Posts: 1782
Joined: Fri Feb 04, 2000 11:11 pm

Demonstrating Airbus FBW

Sat Feb 23, 2002 11:02 pm

From PPRuNe:

..."I used to demonstrate in the A320 sim the following to people who were not familiar to airbus fbw aircraft.
T/off, cut one engine at V1+5, rotate to full backstick and let go of the controls (and I mean everything, no rudder, no stick , no power, no autopilot). What happens is the full back stick causes the aircraft to go into the low speed regime (alph protection), alpha floor activates, the aircraft applies TOGA to the live engine, establishes into a 5 degree bank and speed remains at bottom of Vls. The aircraft maintains this attitude and speed/power settings and establishes into a 5 degree climbing turn into the dead engine, until it can climb no more. Quite impressive when you see it first time. It will then sit there turning until it either runs out of fuel or the good engine fails.".....

To me, this is very, very cool.
marc kobaissi
Posts: 107
Joined: Thu Mar 29, 2001 2:31 pm

RE: Demonstrating Airbus FBW

Sat Feb 23, 2002 11:26 pm

Yeah, I just love airplanes that do things on their own with the autopilot DEACTIVATED.

To me, this is very very stupid.

Posts: 1502
Joined: Tue Feb 12, 2002 8:27 am

RE: Demonstrating Airbus FBW

Sat Feb 23, 2002 11:36 pm

I love fly-by-wire airplanes. The wire is connected to the yoke. The wire then travels back to the elevators and ailerons. When I pull on the yoke, the wire moves pulleys and other wires move the control surfaces. What's the problem with fly-by-wire?TC
FL450, M.85
Posts: 2166
Joined: Thu Feb 07, 2002 9:51 pm

RE: Demonstrating Airbus FBW

Sat Feb 23, 2002 11:41 pm

all aircraft do something on their own in a V1+5 cut with the autopilot deactivated if you don't interfer with the controls yourself. The Cool Thing(tm) here is that the 'bus in fact does something useful and survivable, where most other aircraft would fall out of the sky in various unpleasant ways.

Oh well, I guess you prefer being scattered over the terrain in very, very small chunks to flying around in lazy circles. An interesting choice indeed!

I thought I was doing good trying to avoid those airport hotels... and look at me now.
Posts: 1782
Joined: Fri Feb 04, 2000 11:11 pm

RE: Demonstrating Airbus FBW

Sat Feb 23, 2002 11:43 pm

Well, if you look at the Trident accident at Staines in 1976 (?) this sort of system would have prevented the accident. In the accident, the Captain, and pilot flying, was incapacitated due to a heart attack, the FO did not know that the slats were retracted and the aircraft entered a stall, causing the death of everyone on board.

LOL, AA717driver.

However, before this gets out of hand, I don't think this is any better than any other system, I just think it's cool/sophisticated from an automation viewpoint, if you are interested in computing.