Author Topic: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)  (Read 19162 times)

Offline elmayerle

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #45 on: December 27, 2019, 09:52:55 AM »
Mollins were, IIRC a cigarette machine manufacturer.  In otherwords, they designed machines that rolled and encased cigarettes.   I am sure they could redesign their autoloader quite easily to what ever shape the customer wanted.  I personally like the German 75mm loader pictured up above on the Hs129.  Circular but not annular as such.
Pretty sure you're right about Mollins.

As to a pod ammo system, I could see a "snail" drum of ammo coiling in towards the centre of the pod with a central operating rod driven by recoil that as the gun returns to battery pushes the next round from the end of the snail and offers it into the breech before being fired, ejecting the casing under recoil and then cycling the ammo feed system again. Could be relatively simple. I think? The German system rotates the ammo drum, but a fixed ammo snail would be simpler and allow more rounds. Might need something like a MG belt link or spacers in the snail rails, mind, to keep the rounds aligned in the snail.
In the extreme, perhaps something like the snail magazines used, IIRC, by Calico in the US on some carbines.

Offline kitnut617

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #46 on: December 27, 2019, 11:13:51 PM »
In the extreme, perhaps something like the snail magazines used, IIRC, by Calico in the US on some carbines.

Whoa! had to go look at that Evan  :smiley:  Do you think that system could have worked with a big shell then ?  Certainly is along the lines of what I was thinking off.

Offline Jeffry Fontaine

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #47 on: December 28, 2019, 02:53:24 AM »
The General Electric GAU-13 30mm Gatling Gun/Cannon pod utilized a helical ammunition magazine that wrapped around the Gatling gun within the pod. 
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Offline kitnut617

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #48 on: December 28, 2019, 04:04:42 AM »
Thanks Jeff, and IIRC the gun pod for the F-35 also has some sort of spiral magazine.

But what about the SUU-23, it's supposed to be able to have 1200 rounds, what sort of magazine does that have.

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #49 on: December 28, 2019, 04:15:16 AM »
But what about the SUU-23, it's supposed to be able to have 1200 rounds, what sort of magazine does that have.





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Offline kitnut617

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #50 on: December 28, 2019, 05:14:01 AM »
Thanks Greg, I've seen those photos before (research for a project I'm building), but all they are showing are the breach and loading mechanism, not the ammo storage system. The ammo is contained in the rear area of the pod.

Offline Jeffry Fontaine

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #51 on: December 28, 2019, 05:31:43 AM »
On the SUU-19 and SUU-23 20mm Gatling Gun/Cannon pods the ammunition is carried in a drum that is very much like that used on the F-4E/F-4F Phantom II and the F-105 Thunderchief and the larger GAU-8 gun fitted to the A-10 Thunderbolt that has a capacity of 1350 rounds of 30mm.  All of these retain spent rounds after firing. 
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Offline kitnut617

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #52 on: December 28, 2019, 06:55:52 AM »
That's interesting Jeff, I've read that the A-10's GAU-8 only had 900 rounds ---

How did they get the drum into the SUU-23 ? It doesn't look big enough in diameter.

Offline Jeffry Fontaine

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #53 on: December 28, 2019, 09:33:30 AM »
Not the same size ammunition drum as that used on the F-4E/F-4F and F-105.  Similar but not the same size drum magazine is also used with the M61 mounted on the F-16 and F-18. 

As far as the ammunition capacity goes for the GAU-8 as installed in the A-10 I was correct, but there is a clarification to that number:
Quote
GAU-8/A Avenger rotary cannon with 1,174 rounds (capacity 1,350 rounds)
.  As for why the difference, I have no answer but that number (1350 rounds) has been the number given in many reference books on the A-10 aircraft and GAU-8 weapon.  The capacity will vary for each mission so 900 rounds for a typical sortie may be due to fuel and range constraints after all you do not need to carry a full load of fuel or weapons for every mission.  All of that is determined by the Air Tasking Order and the people that are tasked with flying the mission.


***edit for spelling/grammar error.--jjf
« Last Edit: December 29, 2019, 06:08:32 AM by Jeffry Fontaine »
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Offline GTX_Admin

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #54 on: December 29, 2019, 03:30:01 AM »
How did they get the drum into the SUU-23 ? It doesn't look big enough in diameter.

I think you will find it will fit...just:




As for reloading:


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Offline kitnut617

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #55 on: December 29, 2019, 03:33:21 AM »
Hmm, it looks like the outer shell of the pod at the rear is also the outer shell of the drum. Now that explains a lot --- thanks Greg.

Offline tankmodeler

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Re: Aircraft Weapons Systems (Gun Pods, Rockets, etc.)
« Reply #56 on: January 03, 2020, 12:06:15 AM »
The rounds on the GAU-8 and the M-61 area also arranged as a helical spiral with the rounds arranged radially, point in. That arrangement isn't gonna work on a 57mm or 75mm round unless you want a 5 or 6 foot diameter pod. They are gonna have to be arranged along the same axis of the gun, limiting the ability to store a lot of ammo unless there is another mechanism that advances ammo from a rear carousel to the front one, not impossible, just more complicated and probably requiring additional power to drive it versus using just gun recoil.

Paul