Purdue University has recently released a computer generated animation showing the second aircraft involved in the 9/11 Twin Towers incident. It attempts to show the kind of damage that the airplane would have caused as it travelled through the tower. Don't expect anymore than that. Maybe the hope is that we will watch it and convince ourselves that the damage suggested was enough to bring down the towers.
The University took experience from the work done back in 2002 on what happened at the Pentagon, and this is a computer generated image from that time. It leaves more questions than it answers. The initial damage seen at the Pentagon was a 16' diameter hole at ground level, presumably made by the nose of the airplane as it entered the building. The image to the right would put the entry hole further up the building than actual pictures of the day showed. The building did not collapse, as shown in the next picture taken on the day, until almost an hour and a half after the initial impact.
The engines would have left some kind of trail across the lawn, but they did not. The lawn was as pristine after the event as it was before. So why did trucks come in and dump gravel all over the lawn? What was being hidden? One obvious thing missing from any pictures taken on the day is airplane wreckage.
Purdue, what are you trying to tell us? Is the purpose of your computer generated images to re-enforce the 'official' line, are you trying to tell us something else, or just hedging your bets on whatever truth is finally revealed at some point in the future?