Friday 2010-10-29 Dev. update and Discussion

[322Sqn_Dusty]

Originally Posted by Foo'bar

Your're right, in case a bullet can penetrate a steam loco boiler hull (about 2 cm of steel tin, wich is in fact armour) wich can have about 16 bar of pressure (for german locos for instance) then it should show a very huge reaction with smoke and steam.

Any questions about railway damage only Oleg can answer. Sorry I can't tell more.

And it's no waste of nice locos. Just press refly and all is fine again

Good to know it's back for another round....... or 20..

Well, if possible would men be so kind to provide a shot with a blowing boiler? or is it preserved for the later war years?

[Desgobbi]

Originally Posted by Insuber

The Hurricane was known to be a very stable fire platform. Moreover the momentum of a 4000 kg plane at 400 km/h is 3 orders of magnitude bigger than that of eight 10g bullet at 2500 km/h ... if you see what I mean.

Hurricane momentum= 3000Kg*300KM/h
Hispano Bullet momentum = (0.13Kg~0.168Kg)* (3000Km/h, about 2800ft/s)

ratio of mumentum = 1 : 2300

Still can make enough shake.... Even a tiny vibrator in my iPhone can make me shake.

Of course, Oleg just played at easy mode in the video and there is no shake..

Im sure Philip was only having a laugh, no harm done or disrespect shown IMO.

[Xilon_x]

BULLET balistic video.SLOW MOTION

http://www.youtube.com/watch?v=QfDoQwIAaXg&feature=fvw

MEPHIS BELLE gun

http://www.youtube.com/watch?v=JET2K...eature=related

[Insuber]

Originally Posted by Desgobbi

Hurricane momentum= 3000Kg*300KM/h
Hispano Bullet momentum = (0.13Kg~0.168Kg)* (3000Km/h, about 2800ft/s)

ratio of mumentum = 1 : 2300

Still can make enough shake.... Even a tiny vibrator in my iPhone can make me shake.

Of course, Oleg just played at easy mode in the video and there is no shake..

1:2300 = 3 orders of magnitude

BTW if my memory is good enough, during the BoB the Hurricanes didn't have Hispanos, but 8 Brownings .303, and the muzzle speed of the 11 g bullet was some 2500 km/h, and the weight of the Hurricane was 3950 kg, and when attacking bombers I'd fly a little faster than 300 km/h ... details of course my friend

[Jaws2002]

Check this video. Belgian FN made .50cal gunpods.

http://www.fnhusa.com/mil/video/video.asp

Click on the "PODS" video. Watch specially the first part where the pods are used on fixed wing aircraft.
We know SOW video was recorded on easy setings. If is anything like Il-2 easy setings, this means without much vibration and most likely little to no bulet drop. I'd say SOW video looks mighty close.

[louisv]

So kinetic energy of the bullet: one half of m (mass) times v (speed) squared...

v squared is 3000 km/h squared and that is 9,000,000 and actually all this should be calculated in meters and seconds...

Which is relevant momemtum or kinetic energy ?

[Insuber]

Originally Posted by louisv

So kinetic energy of the bullet: one half of m (mass) times v (speed) squared...

v squared is 3000 km/h squared and that is 9,000,000 and actually all this should be calculated in meters and seconds...

Which is relevant momemtum or kinetic energy ?

Momentum is simply velocity x mass ... and the ratio is adimensional ... that's my last post on the subject, I don't want to attract here the UBI forum's masters of physics ...

[kendo65]

Originally Posted by Osprey

Firstly, I think that Oleg was saying that they have many types of round modelled but not yet applied, so what we are seeing is not the real thing.

Secondly, I would be disappointed if smoke wasn't shown because it's pretty clear that smoke does occur whether it be from the round itself or the atmosphere. One of the biggest difficulties I have found in IL2 is to know where you are firing with .50cal and lower, the addition of the Holy Grail and Potenz effect pack was possibly the best mod ever produced imho and if you have ever looked at the comparison videos on you tube (I posted one in a previous thread before) you will see the similarities.
Other effects I would like to see are tracer rounds bouncing off the sea, land and targets at various angles - this is very clear in a lot of the USAAF ground attack footage from P-47s

Luthier posted a request several months back for ballistics information about how rounds ricocheted off water!! They apparently already had the land ricochets sorted, but were looking for accurate info to programme water ricochets.

Oleg has said this regarding the tracers:

Originally Posted by philip.ed
Very nice video Oleg!

But with the RAF tracer, in gun-cam films I've seen, the tracer has had smoke-trails which are missing from SoW. Will these be added? I think it really adds to the immersion.

Originally Posted by Oleg Maddox

We have many different various... Just to be sure the traces modeling is according war time document's descrition of the bullets(with its construction, type of traces, color lighting etc). Orignal UK doc. Same for Germans

Originally Posted by IceFire
Oleg I have one question: I've noticed that the British .303 tracers we've seen so far in video and elsewhere are white. Was this really the case? Just development? I thought most of the British/American guns fired red tracers... This was the case in IL-2 but also what I had previous read.

Originally Posted by Oleg Maddox

They are different depending of the type of the bullets with tracers and the year of use.

Think we can take from this that there will be various types modelled, including presumably, those with smoke trails.

Also, some of the film people have provided showing various tracers are not very useful - one had so much editing that it was completely useless as a reference - Spits turned into Hurricanes, presence of FW190s indicated film shot later than 1940, clips of what I think were Hurri 2C's (?), etc.

[Insuber]

Originally Posted by kendo65

Luthier posted a request several months back for ballistics information about how rounds ricocheted off water!! They apparently already had the land ricochets sorted, but were looking for accurate info to programme water ricochets.

Rise of Flight showed the new 1.016 engine with ricochets of tracers and rockets ... very nice!

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

Cheers,
Insuber