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-   -   BF109 - Can't we just have the gunsight in the middle? (http://forum.fulqrumpublishing.com/showthread.php?t=21850)

41Sqn_Stormcrow 04-21-2011 01:44 PM

try it yourself, Lixma.

Go to a mirror (the reflector glas is nothing different that a transparent mirror) and see if you can see anything from behind you at the side of the mirror. I guess you won't see anything exept the wall to which the mirror is attached.

Wolf_Rider 04-21-2011 01:48 PM

we understand what you're trying to say Stormcrow, but the old "arcade machine" type reflection system has the source a lot closer than the bathroom wall.

Sauf 04-21-2011 01:50 PM

Quote:

Originally Posted by Lixma (Post 269730)
Why not?

1: You're sat in a 109.

2: Looking straight ahead.

3: Both eyes open.

4: Revi offset to project the reticle image directly into your right eye only.

I submit your view would be more or less like this..... (paintshop skills notwithstanding)

http://img339.imageshack.us/img339/4853/109kb.jpg

What would you see?

Actually, while were redesigning the revi can we have a spitfire painted on it as well? Will save me having to do all that take off/landing and flying bs :rolleyes:

41Sqn_Stormcrow 04-21-2011 01:52 PM

That still cannot defy physical laws. The distance between the light source and the reflecting surface is irrelevant to optical law. Only the angles count. See my previous post one page before.

justme262 04-21-2011 01:59 PM

When I first got track IR I imaged I would be able to see better. Yes of course I could see better. I could effortlessly and naturally lean just a little to the right to look through the Revi as I line up a shot.

But the thing which I didn't expect from Track IR is the feeling of flying. When you do a loop you lean back and look up and over as you pull through ... If you are flying full throttle at tree top level at 60 degree bank you lean with the turn to stay upright and it FEELS like you are turning. :cool:

I think you can turn any web cam into facetrack for free. Try it

With track IR the revi is perfect on the right side out of the way until i need it.

One of the things they used to say to the new pilots is keep your head on a swivel.

http://img861.imageshack.us/i/revi.jpg/

Wolf_Rider 04-21-2011 02:01 PM

source distance to reflector makes a big difference, Stormcrow. You only get the big shift when the source is a big distance away


http://www.spitfirespares.com/spitfi.../gunsites.html

Gun Cam Harmoniser (Pg 1 Gun)... illustrates my point

its about 1/5 the way down the page

41Sqn_Stormcrow 04-21-2011 02:14 PM

First you won't need a big shift in the 109. And I would also say that the required shift is by far less than in the image you're pointing me to. IF distance of the light source is significant at all which I still doubt. The limiting factor is the size of the reflector glas, not the distance. The distance only plays a role because of optical size reduction with increased distance. But this factor is irrelevant for a particularly designed light image projected actively at a certain angle on the reflector surface.

EDIT: Also reflector surface sideway inclination plays a role (see last picture in my post)

grunge 04-21-2011 02:18 PM

I liked the revi behaviour in the old sturmo adn get used to it. It was good to have the same FoW with Shfit+1. A track IR device costs 1/4 of my earnings in a month, so i'm a bit sad about this also :(

Wolf_Rider 04-21-2011 02:20 PM

you'll have to take that up with the real world image, Stormcrow

b101uk 04-21-2011 02:23 PM

Quote:

Originally Posted by 41Sqn_Stormcrow (Post 269742)
That still cannot defy physical laws. The distance between the light source and the reflecting surface is irrelevant to optical law. Only the angles count. See my previous post one page before.

the critical distance is if the left edge of the reflector glass is central to the position of the human nose & the nose of the aircraft, if it is then is the distance from the left edge of the reflector glass to the centre of the reflector glass the same distance as the human anatomy from the centre of the human nose to the centre of the right eye.

if yes to all the above then the right eye is in perfect line with the centre of the reflector glass thus reflector light and the brain will naturally merge the left/right eye image in the same manner to if you were to use a marker pen on a bit of clear glass to mark a X and with both eyes open were to position it in line close the right eye, however with respect to the gun sight and the above there needs to be a narrow angle of view for the “reflective recticel” so it cannot be seen at all by the left eye when the right eye is positioned correctly.


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