Citat:
Ursprungligen postat av
estone
Det kanske är så att i smedjor tillför man massor av syre.....Samt använder bra kol. Nej, detta vore något unikt. Samt att man ser rinnande metall innan husen rasar.
Oj då var vi tillbaks där igen..
Den rinnande metallen innan WTC2 rasar var alltså aluminium (mestadels från flygplanskroppen). Aluminium smälter vid 660,3°C till skillnad från stål som smälter runt 1150-1550 grader. Det var helt enkelt inte tillräckligt hett för att smälta stål, men tillräckligt hett för aluminium (som alltså smälter vid ungefär halva temperaturen).
Och ja, i smedjor tillför man syre med en bälg, å andra sidan har man inte gummi, oljor, plaster, allsköns annan bråte etc att elda med i smedjor.. Å tredje sidan har vi inte ens sett något smält stål än vad jag vet...
NIST reported (NIST NCSTAR 1-5A) that just before 9:52 a.m., a bright spot appeared at the top of a window on the 80th floor of WTC 2, four windows removed from the east edge on the north face, followed by the flow of a glowing liquid. This flow lasted approximately four seconds before subsiding. Many such liquid flows were observed from near this location in the seven minutes leading up to the collapse of this tower. There is no evidence of similar molten liquid pouring out from another location in WTC 2 or from anywhere within WTC 1.
Photographs, as well as NIST simulations of the aircraft impact, show large piles of debris in the 80th and 81st floors of WTC 2 near the site where the glowing liquid eventually appeared. Much of this debris came from the aircraft itself and from the office furnishings that the aircraft pushed forward as it tunneled to this far end of the building. Large fires developed on these piles shortly after the aircraft impact and continued to burn in the area until the tower collapsed.
NIST concluded that the source of the molten material was aluminum alloys from the aircraft, since these are known to melt between 475 degrees Celsius (900 degrees Fahrenheit) and 640 degrees Celsius (1,200 degrees Fahrenheit)—depending on the particular alloy—well below the expected temperatures (about 1,000 degrees Celsius or 1,800 degrees Fahrenheit) in the vicinity of the fires. Aluminum is not expected to ignite at normal fire temperatures and there is no visual indication that the material flowing from the tower was burning.