http://perso.wanadoo.fr/ericbart/"Few people know about bombs. Pierre-Henri Bunel is a french artillery army officer. During the 1991 Gulf war, the allies used his expertise to help evaluate the damages caused by missiles. He wrote a chapter on bombs and missiles in Le Pentagate.
When an explosive is ignited it decomposes itself in heat, light and huge volume of gaseous compounds. Because this expansion is very rapid, the expanding gasses displace large volumes of air creating a shockwave and a forceful gust of wind : a blast.
For 'high explosives', the shockwave occurs at supersonic speed, forcing the water steam in the air to condense instantly, thus creating a sudden white cloud or white flash. This colour may change to light yellow or light orange but the flash is always sudden and brief. The fireball follows later at a slower speed.
Jet fuel cannot burn without large quantities of air. It only explodes when carefully mixed with air. Otherwise it just burns in dark orange flames like in the WTC 9/11 attacks.
Normal explosives disperse their gaseous compounds in all directions. Shaped-charge explosives (1 2) concentrate their gases in a single direction, making them more powerful. Metal may be added to the explosive charge to increase its 'cutting power'. Shaped charges are used for piercing rocks in the oil-drilling industry or for piercing tanks and bunkers in the army. High explosives create huge heat and huge forces. Shaped charges are even more destructive.
Pierre-Henri Bunel thinks that the Pentagon attack was made with an anti-bunker missile. An anti-bunker missile contains both a shapped charge and a bomb. It first used the shaped-charge to pierce the wall and then dropped a bomb inside the bunker.
Shaped charge explosion
Missile
Pierre-Henri Bunel explains that a missile is programmed for a precise trajectory. Once it arrives near its target, it slows down and tilts its wings to slide laterally and vertically on its exact final fly path. When on its exact trajectory, it hit full gas to get the maximum speed power for the impact.
"He tilted his wings, this way and in this way (Ryan mimics) that happened concurrently with the engines going down. And then straighten up in sort of suddenly and hit full gas. (Ryan mimics)" Ryan James (Video available)
"It was tilting its wings up and down like it was trying to balance" Afework Hagos
"The jet accelerated in the final few hundred yards" William Middleton Sr
White flash
Remember that the white flash is like a sudden white cloud preceding a slower fireball. It's water steam condensed by the shockwave. The colour of this sudden flash may vary, white, light yellow or light orange. As the shockwave is like a sound wave, it does not displace matter, it's a travelling high pressure that can get through air, through matter, through walls. Thus a white flash can occur behind a standing wall.
"I saw the flash and subsequent fireball" Terry Morin
There was a silvery flash, an explosion, and... " James S Robbins
The fireball was coming like a wind-cloud of smoke trailing it" Victor Correa. The "smoke " is the white flash (i.e. water steam) that appeared before the fireball. This gave the strange impression that "smoke" appeared before the fire. See this video
"the room filled with this real bright light, just like everything was encompassed within this bright light" Michael Beans. The flash got through the walls.
White flash
Shaped charges
Pierre-Henri Bunel explains that the punched out hole was more likely caused by a shaped charge jet stream. Hot plasma jet streams are designed to pierce concrete, they go far inside the building and end up in winds, smokes and heat.
Because it was supposedly found a nose gear there, it was considered as a proof that the plane's nose made this hole. It is more likely that this gear wheel rim rolled there, pushed or drawn by the above jet streams.
In any case the wheel rim did not make such a big hole. Where are the plane parts that broke this wall ? These parts should be visible in the A-E drive and even damage the next wal : the B ring wall.
Nope. The next wall is intact. No damage. Only some smoke spot waiting to be washed. Finally, it seems that no solid matter made this hole. It was made by the forceful pressure of hot gases and smokes. This is much more consistent with shaped charge explosions.
The shaped charges were ignited before the nose touched the wall. That's why some witnesses reported signs of an early impact, before the plane touched the wall :
"It seemed like it made impact just before the wedge" Joe Harrington
"I heard a sonic boom and then the impact" Joel Sucherman
Other witnesses understood that the plane hit the ground before the wall :
"It didn't appear to crash into the building, most of the energy was dissipated in hitting the ground, I saw the nose break up, I saw the wings fly forward" Donald "Tim" Timmerman
"The fuselage hit the ground and blew up" Mary Ann Owens
"The nose of the plane curled upwards and crumpled before exploding into a massive fireball" Vin Narayan
But there was no mark of the plane on the ground. Other witnesses reported an impact on the building :
"The large aircraft struck the outermost corridor (E-ring) of the five-ring building at ground level (the second floor)" Aviationnow
"The aircraft went in between the second and third floors." Lincoln Leibner
Why did some witnesses thought that the plane hit the ground before the wall ? I see two reasons. First, the explosion of the charges created white flashes around the fuselage that seemed an early contact with the ground. Second, shaped charges in a plane have a recoil effect like powder in guns. Their explosions should have push back the fuselage and slow it down, giving the impression that it hit something. It could also make the wings detached and fly forward because, unlike the fuselage, they were not slowed down, "I saw the wings fly forward".
The Penny Elgas statement : "At the point where the fuselage hit the wall, it seemed to simply melt into the building. I saw a smoke ring surround the fuselage as it made contact with the wall. It appeared as a smoke ring that encircled the fuselage at the point of contact and it seemed to be several feet thick. I later realized that it was probably the rubble of churning bits of the plane and concrete. The churning smoke ring started at the top of the fuselage and simultaneously wrapped down both the right and left sides of the fuselage to the underside, where the coiling rings crossed over each other and then coiled back up to the top. Then it started over again -- only this next time, I also saw fire, glowing fire in the smoke ring."
The analysis of this report is complex. However I'll try here.
First I believe Penny Elgas. Under adrenaline things go definetly slower. The report she gave is so unexpected that I don't think she made it up. It's just a pure factual report.
The interpretation she gave is false. : "the rubble of churning bits of the plane and concrete". The smoke moves are too perfect.
My speculation : The "churning smoke" is the white flash of inside charges. Penny Elgas saw the white flashes of these charges exploding in two overlapped and opposite helices.
There was not a single large shaped charge in the plane. I did not see any large shaped charge on the web. The best anti-bunker weapon (BLU-113) is only 1.2 foot large (diameter). Instead, there were many shaped charges (one feet diameter) inside the plane. Roughly, a one foot diameter will make a one foot hole. These charges were arranged in circle inside the fuselage and along the fuselage. Thus it was possible to make a large hit on the wall with small shaped charges. These charges were not fired all at the same time (probably to be more silent or for having a "hammering" effect on concrete). So what is the best sequence for igniting all theses charges ?
Maybe things are simpler then I first thought. All the plane (fuselage and wings) is laid on a rigid structure. This means that the bottom of the fuselage is strong and the top is fragile. So, when a charge explode near the bottom of the fuselage, it destroys the stiffness of it.
I think that the charges where put in two overlapped and opposite helices (clockwise and counter clockwise). The explosion started at the top front of the fuselage, continued downward and backward on each side, joined at the bottom and continued upward and backward, and so on ..., as Penny saw.
When explosions occure at the bottom, the plane fuselage stiffness is damaged. Thus, next charges to explode are less strongly tied to the fuselage. The further they are from the bottom, the more difficult it is to tie them strongly to the fuselage. Thus, next charges have to be attached close to the bottom. That's why I think it continued upward (and backward) on each side of the fuselage, because next charges can't be mechanically attached far form the bottom.
"Then it started over again -- only this next time, I also saw fire, glowing fire in the smoke ring." The glowing fire is the fireball itself that comes after the white flash.
Shaped charges in the NYC Flight 11
There was a white flash just before flight 11 crashed in the north WTC tower. See this "Incredible 9-11 Evidence We've All been Overlooking". See this flash just before the plane crash. You may even check it on your own DVD player.
This flash is too big to be sparks, see the real small sparks in the flight 175 crash (picture, shockwave from thewebfairy). It's not a video recorder aberration, to few chances. Maybe it's a sun reflection amplified by an optical aberration but I think it will be difficult to find the mirror. On this morning, the sun was low above the horizon in the left.
Maybe this plane was not flight 11. Albeit it seems very difficult to exchange flight 11 with a plane bomb, some authors argue this was possible (Plissken, Dewdney).
This flash could well be the same shaped charges described above and summed up by the Pentagon witness Penny Elgas : "I saw a smoke ring surround the fuselage as it made contact with the wall."