Rosch taking orders on OU Bouyancy device.

[MileHigh]

Where is James Kwok when you need him?!!   lol

[TinselKoala]

Tinman, you are simply wrong about the speeds of a 767 aircraft. I see that you have now changed your "speed limit" from the previously stated "220" maximum, though.


Vmo is the maximum _allowable_ speed, Va is the "maneuvering speed". The airplane will not "come apart" if you exceed Vmo, though, as long as you are gentle on the controls and don't hit much turbulence. There is considerable design margin built in to the Vmo speed limit.  If you don't care about those things you can easily exceed Vmo in level flight, even at sea level. The 767 is powerful enough to take off fully loaded _on one engine_. It is easily powerful enough to exceed Vmo at sea level in level flight, and do it without "coming apart."

See the graph below, of Vmo vs. altitude for the 767 series.

You may find the following article of interest:
https://www.metabunk.org/threads/debunked-the-role-of-aeroelastic-flutter-in-the-events-of-9-11.3359/

[Farmhand]

I believe a Chinese pilot committing suicide flipped the airliner he was piloting upside down and performed an upside down pull up maneuver which he controlled all the way to the ground where the plane dove almost vertically into a river at over Mach 1 pretty much intact. No doubt it would have lost some bits but he did it, he was a Air Force show pilot bankrupted by the financial crash so he crashed for real and on purpose and in some kind of control.

How many knots is Mach 1 ? 661 Knots equals Mach 1.

.

[MileHigh]

TK is very knowledgeable when it comes to aviation.

I remember seeing these huge aluminum slabs get cut by a giant NC machine to form the main wing members  (sorry no vocabulary for this stuff.)   It was very impressive to see.

[Farmhand]

The old war pilots told of overspeed events in their old spitfires and Hurricanes and so forth, the problem was that the faster they went the harder it became to effect any control surface movements, well before any parts came off the planes, this prevented them from pulling out of attacking dives if they dove too long and gained too much speed. The plane then becomes kind of like a plain old rocket but only powered by an ICE. No control. But with fly by wire now that becomes either the hydraulics refuse to exert the force required or the force is exerted and the surfaces get damaged or torn off.

the plane would want to keep going in it's native trim in relation to its orientation to the ground.

..