RainmanTime
Super Moderator
Yes, I did, because isn't it obvious that these questions are smack-dab in my area of expertise? I figured ruthless would answer them, but to avoid you refuting him with "but you are not an airline pilot" I figured I would chime in too. BTW, again I point out it is comments like this that cause people to think you are harping on them, and they will then harp right back!Great, now your answering my replies to others...
Yes, you have. And the fact you have makes it seem even that more "snide" that you would point this out. If you are really honest about having those questions answered, then I would think you would be HAPPY to see an expert in aircraft answer them....right?Still, I've done it myself.
Patience, please. Did I not promise I would? Answering these questions will require me to download some of those pics and mark some of them up to highlight my point. That takes a bit more time than simply typing a reply... and I do have other things to get done in my life. So there is plenty of time over the weekend. I will get to each of them, as long as you will be just as honest in accepting that the answers are AT LEAST plausible, if not highly probable.But could you answer my questions I really REALLY want answered some time?
I can lead you through the calculations for this as well, but I will wait until after I handle the other questions first. But in the meantime I hope you understand that the "320 degrees" refers to its change in heading? In other words, if it had turned 360 degrees it would have done one complete turn. I want to end this reply with a reference to a piloting technique known as the "two-minute turn". It is called this because under nominal conditions (not heavy manuever g's) ALL AIRPLANES can complete a 360 degree turn in 2 minutes.... with MUCH less than even 1.5 g's. Here is the reference:The following is the best source I could find. With your backround I was hopeing you could tell me how to calculate the Gs of flight 77 in this reported artical. The degree of the spiral I read somewhere was approx 320 degrees.
<font color="red"> Radar data shows Flight 77 crossing the Capitol Beltway and headed toward the Pentagon. However, the plane, flying more than 400 mph, is too high when it nears the Pentagon at 9:35 a.m., crossing the Pentagon at about 7,000 feet up. [CBS News, 9/21/2001; Boston Globe, 11/23/2001] The plane then makes a difficult high-speed descending turn. It makes a “downward spiral, turning almost a complete circle and dropping the last 7,000 feet in two-and-a-half minutes. [/COLOR]
http://www.flightsimbooks.com/copilot/page19.php
And here is the quote:
I'm demonstrating a standard two-minute turn, the turn you'll virtually always use when flying IFR (Instrument Flight Rules, which means there is weather up there and you had better know what you are doing if you get into it). You will also use this kind of turn when flying an ILS approach, as well as in everyday flying when you want to make a nice leisurely turn. It's also called a “standard-rate turn.â€
“Two-minute turn†means that with this bank (averaging approximately 20 degrees) it will take your aircraft approximately two minutes to turn 360 degrees and, of course, one minute to reverse direction. We call the latter “doing a 180†for obvious reasons. The 180 is a very useful maneuver, for example: If you took off and flew a few miles and then remembered you left your briefcase in the hangar—or even worse, your lunch.
So given the above, now look at the quote you provided about AA 77's maneuver before it hit the Pentagon... It took two AND A HALF minutes to complete NOT EVEN a full 360 turn!!!! Logic and math tells us that this is SLOWER than a "standard rate turn" (two-minute turn), which means it is LESS AGGRESSIVE than a two-minute turn. And I can also assure you that because this guy did a maneuver that was even more gentle than a standard-rate turn, there is absolutely NO TRUTH in the statement that it was " <font color="red"> a difficult high-speed descending turn [/COLOR]. " That is just BS. And as I said, I will run you through the calcs for the g-levels involved, but after I address your other questions on the photos.
RMT