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#62
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Wrongo. Mig-27 has elevation-movable GSh-6-23 that uses 23mm ammo (same ammo
of twin-barrel GSh-23 used on MiG-21, 23...) and fires around 7,000-8,000 RPM. The same gun is installed into MiG-31 for AA, carried internally and deployed on a movable gun-bay when used. What is interesting about this gun is that it is, although Gatling-type gun, it is gas-operated (don't ask me how!) and therefore so light. On trials it achieved some 10,000 RPM (!!!) but it is tuned-down for practical use on MiG-27 and MiG-31. The -other- Russian gatling gun GSh-6-30 You were talking about is not in use yet (at least I do not know which aircraft carries it) Nele NULLA ROSA SINE SPINA Tony Williams wrote in message ... The 30x173 cartridge for the GAU-8/A was actually 'borrowed' from the KCA, the most obvious difference being that the KCA's ammo is steel-cased rather than aluminium alloy. The power of the HE rounds is exactly the same. The KCA was adopted by the USA as the GAU-9/A, in case the 8A failed (the A-10 would have had two KCAs). As I've posted elsewhere on this thread, as well as the podded four-barrel GAU-13/A version of the GAU-8/A, a lightweight three-barrel CHAG version in 30x173 was also produced, firing at 2,000 rpm. That would have been interesting.... It's worth noting that the current Russian 30x165 ammo isn't that much less powerful than the 30x173, and they do make a six-barrel rotary, the GSh-6-30, which fires at 5,000 rpm and weighs only 160kg (M61 = 114 kg, GAU-8/A = 281 kg). If you really want bang for your buck, you can't do much better than that, but the Russians only ever fitted it to the MiG-27 for ground-attack. Tony Williams Military gun and ammunition website: http://www.quarry.nildram.co.uk Discussion forum at: http://forums.delphiforums.com/autogun/messages/ |
#63
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The same gun is installed into MiG-31 for AA
Talk about optimism! Ron Pilot/Wildland Firefighter |
#64
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In article ,
"Nele VII" wrote: Wrongo. Mig-27 has elevation-movable GSh-6-23 that uses 23mm ammo (same ammo of twin-barrel GSh-23 used on MiG-21, 23...) and fires around 7,000-8,000 RPM. The same gun is installed into MiG-31 for AA, carried internally and deployed on a movable gun-bay when used. What is interesting about this gun is that it is, although Gatling-type gun, it is gas-operated (don't ask me how!) and therefore so light. On trials it achieved some 10,000 RPM (!!!) but it is tuned-down for practical use on MiG-27 and MiG-31. The only problem is that the GSh-6-23 is *heavy*, running almost 200 kg, and on the MiG-31 it only has 260 rounds... giving it about two seconds of full-rate (7000 per minute) firing. Other than that, it seems like a heckuva scary piece of iron. -- cirby at cfl.rr.com Remember: Objects in rearview mirror may be hallucinations. Slam on brakes accordingly. |
#65
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"Nele VII" wrote:
The -other- Russian gatling gun GSh-6-30 You were talking about is not in use yet (at least I do not know which aircraft carries it) I saw some references to the MiG-27 using the -30... -- cirby at cfl.rr.com Remember: Objects in rearview mirror may be hallucinations. Slam on brakes accordingly. |
#66
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No. My sources are, among others is website "Russian Aviation Museum",
Article from Military Parade July-August '97, Salamander book "MiGs" with a nice photo of the gun, from what is obvious it is(they are) 23, NOT 30mm barrel(s). -30 is the newer gun that belongs to -30mm "family" that includes single-barrel GSh-301 (MiG-29/Su27), single-barrel 2A42 (choppers) double barrel GSh 30 (Su-25) and 30K, six barrel GSh-6-30... Nele NULLA ROSA SINE SPINA Chad Irby wrote in message ... "Nele VII" wrote: The -other- Russian gatling gun GSh-6-30 You were talking about is not in use yet (at least I do not know which aircraft carries it) I saw some references to the MiG-27 using the -30... -- cirby at cfl.rr.com Remember: Objects in rearview mirror may be hallucinations. Slam on brakes accordingly. |
#67
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On Tue, 9 Dec 2003 00:29:04 +0000, "Paul J. Adam" wrote:
In message , Alan Minyard writes Much better to go with an M-61 variant that actually works, is combat proven, and has a useful rate of fire. Trouble is, this gets you back where the US was in 1950; the M3 .50" was a superb gun in terms of reliability, ballistics and rate of fire and was a thoroughly proven weapon. Trouble is, nobody convinced the MiG-15s of that fact, so they soaked up a _lot_ of hits where a larger-calibre weapon would have made the F-86 versus MiG-15 kill ratio even _more_ impressive. And who out there is going to use significant numbers of unreliable, heavy, slow cannon to oppose a US Force? The rate of fire of the .50 was not enough to make up for the somewhat smaller calibre, that is not the case with the M-61. Al Minyard |
#68
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"Nele VII" wrote:
(Top posting repaired) Chad Irby wrote in message ... "Nele VII" wrote: The -other- Russian gatling gun GSh-6-30 You were talking about is not in use yet (at least I do not know which aircraft carries it) I saw some references to the MiG-27 using the -30... No. My sources are, among others is website "Russian Aviation Museum", Article from Military Parade July-August '97, Salamander book "MiGs" with a nice photo of the gun, from what is obvious it is(they are) 23, NOT 30mm barrel(s). ....from a six year old article. Meanwhile, the *current* FAS site mentions the -30 in the MiG. http://www.fas.org/man/dod-101/sys/ac/row/mig-27.htm ....along with: http://www.aeronautics.ru/archive/vvs/mig27-01.htm And others. -- cirby at cfl.rr.com Remember: Objects in rearview mirror may be hallucinations. Slam on brakes accordingly. |
#69
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Alan Minyard wrote in message . ..
On Tue, 9 Dec 2003 00:29:04 +0000, "Paul J. Adam" wrote: In message , Alan Minyard writes Much better to go with an M-61 variant that actually works, is combat proven, and has a useful rate of fire. Trouble is, this gets you back where the US was in 1950; the M3 .50" was a superb gun in terms of reliability, ballistics and rate of fire and was a thoroughly proven weapon. Trouble is, nobody convinced the MiG-15s of that fact, so they soaked up a _lot_ of hits where a larger-calibre weapon would have made the F-86 versus MiG-15 kill ratio even _more_ impressive. And who out there is going to use significant numbers of unreliable, heavy, slow cannon to oppose a US Force? The rate of fire of the .50 was not enough to make up for the somewhat smaller calibre, that is not the case with the M-61. Possibly, possibly not. The bigger the target is, the more damage you have to inflict to down it. A MiG-15 weighed under 3,800 kg empty, a Su-27 around 18,000 kg - nearly five times as much. A 20mm shell weighs only just over twice as much as a .50 bullet. You can double its effectiveness in recognition of the HEI content, but even so you are still left with a pretty even match between the .5/MiG-15 and 20mm/Su-27 in terms of destructive effect compared with target weight. Tony Williams Military gun and ammunition website: http://www.quarry.nildram.co.uk Discussion forum at: http://forums.delphiforums.com/autogun/messages/ |
#70
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"Nele VII" wrote in message ...
No. My sources are, among others is website "Russian Aviation Museum", Article from Military Parade July-August '97, Salamander book "MiGs" with a nice photo of the gun, from what is obvious it is(they are) 23, NOT 30mm barrel(s). -30 is the newer gun that belongs to -30mm "family" that includes single-barrel GSh-301 (MiG-29/Su27), single-barrel 2A42 (choppers) double barrel GSh 30 (Su-25) and 30K, six barrel GSh-6-30... Sorry, but I must disagree with you. It may be that some MiG-27s were fitted with the GSh-6-23, but the GSh-6-30 is the more common fit. This is from 'Flying Guns: the Modern Era': "Later the USSR decided that the MiG-23 fighter would be a good basis for a modern Shturmovik, and ordered a dedicated attack development that was designated MiG 27. After some debate, supersonic performance was retained, to enable the aircraft to get in and out of the fighting area quickly, but the engine installation was considerably simplified. The MiG 27 had a flat "duck nose" with navigation and attack systems instead of fighter radar. The lower nose allowed redesign of the cockpit, with a much better forward and downward view and armour to protect the pilot. The aircraft also received a system that pressurised the fuel tanks with inert gas, and stronger landing gear for rough-field operations. The GSh-6-30 cannon was installed instead of the GSh-23L. The MiG-27 is the sole confirmed carrier of the GSh-6-30 (although there are reports that it has been fitted to some versions of the MiG-31 and Su-25), a six-barrel rotary gun firing the powerful 30x165 cartridge at up to 5,000 rpm. The vibration and recoil of this potent weapon caused MiG considerable installation problems. Only 265 rounds are carried, limiting the firing time to 3.2 seconds. The gun was at first left totally exposed, but on the MiG 27M later the breech was given a cover to protect it from debris thrown up by the tires, and gas deflector vanes were added. On the wing SPPU-22-01 gun pods, with guns that can be depressed for ground strafing, can be carried." Incidentally, I don't know where the figure of 200 kg for the GSh-6-23 came from - possibly for the whole installation, but the gun weighs only around 75 kg. Even the GSh-6-30 weighs only 160kg as a bare gun. Tony Williams Military gun and ammunition website: http://www.quarry.nildram.co.uk Discussion forum at: http://forums.delphiforums.com/autogun/messages/ |
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