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Search: Posts Made By: HazelNuts39
Showing results 1 to 35 of 45
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Forum: Tech Log
29th Feb 2012, 20:47
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Hello PJ2; Thank you for pointing out that I...

Hello PJ2;

Thank you for pointing out that I was mistaken when I referred to the memory items. I regret that I didn't think a bit longer before writing that quick reply to A33Zab's post.

Of...
Forum: Tech Log
29th Feb 2012, 15:45
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

No, I would think more like a back-up for the UAS...

No, I would think more like a back-up for the UAS 'memory item':

IF in TOGA: .... TOGA/15°
ELSE, below FL100: CLB/10°; above FL100: CLB/5°
THEN: Refer to QRH
Forum: Tech Log
29th Feb 2012, 11:01
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Right, so survival will always depend on correct...

Right, so survival will always depend on correct application of the appropriate procedure. Would it be very difficult to have the pitch and power appropriate for the flight condition displayed on the...
Forum: Tech Log
19th Feb 2012, 10:07
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Sorry, but I don't understand that. Isn't the...

Sorry, but I don't understand that. Isn't the proposed (new) CS-25.1324 just that?

The basis for the proposed CS-25 Appendix P ice crystal certification environment is described in FAA Technical...
Forum: Tech Log
18th Feb 2012, 18:53
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Read NPA 2011-03, p. 60 "CS.1324" (all new), and...

Read NPA 2011-03, p. 60 "CS.1324" (all new), and p. 75 "Appendix P" (all new).
Forum: Tech Log
18th Feb 2012, 08:13
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Keep reading.

Keep reading.
Forum: Tech Log
17th Feb 2012, 22:18
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Maybe reading NPA 2011-03...

Maybe reading NPA 2011-03 (http://easa.europa.eu/rulemaking/docs/npa/2011/NPA%202011-03.pdf) will give you some idea.
Forum: Tech Log
17th Feb 2012, 09:15
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

jcjeant, 14 years of inaction? You obviously...

jcjeant,
14 years of inaction? You obviously have no idea of the work that needed to be done and has been done.
Forum: Tech Log
16th Feb 2012, 22:44
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Organfreak, In what respect were the pitots...

Organfreak,
In what respect were the pitots 'substandard'?

jcjeant,
AF447 did not encounter the icing conditions (SLD) the NTSB recommendation is addressing.
Forum: Tech Log
12th Feb 2012, 23:04
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

I believe that this is correct provided a thrust...

I believe that this is correct provided a thrust is set that maintains arspeed for the chosen trajectory.
Forum: Tech Log
12th Feb 2012, 17:02
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Was he perhaps trying to maintain 15° pitch...

Was he perhaps trying to maintain 15° pitch attitude?
http://i.imgur.com/krjIV.gif
Forum: Tech Log
10th Feb 2012, 21:54
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Glad rag, You'll find it at AF447 thread no.7...

Glad rag,
You'll find it at AF447 thread no.7 page 27 post 523 (http://www.pprune.org/tech-log/468394-af-447-thread-no-7-a-27.html#post6828192).
Forum: Tech Log
10th Feb 2012, 16:59
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Maybe so, BUT ... would the sidestick input alone...

Maybe so, BUT ... would the sidestick input alone not have kept the airplane in the stall?
Forum: Tech Log
10th Feb 2012, 08:17
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Yes, at 2:11:10 the AoA is well past the maximum...

Yes, at 2:11:10 the AoA is well past the maximum lift and the LF has dropped to 0.75 g. One could say the "mush" starts as early as 02:10:52. Up to this time the normal load factor (=lift,...
Forum: Tech Log
9th Feb 2012, 16:19
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

The a/c stalled when AoA exceeded 10° at...

The a/c stalled when AoA exceeded 10° at 2h10m57s. At that time the F/O was seeing IAS from ADR3 which was still UAS, while the Captain PFD was on ADR1 which had returned to normal some 20s earlier...
Forum: Tech Log
25th Jan 2012, 16:53
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

EDIT:: The graph presented in this post has been...

EDIT:: The graph presented in this post has been deleted. New information posted by A33Zab in post #1185 has invalidated the assumptions used in the graph.
Forum: Tech Log
25th Jan 2012, 14:55
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Would this be better? >>> ...

Would this be better? >>>

http://i44.tinypic.com/9fmxc4.jpg
Forum: Tech Log
25th Jan 2012, 10:52
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

A33Zab; Three questions RE your post #1120...

A33Zab;

Three questions RE your post #1120 explaining the BUSS scale:
1. The red upper area corresponds to CAS > VFE. Assuming that VFE is flap limit speed, would that be Vmo/Mmo in clean...
Forum: Tech Log
24th Jan 2012, 11:06
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

No, according to Joelle Barthe's description, the...

No, according to Joelle Barthe's description, the Back-up Speed Scale indication "is based on angle of attack (AOA) sensor information".
Ground speed was 380 kts at the stall, 200 kts when stall...
Forum: Tech Log
24th Jan 2012, 08:43
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

A33Zab; Thanks for the information on the...

A33Zab;

Thanks for the information on the BUSS.

Some time ago a post claimed that it displays AoA and nothing else. Would it be possible to retrieve information on how it works internally, i.e....
Forum: Tech Log
21st Jan 2012, 10:56
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Is that inertial data + raw AoA, or does the BUSS...

Is that inertial data + raw AoA, or does the BUSS not use AoA vane angle at all?
Forum: Tech Log
19th Jan 2012, 15:38
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Maybe if stall warning is understood and...

Maybe if stall warning is understood and respected for what it is, the airplane will not "deep" stall?
Forum: Tech Log
4th Jan 2012, 14:53
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

The turn started some 20 secs after the airplane...

The turn started some 20 secs after the airplane stalled.
Forum: Tech Log
4th Jan 2012, 09:26
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

AB33Zab, I must admit I know nothing about...

AB33Zab,

I must admit I know nothing about the AP/FD functioning and am just trying to understand. The FCU vertical control area has an altitude window and a VS / FPA window. The pushbutton...
Forum: Tech Log
4th Jan 2012, 05:42
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Wouldn't that depend on the selected AP/FD...

Wouldn't that depend on the selected AP/FD vertical mode?
Forum: Tech Log
3rd Jan 2012, 15:18
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

BEA 3rd Interim report: What would the FD...

BEA 3rd Interim report:
What would the FD command have been between 2:10:47 and 2:11:38?
Forum: Tech Log
31st Dec 2011, 20:14
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Just a small point: +17.9 ANU was reached at...

Just a small point: +17.9 ANU was reached at 2h11min07, about 10 seconds after the airplane stalled. More seriously: Perhaps 'believed' is not the right description, maybe his memorization of the...
Forum: Tech Log
31st Dec 2011, 15:55
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

The FDR data show that the airspeed did not...

The FDR data show that the airspeed did not change significantly in the 5 seconds between closure of the throttles and capture of alpha-prot. (To put this into perspective: the engines take more than...
Forum: Tech Log
28th Dec 2011, 19:56
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

The incident is described in an AF internal...

The incident is described in an AF internal message (in French): Level bust en turbulences (http://www.md80.it/bbforum/viewtopic.php?f=5&t=38150) An English translation can be found here: Air France...
Forum: Tech Log
16th Dec 2011, 09:45
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

CONF iture (re #841), With the benefit of...

CONF iture (re #841),

With the benefit of hindsight I mostly agree, if there are no other reasons that necessitate the speed constraint.

While I agree with your observation regarding the...
Forum: Tech Log
15th Dec 2011, 16:07
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Machinbird, I'd be interested in the definition...

Machinbird,
I'd be interested in the definition of AoA at 0 airspeed and in the accuracy of the value you observed. Did the maneuver you were performing require accurate knowledge of AoA?
Forum: Tech Log
15th Dec 2011, 15:21
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

But why include such a speed condition? Because...

But why include such a speed condition?
Because there is a minimum speed below which the required accuracy of the AoA sensors cannot be guaranteed. Even if a lower value had been chosen, the IAS...
Forum: Tech Log
15th Dec 2011, 09:23
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

CONF iture, It could be argued that that...

CONF iture,
It could be argued that that description is correct provided the stall warning is respected as called for in FCOM 3.04.27 p.6: I strongly suspect that AB system designers never realized...
Forum: Tech Log
14th Dec 2011, 12:16
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

Based on the recorded groundspeed AF447 didn't...

Based on the recorded groundspeed AF447 didn't get below 120 kCAS either. The IAS went below 60 kt due to distortion of the local pressure at the static source at extreme angles of attack which (AoA)...
Forum: Tech Log
13th Dec 2011, 12:54
Replies: 1,412
Views: 471,854
Posted By HazelNuts39

The FPA wo'nt change much until the A/C is...

The FPA wo'nt change much until the A/C is unstalled and able to develop g's. Therefore the change in AoA is of the same order as the change in pitch.
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