Time box. It'll show the Year, Day, etc immediately below that box when you do.
  15. Arrowstar
    Usually if you right click a time related text box, you'll see an option menu that has an option for converting a KSP date to universal time. If you don't see anything, can you share which text box it is that you're looking at? Yes, it absolutely can. You would use Launch Vehicle Designer (LVD) for this work. Please let me know if you have any questions, and sorry for the delay in getting back to you, it's been a busy few months.
  16. Arrowstar
    I've recreated the bug and I believe I've got it figured out. I reuploaded the PR7 ZIP file. Please go ahead and redownload that and let me know if you have any issues going forward. Thanks!
  17. Arrowstar
    Today I've built KSPTOT v1.6.10 pre-release 7. This pre-release adds a bunch of new functionality and includes some bug fixes and minor performance improvements, all of which are in LVD. Here's the change log: Noticeable performance improvement when using numerically propagated celestial bodies. LVD: Added new ground track tab to main LVD UI's display area. LVD: Added sky box code for more "cinematic" display of 3D trajectories. Set option to enable in View Settings. LVD: Added additional camera controls functionality (Dolly horizontally/vertically camera). LVD: New steering model: tabular quaternion interpolation. LVD: New throttle model: tabular throttle interpolation. LVD: Update version of IPOPT optimizer to v1.1.6. LVD: Add new SQP optimizer algorithm. LVD: Bug fixes and performance improvements. Please let me know if you find any bugs. Thanks! Happy orbiting!
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