PPRuNe Forums - Search Results
PPRuNe Forums

Go Back  PPRuNe Forums > Search Forums
Reload this Page >

Search Results

Register
FAQ
Calendar
Wikiposts
Today's Posts
Search
Vendor Directory
Search: Posts Made By: skwinty
Showing results 1 to 26 of 26
Search took 0.00 seconds.
Forum: Tech Log
16th Sep 2011, 19:30
Replies: 95
Views: 19,016
Posted By skwinty

I hope it doesn't head in that direction as well....

I hope it doesn't head in that direction as well. The no planers theories are beyond comprehension..

gravity32's question was answered in post 4 already.:\
Forum: Tech Log
16th Sep 2011, 17:18
Replies: 95
Views: 19,016
Posted By skwinty

If there was a conspiracy theory sub forum here,...

If there was a conspiracy theory sub forum here, I would say this thread is heading in that direction.:suspect:
Forum: Tech Log
16th Sep 2011, 16:49
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, The altitude calibration velocity...

gravity32,

The altitude calibration velocity would be at least Mach .8 at high altitude.
As I posted earlier.

488 knots at 500 ft is completely outside of the normal flight envelope.

This,...
Forum: Tech Log
16th Sep 2011, 15:55
Replies: 95
Views: 19,016
Posted By skwinty

It is firstly obvious to me that the aircraft was...

It is firstly obvious to me that the aircraft was completely outside of its normal flight envelope. The aircraft was deliberately flown into the building with no regard to normal flight procedures....
Forum: Tech Log
16th Sep 2011, 15:32
Replies: 95
Views: 19,016
Posted By skwinty

If the computer performs the calibration in...

If the computer performs the calibration in flight, then the speed envelope should cover at least Mach .8 so the graph would show that as the upper velocity range.

Obviously, at low altitude the...
Forum: Tech Log
16th Sep 2011, 15:14
Replies: 95
Views: 19,016
Posted By skwinty

What happens then with supersonic aircraft? ...

What happens then with supersonic aircraft?

Do they suffer from serious altitude increases due to velocity induced pressure errors?

After all, aircraft have been going supersonic for years...
Forum: Tech Log
16th Sep 2011, 14:58
Replies: 95
Views: 19,016
Posted By skwinty

CJ, Even if the calibration is done at speed...

CJ,

Even if the calibration is done at speed electronically, there would still be an inherent error due to external and conversion influences.

The error introduced by the difference in the...
Forum: Tech Log
16th Sep 2011, 12:22
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, The perplexing thing about the...

gravity32,

The perplexing thing about the idea of speed affecting the operation of a barometric altimeter is this:

The calibration of an altimeter is of the form

z=cT log(Po/P)

where...
Forum: Tech Log
16th Sep 2011, 11:06
Replies: 95
Views: 19,016
Posted By skwinty

Gravity32, Fair enough. You are concerned...

Gravity32,

Fair enough. You are concerned about the speed affecting the altimeter reading.

Now once again, lets say the calibration data shows that the aircraft was flying at speeds exceeding...
Forum: Tech Log
16th Sep 2011, 06:04
Replies: 95
Views: 19,016
Posted By skwinty

Gravity32, The static port can only be mounted...

Gravity32,
The static port can only be mounted on the fuselage side where the air is relatively undisturbed.
If it were mounted on the nose of the aircraft then the speed of the aircraft would...
Forum: Tech Log
15th Sep 2011, 19:48
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, What puzzles me is what evidence...

gravity32,

What puzzles me is what evidence will the calibration chart reveal.

I ask this question because the accuracy of the pressure altimeter is subject to so many variables. The only...
Forum: Tech Log
15th Sep 2011, 18:23
Replies: 95
Views: 19,016
Posted By skwinty

Hi CJ and gravity32, Have you seen this? ...

Hi CJ and gravity32,

Have you seen this?

The Pentagon Attack on 9/11: A Refutation of the Pentagon Flyover Hypothesis Based on Analysis of the Flight Path...
Forum: Tech Log
15th Sep 2011, 17:19
Replies: 95
Views: 19,016
Posted By skwinty

Yes you are right CJ, gravity32 wants the...

Yes you are right CJ, gravity32 wants the specific aircraft calibration data.

He has said that Boeing will not supply him with this data.

My thinking is that Boeing must surely adhere to the...
Forum: Tech Log
15th Sep 2011, 16:49
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, I have my doubts that you will...

gravity32,

I have my doubts that you will find the data you are looking for in the aircraft and pilot manuals.

I did find this document which lists all the required standards for altimetry...
Forum: Tech Log
15th Sep 2011, 10:26
Replies: 95
Views: 19,016
Posted By skwinty

Hi gravity32, Have you seen these? ...

Hi gravity32,

Have you seen these?

AA77 FDR Data, Explained - Page 108 - JREF Forum (http://forums.randi.org/showthread.php?t=66047&page=108)

108 pages of FDR altitude conspiracy theory...
Forum: Tech Log
15th Sep 2011, 07:08
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, How can the altitude data be...

gravity32,

How can the altitude data be "unadjusted" if it's units are feet?

A raw or unadjusted signal would be measured in pressure units and not feet.

The deviations to the data at...
Forum: Tech Log
14th Sep 2011, 15:58
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, See link for analysis of a Boeing...

gravity32,

See link for analysis of a Boeing 757 altitude data being used in serious incident investigation. The altitude data used in this investigation is FDR QNH corrected altitude data.

Are...
Forum: Tech Log
14th Sep 2011, 14:23
Replies: 95
Views: 19,016
Posted By skwinty

I read the bulletin as the changing of the...

I read the bulletin as the changing of the barometric setting on the altimeter having an effect on the VNAV signals and FMC systems.

Anyway, I am in uncharted territory here, so good luck in your...
Forum: Tech Log
14th Sep 2011, 13:51
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, have a look at this boeing 757...

gravity32,
have a look at this boeing 757 bulletin.

"
The amount of undershoot or overshoot depends on the amount of the barometric correction, when the altimeter is reset, and the elapsed time...
Forum: Tech Log
14th Sep 2011, 12:23
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, Do you think that the terrorists...

gravity32,

Do you think that the terrorists flying the aircraft would have worried about resetting the reference datum of the altimeter en route to their target?
Forum: Tech Log
14th Sep 2011, 08:29
Replies: 95
Views: 19,016
Posted By skwinty

The weight of the evidence lay in the ruins of...

The weight of the evidence lay in the ruins of the Pentagon and WTC.

I have debated with enough twoofers to know that they are delusional.:ugh:
Forum: Tech Log
14th Sep 2011, 08:01
Replies: 95
Views: 19,016
Posted By skwinty

It has been my experience that you will never...

It has been my experience that you will never ruin a good story with facts.

People who believe in conspiracy theories will not be swayed by a calibration graph, which is not surprising given that...
Forum: Tech Log
13th Sep 2011, 18:31
Replies: 95
Views: 19,016
Posted By skwinty

That is exactly why you should use your pressure...

That is exactly why you should use your pressure altimeter at altitude and your radalt for ground proximity at low altitude.

Horses for courses.;)
Forum: Tech Log
13th Sep 2011, 17:56
Replies: 95
Views: 19,016
Posted By skwinty

No problem gravity32, I hope that some one is...

No problem gravity32,
I hope that some one is able to come up with the graph you are looking for. I cannot help you with that..:)
Forum: Tech Log
13th Sep 2011, 17:23
Replies: 95
Views: 19,016
Posted By skwinty

gravity32, try reading this link. It will have...

gravity32, try reading this link. It will have the same and more data that you are seeking.

Pitot-Static Instrument Calibration (http://www.eaa1000.av.org/technicl/instcal/instcal.htm)

Your...
Forum: Tech Log
13th Sep 2011, 15:48
Replies: 95
Views: 19,016
Posted By skwinty

The cause is that they are two different types of...

The cause is that they are two different types of instruments that operate on totally different principles and measure two distinctly different parameters.:ok:
Showing results 1 to 26 of 26


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.