Hello everybody,
after we have meanwhile decided a separate power supply for the
Crawler lighting by means of three built-in
9V Batteries, the
analysis and inventory of the lamps located on the crawler is now the next step for the definition of the corresponding
LED switching circuits, which, however, should become a bit difficult, since there are almost no photos from the
STS-6 in which one can see the illuminated crawler.
Only on this photo during
Challenger's rollout (11/30/1982) from the VAB one can see the crawler, on the front of which (
Side 1) one can see
8 lamps, at least something!
Source: forum.nasaspaceflight.com (jacqmans)
Of this rollout there is also the following
Video, on which unfortunately a lot was disappearing in the fog ...
Therin in a few short sequences, like this one, one can make out a few lamps, but the position of which can only be guessed.
Photos from later missions, like here from the
STS-132,
Source: live.staticflickr.com (Ben Cooper)
or here from
Endeavour's rollout to her last mission
STS-134 are helpful, but there are a number of lamps there which were not yet present on the crawler during
STS-6, which must be taken into account when taking stock of the lamps.
Source: live.staticflickr.com (Ben Cooper)
Therefore, I firstly had to orientate myself on images from subsequent missions, such as this one during the
Challenger rollout, STS-8 (30/08/1983), on which one can see the
back (Side 3) of the crawler.
Source: forum.nasaspaceflight.com
This photo of the
STS-28 (1989) is quite suitable for the analysis, on which one can even see some lamps on the inner sides of the
Trucks.
Source: flickr.com/photos/nasacommons
The difficulty with the inventory is now to disregard those lamps in the counting that did not yet exist during
STS-6, such as these ones during
STS-134.
These are
Fluorescent tubes, which are located immediately in front of and behind each of the
8 Trucks, which are mounted at elongated
Lubrication Jigs for lubricating of the truck chains, as one can see in this image.
Source: NASA
As one can see in this image during the
STS-28, these lubrication jigs were already present on the
STS-6 Crawler, but the fluorescent tubes weren't still there, because they were just retrofitted later.
The exact inventory of the lamps will follow in the next step.
