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Search: Posts Made By: RR_NDB
Showing results 1 to 35 of 36
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Forum: Tech Log
10th Apr 2012, 01:28
Replies: 251
Views: 63,693
Posted By RR_NDB

We, then, etc. and press

:ok:

Our agenda to (always) be: Air Safety (for future, possible cases) in order to: low probability to occur again.
Forum: Tech Log
8th Apr 2012, 20:20
Replies: 251
Views: 63,693
Posted By RR_NDB

Plane also was operating as designed*

Hi,

PJ2:



Thanks
Forum: Tech Log
8th Apr 2012, 18:15
Replies: 251
Views: 63,693
Posted By RR_NDB

"Simple" when comparing with AF447

Hi,

Organfreak:


"Simple" compared with AF447 (complexity) (http://www.pprune.org/tech-log/481350-man-machine-interface-anomalies.html#post7124336)

I edited post including quotes around the...
Forum: Tech Log
8th Apr 2012, 18:06
Replies: 251
Views: 63,693
Posted By RR_NDB

"Insider information" and crew Confidence in the A/C

Hi,

Airbus it seems (based on we have) consider UAS an information (not necessarily) to be shared immediately with crew.

Instead, requires (the crew) to scan and assess (then, decide)

And,...
Forum: Tech Log
8th Apr 2012, 16:06
Replies: 251
Views: 63,693
Posted By RR_NDB

Independent investigation?

Hi,

IGh:




If in a "simple" issue (a door part) this occurred, what could happen when investigating a System (effective aircraft: System + crew) even the designers don't understand...
Forum: Tech Log
15th Mar 2012, 13:18
Replies: 251
Views: 63,693
Posted By RR_NDB

Protections

I am studying carefully before posting part B and C on "Transient in feedback Systems II" and i have a question "hovering" in my mind. :8

Why not to implement a protection against climbing above...
Forum: Tech Log
12th Mar 2012, 20:34
Replies: 251
Views: 63,693
Posted By RR_NDB

Surfaces damage

Hi,

A33Zab,

Fine biz,

Kind rgds.
Forum: Tech Log
12th Mar 2012, 04:00
Replies: 251
Views: 63,693
Posted By RR_NDB

Failures in Feedback Systems

Hi,

I learned from CJ, on the Concorde YD was slightly disturbed when HF radio was transmitting. Yaw Damper is a good example of a "closed loop" feedback System.

EMI/EMC aspects caused this...
Forum: Tech Log
12th Mar 2012, 03:28
Replies: 251
Views: 63,693
Posted By RR_NDB

Glitch or intermittent failure

Hi,

Bear,

Probably facing a glitch, :)



Certainly.
Forum: Tech Log
12th Mar 2012, 00:31
Replies: 251
Views: 63,693
Posted By RR_NDB

Crazy speedS

Hi,

Bear, :)

(http://www.pprune.org/tech-log/478681-af447-final-crew-conversation-thread-no-2-a-8.html#post7076285)

Based in a "pattern" memorized when read pertinent data (essentially...
Forum: Tech Log
11th Mar 2012, 21:41
Replies: 251
Views: 63,693
Posted By RR_NDB

Crazy speedS

Hi,

Machinbird:



My rationale was based in the speeds (in plural). And also because "crystalline ice shower"...
Forum: Tech Log
11th Mar 2012, 21:27
Replies: 251
Views: 63,693
Posted By RR_NDB

Pitot heater

Hi,

Machinbird:



I would design like that. it is correct.

Thank you
Forum: Tech Log
11th Mar 2012, 21:11
Replies: 251
Views: 63,693
Posted By RR_NDB

New thread

Hi,

gums



As i understand, when PF is "inserted in the loop" due A/C anomalies, "crew coord, warning systems and training" becomes much more critical. Man machine interface must be very good...
Forum: Tech Log
11th Mar 2012, 20:57
Replies: 251
Views: 63,693
Posted By RR_NDB

No redundance?

Hi,

A33Zab



Why in series?
Forum: Tech Log
11th Mar 2012, 20:51
Replies: 251
Views: 63,693
Posted By RR_NDB

GIGO

Hi,

Garbage in is not allowed by IT personnel wisely because will generate Garbage out.

Question:

Considering PF is "inserted in the loop" when A/P (and A/THR) drops why PF of AF447 told...
Forum: Tech Log
11th Mar 2012, 20:40
Replies: 251
Views: 63,693
Posted By RR_NDB

Large stimuli to a System near limits

Hi,

RetiredF4



Important point assertively mentioned!

And prior to any other "pitch stimuli"
Forum: Tech Log
11th Mar 2012, 20:30
Replies: 251
Views: 63,693
Posted By RR_NDB

The beginning of the end and remaining chances

Hi,

Machinbird:



:ok:
Forum: Tech Log
11th Mar 2012, 20:25
Replies: 251
Views: 63,693
Posted By RR_NDB

Lost information like AS

Hi,

CONF iture



It is technically feasible (and not costly) to detect this type of failure (on the fly :)).

In new designs and existing (easy retrofit). Sensing aerodynamic pressure...
Forum: Tech Log
9th Mar 2012, 20:13
Replies: 251
Views: 63,693
Posted By RR_NDB

Lacking information

Hi,

We are with limited factual information on the case. There are some reasons, we understand.

Trying to understand the "non understandable" reasons of PF (persistent NU) and in a simulation...
Forum: Tech Log
6th Mar 2012, 01:09
Replies: 251
Views: 63,693
Posted By RR_NDB

AS probes

Hi,

Turbine D,



I think so.

PS
Forum: Tech Log
6th Mar 2012, 01:00
Replies: 251
Views: 63,693
Posted By RR_NDB

Passion for aviation due the multidisciplinary aspects

Hi,

PJ2,

The Synergy and motivation we can exercise here with you and other aces is great.

We must use when possible the opportunities to explore new ways to look to the issues.

The...
Forum: Tech Log
6th Mar 2012, 00:25
Replies: 251
Views: 63,693
Posted By RR_NDB

Hi, Owain Glyndwr Why? What led...

Hi,

Owain Glyndwr



Why? What led him to do that? No reasons?

PF was operating as "part of the feedback loop". He acted doing the opposite. What he received from the System?
Forum: Tech Log
5th Mar 2012, 22:41
Replies: 251
Views: 63,693
Posted By RR_NDB

Important sensors and crew operating "out of specs"

Hi,

PJ2,



Actually before encountering ice crystal the A/C was working fine, i agree.

After increase of CVR noise and fit with OBSOLETE FR probes we may say she was no longer fine.
Forum: Tech Log
5th Mar 2012, 22:20
Replies: 251
Views: 63,693
Posted By RR_NDB

Graceful degradation of the entire System (A/C + crew)

Hi,

Owain Glyndwr,



Sure! :ok:
Forum: Tech Log
5th Mar 2012, 21:44
Replies: 251
Views: 63,693
Posted By RR_NDB

Obsolete AS probes

Hi,

Machinbird

Those guys designing aircraft pitot tubes really have been stuck in the dark ages. ...
Forum: Tech Log
5th Mar 2012, 21:32
Replies: 251
Views: 63,693
Posted By RR_NDB

Pitot tubes

Hi,

Mr Optimistic,

When i understood the heating approach used in the TRIPLE sensors (failing near SIMULTANEOUSLY), i tend to be,

Pessimistic,

:}
Forum: Tech Log
5th Mar 2012, 20:30
Replies: 251
Views: 63,693
Posted By RR_NDB

Transient in Feedback Systems II and F-GZCP Stability (part A)

Hi,

PJ2



Means nothing? Sir, respectfully i disagree; here is (the beginning of) WHY:

With the Synergy of a highly motivated group we can touch some "sensitives points" in our effort to...
Forum: Tech Log
2nd Mar 2012, 22:30
Replies: 251
Views: 63,693
Posted By RR_NDB

Pitot anti icing and THS changes

Hi,

Owain Glyndwr

Don't you think that the problem might be both more subtle and more complex than just the amount of heat applied?...
Forum: Tech Log
2nd Mar 2012, 20:06
Replies: 251
Views: 63,693
Posted By RR_NDB

HN39 questions and A33Zab comments

Hi,

HN39,

Will process pertinent information and review my books on the subject before. Thanks for questioning. Will answer ASAP.

A33Zab,
Forum: Tech Log
2nd Mar 2012, 18:52
Replies: 251
Views: 63,693
Posted By RR_NDB

Pitot heating was in auto or manual mode?

Hi,

F-GZCP was operating with Pitot heating in which mode? Auto or manual mode?

This was mentioned in BEA reports on AF447 case?

FDR records enough data on this issue?

In other 32 UAS...
Forum: Tech Log
2nd Mar 2012, 17:19
Replies: 251
Views: 63,693
Posted By RR_NDB

1st question

Hi,

HazelNuts39,



Is the power being applied to the AS probes enough in order to their proper operation?

The power UNDER STEADY STATE CONDITIONS (operating at MAX POWER) is enough?
Forum: Tech Log
2nd Mar 2012, 15:25
Replies: 251
Views: 63,693
Posted By RR_NDB

K.I.S.S.

Hi,



In AUTO mode you will have a delay from "sensing" to "correct" to the required probe temperature.

if you apply maximum available power, ("open loop condition") no delay at all :)

At...
Forum: Tech Log
2nd Mar 2012, 15:08
Replies: 251
Views: 63,693
Posted By RR_NDB

Time constant

lomapaseo,

i suspect US probe is "faster" to adapt to a "new environment".

The max power is the same to both probes.

Anyway i will go deep in this subject as you suggested.

IMHO the...
Forum: Tech Log
2nd Mar 2012, 12:39
Replies: 251
Views: 63,693
Posted By RR_NDB

Transient in Feedback Systems (I)

Hi,

Feedback loops are designed (and potentially capable) to improve a System.

For example, the AS probes in auto mode receives just the required electric power.

Feedback loops are designed...
Forum: Tech Log
2nd Mar 2012, 12:13
Replies: 251
Views: 63,693
Posted By RR_NDB

THS

Hi,

Owain Glyndwr,

In your opinion what kind of improvement(s)* could and should be made to the aircraft Systems in order to effectively "help" the crew in similar situations in respect to THS...
Showing results 1 to 35 of 36
 
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