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XyZspineZyX
06-27-2003, 08:46 AM
Is changing the convergence distance of the guns and cannons in the options menu the equivalent of what would be adjusting the gunsights from inside the plane???

Thx!

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XyZspineZyX
06-27-2003, 08:46 AM
Is changing the convergence distance of the guns and cannons in the options menu the equivalent of what would be adjusting the gunsights from inside the plane???

Thx!

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XyZspineZyX
06-27-2003, 09:02 AM
I thought convergence was something that had to be set up on the ground.
But I would be interested to hear otherwise.

Some soar like an eagle
Some circle as vultures.
I fly like a tit!

XyZspineZyX
06-27-2003, 09:29 AM
Gun convergence was set by the gun mechanics on ground. That was occasionally reset by the groundcrews after some missions. Due the recoil impact of the guns, the convergence became less accruate after firing. Today, there are optical helps that could be put into the barrel for adjustment, that replace large scale shooting tests, after, especially on larger calibres.

http://www.geocities.com/kimurakai/SIG/262_01011.jpg

Kimura

Message Edited on 06/27/0309:32AM by KIMURA

Cpt.LoneRanger
06-27-2003, 09:30 AM
Yes.

For one point, you select the distance, where the bullets will be right on the projected targets.

Apart from that, you also set the point, where especially wingmounted guns meet at one point.

(Seen from above it's like an X, where the lower ends are the wing-mounted guns, the crossing is the convergence zone)

You can give different numbers, cause the MGs and Cannons have different ballistic patterns. You can try around a bit, and find your settings, depending on your skill and combat style. (higher settings for long-range sniping)

(The best feedback of where your bullets are going is on a ground attack. You'll see the dust and dirt from the impact, as your fire your guns)

Hope it helps?

greets
Cpt.LoneRanger

XyZspineZyX
06-27-2003, 10:07 AM
Wouldn't convergence be changed by your mechanic/technician and involve adjusting the weapons? Probaly the gunsight would have to be recalibrated as well, but probably done by the technician at the same time as the guns?

Tully__
06-27-2003, 10:33 AM
Setting convergence is adjusting the guns so that they fire throught the sight line at the convergence distance. A picture of the effect (not to scale /i/smilies/16x16_smiley-wink.gif )

http://members.optusnet.com.au/tully_78th/Convergence.jpg

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Salut
Tully

XyZspineZyX
06-27-2003, 10:41 AM
Thanks Tully, I know what convergence is...What I would exactly know is the point of the gunsights adjustment equipment we see in many FB planes, specially in russian ones...those sliders with numbers on them. I suppose theyâÂ´re for adjusting the gunsights, but IâÂ´m not sure of the effect they have. I guess theyâÂ´re not modelled in FB anyway, but as I always see them, I would like to know...

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XyZspineZyX
06-27-2003, 11:43 AM
i always assumed it was a range adjustment for deflaction shots but would be interested to know

XyZspineZyX
06-27-2003, 12:06 PM
I think (and I stand to be corrected) on RAF planes the range scales could be set so that you knew, when a certain plane's wingspan filled the sight recticle, you were that distance away.

So, you set the range scale at 300yds, and when the wingspan of the enemy filled the circle, you knew that you were 300yds away from your target and, if you were good enough, deflect accordingly.

It didn't alter the harmonization of the guns tho.

NewS.

Founder member (currently the only member!) of the Unofficial Hurricane Fan Club.

Cpt.LoneRanger
06-27-2003, 12:10 PM
WTE_Galway, it is.

You can correct the aimpoint, increasing or decreasing the sight to the actually distance to the target (if you know the wingspan, you can estimate the distance by the rings/markings on the sights)

But, of course you can't change the convergence of the guns http://ubbxforums.ubi.com/infopop/emoticons/icon_wink.gif

That is done by the mechanics on the ground. They align guns and sights during fire tests. Have a picture of a Bf109 on a shooting range, but don't know the source => can't link it =(
The settings are made as "default", whereas the pilot was able to adjust his sights, as neccessary.

greets
Cpt.LoneRanger

XyZspineZyX
06-27-2003, 12:13 PM
So, aadjusting the convergence is, i.e., what in Pearl Harbor movie were doing the ground crew with the p40 on the ground, firing the guns to some targets on the wall...But, a little stupid as I am, I still canâÂ´t understand how the gunsight works exactly...IâÂ´m sorry...

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Tully__
06-27-2003, 12:17 PM
A (really rough) diagram of the workings of a reflector sight.

http://members.optusnet.com.au/tully_78th/reflectorsight.jpg

The dials adjusted (if I understand correctly) focus and reticle size, with maybe some windage thrown in on some types.

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Salut
Tully

XyZspineZyX
06-27-2003, 12:19 PM
Now thanks a lot Tully, thatâÂ´s what I needed exactly...ItâÂ´s all clear to me...

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XyZspineZyX
06-27-2003, 12:24 PM
The gunsight allows for the effect of gravity.

For example, if you throw a ball at something 20 yards away, you don't throw it horizontally do you? You need to use elevation (angle to the ground) to give it some height so that the ball doesn't hit the ground 5 feet in front of you.

A gunsight is the same. A bullet is affected by gravity from the moment it leaves the barrel of the gun that fired it. That is why gunsights are used. On a rifle, the sights alter the angle of elevation by fractions of a degree.

I used to shoot rifles and pistols. (I was quite a good shot too) I had a .303 No4 Mk1* Lee-Enfield rifle and was shooting at 200yds. THe elevation was not really noticeable. I took my .357 and shot at the same target. I had to elevate the barrel by about 5-10 degrees, just to hit the target.

A properly set up gunsight will do the elevation thing for you. So all you need to do is 'point and shoot'.

NewS.

Founder member (currently the only member!) of the Unofficial Hurricane Fan Club.

XyZspineZyX
06-27-2003, 12:33 PM
I use to shoot with a Mannlicher 30.06 with scope, and the difference between a target at 100m and another one at 400m is about two millimeters through the scope...Do the same tiny elevation changes affect the same way bigger gun calibers mounted on planes?

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XyZspineZyX
06-27-2003, 12:59 PM
Yes, possibly even more so due to the flexing of the wings, heat of the barrels etc.

All of the effects you had to contend with when you were firing your rifle still affect the bullets/shells used in an aircraft. The only effect that isn't as pronounced is drag in the upper atmosphere.

NewS.

Founder member (currently the only member!) of the Unofficial Hurricane Fan Club.