Dr. G wrote:Femr2 + Newton:
The starboard side of the fuselage of UAL 175 missed the core columns of WTC 2
How do you know this ? NIST 'guesstimate', based on the impact orientation 'guesstimates' ? (I also suggest terming as 'Flight 175')
so I suggest it is quite probable that the cabin O2 cylinder survived the crash.
Even 'if' the O2 cylinder missed the core columns, why would it survive every other impact it would be subjected to in the crash zone ?
Besides, arguments from incredulity are not very convincing.
I'm not sure what you mean here. Could you elaborate ?
Also I am not convinced that the impact angle was zero degrees.
It is clear that the impact angle was near 0 degrees. Perhaps not 'exact', but a lot closer to zero than the 6 degree +-2 vertical, 15 degree +-2 horizontal chosen by NIST. I have begun rendering of accurate scaled models to highlight the discrepancies between aircraft orientation suggested by NIST and video of the actual event, and will update the other thread as and when:

The engines do not appear to impact the south face at the same instant.
Not 'exactly', but the image above should raise a few alarm bells.
I would also ask what are your error bars on "zero degrees"? I would guess at least +/- 2 degrees .....
You will have to ask peterene that question I;m afraid, as he performed the initial study. As I have indicated, I'm also looking at the impact orientation, from a different calculation perspective, so if the results match up there should be greater acceptance. I'll be able to provide margins of error only when I've completed by own study.
I should highlight that the NIST figures are all +-2 degrees for some reason, though why the error is so large given available footage it a bit, odd.
It should also be considered what a 2 degree difference to all impact axes would have on the initial assertion that the CO2 cyclinder did not impact a core column.