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### AuthorTopic: Zeppelins M, P and Dirigibile M - repacked, new FM  (Read 788 times)

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#### SAS~vampire_pilot

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##### Zeppelins M, P and Dirigibile M - repacked, new FM
« on: July 15, 2019, 10:02:41 AM »

This a re-release bundle of the Zeppelins and the Dirigible made by Gio back in 2012 with a tweaked DffFM Flightmodel.

Dirigibile Tipo M

Zeppelin M

Zeppelin P

All credits for bringing us the Zeppelin models go to Gio and to DreamK for the slots, I just took the FM for a (crude) spin.
Please note that all the airships share the same FM, as they did before.

We do not have a specific flightmodel that truely models an airship behavior. I have no idea if it's even possible with the help of java to get close to something "lighter than air" but Vega has done a lot of interesting things for Helicopters, so maybe that's in the future.

I am not exactly an FM expert but I know enough to be dangerous... As of now, what we have here is a big, very lightweight bomber with aircraft physique and some odd values. This is driving the IL-2 flight physique into a corner and has its limitations, but it serves a few purposes.

Quote
speed performance - fast and slow.

Previously, my main issue with the old Zeppelins was the very high speeds they needed. The AI wasn't able to hold altitude at speeds below 110 km/h, even higher speeds were necessary when loaded.

The possible top speed with the previous bomber FM was over 150 km/h IAS, way beyond anything real life airships were capable of. This made it hard to set up and use in missions as this is already faster than most aircraft and not at all realistic.

So I had a look and tried (with quite primitive attempts) to tweak the performance envelope down. This was an on and off item for some time now.
Shed weight, increase lift, add drag... and see what happens.

This flightmodel now works for the AI for speeds between 80 km/h and 120 km/h which to me seems a usable and somewhat realistic performance envelope, but its depending a bit on loadouts.

Due to the flight physique, a heavy loadout requires more speed: a lighter Zepp can go slower. You might want to test your mission setup to see what's needed. If you want full 28 bombs loadout, cut the fuel and so on. A Zepp on its way home does not carry bombs anymore, makes it lighter.

The fuel is plenty, in my tests, the Zeppelins went for about an hour and only used some 15% of fuel. So even at a reduced load the endurance is more than enough for any kind of mission.

Due to the way Il-2 calculates weights, bomb-load has a very high gross weight impact here, which in return affects flight physique and necessary speed and lift. I have added an additional smaller bomb-load to the German Zeppelins for more options.

Quote
altitudes - high and low

Operational altitudes in real life were between 1000 and 3000 meters, that's where the FM was tested mostly. This was still beyond most aircraft at the time. 5000m was achieved in late war and you should do as they did back then: shed weight - cut fuel and reduce bombload to achieve a more stable flight of the AI.

But maybe you just want to have big fat airships as eye candy in your skies, lumbering around and about low and slow. The cigars just look so nice.

As a player, you can fly level by hand with some up-trim or use the auto level stabiliser, which works quite well up to 100 km/h. It gets uneasier when going faster. I recommend to steer using rudder trim, which also works when level stabiliser is activated. Zeppelins are sluggish!

Take off and landing still is tricky and is done in an airplane manner but the AI can perform it. To let them take off or land on water, you can place an invisible auxiliary airstrip.

This is still far from anything "realistic", I know, but I feel like it's a bit of an improvement in usability and I'd like to share it so maybe these big cigars can gather some new interest

D/L
http://www.mediafire.com/file/v29a8vl7559dd9j/06_Dirigibile_ZeppelinMP_repack.zip/file

SSP stationary by Mission_bug
https://www.sas1946.com/main/index.php/topic,48542.0.html

Only if you experience an error about a missing 3do/plane/textures with pilotA2.tga - Hubberanz has made this patch:
http://www.mediafire.com/file/4kua6e7i5lvxvp0/06_Dirigibile_ZeppelinMP.7z/file

In case you don't like this FM at all, you can still stick with the old versions:
https://www.sas1946.com/main/index.php/topic,30496.0.html
https://www.sas1946.com/main/index.php/topic,32025.0.html
https://www.sas1946.com/main/index.php/topic,31062.0.html
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#### enry711

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##### Re: Zeppelins M, P and Dirigibile M - repacked, new FM
« Reply #1 on: July 15, 2019, 10:48:22 AM »

Thank you very much vampire for this new modifications!
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#### Hubberranz

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##### Re: Zeppelins M, P and Dirigibile M - repacked, new FM
« Reply #2 on: August 12, 2019, 10:23:06 AM »

412 SAS 5.3.

Problem with the P ( no pit ):

Code: [Select]
[3:53:29 PM] INTERNAL ERROR: Str2FloatClamp() - Clamped 5 -> 2 (delta = -3) to Range 0..2[3:53:29 PM] INTERNAL ERROR: Str2FloatClamp() - Clamped 2e+006 -> 1e+006 (delta = -1e+006) to Range 0..1e+006[3:53:30 PM] INTERNAL ERROR: Can't open file '3DO/Plane/Textures/pilotA2.tga'[3:53:30 PM] WARNING: object '3DO/Plane/Textures/pilotA2.tga' of class 'TTexture2D' not loaded[3:53:30 PM] INTERNAL ERROR: Texture required[3:53:30 PM] WARNING: object '3DO/Plane/Zeppelin_P/Pilot4.mat' of class 'TMaterial' not loaded[3:53:30 PM] INTERNAL ERROR: Material: Can't load 'Pilot4.mat'[3:53:30 PM] Mission error, ID_04: java.lang.RuntimeException: INTERNAL ERROR: Material: Can't load 'Pilot4.mat'[3:53:30 PM] [3:53:30 PM] java.lang.RuntimeException: INTERNAL ERROR: Material: Can't load 'Pilot4.mat'[ClassInfo]  ClassName TMaterial  BasedOn Pilot1.mat[Layer0]  TextureName ..\Textures\pilotA2.tga
The file 3do/plane/textures with pilotA2.tga in it, is missing from the "repack".

I had M and P earlier versions, and found the file plane/textures/pilotA2.tga in the earlier P.

solved.

Thank you for these new FM versions.

BoB

PS: People who have this texture file from some other mod, will not experience this missing file issue. I retired my old P. You also probably did not experienced the issue either. Look in old P, it is in there.

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#### SAS~vampire_pilot

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##### Re: Zeppelins M, P and Dirigibile M - repacked, new FM
« Reply #3 on: August 13, 2019, 02:49:54 AM »

I don't find it in any old pack I have, would you mind share it?

I suppose it comes with many mods as this is in the commons Texture folder.
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#### Hubberranz

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##### Re: Zeppelins M, P and Dirigibile M - repacked, new FM
« Reply #4 on: August 13, 2019, 05:53:55 AM »

... perhaps not a "pack", but a stand alone (?) : AIRSHIP_Zeppelin_P

Anyway,
..here is the file from within, made into a patch:

http://www.mediafire.com/file/4kua6e7i5lvxvp0/06_Dirigibile_ZeppelinMP.7z/file
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#### SAS~vampire_pilot

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##### Re: Zeppelins M, P and Dirigibile M - repacked, new FM
« Reply #5 on: August 13, 2019, 07:22:13 AM »

great thanks!
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#### Mixx

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##### Re: Zeppelins M, P and Dirigibile M - repacked, new FM
« Reply #6 on: August 14, 2019, 05:15:12 PM »

Thank you for new modifications Zeppelins
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