Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: GRUNHERZ on October 01, 2004, 08:00:02 AM

Title: Qestion for Tony Williams
Post by: GRUNHERZ on October 01, 2004, 08:00:02 AM

Hey Tony,

You might have missed a question I asked the other day about the Gsh301 cannon.

I noticed it has an ammo feed at the very rear of the weapon instead of towards the front, to my layman’s eyes that’s unusual especially when you said it was a similar weapon operation to the browning.

Also, according to this picture, it just doesn’t seem to have much structure back there at all, where is the firing chamber?

(http://www.izhmash.udm.ru/images/gsh301-1.jpg)

Can you explain how this gun works?

Title: Qestion for Tony Williams
Post by: Tony Williams on October 01, 2004, 10:30:09 AM

I've never seen a cutaway diagram or anything explaining how it works, just been given a brief description.

The chamber must be the fatter cylindrical bit. I know that the cartridge is violently kicked into the breech (and just as violently ejected - at 100 m/s!), presumably by that lever-shaped thingy right at the back.

I've seen a a video of a ground firing test (possibly still on the web somewhere)  which is highly spectacular - flame flaring from the front and smoke billowing out the back!

It doesn't stand any truck with misfires either. If a cartridge misfires a blank charge above the chamber detonates and blasts through a small hole into the chamber straight through the case to ignite the propellant - you WILL fire dammit!

I think that it is a design right on the edge; it just about works but is so violent that I seriously doubt that it lasts for long before falling apart. But then, that's always been the Russian way...

Tony Williams

Title: Qestion for Tony Williams
Post by: GRUNHERZ on October 02, 2004, 11:54:07 AM

Thanks Tony.

Title: Qestion for Tony Williams
Post by: GScholz on October 02, 2004, 01:21:37 PM

(http://www.izhmash.udm.ru/images/oblako3.gif)

(http://www.aviation.ru/jno/MACS99/images/GSh-301.jpg)

Title: Qestion for Tony Williams
Post by: brady on October 02, 2004, 11:03:08 PM

WoW!

Title: Qestion for Tony Williams
Post by: Tony Williams on October 03, 2004, 04:59:49 AM

Yep, that's the video clip I was referring to. Definitely not healthy to stand next to that gun when it's firing - if you don't get scorched by the muzzle blast or choked by the smoke, you'll get clobbered by a flying shell case!

Although the gun is officially a short-recoil type, it is really a recoil-unlocked blowback; to achieve such a phenomenal rate of fire for a single-chamber gun, the breech must open very early while there is still a lot of gas pressure in the barrel (that's why so much smoke comes out of the breech)  so the fired case is blown out with some force.

TW