The fuel cells are in the wings. Destroying those at the speed necessary to destroy those aircraft more than meets the criteria for the fuel to be dispersed so quickly that it would vaporize and ignite at the temperature of the now exposed temperatures if the combustion chambers. Instantly igniting anything that the fuel comes in contact with. As well as a magnesium fire from the wheels burning their way floor to floor, instantly igniting anything on any given floor they touch. Those fires would then travel down the elevator shafts, or up through. Include in this all the fire sucking air in from all the open windows now due the aircraft, and you have a nightmare scenario anyone living at the time is not likely to witness again. The only way to find out what happened, n how hot it got would be to rebuild the fuckers in the desert, put similar materials in all the floors and literally fly two more aircraft, during similar conditions weather wise, and watch what happens.
Effects of high temperatures on steel https://vertexeng.com/insights/fire-how-it-affects-structural-steel-framing/
Temperatures necessary to melt steel. https://weldinginfocenter.com/oxyacetylene-torch/
Average internal temperature of a jet engine combustion chamber. https://cs.stanford.edu/people/eroberts/courses/ww2/projects/jet-airplanes/how.html
The fuel cells are in the wings. Destroying those at the speed necessary to destroy those aircraft more than meets the criteria for the fuel to be dispersed so quickly that it would vaporize and ignite at the temperature of the now exposed temperatures if the combustion chambers. Instantly igniting anything that the fuel comes in contact with. As well as a magnesium fire from the wheels burning their way floor to floor, instantly igniting anything on any given floor they touch. Those fires would then travel down the elevator shafts, or up through. Include in this all the fire sucking air in from all the open windows now due the aircraft, and you have a nightmare scenario anyone living at the time is not likely to witness again. The only way to find out what happened, n how hot it got would be to rebuild the fuckers in the desert, put similar materials in all the floors and literally fly two more aircraft, during similar conditions weather wise, and watch what happens.