Friday 2010-12-10 Dev. video update and Discussion

[RedToo]

Excellent work. Probably less yellow.

RedToo.

[PeterPanPan]

Very nice Oleg. I know it's not to do with engine start, but looking at the first video, I wonder of the red gun port tape will change once the guns are fired? Small detail, but was just wondering.

PPanPan

Definitely less yellow or red, the fire should be a blue colour Oleg. This is caused because the exhaust outlets are for the gases made when the fuel is burn and that gas burns blue.
I loved the way when the spitfire started, it wasn't just one burst of flame. I love the modelling system you have for engine starts. Well done Oleg and team!

[David603]

Originally Posted by PeterPanPan

Very nice Oleg. I know it's not to do with engine start, but looking at the first video, I wonder of the red gun port tape will change once the guns are fired? Small detail, but was just wondering.

PPanPan

Yes, the tape tears when the guns are fired.

[PeterPanPan]

Originally Posted by David603

Yes, the tape tears when the guns are fired.

Yes, I know it does in the real world. I was just wondering if this will be modelled in SoW.

[kendo65]

Originally Posted by PeterPanPan

Yes, I know it does in the real world. I was just wondering if this will be modelled in SoW.

Yes. Oleg has said it will.

(I'm sure this was what David603 meant too)

[Insuber]

Originally Posted by kendo65

Yes. Oleg has said it will.

(I'm sure this was what David603 meant too)

Already shown in pics and videos. Red tape goes when guns fire.

[major_setback]

Originally Posted by PeterPanPan

Yes, I know it does in the real world. I was just wondering if this will be modelled in SoW.

Yes, it is shown in one of the films from the Russian game show.

Before and after:

I wanted to post this before but just didnt have time:

As Oleg explained, the flame output of an exhaust is affected by factors like temperature and pressure. Flames visibility is due mainly to lighting factors (it'll be harder to see flames on a sunny day), but they're always there (bear in mind that what you see is the output of the avgas combustion straight from the combustion chamber!).
Exhaust fire shouldn't be confused with backfire though, which is an external combustion of a too rich mixture which causes flames like this


Oleg, I love the work you're doing, the attention to details as usual is surprising and comes from a man who obviously has experience with aviation, my humble suggestion is to keep the flames towards the red/blue spectrum more than yellow, since the temperatures involved are far higher than a "yellow flame" when it comes to exhaust output. Another important aspect is to keep them subtle (in terms of transparency/alpha channel) but visible from distance (thinking of the Zerstoerer night fighters spotting the engine exhausts of Lancasters at a certain distance).

[Richie]

Originally Posted by Sternjaeger

I wanted to post this before but just didnt have time:

As Oleg explained, the flame output of an exhaust is affected by factors like temperature and pressure. Flames visibility is due mainly to lighting factors (it'll be harder to see flames on a sunny day), but they're always there (bear in mind that what you see is the output of the avgas combustion straight from the combustion chamber!).
Exhaust fire shouldn't be confused with backfire though, which is an external combustion of a too rich mixture which causes flames like this


Oleg, I love the work you're doing, the attention to details as usual is surprising and comes from a man who obviously has experience with aviation, my humble suggestion is to keep the flames towards the red/blue spectrum more than yellow, since the temperatures involved are far higher than a "yellow flame" when it comes to exhaust output. Another important aspect is to keep them subtle (in terms of transparency/alpha channel) but visible from distance (thinking of the Zerstoerer night fighters spotting the engine exhausts of Lancasters at a certain distance).

This has nothing to do with the engine running normally it's just raw fuel on fire. That engine probably isn't even running yet. The wind from the prop would blow it out.

http://www.youtube.com/watch?v=EoyN29O8UoE