744 Forum

Apron => Hangar 7 => Topic started by: pcpilot on Fri, 8 Jan 2016 19:40

Title: The Fifth Pod
Post by: pcpilot on Fri, 8 Jan 2016 19:40
A interesting article/video of Qantas delivering an engine to Johannesburg.

http://tinyurl.com/hlqgf33

Graham
Title: Re: The Fifth Pod
Post by: Hessel Oosten on Fri, 8 Jan 2016 19:56
Great to see ! Thanks.

I've never seen this in PSX....

May be you discovered here a big bug..., that this feature is not implemented....  ;)......(yet).

Hessel
Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Fri, 8 Jan 2016 21:29
Page 323:

QuoteLimitations in the Simulator:

... spare engine carriage operation is not modeled.

:-)
Title: Re: The Fifth Pod
Post by: John H Watson on Fri, 8 Jan 2016 23:25
A switch in the Main Equipment Centre configures the automatics for 5th pod carriage... limiting such things as Vmo

(http://www.iinet.net.au/~b744er@ozemail.com.au/5thPod/IDENTPageSPAREENGINE.jpg)

(http://www.iinet.net.au/~b744er@ozemail.com.au/5thPod/VMOSpareEngineMemo.JPG)

(http://www.iinet.net.au/~b744er@ozemail.com.au/5thPod/5thPod.jpg)






Title: Re: The Fifth Pod
Post by: Hessel Oosten on Sat, 9 Jan 2016 10:48
Hardy,

Ha, ha..., as I (pre)cautiously wrote: "Not yet"....
You won  :D

Hessel
Title: Re: The Fifth Pod
Post by: Hessel Oosten on Sat, 9 Jan 2016 11:00
Is there anyone here who has ever seen this as an:

addon aircraft for our scenery generator(s) ?

José maybe ?

Hessel
Title: Re: The Fifth Pod
Post by: Britjet on Sat, 9 Jan 2016 17:37
Never seen it as an add-on - but I've done it for real ...;-)
Peter
Title: Re: The Fifth Pod
Post by: Avi on Sat, 9 Jan 2016 18:24
When is Easter?

(http://www.hoppie.nl/forum/var/AA_psx1.jpg)
Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Sat, 9 Jan 2016 18:48
How much rudder trim is required?

How much aileron trim is required?

How much fuel flow correction is required?

How much drag correction is required?

What's the additional weight?

Is it always under the left wing? Is left or right side selectable?

What's the VMO then?


|-|ardy

Title: Re: The Fifth Pod
Post by: James H on Sun, 10 Jan 2016 04:14
Hi all,

When VH-OJS operated the QFA63 flight, it was negative RVSM. Does anyone have an insight into why this would be? OJS is ordinarily RVSM approved.

James.
Title: Re: The Fifth Pod
Post by: John H Watson on Sun, 10 Jan 2016 08:07
QuoteWhat's the additional weight?

The video mentions the weight. It should be around the same weight as an engine. The fan blades and engine hydraulic pump are removed, but then additional cowlings are added for streamlining. I understand PW's can be carried as well as RB211's.

QuoteIs it always under the left wing? Is left or right side selectable?

Only the left wing.

QuoteWhat's the VMO then?

330kts to 29,272.5', then 0.85 mach.

I don't have any values for trim, etc, but the support strut for the spare engine is only about 15' from the fuselage skin to keep yawing to a minimum.

Rgds
JHW




Title: The fifth engine....
Post by: cagarini on Sun, 17 Jan 2016 09:04
http://www.simflight.com/2016/01/16/pmdg-747-v2-unusual-update/#more-54280
Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Sun, 17 Jan 2016 09:53
jcomm, I just merged your new thread with this thread. It's the same subject (unless it was intended for promo).
Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Sun, 17 Jan 2016 10:07
Quote from: John H Watson on Sun, 10 Jan 2016 08:07
QuoteWhat's the additional weight?

The video mentions the weight. It should be around the same weight as an engine. The fan blades and engine hydraulic pump are removed, but then additional cowlings are added for streamlining. I understand PW's can be carried as well as RB211's.

He says "around 6 tons, just a little bit over". If I use an average of 6200 kg for all both* engine models, I guess that would be a reasonable figure. It just affects the minimum limit on the Instructor's ZFW scale anyway, as the ZFW remains flexible.


Cheers,

|-|ardy


* I just learned that GE engines "cannot be carried as a spare, as due to their design, there is a lack of ground clearance once mounted to the wing".
Title: Re: The Fifth Pod
Post by: cagarini on Sun, 17 Jan 2016 11:42
Quote from: Hardy Heinlin on Sun, 17 Jan 2016 09:53
jcomm, I just merged your new thread with this thread. It's the same subject (unless it was intended for promo).

Hardy,

I didn't see this thread before I posted mine.

Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Sun, 17 Jan 2016 17:19
5th pod carriage option now available in PSX 10.0.7-beta1:

http://aerowinx.com/board/index.php?topic=3388.0

Note that FMC mods re internal FF, drag, and ECON SPD logic for 5th pod is not yet implemented.


|-|ardy
Title: Re: The Fifth Pod
Post by: Hessel Oosten on Sun, 17 Jan 2016 18:43
My goodness !!!

Some things are unbelievable, this is one of them.

H.
Title: Re: The Fifth Pod
Post by: cagarini on Sun, 17 Jan 2016 19:49
That's.... FAST!

Thx HH!
Title: Re: The Fifth Pod
Post by: Hessel Oosten on Sun, 17 Jan 2016 20:59
Hardy,

Could you please give some clues, where to find the model with the 5 th pod.
I cannot find it.

Hessel
Title: Re: The Fifth Pod
Post by: Will on Sun, 17 Jan 2016 21:05
You can add a fifth pod to the aircraft of your choice.

Instructor --> Situation --> Aerodynamics, then check the option on the top center of the page.
Title: Re: The Fifth Pod
Post by: Hessel Oosten on Sun, 17 Jan 2016 21:38
Bingo.

Thanks Will.

Hessel
Title: Re: The Fifth Pod
Post by: DougSnow on Mon, 18 Jan 2016 01:06
I'll work up a PFPX profile addition for 5th pod probably next weekend.  I have the requisite data for it, just never created it.

Note that is only supported with LRC, and no other speed schedule.
Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Mon, 18 Jan 2016 06:27
Quote from: DougSnow on Mon, 18 Jan 2016 01:06
Note that is only supported with LRC, and no other speed schedule.

Yes, noted, among other things ...


|-|
Title: Re: The Fifth Pod
Post by: Hessel Oosten on Mon, 18 Jan 2016 12:03
Here some interesting reading about "our"  ;) 5 th pod.
Also with some technical data.

http://tinyurl.com/heelbkk (http://tinyurl.com/heelbkk)

Hessel
Title: Re: The Fifth Pod
Post by: cagarini on Wed, 20 Jan 2016 10:29
I find the effects of the "fifth pod" very plausibly modeled, in as far as drag, and other aerodynamics effects are concerned.

Been playing with the "tick" box in "Aerodynamics" from cruise flight states. Appears beautifully modeled !

Title: Re: The Fifth Pod
Post by: asboyd on Wed, 20 Jan 2016 10:42
I am using Beta 7c and the 5th pod check box is greyed out. Do you have to have a specific model loaded?
Cheers,
Alex
Title: Re: The Fifth Pod
Post by: G-CIVA on Wed, 20 Jan 2016 11:53
Quote from: asboyd on Wed, 20 Jan 2016 10:42
I am using Beta 7c and the 5th pod check box is greyed out. Do you have to have a specific model loaded?

Only RR & PW engined airframes are capable of V-Pod operations ....

Quote from: Hardy Heinlin on Sun, 17 Jan 2016 10:07
* I just learned that GE engines "cannot be carried as a spare, as due to their design, there is a lack of ground clearance once mounted to the wing".

See also the Beta update 10.0.7 Beta 2:

10.0.7.0007. 5th engine carriage is now disabled on GE powered aircraft.

http://aerowinx.com/board/index.php?topic=3388.0
Title: Re: The Fifth Pod
Post by: asboyd on Wed, 20 Jan 2016 23:03
Cool, thank you for the info.
AB
Title: Re: The Fifth Pod
Post by: Mariano on Sun, 24 Jan 2016 15:06
Doug,

Do you have a link from where I can download your PFPX profile?

Have you created an ER profile by any chance?

Thank you in advance,

Mariano
Title: Re: The Fifth Pod
Post by: DougSnow on Fri, 29 Jan 2016 09:37
-ER data simply isnt available.  I have asked my sources ad nauseum.  Noone has the DAT file needed. But, I am keeping watch...

I didnt get a chance last weekend - I am going to hope that I can this weekend. I create the raw tables, then someone I know will have to add it to the user performance data file. 

The tool I use requires a lot of modifications in the input file to correctly model the drag polars, and there are several corrections required, so it isnt something that I should hand out...

Soon
Title: Re: The Fifth Pod
Post by: Hardy Heinlin on Fri, 1 Feb 2019 13:50
(The last comment above was posted 3 years ago.)


Here's another (cosmetical) question:

As we know, when the spare engine carriage mode is active, the FMC IDENT page indicates "ACTIVE" in line 5R.
"DRAG/FF" is at 3L.

Now the NG FMC's IDENT page has the "DRAG/FF" at 5R.
Does that mean the NG FMC has the spare engine stuff at 3L?

Does anybody know?

I think for the 744 NG FMC they carried over some stuff from the 777 FMC. But in this case they ignored the spare engine option. The 777 cannot do this, right?


Regards,

|-|ardy
Title: Re: The Fifth Pod
Post by: G-CIVA on Fri, 1 Feb 2019 14:06
Quote from: Hardy Heinlin on Fri,  1 Feb 2019 13:50The 777 cannot do this, right?

I'll put $10 USD right down now & say none of the 777 variants can  ;)
Title: Re: The Fifth Pod
Post by: DougSnow on Fri, 1 Feb 2019 22:29
Not a chance...