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Forum: Tech Log
10th Aug 2011, 17:19
Replies: 1,998
Views: 507,689
Posted By DJ77

FCOM 1.27.10 P3: "The two controllers are...

FCOM 1.27.10 P3:

"The two controllers are springloaded to neutral, and are not mechanically coupled."
Forum: Tech Log
9th Aug 2011, 22:33
Replies: 1,998
Views: 507,689
Posted By DJ77

Looking at the BEA plots or better at mm43’s...

Looking at the BEA plots or better at mm43’s re-arranged plots (#1770) pitch response to the few consistent nose-down sidestick inputs appears very weak. Except the last one, pitch curve minima seem...
Forum: Tech Log
7th Aug 2011, 21:19
Replies: 1,998
Views: 507,689
Posted By DJ77

@DozyWannabe. DW, I understand your point that...

@DozyWannabe.
DW, I understand your point that in ALT2 the computers are missing some handles but to lose s/w would require triple AoA sensor failure or triple ADR failure or double FWC failure (and...
Forum: Tech Log
7th Aug 2011, 15:19
Replies: 1,998
Views: 507,689
Posted By DJ77

Hi Smilin Ed, I generally share your views...

Hi Smilin Ed,

I generally share your views about autotrim but we have to acknowledge that many pilots love it and find the bus safe, easy and pleasant to fly.

When I was teaching pilots...
Forum: Tech Log
7th Aug 2011, 12:17
Replies: 1,998
Views: 507,689
Posted By DJ77

Was not it B. ?

Was not it B. ?
Forum: Tech Log
6th Aug 2011, 07:08
Replies: 1,998
Views: 507,689
Posted By DJ77

Are you kidding ?

Are you kidding ?
Forum: Tech Log
5th Aug 2011, 16:43
Replies: 1,998
Views: 507,689
Posted By DJ77

No wonder he didn't understand, he could not know...

No wonder he didn't understand, he could not know the PF was not trying to do what he said he would do after the zoom climb: descend.
Forum: Tech Log
4th Aug 2011, 21:08
Replies: 1,998
Views: 507,689
Posted By DJ77

I thought the Airbus side stick was simply...

I thought the Airbus side stick was simply spring-loaded to neutral. I would not call that an artificial feel.

An a/c with mechanical controls sends back two qualitative messages to its pilot as...
Forum: Tech Log
30th Jul 2011, 20:26
Replies: 1,998
Views: 507,689
Posted By DJ77

Slected V/S

HN39,
It appears that each time the FDs become available again and engage in HDG/VS mode the selected V/S in the FCU window resets to the instantaneous V/S.

EDIT: "Vitesse verticale sélectée" =...
Forum: Tech Log
27th Jul 2011, 08:56
Replies: 1,998
Views: 507,689
Posted By DJ77

I understand Gums' proposed scenario was to try...

I understand Gums' proposed scenario was to try to confuse the confusers, specifically the AoA protection (normal law, correct speed data) as he did with the Viper. Apparently not directly related to...
Forum: Tech Log
26th Jul 2011, 22:47
Replies: 1,998
Views: 507,689
Posted By DJ77

Not so sure you could. I think the scenario...

Not so sure you could.

I think the scenario you describe explains why the “bus” FBW computers calculate a “phase advanced AoA” as mentioned in the A340 zoom climb incident report. Remember the...
Forum: Tech Log
24th Jul 2011, 20:02
Replies: 1,998
Views: 507,689
Posted By DJ77

Please wallybird7 do you really think we need...

Please wallybird7 do you really think we need another lecture about CBs ?

It may surprise you but be assured that just as every airman AF crews know that you don't venture into the big bad wolf's...
Forum: Tech Log
17th Jul 2011, 23:28
Replies: 1,998
Views: 507,689
Posted By DJ77

Hi Grity, In the context of calculations...

Hi Grity,


In the context of calculations of moments relative to the CG, the longitudinal components of aero forces and the "vertical" distance (i.e. the distance measured along the yaw axis)...
Forum: Tech Log
16th Jul 2011, 21:37
Replies: 1,998
Views: 507,689
Posted By DJ77

Hi Grity, I don't think the height of the...

Hi Grity,

I don't think the height of the CG plays a significant role at any attitude.
Forum: Tech Log
16th Jul 2011, 20:23
Replies: 1,998
Views: 507,689
Posted By DJ77

Right, with the elevator in full up position...

Right, with the elevator in full up position almost masked to the airflow and counterbalanced by an assumed nose up wing/body moment. If the elevator goes down, the THS + elevator frontal area...
Forum: Tech Log
16th Jul 2011, 16:40
Replies: 1,998
Views: 507,689
Posted By DJ77

Bear, AoA_tail = AoA_wing/body - downwash...

Bear,

AoA_tail = AoA_wing/body - downwash angle - THS trim angle.

No BEA info but close to 3 deg NU I think.

No.
As most people here, I cannot understand the PF insisting on NU inputs...
Forum: Tech Log
16th Jul 2011, 12:43
Replies: 1,998
Views: 507,689
Posted By DJ77

gums, many thanks for the data. I am aware that...

gums, many thanks for the data.
I am aware that the Viper has a delta wing and strakes that generate powerful vortices at high AoA. The stabilators also form a delta-shaped plan (but without the...
Forum: Tech Log
14th Jul 2011, 20:34
Replies: 1,998
Views: 507,689
Posted By DJ77

Hi Gums, I think that perhaps on the graph of...

Hi Gums,
I think that perhaps on the graph of the pitching moment of the Viper the points where the stabilator starts stalling may be detectable. Do you know its max deflections? was it a symetric...
Forum: Tech Log
13th Jul 2011, 08:10
Replies: 1,998
Views: 507,689
Posted By DJ77

C*

Thanks Chris Scott for your detailed answer about C*. I wil take some time trying to uderstand it better.

Thanks also PJ2 for the references to C* docs.
Forum: Tech Log
12th Jul 2011, 22:18
Replies: 1,998
Views: 507,689
Posted By DJ77

Originany posted by Owain Glyndwr about the...

Originany posted by Owain Glyndwr about the downwash angle:



Ordinarily, the downwash angle at the tail is related to the lift coefficient more than to the wing/body AoA. Would your values be...
Forum: Tech Log
12th Jul 2011, 10:21
Replies: 1,998
Views: 507,689
Posted By DJ77

Please, what is this transition from g-control to...

Please, what is this transition from g-control to pitch-control you are talking about and where is it described in the FCOM? Does it apply to A-330?
Showing results 1 to 21 of 21


 
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