Boeing 767 Low-altitude Top Speed Options

[Guest_Ningen_*]

Does anyone know how fast a Boeing 767 can fly at low altitude? The top speed at cruising altitude is over 500 mph, but I've heard the following about flight at 700 feet altitude:

The power plant will max out at 330 mph.

The plane will begin to shake itself apart at over 220 mph.

At 700 feet altitude, the air is so thick that if you go too fast you max the rotation of the turbines, the engines can't suck in air, and the engine starts acting as a brake.

Does this make sense?

Where could I get more detailed information about flight limitations (or whatever you call it) of the Boeing 767?

Thank you.

This post has been edited by Ningen: Sep 2 2007, 04:19 AM

[Seatnineb]

one thing is for sure....a 767 incurs aerodynamic stress after 360 knots......


(IMG:http://edit.81x.com/Authors/TruthExplosion/exccess767.jpg)
How Airliners fly
Page 59
By Julien Evans(767 pilot)
(1999)
(IMG:http://ecx.images-amazon.com/images/I/51Y94E5XCCL._SL500_AA240_.jpg)


....yet the plane that hit WTC2 was flying at:


a speed of about 590 mph into the south side of the South Tower of the World Trade Center, crashing through the 77th and 85th floors. By this time, several media organizations are covering the first plane crash and millions see the impact live.
http://channel.nationalgeographic.com/channel/inside911 ...


According to this web site:
http://www.militaryfactory.com/conversioncalculators/sp ...

590mph is 512 knots....

that means the plane was flying 152 knots faster than it is permitted to do so...

can a hijacker control a plane flying 152 knots faster than it's permitted ias?

i don't think so..

This post has been edited by Seatnineb: Aug 16 2008, 04:30 AM

[rcane]

590mph is 512 knots....

that means the plane was flying 152 knots faster than it is permitted to do so...

can a hijacker control a plane flying 152 knots faster than it's permitted ias?

i don't think so..

Don't think. Know. To be fair in all of this.

Normal category airplanes are built with approximately 50% fudge factor built in.

Which means a POH 4g limitation printed is about 6g's before you taco the spar.



To be fair a pilot will do what is necessary to maintain control of an aircraft--even if subconsciously performed. You're picking sh@t out of pepper by profession a hijacker can't control an aircraft 152 kts faster than "permitted". Again, permitted?

The question should be more designed toward who could hit the target at all.

HEY ROB***

Going back to operating outside the limitations:

You remember how jumpy the 328 was by the time v1 came around? That thing was coming off the ground just about ass-first if you let it.

One of our guys ran one off a runway a few years later. The report from NTSB indicated they were about 40kts beyond v1 before initiating the rejection.

40kts.

I can only imagine what forces that required to keep it down.


The point is, he was able to maintain centerline control while WELL outside the parameters for ground maneuvering.

Moral: Just because it's printed doesn't necessarily mean it's a universal law of physics.


Let's all keep an open mind.

[Seatnineb]

Don't think. Know. To be fair in all of this.

Normal category airplanes are built with approximately 50% fudge factor built in.

Which means a POH 4g limitation printed is about 6g's before you taco the spar.



To be fair a pilot will do what is necessary to maintain control of an aircraft--even if subconsciously performed. You're picking sh@t out of pepper by profession a hijacker can't control an aircraft 152 kts faster than "permitted". Again, permitted?

The question should be more designed toward who could hit the target at all.

HEY ROB***

Going back to operating outside the limitations:

You remember how jumpy the 328 was by the time v1 came around? That thing was coming off the ground just about ass-first if you let it.

One of our guys ran one off a runway a few years later. The report from NTSB indicated they were about 40kts beyond v1 before initiating the rejection.

40kts.

I can only imagine what forces that required to keep it down.


The point is, he was able to maintain centerline control while WELL outside the parameters for ground maneuvering.

Moral: Just because it's printed doesn't necessarily mean it's a universal law of physics.


Let's all keep an open mind.

We gotta factor in the laws of aerodynamics with what was shown in the video

The plane did a steep descent:
(IMG:http://img166.imageshack.us/img166/1934/cbslivejoinedcb3.gif)

...and then for the final approach....went into a shallow descent:
(IMG:http://img240.imageshack.us/img240/1309/wb11li1.gif)

...and all of this at 152 knots faster than it's permitted IAS.....food for thought.