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Search: Posts Made By: Graybeard
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Forum: Tech Log
9th Aug 2011, 13:42
Replies: 1,998
Views: 511,668
Posted By Graybeard

Doesn't speed stable also mean pitch stable? ...

Doesn't speed stable also mean pitch stable? When I studied aerodynamics a hundred years ago, the instructor said all conventional airplanes are unstable in pitch. Their sphugoid may be long in...
Forum: Tech Log
2nd Aug 2011, 05:03
Replies: 1,998
Views: 511,668
Posted By Graybeard

Old Carthusian: In spite of meeting...

Old Carthusian:
In spite of meeting certification specifications, heating of pitot probes is hardly rocket science, and to have them ice up repeatedly in a $multi-million plane means the design or...
Forum: Tech Log
21st Jul 2011, 14:52
Replies: 1,998
Views: 511,668
Posted By Graybeard

Vague Verbiage

The BEA reports on 447 remind me of the US Constitution. The Constitution is sufficiently vague that we have a Supreme Court that continues to interpret its meaning 222 years later.
Forum: Tech Log
19th Jul 2011, 06:03
Replies: 1,998
Views: 511,668
Posted By Graybeard

CG

How come BEA didn't know the takeoff cg was 23% at time of first report? Why didn't they do your math?

As long as BEA is being vague and inspiring wild guesses: what is the chance that the...
Forum: Tech Log
18th Jul 2011, 11:52
Replies: 1,998
Views: 511,668
Posted By Graybeard

I hope BEA explains how the cg moved from the...

I hope BEA explains how the cg moved from the automatic 38% MAC, as shown above, and in the initial report, to 29% (or was it 23?) in its latest report.
Forum: Tech Log
10th Jul 2011, 23:24
Replies: 1,998
Views: 511,668
Posted By Graybeard

Static Port Placement

grity:

Interesting graph, Grity; thanks.

I should have explained that my surprise was not at the fore-aft placement of the static ports on the A330, but their placement so low on the...
Forum: Tech Log
9th Jul 2011, 23:56
Replies: 1,998
Views: 511,668
Posted By Graybeard

Static (from last page of thread 4)

HN39:

Thanks also to A337 for the refresher pix of the static ports.

The A330 has an apparent up to 300 ft static port correction at low airspeeds. This is not unusual, but at a greater AOA...
Showing results 1 to 7 of 7


 
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