Embraer E2 flight control logic

[FlyingBlueKLM 0]

Hi there,

I’m a new member and I’m not sure where to post this. I want to know if there is any site that covers the E2 flight control logic in high detail. I do know that the E2 has full flight envelope protection, and I do know that the yoke doesn’t move when the AP is engaged.

Here are all my questions:

Can the FCMs in the E2 override any excessive pilot input in normal mode? I expect that they can because the E2 FBW is, from what I understand, like the FBW in the Embraer Legacy 500, and the E2 FBW has full envelope procetion, and the E2 has full FBW.

There is some information about the E2 FBW on this page, and it mentions the Legacy 500: http://www.embraercommercialjets.com/Pages/Ejets-175-E2.aspx

Does the E2 have an electronic checklist and do pilots use it? Does the E2 have a derotation system so that the computers will derotate the nose if the PF doesn’t?

Thanks in advance.

Kind regards,

FlyingBlueKLM

Edited February 14, 2020 by FlyingBlueKLM

[Chock 17,769]

Here you go, this should help:

http://www.smartcockpit.com/docs/Embraer_190-Flight_Controls.pdf

[FlyingBlueKLM 0]

Just now, Chock said:

Here you go, this should help:

http://www.smartcockpit.com/docs/Embraer_190-Flight_Controls.pdf

That is about the E1, not the E2, the E2 has a different FBW system than the E1.

[Chock 17,769]

Yes, it does, but the E1 and E2 share a common type rating. So common in fact that the conversion to the newer aircraft only takes about three days to study some stuff, but very little in the simulator.

Here's a quote from Alexandre de Figueiredo, vice president of flight operation, ground and flight testing for Embraer on that exact subject when they introduced the E2 series: 'The one thing that is extremely important to us is to have commonality of operations with the E1. So, regardless what we’re doing, we’re keeping the same human-machine interface and behavior of the airplane to have as common an operation as possible,'

Creating the E2 basically followed the same procedure as McDonnell Douglas did with the DC-10 when they turned it into the MD-11, i.e. they made the horizontal stabiliser smaller to reduce the tail down force and therefore reduce the drag and weight, making it more fuel-efficient. Sure they changed a bunch of other stuff too, but that was the main thing which had the potential to change the E2's flight characteristics, so that's why it has some flight protection built in and FBW to make it handle the same, which they achieved because he fact that it has a common type rating means that it retains much of the same behaviour as the earlier model, which is why I suggested that PDF might help. I know it's not for the E1 specifically.

Edited February 14, 2020 by Chock

[FlyingBlueKLM 0]

1 hour ago, Chock said:

Yes, it does, but the E1 and E2 share a common type rating. So common in fact that the conversion to the newer aircraft only takes about three days to study some stuff, but very little in the simulator.

Here's a quote from Alexandre de Figueiredo, vice president of flight operation, ground and flight testing for Embraer on that exact subject when they introduced the E2 series: 'The one thing that is extremely important to us is to have commonality of operations with the E1. So, regardless what we’re doing, we’re keeping the same human-machine interface and behavior of the airplane to have as common an operation as possible,'

Creating the E2 basically followed the same procedure as McDonnell Douglas did with the DC-10 when they turned it into the MD-11, i.e. they made the horizontal stabiliser smaller to reduce the tail down force and therefore reduce the drag and weight, making it more fuel-efficient. Sure they changed a bunch of other stuff too, but that was the main thing which had the potential to change the E2's flight characteristics, so that's why it has some flight protection built in and FBW to make it handle the same, which they achieved because he fact that it has a common type rating means that it retains much of the same behaviour as the earlier model, which is why I suggested that PDF might help. I know it's not for the E1 specifically.

As far as I know, flight envelope protection (not to be confused with FBW) has been introduced with the E2, and at least in the E1, the FCM cannot override any pilot input, and I’m curious if the FCM can override any pilot input in the E2. I don’t know the exact differences between the 3rd gen FBW (E1) and the 4th gen FBW (E2), but to me it sounds like Embraer is not marketing the new FBW as a minor change, and that they’re not marketing it as a major change. To me it sounds like Embraer is marketing the 4th gen FBW that is in the E2 like a ‘medium’ upgrade compared to the 3rd gen FBW that is in the E1.

I also think that what Embraer is marketing as a medium upgrade in my opinion could be a minor upgrade in reality, because it’s marketing. I do understand that cockpit commonality is very important.

Important edit:

I’m not denying any facts, I have questions about the E2, and even though nobody said I’m denying facts, I just want to make this clear before anyone thinks I’m doing it.

Edited February 14, 2020 by FlyingBlueKLM