Recent content by ghrasko

Well, I guess, I found it in the doc: Thrust: 2 x 1.6·10^5 N (main engines) Isp: 4·104 m/s (fuel-specific impulse in vacuum) Anyhow, has anyone calculated such values with GMAT and checked it in Orbiter? If I understand correctly, this ISP is in m/sec and in GMAT it is in sec. If I call the...

Hi, I am checking how could I combine mission planning in GMAT with Orbiter. As a simple example, I would like to plan a Hohmann transfer from LEO to a higher orbit. I planned the scenarion in GMAT both with ImpulsiveBurn and FiniteBurn steps. The more realistic is the FiniteBurn based...

I find useful information here in the help doc: orbiter/Html/Main/Script/mtd_vessel.htm Based on that I can ask for relative position: orion = vessel.get_interface('orion') href=oapi.get_objhandle('moon') glob = orion:get_globalpos(href) equ = oapi.global_to_equ(moon,glob) term.out(equ.rad) )...

I am trying to continuously record (and use) the position relative to the Moon in a scenario, where the gravity effect of the Earth and the Sun is not negligible (Distant Retrograde Orbit - DRO). In this situation I can still follow the orbit parameters relative to the Moon and to the Earth on...

Thanks @kuddel. The existing docs and the present LUA interpreter code on GitHub provides enough information as I see now. My main proble is what I had detailed a bit above, that it seems only a kind of "general" orbit data are available, not the ones displayed in the MFDs, where one could...

My problem that I try to solve: I am trying to set up a Distance Retrograde orbit (DRO) cca. 70 000 km around the Moon as the Orion capsule did it recently. It is a multiple body situation, where both the Moon and the Earth is effecting the capsule. I try to monitor the distance to the Moon...

Yes, thanks. However, I cannot find info about <vessel>:get_elementsex() function. I found it in the Lua script interpreter code on GutHub. That writes that it returns info regarding the main gravity source. I would like to read the orbit data from one of the MFD-s in the DeltaGlider that is set...

I think, I can reverse engineer this. It is quite well documented. This is the code of the LUA interpreter: https://github.com/orbitersim/orbiter/tree/main/Src/Module/LuaScript/LuaInterpreter

Thanks, this is good, but only if I plan to program in C++. I am looking for the API description for LUA programming. This type: orion = vessel.get_interface('orion') el,op = orion:get_elementsex() TimeToPeriapsis=op.PeT

Hi, could you please recommend me some good Orbiter API and LUA documents? I specifically would like to access the MDF of the Delta Glider. I have found some ad-hoc examples that works, but not a complete documentation.

Indeed, thanks. I will check.

Hi, I would like to visualize the recorded flight path on a top-down Earth-Moon projection. Is there any tool for that? Can I use the recording function and get the position data? I could not find that data and some format description. Gabor

Well, so far I had failed to figure out, how could I define the proper speed vector once I had positioned the spaceship beypnd the L2 point (70 000 km from Moon). The space vector should lay on the Moon - Earth orbital plane and that is not a reference frame option. I think, I should calculate a...

Wow, sure, I am stupid! This is why Orbiter is a brilliant tool to learn. Thanks.

I am returning back to Orbiter for a very long break and should re-learn a lot of things. Now I try to re-create the distant retrograde orbit (DRO) of Artemis-1 Orbiter when they had filmed Earth eclipsed by Moon as you can see it here Moon eclipses Earth. I use Orbiter 2016 on Windows 10. I try...