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What type of gun does the Harrier carry?

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Matthew C. Masuda

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Jul 20, 1994, 11:44:39 PM7/20/94
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After seeing True Lies last night, a friend told me that the Harrier
carries 30mm guns. He also told me that the A10 packs a 4-barrelled 50mm
cannon, so... :) Now I'm curious as to what exactly is carried by the AV-8s
(those were Bs, right, with the big bubble canopy?). I would've assumed
that they carry the 20mm rotary cannon, but that's just a guess. Any
experts care to enlighten me?

- Matt

--
* Matthew C. Masuda * "I am Matt, one of many. *
* mcma...@ucdavis.edu * Please don't tread on me." *
* University of California, Davis * -kd *

Thomas Zych

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Jul 21, 1994, 1:45:23 AM7/21/94
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ez02...@dale.ucdavis.edu (Matthew C. Masuda) writes:

>After seeing True Lies last night, a friend told me that the Harrier
>carries 30mm guns. He also told me that the A10 packs a 4-barrelled 50mm
>cannon, so... :) Now I'm curious as to what exactly is carried by the AV-8s
>(those were Bs, right, with the big bubble canopy?). I would've assumed
>that they carry the 20mm rotary cannon, but that's just a guess. Any
>experts care to enlighten me?


The AV-8A's carried a pair of 30mm cannons, but the AV-8B carries a single
25mm cannon (other pod has ammo).

...Tom
+-----------------------------------------------------------------------------+
| Tom Zych t-z...@uiuc.edu The University of Illinois at Urbana-Champaign |
| The University may have all my money, but the opinions still belong to me |
+-----------------------------------------------------------------------------+
| Graduate student in Aero/Astro Engineering -- Will design aircraft for food |
+-----------------------------------------------------------------------------+

Nicholas Strauss

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Jul 21, 1994, 9:36:58 AM7/21/94
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The AV-8B carries a 25mm cannon. The following is from memory,
so I'll do my best:

GAU-12/U Equalizer
25mm, 5 barrel cannon
3600 rounds per minute in Harrier installation, driven pneumatically
(perhaps by bleed air?)
300 rounds ammo.
Nominal dispersion 1.3mil (seems awefully good, but thats what
I read)
Muzzel velocity 3200-3400 fps (depends on ammo, HEDP, AP, etc.)

Basically, its derived from the GAU-8 in the A-10, rather than
from the 20mm Vulcan used in just about all other US aircraft.

The GAU-12 Equalizer is not, to my knowledge used in any other
aircraft. It is however part of the Marines LAV-AD air defense
vehicle (not yet in service), and a number of ship-board mounts
for air defense and small boat defense. I believe the new US
special warefare craft (Cyclone class?) and the new Israli
SAAR-V corvettes use them primarily for the latter purpose.

Its also been thought of for use on helicopters. I've seen it
associated, experimentally, with Marine Cobras and the V-22,
but nothing operational in either case.

By the way, the A-10's gun is a 7-barrel 30mm, firing 4200 rpm.

--Nick


--
______________________________________
\ \ _ ______ |
\ NICHOLAS STRAUSS \ / \___-=O`/|O`/__|
\ Silicon Graphics-Network Operations \_______\ / | / )
/ nstr...@netmare.corp.sgi.com / `/-==__ _/__|/__=-|
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/_____________________________________/ (o)


"What, are you kidding?? We're on a spaceship! This place is *crawling*
with toothpicks!"

uralan...@cc.memphis.edu

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Jul 21, 1994, 1:55:33 PM7/21/94
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In article <CtALt...@odin.corp.sgi.com>, nstr...@netmare.corp.sgi.com (Nicholas Strauss) writes:
> The AV-8B carries a 25mm cannon. The following is from memory,
> so I'll do my best:
>
> GAU-12/U Equalizer
> 25mm, 5 barrel cannon
> 3600 rounds per minute in Harrier installation, driven pneumatically
> (perhaps by bleed air?)
> 300 rounds ammo.
> Nominal dispersion 1.3mil (seems awefully good, but thats what
> I read)
> Muzzel velocity 3200-3400 fps (depends on ammo, HEDP, AP, etc.)
>
> Basically, its derived from the GAU-8 in the A-10, rather than
> from the 20mm Vulcan used in just about all other US aircraft.
>
> The GAU-12 Equalizer is not, to my knowledge used in any other
> aircraft. It is however part of the Marines LAV-AD air defense
> vehicle (not yet in service), and a number of ship-board mounts
> for air defense and small boat defense. I believe the new US
> special warefare craft (Cyclone class?) and the new Israli
> SAAR-V corvettes use them primarily for the latter purpose.

The Cyclone class mount 2 single-barrel 25mmm cannon (1 bow, 1 stern) as their
primary weapons,backed by 2-3 M2's and a Mark 19 automatic grenade launcher...
at least the USS Squal did when she came through memphis. Nice anti-air...they
have a ring on the upper deck where a guy w/ a stinger stands:)

>
> Its also been thought of for use on helicopters. I've seen it
> associated, experimentally, with Marine Cobras and the V-22,
> but nothing operational in either case.
>
> By the way, the A-10's gun is a 7-barrel 30mm, firing 4200 rpm.
>
>
>
> --Nick
>
>
> --
> ______________________________________
> \ \ _ ______ |
> \ NICHOLAS STRAUSS \ / \___-=O`/|O`/__|
> \ Silicon Graphics-Network Operations \_______\ / | / )
> / nstr...@netmare.corp.sgi.com / `/-==__ _/__|/__=-|
> / pi...@leland.stanford.edu / * \ | |
> /_____________________________________/ (o)
>
>
> "What, are you kidding?? We're on a spaceship! This place is *crawling*
> with toothpicks!"

--

+============================================================================+
# \ / #
# Robert Landrigan \ _ / #
# uralan...@msuvx1.memphis.edu _________\__( )__/_________ #
# The University of Memphis x/ _| |( . )| |_ \x #
# x \_/ ---*\_/ x #
+============================================================================+
\ There is no drug better than JP-4:) /
\_____________________________________________/


Isaac Kuo

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Jul 21, 1994, 3:06:16 PM7/21/94
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In article <CtALt...@odin.corp.sgi.com>,

Nicholas Strauss <nstr...@netmare.corp.sgi.com> wrote:
>The AV-8B carries a 25mm cannon. The following is from memory,
>so I'll do my best:

>GAU-12/U Equalizer
>25mm, 5 barrel cannon

Before there's any confusion on this (or maybe this will only
add confusion), all British Harriers use 30mm revolver ADEN
cannon. They are fitted individually in those long bumps
on the bottom of the fuselage. On USMC Harriers, the 25mm
GAU-12 is fitted in one of those bumps with the ammunition
supply in the other bump.
--
_____ Isaac Kuo (isaa...@math.berkeley.edu)
__|_>o<_|__
/___________\ "Kore wa meeree desu" <This is an order (to kiss)>
\=\>-----</=/ --Hiyase Misa (Macross)

Kenta F. Shinjo

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Jul 21, 1994, 5:14:03 PM7/21/94
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The Harrier in the movie "True Lies" was indeed the AV-8B Version.
However, the Harrier does not carry a 30mm gatling cannon. It carries
a 25mm Gatling cannon in a pod which is attached to its belly. There
are two pods underneath. One side is for the gun itself while the other
side holds the ammo. The A-10 Thunderbolt II does not carry a 50mm cannon.
It carries a GAU-8 30mm cannon specifically designed to punch holes in
tanks

John Buehler

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Jul 22, 1994, 9:55:36 AM7/22/94
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Nicholas Strauss writes:

>The AV-8B carries a 25mm cannon. The following is from memory,
>so I'll do my best:
>
>GAU-12/U Equalizer
>25mm, 5 barrel cannon
>3600 rounds per minute in Harrier installation, driven pneumatically
>(perhaps by bleed air?)
>300 rounds ammo.
>Nominal dispersion 1.3mil (seems awefully good, but thats what
> I read)
>Muzzel velocity 3200-3400 fps (depends on ammo, HEDP, AP, etc.)
>
>Basically, its derived from the GAU-8 in the A-10, rather than
>from the 20mm Vulcan used in just about all other US aircraft.

OK, we know the gun on the A-10 is for shooting tanks. What's the role of
the gun on the Harrier? Shooting everything *but* tanks? Does it also use
the depleted-uranium rounds that the A-10 uses? Is that the AP round?

It seems like a lot of gun, and I'm wondering what it gets pointed at.
Considering the thrust generated by the GAU-8 Avenger in the A-10, I wonder
what the firing parameters are for a hovering A/V-8B.

--
John Buehler
Template Software
13100 Worldgate Drive, Suite 340
Herndon, VA 22070-4382
email: bue...@template.com voice: 703-318-1000 fax:703-318-7378

Nicholas Strauss

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Jul 22, 1994, 10:05:57 AM7/22/94
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In article <30mgv8$f...@agate.berkeley.edu>, isaa...@lhasa.berkeley.edu (Isaac Kuo) writes:
|> In article <CtALt...@odin.corp.sgi.com>,
|> Nicholas Strauss <nstr...@netmare.corp.sgi.com> wrote:
|> >The AV-8B carries a 25mm cannon. The following is from memory,
|> >so I'll do my best:
|>
|> >GAU-12/U Equalizer
|> >25mm, 5 barrel cannon
|>
|> Before there's any confusion on this (or maybe this will only
|> add confusion), all British Harriers use 30mm revolver ADEN
|> cannon. They are fitted individually in those long bumps
|> on the bottom of the fuselage. On USMC Harriers, the 25mm
|> GAU-12 is fitted in one of those bumps with the ammunition
|> supply in the other bump.
|> --

Almost...the latest Brit. Harrier (their equivalent of the AV-8B,
I think it goes by Gr.7) uses two 25mm Aden. Apparently the
30mm Aden was regarded as having reached the end of its evolution
so they wanted something new.

One gun in each pod, cumulative rate of fire adds up to about that
of the GAU-12, each gun has its own ammo in its pod, I think about 140
rounds each. So pretty much adds up to an equivalent to the Marine
installation.


--Nick

|> _____ Isaac Kuo (isaa...@math.berkeley.edu)
|> __|_>o<_|__
|> /___________\ "Kore wa meeree desu" <This is an order (to kiss)>
|> \=\>-----</=/ --Hiyase Misa (Macross)

--

______________________________________
\ \ _ ______ |
\ NICHOLAS STRAUSS \ / \___-=O`/|O`/__|
\ Silicon Graphics-Network Operations \_______\ / | / )
/ nstr...@netmare.corp.sgi.com / `/-==__ _/__|/__=-|
/ pi...@leland.stanford.edu / * \ | |
/_____________________________________/ (o)


"What, are you kidding?? We're on a spaceship! This place is *crawling*

with toothpicks!" -- the silly quote

"Who dares, wins." -- the serious quote

Urban Fredriksson

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Jul 22, 1994, 12:27:45 PM7/22/94
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isaa...@lhasa.berkeley.edu (Isaac Kuo) writes:

>Before there's any confusion on this (or maybe this will only
>add confusion), all British Harriers use 30mm revolver ADEN
>cannon.

The GR.7 has a pair of Aden 25 25mm revolver cannons firing the
same round as the gun in the AV-8B.
--
Urban Fredriksson u...@icl.se To get rid of an enemy, make him a friend.

Allison Scott MacEachern

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Jul 22, 1994, 1:02:29 PM7/22/94
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With regard to RAF Harriers...the AV-8B equivalents (mostly
GR.7s) are supposed to carried two 25mm Adens (developed from the
30mm), but they haven't been cleared for it yet.

Scott MacEachern

Isaac Kuo

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Jul 22, 1994, 2:17:44 PM7/22/94
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In article <CtCHt...@odin.corp.sgi.com>,

Nicholas Strauss <nstr...@netmare.corp.sgi.com> wrote:
>In article <30mgv8$f...@agate.berkeley.edu>, isaa...@lhasa.berkeley.edu (Isaac Kuo) writes:
>|> Before there's any confusion on this (or maybe this will only
>|> add confusion), all British Harriers use 30mm revolver ADEN

>Almost...the latest Brit. Harrier (their equivalent of the AV-8B,


>I think it goes by Gr.7) uses two 25mm Aden. Apparently the
>30mm Aden was regarded as having reached the end of its evolution
>so they wanted something new.

Oh. My mistake.

>One gun in each pod, cumulative rate of fire adds up to about that
>of the GAU-12, each gun has its own ammo in its pod, I think about 140
>rounds each. So pretty much adds up to an equivalent to the Marine
>installation.

What is the barrel length on the 25mm revolvers? I know that in
the 30mm installations, the ammunition was stored behind each
cannon, necessarily resulting in barrel lengths much shorter
than the GAU-12.
--

MegaZone

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Jul 22, 1994, 7:43:13 PM7/22/94
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bue...@lithium.template.com (John Buehler) shaped the electrons to say:

>the gun on the Harrier? Shooting everything *but* tanks? Does it also use
>the depleted-uranium rounds that the A-10 uses? Is that the AP round?

The guns on the A-10 and AV-8B are only related in that they are both made
by GE. To the best of my knowledge none of the important hardware is
common on the GAU-8/A and GAU-12/U. And they use completely different
rounds. The Avenger is 30mm, the Equalizer is 25mm.

And I don't believe you want to fire the gun while hovering, it would
seem a good way to get gun gas ingestion. Besides, you don't normally
hover a Harrir in combat, the engine gets hot fast.

--
mega...@wpi.wpi.edu mega...@world.std.com mega...@hotblack.gweep.net
"I have one prejudice, and that is against stupidity. Use your mind, think!"
Moderator: WPI anime FTP site, 130.215.24.1 /anime, the anime FanFic archive;
rec.arts.anime.stories, questions to anime-dojin...@wpi.wpi.edu
GTW/HU d-- -p+ c++(++++) l u+ e+ m+(*)@ s++/+ !n h- f+ !g w+ t+@ r+@ y+(*)

Urban Fredriksson

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Jul 23, 1994, 1:23:57 PM7/23/94
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bue...@lithium.template.com (John Buehler) writes:

> OK, we know the gun on the A-10 is for shooting tanks. What's the role of
>the gun on the Harrier? Shooting everything *but* tanks?

If you load the 25 mm gun with Fuzeless Multipurpose (also known
as Pyrotechnically Incendiary Explosive) rounds they'll go
through 18 mm armour plate striking at 45 deg. Would this suffice
against the weakest armour on a tank?

Donald D Forsling

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Jul 24, 1994, 10:26:03 PM7/24/94
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In article <Ct9uE...@ucdavis.edu> ez02...@dale.ucdavis.edu (Matthew C. Masuda) writes:
>After seeing True Lies last night, a friend told me that the Harrier
>carries 30mm guns. He also told me that the A10 packs a 4-barrelled 50mm
>cannon, so... :) Now I'm curious as to what exactly is carried by the AV-8s
>(those were Bs, right, with the big bubble canopy?). I would've assumed
>that they carry the 20mm rotary cannon, but that's just a guess. Any
>experts care to enlighten me?

The Harrier II carries a 25mm Aden Cannon. It is on a detachable pod so
that it can be installed or taken off as required for the mission. I
believe it only carries 300 rounds, but don't quote me. Granted it isn't a
can opener like the A-10's 30mm, but it'll ruin your day if you're on the
wrong end, just the same.
--
Don Forsling | -- WOI Radio News -- |
Iowa State University |"Remember: When news breaks out, |
fors...@iastate.edu | we don't care." |

bu...@vaxc.cc.monash.edu.au

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Jul 25, 1994, 6:43:43 AM7/25/94
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fors...@iastate.edu (Donald D Forsling) writes:
>ez02...@dale.ucdavis.edu (Matthew C. Masuda) writes:
>>After seeing True Lies last night, a friend told me that the Harrier
>>carries 30mm guns. He also told me that the A10 packs a 4-barrelled 50mm
>>cannon, so... :) Now I'm curious as to what exactly is carried by the AV-8s
>>(those were Bs, right, with the big bubble canopy?). I would've assumed
>>that they carry the 20mm rotary cannon, but that's just a guess. Any
>>experts care to enlighten me?
>
> The Harrier II carries a 25mm Aden Cannon. It is on a detachable pod so
> that it can be installed or taken off as required for the mission. I
> believe it only carries 300 rounds, but don't quote me. Granted it isn't a
> can opener like the A-10's 30mm, but it'll ruin your day if you're on the
> wrong end, just the same.

Donald's right. The Harrier does not have a gattling style gun inside
the fuselage. The gun is a single barreled cannon, carried in a pod on the
belly of the plane. The pod is long and thin and looks like a fin or weapon
pylon. There are actually 2 pods, one has the gun, the other has the ammo for
it, and there is a chute that connects them and feeds the ammo to the gun.
The British found out that having the pods installed makes vertical
takeoffs easier because they help keep the jet exhaust trapped under the
plane, creating a bit more lift.

Garet...@cc.monash.edu.au
DOD# 251 '84 VF 750 Closet Ducatisto
Disclaimer: An idle mind is the devil's nintendo!

Nicholas Strauss

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Jul 25, 1994, 9:18:34 AM7/25/94
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In article <30plih$8...@bigboote.WPI.EDU>, mega...@obsidian.WPI.EDU (MegaZone) writes:
|> bue...@lithium.template.com (John Buehler) shaped the electrons to say:
|> >the gun on the Harrier? Shooting everything *but* tanks? Does it also use
|> >the depleted-uranium rounds that the A-10 uses? Is that the AP round?
|>
|> The guns on the A-10 and AV-8B are only related in that they are both made
|> by GE. To the best of my knowledge none of the important hardware is
|> common on the GAU-8/A and GAU-12/U. And they use completely different
|> rounds. The Avenger is 30mm, the Equalizer is 25mm.

GE describes the Equalizer as using Avenger derived technology. I
suppose by this they are contrasting it with a weapons derived from the
much older M61 20mm technology. Instead, they have incoroprated all
the ideas developed from the Avenger program.

Whatever...


--Nick


--
______________________________________
\ \ _ ______ |
\ NICHOLAS STRAUSS \ / \___-=O`/|O`/__|
\ Silicon Graphics-Network Operations \_______\ / | / )
/ nstr...@netmare.corp.sgi.com / `/-==__ _/__|/__=-|
/ pi...@leland.stanford.edu / * \ | |
/_____________________________________/ (o)


"What, are you kidding?? We're on a spaceship! This place is *crawling*

MegaZone

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Jul 25, 1994, 3:37:13 PM7/25/94
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bu...@vaxc.cc.monash.edu.au shaped the electrons to say:

>the fuselage. The gun is a single barreled cannon, carried in a pod on the
>belly of the plane. The pod is long and thin and looks like a fin or weapon
>pylon. There are actually 2 pods, one has the gun, the other has the ammo for
>it, and there is a chute that connects them and feeds the ammo to the gun.

SOrry, you're mixing things.

The Original Harrier used TWO 30mm Aden pods with their own guns and
ammo in each. They are single barrelled cannon.

The Harrier II is different.

IN USMC service it mounts one 25mm 5-barrelled gatling cannon, the
Equalizer, in one pod and the ammo in the other.

In British service it is to mount 2 25mm Aden single barrel cannon
in two pods as with the older 30mm ones. Seperate cannon and ammo
in independent pods.

The pods are actually sort of pudgy if you get close.

Mounting the pods crates a capture area for air under the body wich aids
vertical flight. This was taken into account on the Harrier II and
forward and rear 'gates' were added that lower for forward flght boxing
it in on all sides. The effect is so appreciable that when the guns
are not carried they mount metal strakes in their place to keep the
box effect.

LIM KENNETH IGNATIUS

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Jul 26, 1994, 3:30:37 PM7/26/94
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Donald D Forsling (fors...@iastate.edu) wrote:

: The Harrier II carries a 25mm Aden Cannon. It is on a detachable pod so


: that it can be installed or taken off as required for the mission. I
: believe it only carries 300 rounds, but don't quote me. Granted it isn't a
: can opener like the A-10's 30mm, but it'll ruin your day if you're on the
: wrong end, just the same.
: --
: Don Forsling | -- WOI Radio News -- |
: Iowa State University |"Remember: When news breaks out, |
: fors...@iastate.edu | we don't care." |

Thats the British version, 2 Adens in the belly pods. The AV8-B carries
one 25 mm GAU-12 (5 barrels?) with shells in the other pod
The Aden is 30mm and very hard hitting as single barrel guns go.

Paul F Austin

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Jul 26, 1994, 6:32:24 PM7/26/94
to

>If you load the 25 mm gun with Fuzeless Multipurpose (also known
>as Pyrotechnically Incendiary Explosive) rounds they'll go
>through 18 mm armour plate striking at 45 deg. Would this suffice
>against the weakest armour on a tank?
>--
> Urban Fredriksson u...@icl.se To get rid of an enemy, make him a friend.

Since the 25mm round is ballistically superior to the 30mm ADEN/DEFA round
which the Israeli bust tanks with, I think it can be fairly effective against
tank top armor.

By the way, thanks for the info on autocannon. Is it possible for a Gatling to
be kept spinning (say as long as the master-arm switch is on) and have the
trigger enable ammunition feed to get around the startup delay in spinning up
the barrells?
paul austin

Paul L. Suh

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Jul 27, 1994, 1:10:53 AM7/27/94
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In article <paustin.3...@ic1d.harris.com>, pau...@ic1d.harris.com
(Paul F Austin) wrote:

> By the way, thanks for the info on autocannon. Is it possible for a
Gatling to
> be kept spinning (say as long as the master-arm switch is on) and have the
> trigger enable ammunition feed to get around the startup delay in spinning up
> the barrells?
> paul austin

Have you been following the Gatling vs. Revolver thread? This discussion
is going on right now.


--Paul

LIM KENNETH IGNATIUS

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Jul 27, 1994, 2:29:21 AM7/27/94
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LIM KENNETH IGNATIUS (art2...@leonis.nus.sg) wrote:

: Donald D Forsling (fors...@iastate.edu) wrote:

: : The Harrier II carries a 25mm Aden Cannon. It is on a detachable pod so
: : that it can be installed or taken off as required for the mission. I
: : believe it only carries 300 rounds, but don't quote me. Granted it isn't a
: : can opener like the A-10's 30mm, but it'll ruin your day if you're on the
: : wrong end, just the same.
: : --
: : Don Forsling | -- WOI Radio News -- |
: : Iowa State University |"Remember: When news breaks out, |
: : fors...@iastate.edu | we don't care." |

Allow me to avert my crimson visage. Let's try again.
British Harrier 2- 2 Aden 25mm with 100 rds each. Has 2 extra
hardpoints forward of the outriggers, specially for Aim-9 launch rails.
American AV-8B- 1 25mm GAU-12 5 barreled Gatling type with 300 rds in
other pod.
Neither weapon has sufficient power to kill hardshell tanks, but i've
seen the Cobra's 20mm nosegun blow up APCs and thats probably what the
Harrier would be going after with CBUs and such.
Ken Lim

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