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John Lear Quote:
OK. Please know this. I have been a pilot for almost 50 years. No airman has more FAA certificates than I do. I had over 19,000 hours when I retired in 2001, 16,000 in large jets. I have participated in many crash investigations.
I have built airplanes, I have flown them, I have instructed in them, I have raced them and I have crashed them. The hypothesis that the wings and tail and fuel from a Boeing 757 disintegrated from the high kinectic energy of impact is pure, unadulterated, unmitigated B.S.
Originally posted by darkbluesky
Originally posted by Realtruth
darkbluesky,
Again I know nothing of plane parts, but I know John Lear does and has investigated many plane crashes.
Im curious, how do you come by the knowledge that John Lear has investigated many airplane crashes? Accorording to John himself, he is a pilot not an investigator.
Darkbluesky how many crashes have you actually investigated?
None. And you?
Originally posted by Zaphod58
IF that part was from the main fan disk, then yes it could be the same engine.
Those fan blades are very easily destroyed, or even moved around on the hub. If you stand in front of an engine as it's slowly spinning down the blades slide around on the hub, because they're put on loosely to allow for heat expansion.
Originally posted by johnlear A wheel? A wheel? Are you kidding? Out of 250,000 pounds of airplane allegedly inside the Pentagon you are going to show me a wheel?
Originally posted by johnlearOne thing you and Darkbluesky are going to have to do, if you want to be taken seriously, is to quit refering to compressor and turbine blades as fan blades. The RB-211 has a single stage fan and it is huge. That disk you have a photograph of is from the compressor section and could not possibly be from the 'main fan disk' whatever the heck you think that is. Thanks.
Originally posted by Realtruth
I am also curious how the 757 which wings, tail, fuselage disitegrated on impact and most of the plane, but it made it through more than 9 feet of steel re-enforced concrete to end up in almost a perfectly straight line. And then the planes nose cone punched that perfect little hole?
Originally posted by johnlear
One thing you and Darkbluesky are going to have to do, if you want to be taken seriously, is to quit refering to compressor and turbine blades as fan blades. The RB-211 has a single stage fan and it is huge. That disk you have a photograph of is from the compressor section and could not possibly be from the 'main fan disk' whatever the heck you think that is. Thanks.
Originally posted by johnlear
Maybe this is was made by one of darkblueskys 'main fan disks'?
The Pentagon is in the midst of a major renovation program (see “The Pentagon Project,” Civil Engineering, June 2001), and the work is phased in five “wedges.” Each wedge is centered on a building vertex and consists of the portion of the building between the midpoint of adjacent sides. Structurally, the renovation is not major; the most significant changes are the addition of new elevators, stairs, escalators, and mechanical equipment rooms. Additionally, the exterior walls and windows are being upgraded to provide a measure of resistance to external blasts. The renovation of Wedge 1 was essentially complete at the time of the September 11 attack.
Originally posted by Zaphod58
So, all those times I saw them changing fan blades I was hallucinating? And all those times I heard the blades clanking as it was slowly spinning, and they were shifting I was imagining it? Thanks for clearing that up for me!
IF that part was from the main fan disk, then yes it could be the same engine. Those fan blades are very easily destroyed, or even moved around on the hub. If you stand in front of an engine as it's slowly spinning down the blades slide around on the hub, because they're put on loosely to allow for heat expansion.
I'd hardly call the RB211 "huge" in any way. The entire engine diameter of the RB211 is 6 feet.
Originally posted by Zaphod58
One thing you guys might want to do, if you want to be taken seriously, is some basic research on the construction of the Pentagon. It was ONE steel reinforced concrete wall, the rest of which were ordinary walls. The only wall that was reinforced was the outer wall, where it would be possible to place a truck bomb almost against the building. The inner courtyard was considered an interior wall, with limited or no vehicle access, so wasn't reinforced. The interior walls were simply standard drywall and unreinforced concrete.
Originally posted by darkbluesky
And anyone who cannot see the curved section of aircraft cockpit structure in that picture, just doesn't want to see it, and never will. However they will continue to see conspiracies and betrayal behind very tree.
Originally posted by johnlear
"Fan blades are easily destroyed", Zaphod58? Are you kidding? The fan section is the engines first line of defense. Easily destroyed my foot! Those blades have to take projectiles fired at over 400 mph while running at full thrust!
Originally posted by Zaphod58
They're not going to reinforce one wall? Then why do the engineers that were involved in the Pentagon renovation talk about ONLY the exterior wall and window being reinforced during the renovation? If they were going to reinforce EVERY WALL in the building they'd have to tear it down and rebuild the whole building essentially. Why would they reinforce the interior walls? The outer wall was supposed to be able to withstand a truck bomb going off almost touching the wall, so what would be the point of reinforcing the interior walls? And even if they DID reinforce the inner courtyard, that's still only TWO walls you're talking about.
Originally posted by Zaphod58
They're not going to reinforce one wall? Then why do the engineers that were involved in the Pentagon renovation talk about ONLY the exterior wall and window being reinforced during the renovation? If they were going to reinforce EVERY WALL in the building they'd have to tear it down and rebuild the whole building essentially. Why would they reinforce the interior walls? The outer wall was supposed to be able to withstand a truck bomb going off almost touching the wall, so what would be the point of reinforcing the interior walls? And even if they DID reinforce the inner courtyard, that's still only TWO walls you're talking about.
Then please tell me why it is that a ROCK can cause an engine to FOD out. Or how a ROCK can bend a fan blade so badly that you have to replace the entire blade. If engines weren't relatively fragile, why do you see sailors on carriers doing FOD walks before air ops daily. Or sweepers constantly sweeping flightlines on USAF bases for rocks, and bits of metal that can destroy an engine.
Originally posted by darkbluesky
John, A couple of things you need to do if you want to be taken seriously:
1. Be able to discriminate between an engine component and a "wheel".
2. Stop telling people the moon has an atmosphere
was mined by aliens with colosal equipment
and possesses a "soul catcher".
Your record as an aviator and world traveller are impressive. You discredit your reputation by selling these cheap fantastic notions to the gullible.
Originally posted by johnlearWhen I am not doing 'honey do' projects around this friggin' house I am up at the mine where the nearest person is 46 miles away. The turkey buzzards and rabbits just think I'm nuts. They don't know anything about the soul catcher though and I don't plan to tell them.