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Old 07-14-2017, 12:15 AM   #331
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Originally Posted by GLS View Post
 Well, I need to know the aperture (angle) of the light beam:
umbra aperture of inner (maximum intensity) cone
penumbra aperture of outer (zero intensity) cone

We can assume the visible beam in the image refers to the first number, and then we can assume the second number is twice as wide as the first.

The range is very likely bigger than the distance between the light and the vehicle. Maybe estimating that from an onboard view of a night landing is a better ideia.
This from the HUD minicam of STS-115 which was a nightlanding: https://www.dropbox.com/s/8rk8juxlek...nding.jpg?dl=0

Based on some experiments, umbra angle seems to be around 7.8s.

---------- Post added 07-14-17 at 02:15 AM ---------- Previous post was 07-13-17 at 09:34 PM ----------

Could the pad/crawler offset constants in the xenon light header be made scenario adjustable? This is so it be different in each instance of the xenon light vessel as shown in this screenshot of STS-135: https://www.dropbox.com/s/zzfzokqrzl...00581.png?dl=0
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Old 07-17-2017, 12:06 PM   #332
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I added a random vertical offset to the xenon lights, so now they should not point to the same spot, but instead the light should be spread along the "vertical area" of the vehicle.
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