Uniuniunium From United States of America, joined Oct 2005, 31 posts, RR: 0
Reply 4, posted (9 years 3 months 2 weeks 5 days 23 hours ago) and read 7446 times:
IIRC, the older Busses had trim wheels next to the thrust levers as backup if the autotrim failed. I think there may be an alternate trim switch (similar to what you see on newer B767s and B777s) located right above the rudder trim switch dead center on the console at the bottom of the picture.
ElGreco From France, joined Nov 2005, 164 posts, RR: 1
Reply 5, posted (9 years 3 months 2 weeks 5 days 23 hours ago) and read 7420 times:
Quoting Keta (Thread starter): Also, are the keyboard and the screens part of the equipment of the A380 or are they for testing only?
The A380 try to become the first plane really without paper in the cokpit, so that's why the put directly keyboard for both pilot and copilot, they will be retractable.
You also can see on your picture the TACS system where cameras with optical cables give very nice view of the planes from the rear top and below the plane just after the front landing gear. Already available on 345 and 346, it's a good help for pilots on the ground but it's also possible to give image on IFE system (this is already happen on some airlines by the camera with optical link here give an incredible quality).
For the wheel, I'm not sure, but may be we need to see an other one picture.
EMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 12, posted (9 years 3 months 2 weeks 4 days 17 hours ago) and read 7159 times:
Quoting Keta (Thread starter): I noticed that there is no trim wheel like that seen in other Airbus' planes. So how is the trim controlled?
As was said above, most modern aircraft built in the last 20 years do not have a trim wheel. Trim, along with roll and pitch are adjusted and controlled with toggle switchs on the center console. Some even have a second thumb switch on the yoke.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
Beowulf From Singapore, joined Jul 2003, 737 posts, RR: 13
Reply 17, posted (9 years 3 months 2 weeks 4 days 1 hour ago) and read 7005 times:
Quoting Keta (Reply 16):
Quoting Dogfighter2111 (Reply 8):
If i'[m not mistakem, i'd say they are using Microsoft Windows for the computer at both sides.
Yeah, it looks like. But I definitely hope they don't! I wouldn't want to have to restart the flight while on the air!
While I am certainly not defending Microsoft, you have to look very carefully at what's causing an operating system to crash. Is it really the OS that crashes or is it rather an application running, which makes the OS go blue. Often it's also hardware/drivers causing trouble.*) So, for critical systems only certified applications and hardware are allowed. Developing your own operating system is costly; no one does it unless they have to. Remember, we are talking of this screen with a keyboard here and not about the computers that control flight dynamics.
*) An example: I am running OpenBSD, a sturdy "UNIX" flavor, on my laptop when it crashed. But in fact the XServer, an application, crashed and, but the operating system still worked because I could log in via ssh and reboot the box.
BuckFifty From Canada, joined Oct 2001, 1316 posts, RR: 19
Reply 18, posted (9 years 3 months 2 weeks 3 days 23 hours ago) and read 6969 times:
Quoting A342 (Reply 10): Yes. Mechanic trim wheels are not used anymore since the A340-500/-600/-300E came into production. IIRC, they´re also deleted on new A330s. As Starlionblue said, there are electronic trim buttons.
That is not true at all. Trim wheels are still used on all those aircraft. The 346's I fly still has the trim wheel, albeit the trim setting after the engine start has now become automatic.
The 380 is the first Airbus that will not have a trim wheel, instead relying on electrical motors which will activate the control surfaces during an emergency. However, I'm not conversant as to how this system works in it's entirety, someone else can perhaps explain this issue better.
The trim wheels on the other Airbii do not have much of a function, except to set the trim setting after the engine start, trim the aircraft when it is in direct law (with an accompanying ECAM message telling you to do so), and to control the stab trim in case of a full electrical and hydraulic failure. In the Airbus event timeline, this is called a mechanical backup, as the aircraft can only be controlled by the trim wheel and rudders only. In all other circumstances, Airbuses are all fully trimmed automatically, unlike Boeings, where pitch trim is either full manual or semi-auto.
CCA From Hong Kong, joined Oct 2002, 854 posts, RR: 14
Reply 19, posted (9 years 3 months 2 weeks 3 days 21 hours ago) and read 6947 times:
Quoting BuckFifty (Reply 18): to control the stab trim in case of a full electrical and hydraulic failure. In the Airbus event timeline, this is called a mechanical backup, as the aircraft can only be controlled by the trim wheel and rudders only.
The Airbus control surfaces are ALL:
The stabilizer (and rudder on the A330/340-300) can also be CONTROLLED mechanically not ACTIVATED mechanically.
Prebennorholm From Denmark, joined Mar 2000, 6642 posts, RR: 54
Reply 21, posted (9 years 3 months 2 weeks 3 days 16 hours ago) and read 6889 times:
Quoting Beowulf (Reply 17): While I am certainly not defending Microsoft, you have to look very carefully at what's causing an operating system to crash. Is it really the OS that crashes or is it rather an application running, which makes the OS go blue. Often it's also hardware/drivers causing trouble
It's a Windows feature to crash along with crashing application- or driver software.
It's quite natural. Windows was produced to make it as difficult as possible to run non-Microsoft software. OS to application interface is kept as complicated as possible.
All other operating systems were produced to make it as easy as possible to run foreign applications. OS to application interface is kept as simple as possible.
Always keep your number of landings equal to your number of take-offs, Preben Norholm
XFSUgimpLB41X From United States of America, joined Aug 2000, 4247 posts, RR: 37
Reply 22, posted (9 years 3 months 2 weeks 2 days 15 hours ago) and read 6806 times:
The trim wheel is in the same place as the CRJ.... it doesn't have one.
I don't even think the airbus has "trim" im the common sense of the word- It automatically trims b/c there is no positive control feedback through the stick. We have a normal trim clicker on the yoke- but no wheel... just a digital and tape display of the trim position.