C Series Info
#2582
First, trim control buttons on the stick doesn't mean it can't auto trim. Why did airbus choose a big wheely thing anyhow?
Second, the auto trim on the 320 is a 20th century FBW interface. The convenience of having a computer trim for you is a huge trade-off. The pilot is completely disconnected from the haptic feedback of feeling the forces on the control surfaces. Much like the autothrust does with engine status compared to an auto throttle. Airbus had to revert to an uncommanded pitch down on landing in order to simulate ground effect, so pilots could routinely flare smoothly. Putting manual trim back into the equation allows the fly-by-wire system the capability to add higher level functions that produce artificial control feel. The end product is an intuitive hand flying experience, capable of being flown smoother, with every gust or sinker felt in your hand before you view it on the airspeed tape. Unfortunately that capability may require a few quick flips of the thumb on the trim switch during a stretch of hand flying. Having flown both FBW styles, I'd take control feel over auto-trim.
Second, the auto trim on the 320 is a 20th century FBW interface. The convenience of having a computer trim for you is a huge trade-off. The pilot is completely disconnected from the haptic feedback of feeling the forces on the control surfaces. Much like the autothrust does with engine status compared to an auto throttle. Airbus had to revert to an uncommanded pitch down on landing in order to simulate ground effect, so pilots could routinely flare smoothly. Putting manual trim back into the equation allows the fly-by-wire system the capability to add higher level functions that produce artificial control feel. The end product is an intuitive hand flying experience, capable of being flown smoother, with every gust or sinker felt in your hand before you view it on the airspeed tape. Unfortunately that capability may require a few quick flips of the thumb on the trim switch during a stretch of hand flying. Having flown both FBW styles, I'd take control feel over auto-trim.
#2583
Gets Weekends Off
Joined APC: Jul 2010
Position: window seat
Posts: 12,534
First, trim control buttons on the stick doesn't mean it can't auto trim. Why did airbus choose a big wheely thing anyhow?
Second, the auto trim on the 320 is a 20th century FBW interface. The convenience of having a computer trim for you is a huge trade-off. The pilot is completely disconnected from the haptic feedback of feeling the forces on the control surfaces. Much like the autothrust does with engine status compared to an auto throttle. Airbus had to revert to an uncommanded pitch down on landing in order to simulate ground effect, so pilots could routinely flare smoothly. Putting manual trim back into the equation allows the fly-by-wire system the capability to add higher level functions that produce artificial control feel. The end product is an intuitive hand flying experience, capable of being flown smoother, with every gust or sinker felt in your hand before you view it on the airspeed tape. Unfortunately that capability may require a few quick flips of the thumb on the trim switch during a stretch of hand flying. Having flown both FBW styles, I'd take control feel over auto-trim.
Second, the auto trim on the 320 is a 20th century FBW interface. The convenience of having a computer trim for you is a huge trade-off. The pilot is completely disconnected from the haptic feedback of feeling the forces on the control surfaces. Much like the autothrust does with engine status compared to an auto throttle. Airbus had to revert to an uncommanded pitch down on landing in order to simulate ground effect, so pilots could routinely flare smoothly. Putting manual trim back into the equation allows the fly-by-wire system the capability to add higher level functions that produce artificial control feel. The end product is an intuitive hand flying experience, capable of being flown smoother, with every gust or sinker felt in your hand before you view it on the airspeed tape. Unfortunately that capability may require a few quick flips of the thumb on the trim switch during a stretch of hand flying. Having flown both FBW styles, I'd take control feel over auto-trim.
#2584
Not that you do this in the plane but it is cool with the autopilot off that you could trombone the thrust lever from idle to toga back to idle and it compensates and remains nearly flat. Or toga on one engine and idle on the other and it compensates in roll and pitch to no more than 5 degrees ish bank. Alternate law it rolls over quicker than Jeff Sessions because it is an airplane.
#2585
Can't abide NAI
Joined APC: Jun 2007
Position: Douglas Aerospace post production Flight Test & Work Around Engineering bulletin dissembler
Posts: 12,012
Not that you do this in the plane but it is cool with the autopilot off that you could trombone the thrust lever from idle to toga back to idle and it compensates and remains nearly flat. Or toga on one engine and idle on the other and it compensates in roll and pitch to no more than 5 degrees ish bank. Alternate law it rolls over quicker than Jeff Sessions because it is an airplane.
#2586
Can't abide NAI
Joined APC: Jun 2007
Position: Douglas Aerospace post production Flight Test & Work Around Engineering bulletin dissembler
Posts: 12,012
Can anyone speak to their impression of the cockpit? I'm guessing no one one here has actually been in the real cockpit, but perhaps the simulator. I've read through most of these pages but don't see much discussion it.
Aka, has anyone read anything about comfortability of the cockpit (noise, seats, space...). It seems like people have tons of bad things to say about the 73, and more positive things to say about the 320...so I'm wondering where the C-series is going to fit in along that spectrum.
Aka, has anyone read anything about comfortability of the cockpit (noise, seats, space...). It seems like people have tons of bad things to say about the 73, and more positive things to say about the 320...so I'm wondering where the C-series is going to fit in along that spectrum.
It is supposed to be quiet.
#2588
Gets Weekends Off
Joined APC: Feb 2008
Posts: 19,386
#2590
Thread
Thread Starter
Forum
Replies
Last Post