Reverse Thrust Video

[John H Watson]

An interesting video on the mechanical and electromechanical interlocks on the reverse levers:

https://www.youtube.com/watch?v=DhkU4_tSOis

I don't remember the idle/full reverse interlocks being so noisy (at 04:49 in the video).

[Martin Baker]

I love this guy's videos...

Later!

[andmiz]

The sim's an old girl...

[Hardy Heinlin]

In this video the white command thrust cursors on the EICAS disappear during reverser operation. This isn't the case in PSX. I can't remember if this is model specific. Any comments?

On RR and PW models I know that the cursors disappear when the EECs are in ALTN mode anyway. As we know, this is not the case on the GE as the GE commands N1 instead of EPR.


Regards,

|-|ardy

[John H Watson]

That sim is an RR-powered aircraft (Cathay Pacific VH-HUD... Selcal AF-BK)

Can't find any clear photos of the displays during reverser ops.

Off topic... Just noticed in an old photo, the APU oil quantity (only) on the Status Page is shown with the Ground Test Enable switch on. All APU parameters appear in PSX.  Maybe the APU switch also needs to be in RUN (but not started) to get all parameters. I seem to recall all sorts of weird logic for the APU parameter display (including time delays).

[Hardy Heinlin]

Off topic... Just noticed in an old photo, the APU oil quantity (only) on the Status Page is shown with the Ground Test Enable switch on. All APU parameters appear in PSX.

Are you sure the Ground Test Enable switch is on? I remember your photo; I think it was shot a minute after APU shutdown and is not related to the test switch. When the other APU parameters disappear, the oil display will stay for another minute or so. This effect also occurs in PSX.

[b744erf]

An off topic reply....
To mention it again, you will find all the Cathay Pacific 744 equipped RB211-524H. You may also find in some pics or videos that the ENG STSRT panel is exactly the PW version ( No AutoStart,  Auto ignition selector 1-Both-2).  Maybe we could have such setup in PSX some day. :p

[Hardy Heinlin]

The engine model specific ignition systems are very complicated (see pages 518, 519, 520 in the PSX manual to get a rough overview); it's not just about panel design. I don't think I will add further options just by referring to pictures. PSX models every relay and component and detail of original ignition schematics that interact with engine model specific parameters. Intermixing this stuff based on theories would lead to chaos. I can only add further options if there are original schematics available; however, such work would take months, and that's again something I cannot do free of charge, unfortunately.

[John H Watson]

Are you sure the Ground Test Enable switch is on? I remember your photo; I think it was shot a minute after APU shutdown and is not related to the test switch. When the other APU parameters disappear, the oil display will stay for another minute or so. This effect also occurs in PSX.

The photo I have shows a Status message for the Ground Test switch being in use. I'm not sure if there are any other variables. Looking at the other Status messages, there were probably some CB's pulled.

The photo looks familiar. Perhaps one of the candidates for the PS1 manual? 

[Hardy Heinlin]

I don't know ... I better keep it as is until it's clearly proven wrong.

[John H Watson]

An off topic reply....
To mention it again, you will find all the Cathay Pacific 744 equipped RB211-524H.

Are you saying all Cathay 744's are RR's or all their RR's are -524H?

Here's a P&W-powered Cathay 744.

https://www.airliners.net/photo/Cathay-Pacific-Airways/Boeing-747-412/903775

[andrej]

John,

original -467s and -467Fs were RR powered. CX purchased used -400s (including -412s from SIA and those were P&W). If I recall correctly, it even operated GE powered planes (those were converted planes).

Currently CX only has -467ERFs and those are P&W powered planes (in terms of -400 series).

Source:
Current Fleet: https://www.airfleets.net/flottecie/Cathay%20Pacific-active-b747.htm
Historical Fleet: https://www.airfleets.net/flottecie/Cathay%20Pacific-history-b747.htm
Scrapped: https://www.airfleets.net/flottecie/Cathay%20Pacific-stored-b747.htm

Best,

[Hardy Heinlin]

So when you see a Cathay overhead panel with "PW style" ignition controls, you can assume this aircraft is indeed powered by PW engines, so it's not a mixed combination of PW ignition systems and RR turbines.


Back on topic:
Are there no further real-world hints regarding the EICAS thrust cursor display during REV operation?


PSX update 10.151 will be finished soon, and I could include a cursor modification in this update.


|-|ardy

[John H Watson]

So when you see a Cathay overhead panel with "PW style" ignition controls, you can assume this aircraft is indeed powered by PW engines, so it's not a mixed combination of PW ignition systems and RR turbines.

The early 744s (including Qantas and BA) had RR-powered aircraft with a non-Autostart panel with a simplified ignition switch which looks like the PW panel, but there are no 4 separate Autostart switches like the PW. Both airlines retrofitted their aircraft with Autostart panels. Probably Cathay did, too, on their RR aircraft. PW would also have had no Autostart at all at some point.

I only have a simplified wiring schematic for these old RR panels.

[b744erf]

So when you see a Cathay overhead panel with "PW style" ignition controls, you can assume this aircraft is indeed powered by PW engines, so it's not a mixed combination of PW ignition systems and RR turbines.

Hello Hardy
Sorry for my off topic. I have to make a clear that I am pretty sure that all Cathay 747-467 with RR engines are 524H version ( Reg. number are B-HU? and B-HO?). And all they don't equip AutoStart. And all their EngStart panel are same as the PW version.

https://www.jetphotos.com/photo/6997636

https://www.jetphotos.com/photo/8411747

https://www.jetphotos.com/photo/10302232

https://www.airliners.net/photo/Cathay-Pacific-Airways/Boeing-747-467/5991871/L?qsp=eJxtjjEOwjAMRe/y5w4NoEpkowyMdOACVmLaSKWJHA9UVe9OaCUmtqf3rC8vcHFSfutjTgyLzCRuQIVEQq8Mu4CCOKGntpSD288OJ3OufuHGE8v/BGtqUxeRhqjxSsp9lBm2qZCjaFsQvtiLc5yUPXZ/F8/yTZzd9ktflk0Blm5jHJvifchppG2DlcKIdf0AtWJE3Q%3D%3D

https://www.airliners.net/photo/Cathay-Pacific-Airways/Boeing-747-467/2586580/L?qsp=eJxtjjEOwjAMRe/y5w4NoEpkowyMdOACVmLaSKWJHA9UVe9OaCUmtqf3rC8vcHFSfutjTgyLzCRuQIVEQq8Mu4CCOKGntpSD288OJ3OufuHGE8v/BGtqUxeRhqjxSsp9lBm2qZCjaFsQvtiLc5yUPXZ/F8/yTZzd9ktflk0Blm5jHJvifchppG2DlcKIdf0AtWJE3Q%3D%3D

You may confirm the plane equipped RR engines from the Fire Protection Panel.
You may confirm the EngStart Panel are PW version.

I know it will be a huge work to make any change to this. It does not affect our normal use. Don't worry.

I just have such question... I always find the 744 with RR equipped AutoStart function,  and the panel are exactly the same as the PSX RR panel. But I can only find a 744 RR without AutoStart in Cathay fleet. And they never use the psx rr (without AutoStart) panel, but the PW panel.  Is that true that the RR without AutoStart always come with a PW version panel?

Sorry for off topic again...

Regards

Jack

[Hardy Heinlin]

Hi Jack,

I was referring to the ignition system. Now we're talking about the autostart system. In PSX you can install the autostart system of your choice independently of your installed engine model.
You can select:
• 4 switches
• One master switch
• None


Regards,

|-|ardy

[John H Watson]

We should probably ask if the RR non-Autostart panels have ever had a 1-NORM-2-BOTH selector.

And the PW panel probably shouldn't have the option of having one autostart switch in PSX. 

I can't find any PW non-Autostart schematics to compare it with the BA non-Autostart system.

[Panos Bilios]

Hi

Althougt I am not 100% sure it does seem in this video
that the white command thrust cursors do disappear during reverser operations

https://www.youtube.com/watch?v=EafvR607kb0


Regards
Panos

[Hardy Heinlin]

Thank you, Panos. I just made some screenshots and increased the contrast, and it's still hard to tell the difference between REV and normal mode. But I think I only see a blurred, tiny little edge of a cursor when the mode is normal or amber REV. So I guess the cursor disappears when in green REV.


Regards,

|-|ardy


Edit: But in that sim video it already disappears in amber REV. I'll take that as a reference because it's sharper :-)

[Hardy Heinlin]

The cursors are now removed during REV operation in PSX 10.151:

https://aerowinx.com/board/index.php?topic=4191.0


Regards,

|-|ardy