Took a stroll over to the Asylum today (ATS is the Asylum, while JREF is the Cesspool for those wondering), they're really piling it on for something in which they consider "nuts". Hmmm... wonder why that is.... lol
Anyway, as expected, it's the blind leading the blind. Proudbird/Weedy is still trying to flex his aeronautical knowledge, but as usual, falling flat on his face as he did when he posted videos of aircraft flying "fast" within their flight envelope as a comparison to aircraft flying Vmo+150 (hilarious) and then claiming Vne is the same as Vmo. The list of comedy gold spouted by Proudbird/Weedy continues... but it's good to see they now realize the V-G diagram is accurate, as clearly they aren't able to come up with one of their own.
I'll skip most of the rhetoric and poor attempts at character assassination as that is really all they have left.... but allow me to respond to his post which he thinks will get deleted if posted here.... this won't take long...
Dutch roll -
They are correct that Dutch Roll is not a problem within the flight envelope. This is yet another reason manufacturers set a Vmo/Mmo.
What happens as aircraft speed increases? It's in his own source...
The amount of deflection of the rudder panel by the yaw damper is reduced at high speed to avoid potential over-stressing of the airframe.
In other words, the deflection of the rudder panel(s) is increasingly limited the faster you go so you don't rip the thing off the airframe. Again, just another one of the many reasons manufacturers set a Vmo. Exceeding Vmo by such a wide margin, how exactly is it going to dampen dutch roll with an already limited rudder? Perhaps the rudder panels are no longer limited above Vmo? Then they will have this
problem (which happened at Departure speeds).
This is why Dan Govatos, an FAA Check Airman, along with his line pilots, were experiencing Dutch Roll tendencies in the simulator
at High speeds, but were able to hit the buildings at near landing speeds. The high speeds were too fast with a limited rudder that was no longer effective in reducing dutch roll.
Once again, Proudbird/Weedy screws the pooch. The very reason he will NEVER put his name to his claims.
Mach Tuck -
Again, ProudBird/Weedwhacker is attempting to argue conditions of an aircraft flying within their flight envelope as compared to an aircraft reportedly operating way outside it's limitations.
From his own source -
As you probably know, the reason an aircraft would need a mach speed trim device is because the wing center of pressure (Cp) moves aft at transonic speeds, usually starting at about Mach 0.6 or 0.7. As the Cp moves aft, the moment arm between it and the elevator decreases making the elevator less effective in providing pitch control. The difference in location between the Cp and the center of gravity (located in front of the Cp) causes the aircraft nose to pitch down, so more elevator trim is required to keep the aircraft level.
We won't get too technical here as it will only confuse people like Proudbird/Weedy, but 0.7 Mach at say 22,000 feet, is the equivalent of 301 knots at Sea Level. Well within the envelope and the range for Mach speed trim.
510 knots at Sea Level (the speed reported for the South Tower Airplane
) is the equivalent of Mach 1.19 at 22,000 feet.
People can calculate it themselves here.http://www.luizmonteiro.com/Altimetry.aspx...ivalentAirspeed
Put 22,000 into pressure altitude
Put -29 into the C window (22,000 feet based on standard adiabatic rate)
Put 510 in Equivalent Airspeed window.
Click Eval on True Airspeed window
Read Mach number on shaded windows below...
Again, I guess ProudBird/Weedy should inform Boeing to change their 767-200 model number to the Boeing 767-200SST since apparently it can operate in conditions equivalent to Mach 1.19, according to people like Proudbird/Weedwhacker.
I also noticed Proudbird/Weedwhacker is claiming he came here for debate. Well, we do not have a "Proudbird" registered here, but we do have a "weedwhacker" who registered here, but the weedwhacker from ATS claims that wasn't him (but it really was)
Proudbird/Weedy caught in more lies. What a tangled web he weaves...
You're getting slow old man. They need to get new blood in there to replace you.
Anytime you wish to come on over and have a real debate, feel free to do so Proudbird/Weedy. Then I'll teach you how transonic ranges have equivalent airspeed's at sea level and why the IAS Vmo pointer slides to lower airspeed's during climb. It must feel pretty lonely being stuck in such a small clown car of a thread over there at ATS, especially with a belligerent drunk bigot like Retreat, while we get 5000-15,000 views per day of our work, and that's just on our website (doesn't include things like videos on youtube, facebook pages... etc).
Now with that said, I bet that if this post is posted at ATS, it WILL get deleted as "Off-topic". Funny how they accuse us of deleting posts, when ATS
is the mecca
of deleted posts