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Search: Posts Made By: PJ2
Showing results 1 to 35 of 37
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Forum: Tech Log
12th Jun 2011, 04:30
Replies: 2,070
Views: 614,854
Posted By PJ2

CONF iture...this should do it: ...

CONF iture...this should do it:

Investigation: AO-2009-065 - Unreliable airspeed indication - 710 km south of Guam, 28 October 2009, VH-EBA, Airbus A330 202...
Forum: Tech Log
12th Jun 2011, 01:02
Replies: 2,070
Views: 614,854
Posted By PJ2

bear; I'm a data guy and gums is right - a...

bear;

I'm a data guy and gums is right - a detailed analysis isn't wise nor is it possible. I think dissecting the BEA Note word-by-word and looking for subtle meaning between the lines is a...
Forum: Tech Log
11th Jun 2011, 18:28
Replies: 2,070
Views: 614,854
Posted By PJ2

DJ77; Since I cannot find an answer in the...

DJ77; Since I cannot find an answer in the material available to the question you and others have asked, "What Garage Years has been asking for a while now is the value of the critical AoA (AoAc)...
Forum: Tech Log
10th Jun 2011, 18:21
Replies: 2,070
Views: 614,854
Posted By PJ2

bear; On fifteen seconds, sure. Fourty-five...

bear;

On fifteen seconds, sure. Fourty-five takes the examination to the apogee but yes, we can look at a narrower time frame and make sense.

On the UAS, absolutely the notions are inferred,...
Forum: Tech Log
10th Jun 2011, 14:43
Replies: 2,070
Views: 614,854
Posted By PJ2

rgbrock1; Well, perhaps, but then what does...

rgbrock1;

Well, perhaps, but then what does that say?
Forum: Tech Log
10th Jun 2011, 14:33
Replies: 2,070
Views: 614,854
Posted By PJ2

The BEA note provided altitude information which...

The BEA note provided altitude information which means that altimeter data was recorded just as the (failing) airspeed was recorded. So at least one of the altimeters was functioning correctly and...
Forum: Tech Log
10th Jun 2011, 06:42
Replies: 2,070
Views: 614,854
Posted By PJ2

grizz; Yes, there are alternate scenarios...

grizz;

Yes, there are alternate scenarios for sure. If weather, especially if it includes airframe icing, (rare at that altitude, rarer at -40C, but not impossible as we know), was present,...
Forum: Tech Log
10th Jun 2011, 04:30
Replies: 2,070
Views: 614,854
Posted By PJ2

PickyPerkins; I can't say one way or...

PickyPerkins;

I can't say one way or another. It was the standard when I did any stall work for the initial ride when getting checked out on a new type. I recall that minimal altitude loss was...
Forum: Tech Log
10th Jun 2011, 00:34
Replies: 2,070
Views: 614,854
Posted By PJ2

Machinbird; By "do nothing", I didn't mean...

Machinbird;

By "do nothing", I didn't mean literally sit there, hands-off doing nothing :) , I meant that the airplane had to be hand-flown like a real airplane, maintaining, (not changing) pitch...
Forum: Tech Log
10th Jun 2011, 00:12
Replies: 2,070
Views: 614,854
Posted By PJ2

JD-EE; I made that comment shortly after the...

JD-EE;

I made that comment shortly after the airspeed-ACARS discussion began in July, 2009 and have done so several times since to get that aspect of the discussion going. "Do nothing" not only...
Forum: Tech Log
9th Jun 2011, 21:39
Replies: 2,070
Views: 614,854
Posted By PJ2

Smilin'.... Because the L/D curve is as...

Smilin'....

Because the L/D curve is as shallow as a dinner plate and one is trying to keep a marble in the middle... ;-) !
Forum: Tech Log
9th Jun 2011, 21:36
Replies: 2,070
Views: 614,854
Posted By PJ2

Concur. The C* Law in the A320/A330/A340 is...

Concur.

The C* Law in the A320/A330/A340 is gee driven. Alternate Law 1/2 are variations/protections bolted onto the C* Law. In Direct Law, the stick is a B737 control column and its WYSIWIG...
Forum: Tech Log
9th Jun 2011, 17:30
Replies: 2,070
Views: 614,854
Posted By PJ2

LW_50; Regarding what the PF saw..., CONF...

LW_50;

Regarding what the PF saw..., CONF iture asked the question a while back about whether the QAR would have the CAS parameter displayed on the F/O's PFD.

There is no easy way to answer...
Forum: Tech Log
9th Jun 2011, 16:29
Replies: 2,070
Views: 614,854
Posted By PJ2

FE Hoppy; I wasn't aware that there were...

FE Hoppy;

I wasn't aware that there were "no-go" zones in this discussion. Are we under an informal rule or do we stay true to our craft?

The notion of "blame" is not in play in any discussion...
Forum: Tech Log
9th Jun 2011, 16:07
Replies: 2,070
Views: 614,854
Posted By PJ2

Thank you for the info, A33Zab. I found one...

Thank you for the info, A33Zab. I found one additional piece on accuracy of the AoA sensors. The accuracy of the AoA sensors at 100kts is +/- 0.30 deg.

The FWC [Flight Warning Computer] activates...
Forum: Tech Log
9th Jun 2011, 15:38
Replies: 2,070
Views: 614,854
Posted By PJ2

JD-EE; Lonewolf_50's post describes this...

JD-EE;

Lonewolf_50's post describes this very well.

If we must continue to reference airspeed when in fact it has nothing to do with the stall warning which is driven solely by AoA, the "screwy...
Forum: Tech Log
9th Jun 2011, 04:40
Replies: 2,070
Views: 614,854
Posted By PJ2

Machinbird; Your welcome. I know you...

Machinbird;

Your welcome.

I know you and a few here will understand the processes behind the imagination and design capability required to create a reliable, predictable fly-by-wire control...
Forum: Tech Log
8th Jun 2011, 23:38
Replies: 2,070
Views: 614,854
Posted By PJ2

I would like to offer the following as a basis...

I would like to offer the following as a basis for understanding the C* flight control parameter (law). The paper was written in 1993 when research into "FBW" was already thirty years old. As the...
Forum: Tech Log
7th Jun 2011, 06:12
Replies: 2,070
Views: 614,854
Posted By PJ2

CONF iture; Yes, it's possible but...

CONF iture;

Yes, it's possible but complicated.

The JARs, FARs and CARs, (Europe, USA, Canada), require mandatory data frames which record parameters at mandatory rates, (frames-per-second) on...
Forum: Tech Log
6th Jun 2011, 23:49
Replies: 2,070
Views: 614,854
Posted By PJ2

Turbine D; I don't have the numbers for a...

Turbine D;

I don't have the numbers for a CF installation on a 332. The Trent installation on a 333 requires a cruise N1% of 78.1, with a CG of 37% - the chart doesn't provide for corrections but...
Forum: Tech Log
6th Jun 2011, 20:24
Replies: 2,070
Views: 614,854
Posted By PJ2

tubby, others, I deleted the post temporarily as...

tubby, others, I deleted the post temporarily as I was unhappy with it. Sorry for the loss of signal. This stuff has to be done so carefully so as not to cause wrong understandings and lead others...
Forum: Tech Log
4th Jun 2011, 18:37
Replies: 2,070
Views: 614,854
Posted By PJ2

gums; I have experienced Mach buffet once,...

gums;

I have experienced Mach buffet once, very quickly, almost certainly 'g' (and of course, AoA) related. That is where my characterization of the buffet as "sharp" came from. I have never...
Forum: Tech Log
3rd Jun 2011, 19:29
Replies: 2,070
Views: 614,854
Posted By PJ2

3holelover; oops, yes, extra...ordinary,...

3holelover;

oops, yes, extra...ordinary, yes, that's what I meant...really.

;)
Forum: Tech Log
3rd Jun 2011, 19:26
Replies: 2,070
Views: 614,854
Posted By PJ2

BOAC; 'k, that clarifies and d'accord with...

BOAC;

'k, that clarifies and d'accord with your historical views as well...shoulda known.

A fbw system is inconsistent with the simplistic notion of the 'big red button'. The B777's reversion...
Forum: Tech Log
3rd Jun 2011, 17:16
Replies: 2,070
Views: 614,854
Posted By PJ2

BOAC; I realize you're being a bit facetious...

BOAC;

I realize you're being a bit facetious and that you don't like automation per se, or perhaps the way it has been handled. There is plenty of room I think, to grow with technology, while...
Forum: Tech Log
2nd Jun 2011, 01:16
Replies: 2,070
Views: 614,854
Posted By PJ2

bubbers44; So...as per comments above and...

bubbers44;

So...as per comments above and your experience, can the difference between Mach buffet, and stall buffet, be felt/determined? Your thoughts...would one know when one is in high speed or...
Forum: Tech Log
1st Jun 2011, 18:48
Replies: 2,070
Views: 614,854
Posted By PJ2

LW_50...yeah, that's a big displacement to be...

LW_50...yeah, that's a big displacement to be accounted for by that response from the AFS...hm. Another research item but just heading out...I'd have to ask the question whether or not the AFS would...
Forum: Tech Log
1st Jun 2011, 18:33
Replies: 2,070
Views: 614,854
Posted By PJ2

JD-EE; From experience and from the paucity...

JD-EE;

From experience and from the paucity of responses regarding Machinbird's request for "Alternate Law" (1 or 2) experience, it is indeed a very rare event.

Alternate Law itself, like...
Forum: Tech Log
1st Jun 2011, 16:58
Replies: 2,070
Views: 614,854
Posted By PJ2

wiggy; And all other combinations of such...

wiggy;

And all other combinations of such events...it is an exceedingly difficult problem with which to come to terms, and really, when we come to thinking hard about it, the "goal" is informed by...
Forum: Tech Log
1st Jun 2011, 15:24
Replies: 2,070
Views: 614,854
Posted By PJ2

JD-EE; Couple of points for discussion: ...

JD-EE;

Couple of points for discussion:

The "stall" isn't as demarcated a break-point as it may seem. A wing, especially complex designs such as the A330 (and most other transports) does not...
Forum: Tech Log
1st Jun 2011, 02:13
Replies: 2,070
Views: 614,854
Posted By PJ2

Capn Bloggs; Yes, it is a bit harsh, isn't...

Capn Bloggs;

Yes, it is a bit harsh, isn't it. It's how this matter, (the intoxication with automation), which I and many here and elsewhere, have been writing about since the 90s, is going to...
Forum: Tech Log
1st Jun 2011, 01:59
Replies: 2,070
Views: 614,854
Posted By PJ2

BBB...this is a conversation between mature...

BBB...this is a conversation between mature adults, both pilots. I'm not about to control what people do or say. I'm asking for a little forebearance in terms of the discussion, which, because you...
Forum: Tech Log
1st Jun 2011, 00:55
Replies: 2,070
Views: 614,854
Posted By PJ2

Please....can we just keep to the topic at hand...

Please....can we just keep to the topic at hand and not launch yet one more 'eroding skills' discussion...it's been done to death and never resolves a thing.

Sorry, BBB, but dang, it gets a tad...
Forum: Tech Log
31st May 2011, 23:39
Replies: 2,070
Views: 614,854
Posted By PJ2

Graybeard, yeah, I think you're right...the...

Graybeard, yeah, I think you're right...the "fault" makes no sense. I'll dig too.
Forum: Tech Log
31st May 2011, 22:46
Replies: 2,070
Views: 614,854
Posted By PJ2

mm43, graybeard; The TCAS has numerous...

mm43, graybeard;

The TCAS has numerous system inputs. One of the inputs is the stall warning system. I think the NAV TCAS FAULT message was triggered by a programmed inhibition of the TCAS...
Showing results 1 to 35 of 37
 
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