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Search: Posts Made By: A33Zab
Showing results 1 to 35 of 55
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Forum: Tech Log
12th Aug 2011, 15:14
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Diversification:

1/ Don't know, actual values are not given in the documentation.

2/ a) No, all AoAs are within 1 degree of one other @02:10:05
2/ b) No, an AoA error wouldn't reject all ADR signals, its the CAS...
Forum: Tech Log
12th Aug 2011, 14:59
Replies: 1,998
Views: 509,998
Posted By A33Zab

SS Feedback.

For the guys wondering about the absence of (force) feedback to the stick.

Which F/B signal should be applied, A/C RESPONSE or surface deflection signal. (FEEDBACK SIGNALS)?
...
Forum: Tech Log
12th Aug 2011, 12:33
Replies: 1,998
Views: 509,998
Posted By A33Zab

AoA#1 sensor.

Hi CONF iture,



Thx for recalling this post, I did reply on that one but at the same time
the forum was 'under maintenance' and I forgot later on.

Each Aoa vane drives 3 identical...
Forum: Tech Log
12th Aug 2011, 08:39
Replies: 1,998
Views: 509,998
Posted By A33Zab

@CONF:

-The AOA replacement program was already in progress before publication of the 3rd BEA report.

-They did found the cause: 'machine oil residu left after the fabrication process' and so they know...
Forum: Tech Log
10th Aug 2011, 18:35
Replies: 1,998
Views: 509,998
Posted By A33Zab

SS artificial feel.

PJ2 & Takata:

There is NO feedback to SS.
Both roll and pitch channel have identical dampers.

Roll channel two rotary spring elements which ensures artificial feel.
Pitch channel two...
Forum: Tech Log
9th Aug 2011, 00:10
Replies: 1,998
Views: 509,998
Posted By A33Zab

@mm43 & HN39:

Good observation!:ok:

Thx for the effort to make this clear.

@Diagnostic & sensor_validation:

so AOA#1 could be effected, however didn't had any influence.

FCPC using median AOA (or...
Forum: Tech Log
7th Aug 2011, 21:43
Replies: 1,998
Views: 509,998
Posted By A33Zab

@ChristiaanJ:

IMO a non A. FBW and even the FBW insiders are already confused.

Sometimes a simplified approach can explain a lot i.s.o. confuse.

I know there are potmeters involved (hey, did post the SS...
Forum: Tech Log
7th Aug 2011, 19:48
Replies: 1,998
Views: 509,998
Posted By A33Zab

active artificial feel.

I understand that the mixed mode (PITCH NZ / ROLL DIRECT ) will not be easy to handle but wasn't the idea behind Nz to use the SS more or less as a toggleswitch?
toggle NU > release > toggle ND to...
Forum: Tech Log
7th Aug 2011, 19:18
Replies: 1,998
Views: 509,998
Posted By A33Zab

THS speed rate:

I’ve got these figures of THS rate.

The THS itself (the ballscrew) is driven by 2 hydraulic (B & Y) motors.

Max. Operating Load and Max. Speed (2 motors)

18940 daN (42578.81 lbf) -----...
Forum: Tech Log
7th Aug 2011, 17:59
Replies: 1,998
Views: 509,998
Posted By A33Zab

@DW:

Hi DW,



It depends what is understood by LLS, indeed you loose the protections but as long Nz and Nx are available there is speed stability due to thrust changes.

In fact you can see it...
Forum: Tech Log
7th Aug 2011, 16:37
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Config Full:

- The stall warning is processed in FWCs not FCPCs
- It's the ADR itself which sets AOA to 0° (SSM=NCD) if CAS is below 60 Kts.

(A. did already changed that with 'BUSS' option, AOA is always...
Forum: Tech Log
6th Aug 2011, 09:33
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Takata:

Thx, clear now.

The 'stable' inertial V/S was replaced by unreliable and fluctuating ADR V/S.

'Another slice and hole for the swiss cheese model'
Forum: Tech Log
6th Aug 2011, 00:28
Replies: 1,998
Views: 509,998
Posted By A33Zab

Vertical speed.

Hi Takata,

Well in fact this question was raised by me.......and I did read the full reports but maybe I did missed this one.

Ok, try to formulate it another way.......for what reason could...
Forum: Tech Log
5th Aug 2011, 23:06
Replies: 1,998
Views: 509,998
Posted By A33Zab

@CONF iture:

Hi Conf,

This discrete represents the source of the vertical speed indication on PFD.

From the report: page 94 (English version)



and confirmed by FCOM.
Forum: Tech Log
5th Aug 2011, 14:48
Replies: 1,998
Views: 509,998
Posted By A33Zab

@SaturnV:

The thrust changes are part of the normal and longitudinal acceleration
experienced by the accelerometers and refelected by the corresponding graphs.

The -normal accell- (Nz) graph is composed...
Forum: Tech Log
5th Aug 2011, 12:10
Replies: 1,998
Views: 509,998
Posted By A33Zab

Questions: Selected Vertical Speed.

CONF iture:


Exact! and the spikes @ 02:10:16 'CLOSING of the CAS monitoring window & ADR rejections'?

http://i474.photobucket.com/albums/rr101/Zab999/NORM2ALTUNSTABLE.jpg
Forum: Tech Log
4th Aug 2011, 10:10
Replies: 1,998
Views: 509,998
Posted By A33Zab

Selected vertical speed?

Can anyone explain this?


http://i474.photobucket.com/albums/rr101/Zab999/NORM2ALTUNSTABLE.jpg

The vertical speed trace, left of the blue line (A/P drop off).
Vert. Speed seems to be...
Forum: Tech Log
3rd Aug 2011, 23:41
Replies: 1,998
Views: 509,998
Posted By A33Zab

In english

English version (http://www.bea.aero/docspa/2009/f-cp090601e3.en/pdf/f-cp090601e3.en.pdf)
Forum: Tech Log
3rd Aug 2011, 22:07
Replies: 1,998
Views: 509,998
Posted By A33Zab

@JD-EE and others who want to trace......

If you want to trace and compare, don't forget to take the accelleration into account.
The - accelleration normale* - is the feedback (besides elevator servo deflection) to the FBW pitch channel.
...
Forum: Tech Log
3rd Aug 2011, 21:48
Replies: 1,998
Views: 509,998
Posted By A33Zab

Stall warning:

Triggering a Stall Warning: "STALL STALL" is not the difficult part in the logic.

The challeging part is to trigger a stall warning when it is appropriate to do so
(for the flight condition &...
Forum: Tech Log
3rd Aug 2011, 14:24
Replies: 1,998
Views: 509,998
Posted By A33Zab

Stall Recovery

I know it has been posted several times before......

Stall Recovery FCTM.
ISSUE DATE: 15 JUN 10


STALL RECOGNITION
The flight crew must apply the stall recovery procedure as soon as they...
Forum: Tech Log
2nd Aug 2011, 20:18
Replies: 1,998
Views: 509,998
Posted By A33Zab

Cockpit Door.

This is a non issue, Cockpit door can be unlocked from the pedestal.
Forum: Tech Log
2nd Aug 2011, 07:27
Replies: 1,998
Views: 509,998
Posted By A33Zab

PJ2:

Youre right but only if they wanted to maintain 1g flight.
They wanted up, SS command >1g while A/C response was down <1g.
Forum: Tech Log
2nd Aug 2011, 01:19
Replies: 1,998
Views: 509,998
Posted By A33Zab

Toga & ths

I did post the image before, THS movement E4 thru E5 related to TOGA C4 thru C5

Now with this text from FCTM:

Flight Mode
In pitch, when an input is made on the sidestick, the flight...
Forum: Tech Log
2nd Aug 2011, 00:26
Replies: 1,998
Views: 509,998
Posted By A33Zab

@JD-EE

You forgot to program an END IF, EXIT IF and ERROR handler.........:8

Before 02:11:45 the CAS was not below 60Kts and SW operational.
They modified the system, AOA input to IR part of ADIRU and...
Forum: Tech Log
2nd Aug 2011, 00:07
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Bearfoil:

where have you been last years?

1 sec!

02:10:05 AP disengage.
02:10:06 ALTERNATE LAW (at the start of the 10s monitoring proces)
02:10:08 A/THR disengage.
02:10:16 ALTERNATE LAW LATCHED.
Forum: Tech Log
1st Aug 2011, 23:58
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Gums:

hi Gums,

Don't get me wrong, the 1°/g is not an absolute value.
It is used to explain the elevator deflection criteria.

The massive THS/Stab for heavy transporters are 'slow' screw driven,...
Forum: Tech Log
1st Aug 2011, 17:41
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Conf iture & Mr. Optimistic:

In ALT/DIRECT no Hi AOA protection, most proberly PRIMs don't care about that......
For SW the highest value of the 3 AOA's is the trigger.

FWIW currently an AOA sensor replacement program is...
Forum: Tech Log
1st Aug 2011, 17:11
Replies: 1,998
Views: 509,998
Posted By A33Zab

@RetiredF4:

THS:

IN FLIGHT
In flight, on all fly-by-wire aircraft, the position of the pitch trim surface
automatically adjusts in order to maintain the flight path with no deflection of the elevators....
Forum: Tech Log
1st Aug 2011, 09:34
Replies: 1,998
Views: 509,998
Posted By A33Zab

@ Takata:

I did have the same observations,



Few seconds before AP disconnect (Line 1B)
Forum: Tech Log
30th Jul 2011, 09:15
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Grity

FCOM
1.31.40

INDICATIONS ON PFD

VERTICAL SPEED:

The displayed vertical speed information is normally based on both inertial and barometric data.
If inertial data is not available, it...
Forum: Tech Log
29th Jul 2011, 21:20
Replies: 1,998
Views: 509,998
Posted By A33Zab

@JCJEANT:

You mean this period? I did draw some lines and added text.

Indeed most peculiar, TOGA?
sorry no answer yet, I have to wait for full translation.
...
Forum: Tech Log
29th Jul 2011, 03:35
Replies: 1,998
Views: 509,998
Posted By A33Zab

@Conf:

NO,

From 02:10:06 it was in Alternate 2 Law, after 02:10:16 this ALT 2 was latched.

http://i474.photobucket.com/albums/rr101/Zab999/Dia13.jpg
Forum: Tech Log
28th Jul 2011, 21:54
Replies: 1,998
Views: 509,998
Posted By A33Zab

Adr fault

The reason why ADR 1(2)(3) or ADR 1+2, 2+3 or 1+3 FAIL messages were absent is because the ADRs didn't fail.
They did send (CAS < 30Kts) a SSM(System Status Matrix) signal NCD and a value output of...
Forum: Tech Log
26th Jul 2011, 19:43
Replies: 1,998
Views: 509,998
Posted By A33Zab

@ Takata:

ADR Single and ADR Dual faults are detected by ADR itself.
A Triple ADR Failure message (ADR 1+2+3 FAULT) only exist if the BUSS option is installed, this is a level 3 (Red & Master Warning).
This...
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