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Search: Posts Made By: HazelNuts39
Showing results 1 to 35 of 65
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Forum: Tech Log
29th Nov 2013, 07:25
Replies: 976
Views: 217,844
Posted By HazelNuts39

Machinbird, THe stall warning consists of a...

Machinbird,

THe stall warning consists of a “STALL, STALL” aural warning, followed
by a characteristic cricket sound and the illumination of the Master Warning light. It has priority over the...
Forum: Tech Log
25th Nov 2013, 17:23
Replies: 976
Views: 217,844
Posted By HazelNuts39

For the duration, as for the intensity, I invite...

For the duration, as for the intensity, I invite you to look at the traces in the BEA Final report. Furthermore, it is not obvious on what information that statement is based. Maybe it would have...
Forum: Tech Log
25th Nov 2013, 15:52
Replies: 976
Views: 217,844
Posted By HazelNuts39

I fail to understand the bickering about...

I fail to understand the bickering about insignificant details. The flight we are discussing was not a test flight and is not part of the investigation. The comité d'experts (two A330 captains, one...
Forum: Tech Log
23rd Nov 2013, 17:19
Replies: 976
Views: 217,844
Posted By HazelNuts39

Why a 340? Presumably because Airbus had one...

Why a 340? Presumably because Airbus had one available and it is aerodynamically and systems-wise similar to an A330. One doesn't want to fool around in deterrent buffet in an airplane that is being...
Forum: Tech Log
23rd Nov 2013, 16:44
Replies: 976
Views: 217,844
Posted By HazelNuts39

Hi Chris, Thanks for your refinements of my...

Hi Chris,

Thanks for your refinements of my translation. On many french 'peages' you pass a toll station at entry where you take a ticket, and again at the end where you pay the toll. The 'strips'...
Forum: Tech Log
23rd Nov 2013, 11:38
Replies: 976
Views: 217,844
Posted By HazelNuts39

How about the airplane shaking so badly that the...

How about the airplane shaking so badly that the PNF couldn't hold a handset?

From the judicial expert's final report:

http://i.imgur.com/enqIXyT.jpg?1
Forum: Tech Log
22nd Nov 2013, 16:42
Replies: 976
Views: 217,844
Posted By HazelNuts39

Hi rrrrr, I thought we were discussing the...

Hi rrrrr,

I thought we were discussing the moment the captain entered the cockpit and the stall warning stopped, which was at 02:11:44.

The stall warning operated again two times before...
Forum: Tech Log
22nd Nov 2013, 16:09
Replies: 976
Views: 217,844
Posted By HazelNuts39

Furthermore ... 10,000 ft/minute TAS at FL...

Furthermore ...

10,000 ft/minute TAS at FL 350 ISA + 11°C is about 54 kt CAS
Forum: Tech Log
22nd Nov 2013, 09:22
Replies: 976
Views: 217,844
Posted By HazelNuts39

rudderrudderrat, please name an airplane...

rudderrudderrat,

please name an airplane that uses vertical speed as a substitute for airspeed
Forum: Tech Log
22nd Nov 2013, 07:56
Replies: 976
Views: 217,844
Posted By HazelNuts39

Airspeed is derived from the differential between...

Airspeed is derived from the differential between pitot and static pressures. Is there any airplane that derives it from static pressure alone?

Hindsight wisdom ...
Forum: Tech Log
21st Nov 2013, 19:43
Replies: 976
Views: 217,844
Posted By HazelNuts39

Peter H; You mean these two events?

Peter H;

You mean these two events?
Forum: Tech Log
20th Nov 2013, 15:56
Replies: 976
Views: 217,844
Posted By HazelNuts39

Just a reminder - the Final Report para. 1.6.11...

Just a reminder - the Final Report para. 1.6.11 says it thus:
Forum: Tech Log
17th Nov 2013, 21:13
Replies: 976
Views: 217,844
Posted By HazelNuts39

A33Zab, Thanks for correcting me.

A33Zab,

Thanks for correcting me.
Forum: Tech Log
17th Nov 2013, 12:02
Replies: 976
Views: 217,844
Posted By HazelNuts39

ventus45, even simpler would be providing an...

ventus45,

even simpler would be providing an AoA indicator that shows a flag when AoA=NCD.
Forum: Tech Log
17th Nov 2013, 10:59
Replies: 976
Views: 217,844
Posted By HazelNuts39

I'm not a systems expert and have to leave the...

I'm not a systems expert and have to leave the reply to your question to them. Considering what modifications are necessary to implement the BUSS, it sounds to me like a major redesign of the the...
Forum: Tech Log
17th Nov 2013, 08:56
Replies: 976
Views: 217,844
Posted By HazelNuts39

Perhaps some PPRuNers tend to over-simplify? ...

Perhaps some PPRuNers tend to over-simplify?

If you insist on having the last word, I'll leave it at that.
Forum: Tech Log
17th Nov 2013, 08:18
Replies: 976
Views: 217,844
Posted By HazelNuts39

The ADIRU determines the vane angle from the...

The ADIRU determines the vane angle from the sensor 'resolver' values. Possibly it applies a calibration of vane angle vs body angle of attack for the flap/slat configuration. If the airspeed is less...
Forum: Tech Log
17th Nov 2013, 07:08
Replies: 976
Views: 217,844
Posted By HazelNuts39

Years ago I proposed that, if the AoA signal is...

Years ago I proposed that, if the AoA signal is lost while stall warning is active, the stall warning should continue until a valid AoA signal indicates that the AoA is less than the stall warning...
Forum: Tech Log
16th Nov 2013, 20:00
Replies: 976
Views: 217,844
Posted By HazelNuts39

Was it inconsistent? When did I say that?

Was it inconsistent?

When did I say that?
Forum: Tech Log
16th Nov 2013, 18:38
Replies: 976
Views: 217,844
Posted By HazelNuts39

You need a bit of hindsight to know that. There...

You need a bit of hindsight to know that.
There were much more powerful indicators to tell the crew they were stalled. They were all ignored, just as the stall warning itself.
Forum: Tech Log
16th Nov 2013, 17:23
Replies: 976
Views: 217,844
Posted By HazelNuts39

At less than 1 g, sure it can do that. Without...

At less than 1 g, sure it can do that. Without stalling too.

The point is that the manufacturer of an AoA sensor can guarantee a certain accuracy only within a certain envelope. Outside that...
Forum: Tech Log
16th Nov 2013, 16:45
Replies: 976
Views: 217,844
Posted By HazelNuts39

To meet a certain vane angle accuracy...

To meet a certain vane angle accuracy requirement, I guess.

At FL410, ISA - 35C, for example.
Forum: Tech Log
10th Nov 2013, 21:01
Replies: 976
Views: 217,844
Posted By HazelNuts39

Re: F-GLZU

FWIW, the way I read he traces, and as I wrote earlier:

When airspeed is greater than Valpha-prot (*), lift at alpha-prot is greater than weight, Nz is greater than one, flight path gradient...
Forum: Tech Log
10th Nov 2013, 18:17
Replies: 976
Views: 217,844
Posted By HazelNuts39

Chris Scott Why me? I probably know much...

Chris Scott

Why me? I probably know much less of the airplane than you do. My understanding is that activation/deactivation of any protection is recorded by the DFDR by a dedicated discrete...
Forum: Tech Log
10th Nov 2013, 08:19
Replies: 976
Views: 217,844
Posted By HazelNuts39

I think a quick look at the annex of the BEA...

I think a quick look at the annex of the BEA report proves my point.
The sidestick was neutral between 01:00:33 and 01:02:06. During this time the pitch attitude increased "on its own" from 4 to 12...
Forum: Tech Log
9th Nov 2013, 20:46
Replies: 976
Views: 217,844
Posted By HazelNuts39

Was it ? ....

Was it ? ....
Forum: Tech Log
9th Nov 2013, 14:51
Replies: 976
Views: 217,844
Posted By HazelNuts39

With the sidestick left in neutral the airplane...

With the sidestick left in neutral the airplane will pitch up on its own -

-- in AoA law at alpha=alpha-prot if the speed is greater than Valpha-prot
-- in Nz law when the pitch attitude is...
Forum: Tech Log
8th Nov 2013, 19:03
Replies: 976
Views: 217,844
Posted By HazelNuts39

It may just need a little help from atmospheric...

It may just need a little help from atmospheric disturbances. Without those, it would just maintain alpha-prot in a phugoid motion which may be damped.

P.S. I think you mean Nz-law. The 'normal'...
Forum: Tech Log
6th Nov 2013, 20:23
Replies: 976
Views: 217,844
Posted By HazelNuts39

Chris, Both incidents have been discussed on...

Chris,

Both incidents have been discussed on PPRuNe when the respective reports were published. I do remember that the disengagement conditions were modified after the AIRPROX incident, but I...
Forum: Tech Log
6th Nov 2013, 11:44
Replies: 976
Views: 217,844
Posted By HazelNuts39

A similar incident: Air France A340-313, over the...

A similar incident: Air France A340-313, over the North-Atlantic on 22 july 2011 (http://www.bea.aero/docspa/2011/f-zu110722.en/pdf/f-zu110722.en.pdf)
Forum: Tech Log
1st Nov 2013, 17:20
Replies: 976
Views: 217,844
Posted By HazelNuts39

That is a very intriguing question. I would love...

That is a very intriguing question. I would love to know the answer to that.
Forum: Tech Log
1st Nov 2013, 07:35
Replies: 976
Views: 217,844
Posted By HazelNuts39

tdracer, the stall warning is a synthetic...

tdracer,

the stall warning is a synthetic voice shouting "STALL","STALL","STALL" followed by an irritating "cricket" noise. It 'goes away' whenever the AoA is greater than 42.5 degrees.

IMHO...
Forum: Tech Log
31st Oct 2013, 22:09
Replies: 976
Views: 217,844
Posted By HazelNuts39

Turbine D, Slightly more accurate would be...

Turbine D,

Slightly more accurate would be to say that the ADIRU which processes the data it receives from the AoA sensor (and other air data sensors) considered the AoA value invalid and sent the...
Forum: Tech Log
31st Oct 2013, 19:44
Replies: 976
Views: 217,844
Posted By HazelNuts39

That is correct, I'm not so sure about the rest....

That is correct, I'm not so sure about the rest. The report doesn't say that alpha-floor was activated. It should have activated somewhere between alpha-prot and alpha-max, but maybe that threshold...
Forum: Tech Log
30th Oct 2013, 18:19
Replies: 976
Views: 217,844
Posted By HazelNuts39

chrisN, From another glider pilot, also an...

chrisN,

From another glider pilot, also an ex-professional though not as a pilot,

Yes, there was an overspeed condition that caused a warning an disconnection of the A/P. However, that ...
Showing results 1 to 35 of 65
 
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