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Difference between Airbus and Boeing controls

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Difference between Airbus and Boeing controls

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Old 14th Apr 2007, 17:51
  #101 (permalink)  
Fil
 
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1- That was not just "too-little" but MAJOR ... passing 50 feet the VISIBLE trim wheel (and at least it's a good thing they kept it !) moved from 1.5 to ... 4.5 UP
2- No interest in classic flight controls comparison, but in fully visible coupled flight controls, it could be as well 777 or C-17 or EMB last generation ...
Just as a aside it is Airbus on who elected to keep the visible trim wheel on their FBW aircraft and Boeing who deceided to remove it from their FBW 777. Had you been in a Boeing CONF you'd not have seen this maybe in a way backing up what you were saying about visible feedback.

How many here tend to favour the aircraft they first flew in their sidestick/control column views?

My own (personal) feelings is neither manufacturer got it entirely right. Why don't Airbus thrust levers move? Why doesn't the 777 have decent envelope protection? Why is there no trim wheel only those trim levers on the 777? Why does the Airbus tend to get trickier (or more challenging) on gusty crosswind days whereas the 777 isn't affected as much?

Fil
(Have flown both 320 and 777)
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Old 15th Apr 2007, 02:40
  #102 (permalink)  
 
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Just as a aside it is Airbus on who elected to keep the visible trim wheel on their FBW aircraft
... it could be they changed their mind as well ...
Trim wheel ?

Now, how much longer for rudder pedals to be linked ... !?

757 / 767 had already lost trim wheels, but at least they kept the MAIN flight controls items.

Fixed thrust levers is not a big issue, as thrust reading is very clear to both pilots.
It just makes thrust disconnection less conventional and one has to think before proceeding.

How many here tend to favour the aircraft they first flew in their sidestick/control column views?
No emotion here, but technical characteristics.
Actually I do appreciate bus flightdeck for MANY reasons, but I realize how much, sometimes, I would even more appreciate to still benefit from the things I did mention earlier in this thread.

Airbus took a radical option with sidesticks.
I believe they did not consult properly.
They did not evaluate properly.
Pilots were not central parameters in the equation.
AI was already betting on a single pilot operation,
just waiting for the day they simply would do without.

... but automatism did not deliver as expected ... ?

20 years later still no airliner manufacturer to follow the Airbus sidestick philosophy !?
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Old 16th Apr 2007, 08:55
  #103 (permalink)  
 
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If it can match the old technology only by adding instruments and procedurs, isn't it actually worse?
Nope, just different.

There are several examples where a force-feedback control would actually be more dangerous than less in the event of a malfunction.

Airbus took a radical option with sidesticks.
I believe they did not consult properly.
They did not evaluate properly.
Pilots were not central parameters in the equation.
AI was already betting on a single pilot operation,
just waiting for the day they simply would do without.
With all due respect, what utter rubbish.

Yet again you say the same thing over and over without a shred of proof other than your 'opinion'. Having spoken to some of the people who worked on the project, pilots were no less central in the equation than anyone else in the airline industry. That 'AI was .. betting on single pilot operation' is a terrible slur and utterly unfounded.
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Old 17th Apr 2007, 01:33
  #104 (permalink)  
 
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CONF, is it that your opinions are set in concrete and you are in denial? I have a lot (and I mean a lot) of experience on conventional control systems and around 4000hrs Airbus. I believe the 330/340 generation is head and shoulders above the 767/747 generation and are a significant step forward. As I have mentioned in previous posts I cannot compare 777. I believe however that control wheels will go the way of the old wooden wheels on the tall ships of old. Boeing commercial are shackled by their own history. Unfortunately there is no other American manufacturer of airliners. There should be.
20 years later still no airliner manufacturer to follow the Airbus sidestick philosophy !?
I wonder why? And I really wonder why when I see 744 pilots trying to acheive a constant 2.5deg rate of rotation to the takeoff attitude with often variable results due to feedback producing changing control column forces as the aircraft rotates through the 10deg area. Ugly!
I could go on and on.
CONF, if you believe that there is no further development in aviation (single pilot or even no pilot) then I will let you reflect on the fact that as a young first officer I flew on two occasions with a Flight Navigator, once even with a Radio Operator, and many times with Flight Engineers. Most of these gentlemen are now engaged in other pursuits. One of the first uses for military aircraft was visual recconaisance. This fine art is now entirely (in modern armies at least) in the hands of pilotless aircraft and the miriad of sensors with which they can be equiped. These drones do a better job than the O1-A or OH 1. Alas, believe me, they do, they really do! So - NEVER SAY NEVER!
Once again, happy landings.
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Old 17th Apr 2007, 04:03
  #105 (permalink)  
 
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Interesting to note that Embraer went into cockpit design of the 190 with a clean sheet of paper and decided on ram's horn control columns. They surveyed pilots and the control column was the most favourable form of control device with the ram horn design being the most ergonomic!
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Old 17th Apr 2007, 08:48
  #106 (permalink)  
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Try eating your lunch on the rams horn, lol. So much for ergonomics.
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Old 17th Apr 2007, 09:01
  #107 (permalink)  
 
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so i take it that the French are more into dining than crossmonitoring on the job ............ more lol
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Old 18th Apr 2007, 00:53
  #108 (permalink)  
 
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A fellow aviator on an AB course asked the trainer what the table was stressed to. After a short silence the trainer admitted he was not sure,but "It will take the weight of an Air Inter flight attendant." Roll on Boeing sidesticks!
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Old 18th Apr 2007, 03:02
  #109 (permalink)  
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... don't do that .... I near choked on my coffee ....
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Old 20th Apr 2007, 06:47
  #110 (permalink)  
 
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Norbert Jacquet always questioned Airbus FBW computers. The first time, in 1988, after the Habsheim crash: http://jacno.com/an00.htm (extracts: “An abnormal limitation by the computer of the pilot’s action on the flight controls etc.” ... “an order of the computers to land” etc.

Difference between Airbus and Boeing controls? Norbert Jacquet is jailed to silence him!: http://www.pprune.org/forums/showthread.php?t=272603
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