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Search: Posts Made By: A33Zab
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Forum: Tech Log
23rd Mar 2012, 01:19
Replies: 251
Views: 63,680
Posted By A33Zab

@CONF iture:

Maybe this clears up.

LVDTs
The linear variable differential transformer (LVDT) is a sensor used to measure displacement in the industrial environment. An LVDT consists of three coils of wire...
Forum: Tech Log
19th Mar 2012, 10:13
Replies: 251
Views: 63,680
Posted By A33Zab

RTLU

@MM43:

THx, edited the link.

@ CONF iture:

Maybe I was not clear, this did not occur to AF447!.

It was a reply on your suggestion of extending the slats.
Forum: Tech Log
18th Mar 2012, 13:37
Replies: 251
Views: 63,680
Posted By A33Zab

@CONF:

IMO the TLU trace shows its RVDT angle ISO max. rudder deflection.

Ref. mm43: RTLU GRAPH (http://www.pprune.org/tech-log/478681-af447-final-crew-conversation-thread-no-2-a-11.html#post7088235)
...
Forum: Tech Log
14th Mar 2012, 22:47
Replies: 251
Views: 63,680
Posted By A33Zab

@OF:

No, RTLU is common on A320 series, (PTLU) was added to this system on A34/33 from the start....AFAK.
My ATA 27 pages with diagrams of RTLU and PTLU are dated APR 1993.

But AA587 was A300 isn't...
Forum: Tech Log
14th Mar 2012, 20:24
Replies: 251
Views: 63,680
Posted By A33Zab

@CONF iture:

Because the RTLU is not a Rudder DEFLECTION Limiter but a rudder INPUT limiter.

@~02:13:00 the pedal input was abrupt and full 8° while Yaw damper was deflecting the rudder in same direction max...
Forum: Tech Log
14th Mar 2012, 16:40
Replies: 251
Views: 63,680
Posted By A33Zab

@CONF iture:

RTLU was not stuck, as in jammed, it was freezed at the position it was.
this is a protection not a malfunction of the RTLU.
RTLU reset would have been accomplished upon S/F selection.

If...
Forum: Tech Log
14th Mar 2012, 13:03
Replies: 251
Views: 63,680
Posted By A33Zab

@HN39:

The ADR monitoring of FMGEC is a continuous process and rather complicated...:8
simplified it needs at least 2 valid sources for the command side, OWN ADR and ADR 3, with OWN ADR as default.
But...
Forum: Tech Log
13th Mar 2012, 21:40
Replies: 251
Views: 63,680
Posted By A33Zab

@HN39:

No thx,

BTW, very good observation! I don't have an answer.
Airspeed acc. graph was still above 30Kts.

Confirmed by the CVR transcript pages @ 02:11:40:
Forum: Tech Log
13th Mar 2012, 21:08
Replies: 251
Views: 63,680
Posted By A33Zab

@HN39:

My copy of (p. 44 I.R.#3 EN) shows speed flag @ 02:11:40 not @ 02:10:40.
Is my copy again outdated? or do you need to increase the font size a little bit:)



Minor correction, STBY is below...
Forum: Tech Log
12th Mar 2012, 19:37
Replies: 251
Views: 63,680
Posted By A33Zab

Roll surface damage?

CONF iture:



RR_NDB:




Looking at the aileron & spoiler traces:
Forum: Tech Log
8th Mar 2012, 22:24
Replies: 251
Views: 63,680
Posted By A33Zab

@HazelNuts39:

Absolutely agree! Thanks for the addition:ok:
Forum: Tech Log
8th Mar 2012, 16:12
Replies: 251
Views: 63,680
Posted By A33Zab

PFD messages.

You confuse PFD with ECAM....
ECAM message is F/CTL ALTN LAW(PROT LOST)

The only messages you will see on PFD is RED "MAN PITCH TRIM ONLY"
or AMBER "USE MAN PITCH TRIM" or a FMGS related or...
Forum: Tech Log
8th Mar 2012, 09:04
Replies: 251
Views: 63,680
Posted By A33Zab

Total pressure tube heater:

Heater is 2 elements of resistance wire, ~34 Ohm @ 20°C.
Uses full 115VACrms wave in flight and half wave (~81Vac) on ground.

PHC warnings levels <0.9A and >6A in flight; <0.4A and >4A on...
Forum: Tech Log
4th Mar 2012, 21:57
Replies: 251
Views: 63,680
Posted By A33Zab

Re: It isn't just me who doesn't trust

Read good information and valuable discussion on PPruNe, but also a lot of rubbish......this post is beyond the last category.
Forum: Tech Log
3rd Mar 2012, 23:08
Replies: 251
Views: 63,680
Posted By A33Zab

SPECIFICATIONS

It proves Airbus is K.I.S.S.!

The switch needs only to be touched to ON in de-icing like PJ2 stated and if dual or all PITOT HEAT FAIL message is shown.



Uhhh...isn't that what is...
Forum: Tech Log
2nd Mar 2012, 22:36
Replies: 251
Views: 63,680
Posted By A33Zab

@RR_NDB:

No, switch to ON bypasses the auto logic but is the same circuit as in flight and at least 1 eng in RUN state.

The figure explains the function of switch and logic:
...
Forum: Tech Log
2nd Mar 2012, 19:38
Replies: 251
Views: 63,680
Posted By A33Zab

@RR_NDB

You will locally heat-treat the neighboring skin with insufficient cooling.

I don't have exact data for the probe, but AOA operating temp is 120 ºC,
suppose this will be the same for the probe....
Showing results 1 to 17 of 17


 
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