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Phantom flight
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March 31st 05, 11:13 PM
John Carrier
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"Doug "Woody" and Erin Beal" wrote in message
...
On 3/29/05 6:17 AM, in article
, "John
Carrier" wrote:
I experienced the low altitude manifestation once and use the incident as
an
illustration of the effects (big time overstress) of transonic pitch up
for
my aero lecture.
R / John
John,
Even the Hornet does it. I've got a few "811's" (maintenance overstress
code) due to transonic pitch up. .95 to the merge and load on the G's,
and
the FCS can't keep up (i.e. reduce the pitch rate fast enough) to keep the
g-meter from exceeding 7.5.
Worst I've ever seen was 8.4--still category 1 overstress only (low
limit--visual inspection only).
Most A/C do it to some degree (even the lowly T-45 ... 1.04 on a good day,
downhill). Some are worse than others. The F-8 wasn't much of a problem.
At low altitude, the F-4 didn't give a hint and could be. Never ran into it
in the Turkey, but there were so many moving parts ....
R / John
John Carrier