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Author Topic: A better S.Giorgio gun sight  (Read 6622 times)

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greybeard

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Re: A better S.Giorgio gun sight
« Reply #12 on: April 08, 2015, 02:39:07 AM »

For the sake of game play and a reasonably full extent of the reticle being seen (without setting the POV quite close), a larger-than-collimator reticle mask is preferred, which will likely result in at least partial overlap of the optical and printed reticles when the POV is moved downward. But that's OK by me...

I think reticle should be drawn exactly as per explanation in the manual above (that's to say 118 mils the outer ring and 60 mils the inner one, with the three dots spaced by 28 mils each). Player's aiming position should be, again as per manual, no more than 250 mm (quite common, e.g.: Bf 109E has in-game 197 mm and Bf 109K 262 mm). In this position, player should watch what shown in picture above, that I repeat below, enlarged:



I am becoming keen to work on the Type B sight--no estimates on a date of completion. ;)

Please, take your time.

Aside, I wonder how this sight was conceived (on the contrary of its contemporaries, I think) to aim at a target perpendicular to its own trajectory; even distance is estimated on target plane side, instead of the more common "wingspan" based evaluations. Apparently, it looks made for "slashing" attacks.
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WxTech

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Re: A better S.Giorgio gun sight
« Reply #13 on: April 08, 2015, 03:58:53 AM »

The eye-to-reflector distance is 'critical' only for seeing the reticle pattern (or the more important/relevant part) in its entirety. A larger view distance does not alter the optically generated reticle's angular size, but it does reduce the angular extent of the reflector and 'window' as defined by the collimator's reflection, which at some point clips the outer reticle.

If that latest illustration indeed represents the sight picture at a view distance of 250mm, it serves to calculate the physical size of the reflector. Useful for me, as I have no data on any sight dimensions other than estimated from a couple of online photos including an AA battery.

It would seem this reticle pattern was devised to assist with maximum (90 degree) deflection shots, the solutions for smaller angles being easier to judge therefrom. With the relevant circle's radius normalized to 1, the solution for any other target heading crossing angle places the target at a radius scaling as the sin of that angle. This can be easily visualized without calculation or even a knowledge of trigonometry.
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greybeard

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Re: A better S.Giorgio gun sight
« Reply #14 on: April 09, 2015, 04:13:24 AM »

If that latest illustration indeed represents the sight picture at a view distance of 250mm, it serves to calculate the physical size of the reflector.

I think so.

What about Anim8or? I found other works I did with it:

Allied balloon


German Balloon


German Hangar Tent


Bessonneau
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WxTech

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Re: A better S.Giorgio gun sight
« Reply #15 on: April 09, 2015, 05:56:20 AM »

I've looked over the Anim8or web site, perusing the online tutorials. Looks good! It should considerably ease the design/building workload. How about file formatting? Is it easy enough to convert to IL-2's mesh structure?
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greybeard

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Re: A better S.Giorgio gun sight
« Reply #16 on: April 10, 2015, 02:41:00 AM »

How about file formatting? Is it easy enough to convert to IL-2's mesh structure?

If I recall correctly, Anim8or allows to import 3DS format, as well as to export its own an8 format in 3DS. Unfortunately, I don't know anything about IL-2 3D model management, although I guess the 3DS format should be a good liaison. Please try asking at 3d Modding section (I see there are also tutorial there).
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greybeard

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Re: A better S.Giorgio gun sight
« Reply #17 on: April 21, 2015, 12:54:45 AM »

BUMP! ;)
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