Hello everybody,
so then let's go to the
LO2 Umbilical, which can be seen from behind especially in the zoom in all its beauty.
Source: NASA
Observing from the front, it is noticeable that at the
LO2 Feedline there is still this special
Support, which is rather thin and sits directly below the
LH2 Cable Tray on the
Crossbeam.
Or maybe it's a part of the
TPS Cladding of the Umbilical.
Source: forum.nasaspaceflight.com (DDG40)
For the further separate construction of the
ET/Orbiter Attachment, I have considered that it would be better to cut off the
LO2 Feedline at this point and to glue the back bow with the
LO2 Umbilical plate between the two
Support Brackets and then to glue the thin support onto the front end of the bow. Then the other
Support/TPS parts and the
LO2 Cable Tray as well as the end of
GO2 Press. Line will be installed.
The front part of the
Feedline is too short anyway and has to be extended up to the
Fairing on the
Intertank.
And only after the
Flour coating process and painting of the
ET all lines including the
Ice Frost/PAL Ramps as well as the complete
ET/Orbiter Attachment will be installed on the tank.
Before cutting through the
Feedline I first had to find out the geometry and the dimensions of the
Support-Plate, which was not that easy, because the parts are only temporarily attached.
With the measured distance between
Feedline and
Cable Tray of approx. 2 mm I drew this little sketch,
which I then transfered to
Styrene (0,5 mm),
then it was punched out with the
Chisel-cutter,
which then was sanded.
And this is how the test fitting looks on a
Feedline dummy (Ø 3 mm).
That's it then again, next follows the separation of the
Feedline and the test fitting of the bow.