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Arrow Dawn
by OrbitHangar 12-19-2017, 04:26 PM

Author: brianj

The Dawn spacecraft, NASA's science mission to investigate the formation of the solar system by studying two of the largest asteroids Vesta and Ceres. Uses low-thrust high-efficiency Ion propulsion. Installation and operation notes in /Doc/Dawn/dawn_readme.


Launch scenario requires "Delta2 and SLC17" add-on:


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Old 07-06-2019, 05:39 AM   #2
Default Another Quality Spacecraft

Thanks Brian.

Beautiful graphics and detail to covers and panels.
fatcat is offline   Reply With Quote
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Old 07-08-2019, 05:16 PM   #3

Hey Brian,
thanks for this beautiful vessel (a late discovery for me however).
I was just re-compiling it for Orbiter BETA as that is my main installation.

But then I wondered about the High Gain Antenna: Are you sure that there is a cover over the dish?
Many images prior to closing the Delta II fairings show it, but these images also show many other covers still attached (e.g. the ion drives are covered & some "red flags" / "remove before flight" items).
Renderings of Dawn in space usually don't show any cover over the dish. So I was wondering about this.
Do you have any definitive information on that? Or do you possibly have a mesh "without the HGA cover"?

kuddel is offline   Reply With Quote
Old 07-09-2019, 11:42 AM   #4
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no, I'm not sure about the HGA cover. The "artist impression" images show both cover on and off. Maybe someone who knows about these things can clarify? I don't actually have a mesh with the cover off.

As ever, Low-Thrust trajectory planning is not particularly easy in Orbiter.
I never had much success with Piper's Low Thrust Trajectory Planner (LTTP), I'm probably not using it right. So I usually use IMFD DeltaVelocity. I'm interested to hear how other people do it.

I completed Hayabusa and Dawn missions, but Hayabusa II has so far baffled me!

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