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Author Topic: Catalina PBY/PBN Family of Variants v.4.38 RC  (Read 21396 times)

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Knochenlutscher

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #24 on: November 08, 2020, 06:14:14 PM »

PBN has limit of max. 4000lb, so a 100 kg Bomb can be carried 16 times without fear.
It is even weaker than the 250lb DC of the Brits.

Very cool you researched Dimlee, I'll correct some of the PBN stuff. Found a PLAB-250 that should be fine too.

This looks like PLAB-100, if my Russian is serving well.


Thanks for helping
Cheers
Tobias
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Dreamk

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #25 on: November 09, 2020, 01:43:21 AM »

PLAB-250 was a post war bomb. The PLAB-100 began being tested operationally in 1941 (being initially called MPLAB-100) but, due to production issues, it entered in service  in 1943. The color drawing is indeed a PLAB-100.
The PLB-100 was designed to be dropped from altitudes of 300-800 m
When the PLAB-100 was dropped from the aircraft, the exhaust sling, tearing off the cover, removed the brake parachute from its compartment and after 4-5sec activated the fuse.
The fuse arrangement was double: An AM-A head fuse with a short shank for instant action of the aerial bomb against surface targets and a base hydrostatic AB-87 or VM-7 fuse, activated at periscope depth (these are anti-submarine bombs, not depth bombs).
Here's a detailed drawing and data for this bomb:



There was also the GAB-100, a smoke bomb,  intended for setting up camouflage smoke screens at sea in order to cover the attacks and maneuvers of their ships, that entered service in 1939 (operationally tested from 1936) , then improved in 1944 (GAB-100D)




And these are models of this bombs (From Sergey's exhaustive Soviet Bombs pack that he kindly authorized me to export in Il2 but till now, though I converted the whole pack to 3ds,  I have only exported the Soviet bombs used in Spanish Civil War) - I'll try to export these 2 and make their java next week-end ;)


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cbradbury

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #26 on: November 09, 2020, 01:56:18 AM »

Thanks for the latest update, Tobias - this just keeps getting better and better.
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Knochenlutscher

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #27 on: November 09, 2020, 05:38:39 AM »

I'll try to purchase copies of these Canadian Modelling guides.
Code: [Select]
Aviaeology RCAF Canso A (PBY-5A), Collection 1
Aviaeology RCAF Overseas Catalinas
They hold two valueable Pamphlets of Catalina Resources and Loadout Managment.
When I have a hold on these Magazines I can offer better resources. Sadly it only holds data
for the main Hardpoints Configurations.

I have still no data for the RAF light carrier ordonance system, which we spoke about.


Catalina Mk.I british Mk.XII Torpedo Rack on 333 Sqn Catalina Mk.I


Here's the Gallery at A&A Paintworks:
http://axis-and-allies-paintworks.com/e107_plugins/forum/forum_viewtopic.php?13611


Post war is just right, I found only the stock FAB working, including the Plab 250 we have 3 types of Russian Bombs now.

Looking insane your newest ordonances, these will be just right.
Just take your time, no hurry here.

I hope nobody got offended by accidential kg calculations on my latest
Nomad additions. The 8x500kg will be removed later this week.


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Knochenlutscher

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #28 on: November 09, 2020, 10:39:13 AM »

A 2nd Version of Mk.Ib Radar, from our Betas.
RAF Modification, which saw the aerial round up
like a reeling on the forward fuselage.






Now we only miss the rotable Late PBY-6a Yagi Variant.


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Dreamk

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #29 on: November 09, 2020, 11:43:17 AM »

This is what the RAF called "Light Series carrier". A number could be installed on the same wing enabling to carry 4, 8, 12 or 16 light bombs.







On the Catalina they were probably disposed in 2 rows as the original US small bomb racks


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cbradbury

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #30 on: November 09, 2020, 12:56:29 PM »

Hi Tobias,

hope your eyes are improving a little. I just have a question regarding fuel range on the catalinas. I was flying one this afternoon, and after only 200-300km the fuel was down to about 60%. Obviously this does not reflect the 4000km range of the aircraft. However I was using time acceleration a lot (up to 16X). Does this affect the fuel consumption adversely?

Not really a massive problem - setting 'unlimited fuel' on is not unrealistic as the cat would have more than enough fuel for any IL2 missions - I really don't see mission designer's setting a 2000km each way mission! Just wondering whether the TC has a bug which affects consumption.

Yours.

Clive
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Knochenlutscher

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #31 on: November 09, 2020, 01:57:46 PM »

Wow, insane, exactly Light Series Carrier.
That's what I read in the RCAF article.
Thanks for researching, it's the first time I see this thing in Detail.

That's neat.
 ]wav[

Crad, FM is standin, I can rollback FM to stock FM in next update, when this is such an issue we must do it.
I can't recall the changes I made and obviously it had a reverse effect. ]dontknow[

Before we rollback, can you seat the stock PBY and countertest, I'm curious how that is going.

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cbradbury

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #32 on: November 09, 2020, 02:06:18 PM »

Will do. I'll get back to you.
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cbradbury

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #33 on: November 09, 2020, 02:28:31 PM »

Hi Tobias. Well, the good news is that it isn't you!

Test Parameters:

Map: Svalbard
Altitude: 2000m
Level stabilizer: on
Throttle: 75% (both aircraft climb slightly on this setting with stabilizer on)
Speed: c.150knots (c.280km/hr)
Duration: 60 minutes
Time compression: 16x

I used your PBY 5B (Catalina 1B, 1942), and the default PBY. Both had 55% fuel remaining at the end of the test (default loadouts).

Additional comparison - Short Sunderland. Note that the Sunderland needs to fly with combat flaps to stay airborne on the test parameters, and IAS is slower at test throttle setting (c. 140knots). Fuel remaining = 94%.

Tells me it is unlikely to be a TC bug.
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Knochenlutscher

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #34 on: November 09, 2020, 02:49:00 PM »

With 2x154 Droptanks we should have the ultra capable Catalina.

Mmmmh

This hardenes the fact that they have real fucked up calculations.

i.e. here the default PBY (red R/L data):

[Mass]
  Empty 6570.0 9485
  TakeOff 12800.0 16066
  Oil 100.0 288
  Fuel 1344.0 6640

Okay, we'll test a new FM with the corrected Loads, let's see if that helps.
Let me prepare the FM and Update Tomorrow.

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cbradbury

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Re: Catalina PBY/PBN Family of Variants v.4.1
« Reply #35 on: November 09, 2020, 03:07:03 PM »

Well, five times the amount of fuel will hopefully do it!

Interestingly, the Il2 Short Sunderland's figures in my test seem about right, giving an endurance of roughly 20 hours, compared to real life of c.18 hours @ 140knots. Close enough. To be really pedantic then, I suppose you should start the Sunderland with 90% fuel - but who is going to be flying 18-hour missions anyway?
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