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  1. dgatsoulis

    Tutorial Frame by frame animations in Orbiter

    In case you haven't seen any of these SC4 animations. here is the latest video: Unfortunately my Orbiter allocated time wasn't enough to create a fully detailed tutorial. What I can do, is give you an outline of the process and come back the soonest I have time, to include a more detailed...
  2. dgatsoulis

    Request Addition of oapiCreateVesselEx

    With vessel deletion via oapi.del_vessel and vessel status manipulation via v_defset_status, one thing that's missing is vessel creation in lua. I've been trying to add this function in the interpreter without much success. I'd like it to work in a similar way that vessel creation works with...
  3. dgatsoulis

    Request mp3 player MFD for XRSound

    Well the title says it all. XRSound is great but I miss the ability to play whatever track I want from my music folder in Orbiter. Can anyone make an MFD that allows you to do that? -List the music tracks in th XRSound\Default\Music folder. (or any custom folder specified in a cfg file)...
  4. dgatsoulis

    Surface Base New Rome

    Here is everything you need. Prerequisites: 1.Orcus Patera 2. D3D9 client for Orbiter 2016 2. [Optional but highly recommended] Complete Mars High Resolution Texture Set. (Don't forget to read the installation instructions). Unzip the attached file in your Orbiter2016 folder and run the...
  5. dgatsoulis

    Elliptical trajectory from 3 points and focus?

    In the pic below we have a suborbital trajectory, where one of the foci is set at the origin (0,0) and these are known: A (departure base), B (Apoapsis), C (target base) and the angle between them (from the origin). Is this information enough to determine the shape of the elliptical trajectory...
  6. dgatsoulis

    Challenge Europa Challenge

    As a continuation from this challenge, I wanted to see whether an orbit around Europa can be achieved, using the exact same setup. If you haven't visited that thread, this was the initial setup: Now I am shifting the goalpost much further inside Jupiter's gravity well: I also added a time...
  7. dgatsoulis

    SDK Question Guidance.h file missing from source code?

    This has been asked before, but I wanted to avoid necroposting. I am trying to recompile the OrionIII (with some changes) from wo2001, but I am missing a "guidance" header file. At first I thought it was part of the CVEL sdk, but that doesn't seem to be the case. I PMed sputnik a couple of...
  8. dgatsoulis

    SDK Question Recompiling the LuaInterpreter error

    I want to add a couple of functions to the LuaInterpreter.dll that suit my needs for a challenge I am creating. Before adding anything to the source files, I tried to recompile the vanilla ones that come with Orbiter 2010 P1, to see if I have the development environment setup properly. But I...
  9. dgatsoulis

    Tutorial In Rosetta's footsteps; a planning and flying tutorial [part2]

    [Part 1 here] Before we begin the planning phase, we have to go to (Orbiterroot)\Scenarios\Rosetta\01-Rosetta launch.scn and change the date to 4 days earlier. The reason for this is because the DSM1 body we created will be inside Earth's SOI on the day of the launch. Keep the waypoints note...
  10. dgatsoulis

    Tutorial In Rosetta's footsteps; a planning and flying tutorial [part1]

    First of all, many thanks to BrianJ for his excellent Rosetta v3 addon and flug for the Rosetta - Comet 67/P Landing Mission, ver. 3D with the tweaks and improvements. Also an additional thanks to Brian for his eye-opening trajectory and planning solutions (be it a Moon-Mars tutorial from way...
  11. dgatsoulis

    Tutorial Selecting the correct altitude for a given peak hull temp with the Ravenstar.

    Before we start I'd like to thank Douglas E. Beachy and Steve "Coolhand" Tyler for creating one of the most amazing and fun to fly spacecrafts in Orbiter. Also an additional thanks to Doug for sharing a part of the Ravenstar's hull temperature code with us, without which this tutorial wouldn't...
  12. dgatsoulis

    SMa and eccentricity of a hyperbola from TOF and distance

    In the pic above we have two spacecrafts in orbits A and B. The orbits are circular and coplanar. We are given the radii of orbits A and B and the TOF=t1-t0 that it takes to get from A to B via a hyperbolic transfer trajectory. Are these enough to calculate the semi major axis or the...
  13. dgatsoulis

    Ranking system with two score variables

    The ranking system on a challenge that I am making has two criteria: Delta-V used and Time of Flight. Obviously when two players have used the same Delta-V, the one with the higher rank is the one with the less TOF. And of course, when 2 players have the same TOF, the one with the less Delta-V...
  14. dgatsoulis

    A breath of fresh air!

    Congratulations David! My best wishes for a quick and painless recovery. Our very own David Courtney aka "blixel" had a double lung transplant just a few days ago. For those that don't know, David has cystic fibrosis. 3 days ago David got the call to rush to the hospital as a suitable donor...
  15. dgatsoulis

    Challenge Finesse your lunar landings.

    Here is a little something to help improve your lunar landings. After the TLI, you have just entered the lunar SOI and you are in plane with Brighton Beach. Your goal is to perform a soft landing on a pad at the base. Don't go through the crater walls or the main building and do not touch the...
  16. dgatsoulis

    Scenario Tito's 501 day EME free return journey in TransX

    Here is a quick attempt to recreate the 2018 Earth→Mars→Earth 501 day journey proposal in TransX. I got the dates from here: Departure is on January 5th 2018, Mars flyby on May 20th 2018 and arrival back to Earth on May 21st 2019 Here are the pics of the plan: And here is the scenario...
  17. dgatsoulis

    LUA Random date, launch site on the Moon and landing site on Earth.

    I am trying to make a script for a scenario, where a vessel is placed on a random set of coordinates on the Moon, on a random date (within 1/1/2000 to 1/1/2050) and select one of the Earth bases at random as the target base. The idea is that everytime I run the scenario, the vessel is placed on...
  18. dgatsoulis

    Challenge So You Think You Can Land?

    It's been a while since my last challenge. For this one, I wanted to get away from the usual tight-ΔV-planning-type of challenge and post one that requires flying skills. It's a visit to a moment that must be one of the most memorable experiences for every Orbinaut: The first unpowered runway...
  19. dgatsoulis

    A fun ride in math-land

    Ok, this was a fun ride and I wanted to share it with you guys. It started with a "simple" question in the OrbiterSDK forum, where I asked how to determine if a vessel is on a runway or outside of it. The solution is trivial for a runway aligned with x and y (East-West or North-South) but what...
  20. dgatsoulis

    LUA How to check if a vessel has landed within a specified rectangular area?

    I am trying to setup a challenge in Lua script, in which the player will have to perform an unpowered landing on a runway. I want to check if the spacecraft touches down within a specified area and then stops within that area (success). If the vessel goes out of the area while it touches the...
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