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The U.S. Navy Quietly Tested Mach 3 Heavy Gun Shells That Could Revolutionize Surface Warfare
Popular Mechanics ^ | January 8, 2019 | Kyle Mizokami

Posted on 01/09/2019 9:39:43 AM PST by C19fan

The U.S. Navy, without fanfare or notice, tested a new weapon last summer that could revolutionize surface warfare. The hyper velocity projectile (HVP) is a Mach 3 shell fired from existing guns on cruisers and destroyers. A guided projectile, HVP can drop high explosives on enemies on the ground up to three times as far as conventional ship gun ammo with a high rate of precision. It can also intercept incoming anti-ship missiles, providing an economical alternative to increasingly expensive anti-missile interceptors.

According to USNI News, the guided missile destroyer USS Dewey fired 20 new HVP projectiles during the 2018 Rim of the Pacific (RIMPAC) exercises. Although the test was unclassified, it was not reported at the time by the U.S. Navy. It was the first known use of HVPs at sea by a warship.

Large surface combatants in the U.S. Navy all carry the Mk.45 5-inch (127mm) Naval Gun System. Unlike railguns, these are chemical energy guns that use gunpowder to launch projectiles, a basic technology hundreds of years old. Guided missile cruisers of the Ticonderoga-class carry two Mk.45 guns, while guided missile destroyers of the Arleigh Burke-class carry one. These guns are typically used for shore bombardment, softening up enemy defenses before an amphibious assault, although in a pinch they could be unleashed against enemy surface ships and incoming aerial threats.

(Excerpt) Read more at popularmechanics.com ...


TOPICS: Military/Veterans
KEYWORDS: geraldbull; guns; navy; usn
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I wonder if this system is scalable. For example, if a 5 inch HVP can fly at Mach 3 with a range of 40 miles what would say an 8 inch version or higher be able to do. What is the capabilities of a 16 inch battleship firing 16 inch versions of these rounds.
1 posted on 01/09/2019 9:39:43 AM PST by C19fan
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To: C19fan

None. The Iowa class is in mothballs or on display. They won’t be coming back.


2 posted on 01/09/2019 9:43:20 AM PST by 17th Miss Regt
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To: C19fan
The U.S. Navy Quietly Tested Mach 3 Heavy Gun Shells

I doubt it was quiet when they were testing...

3 posted on 01/09/2019 9:44:21 AM PST by Izzy Dunne (Hello, I'm a TAGLINE virus. Please help me spread by copying me into YOUR tag line.)
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To: Izzy Dunne

Yeah, I thought it was anything but quiet


4 posted on 01/09/2019 9:46:10 AM PST by FatherofFive (Islam is EVIL and needs to be eradicated)
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To: C19fan

any idea of the barrel twist?


5 posted on 01/09/2019 9:50:17 AM PST by sasquatch
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To: C19fan

What the Navy really needs are rapid firing 5” “shotgun” shells to send a hail of steel to engage incoming missiles as a last line of defense.


6 posted on 01/09/2019 9:50:19 AM PST by allendale (.)
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To: C19fan

Headline writer has odd idea of what constitutes a naval heavy gun.

18,16,15,14,12.

Maybe even 8.

But not 5


7 posted on 01/09/2019 9:51:19 AM PST by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: sasquatch

Single barrel (progressive RH parabolic twist)


8 posted on 01/09/2019 9:54:35 AM PST by sasquatch
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To: C19fan
The U.S. Navy Quietly Tested Mach 3 Heavy Gun Shells That Could Revolutionize Surface Warfare

These will be a partial defense to high Mach number missiles, but probably not to sub-orbital ballistic warheads.

Bottom line, carrier groups, capital ships and sometimes even submarines will face a growing risk of not surviving an engagement.

What is the capabilities of a 16 inch battleship firing 16 inch versions of these rounds.

Gerald Bull could have told us that 20 years ago, if the US had been smart enough to keep him on the DOD payroll.

9 posted on 01/09/2019 9:55:33 AM PST by Navy Patriot (America NEEDS Mob Rule, another European and Mid East World War and a universal Draft)
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To: C19fan

Both up and down...

When does this come to the infantry man’s gun ?!?


10 posted on 01/09/2019 9:59:43 AM PST by Pikachu_Dad ("the media are selling you a line of soap)
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To: Navy Patriot
"These will be a partial defense to high Mach number missiles, but probably not to sub-orbital ballistic warheads."

I believe their #1 purpose is to defend against China's new high speed missiles/torpedoes that travel barely above the water. They're currently the main threat to our large ships.

11 posted on 01/09/2019 10:04:30 AM PST by Tell It Right (1st Thessalonians 5:21 -- Put everything to the test, hold fast to that which is true.)
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To: Izzy Dunne

The writer of that headline will get to hear that said for years to come.


12 posted on 01/09/2019 10:06:36 AM PST by Rockingham
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To: BenLurkin
"But not 5"

I guess if a 5" gun is all you have in inventory - that would be "heavy". I mean, it's heavier than the .50 cal....

13 posted on 01/09/2019 10:06:52 AM PST by Psalm 73 ("I will now proceed to entangle the entire area".)
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To: C19fan

https://news.usni.org/2015/06/01/navy-researching-firing-mach-5-guided-round-from-standard-deck-guns

Testing has been going on for years.

The 5” has to be modified to accept the round.

Yet another Navy program that’ll take decades to implement if ever.


14 posted on 01/09/2019 10:18:29 AM PST by Snickering Hound
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To: Tell It Right
Partial defense, these modern high mach number missiles have evasive ability, and small defensive weapons must hit about a two foot circle while the attacking weapon sees a 1000 foot target 100 feet high.

Larger defensive weapons will use a debris field obstruction, both are only partially effective.

15 posted on 01/09/2019 10:29:12 AM PST by Navy Patriot (America NEEDS Mob Rule, another European and Mid East World War and a universal Draft)
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To: C19fan

The U.S. Navy Quietly Tested Mach 3 Heavy Gun Shells That Could Revolutionize Surface Warfare .................................. An exact copy should appear on the Chinese navy ships shortly.


16 posted on 01/09/2019 10:30:28 AM PST by Bringbackthedraft (What is earned is treasured, what is free is worth what you paid for it.)
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To: 17th Miss Regt
The Iowa class is in mothballs or on display. They won’t be coming back.

Actually, the Iowa class battle ships on display like the USS Missouri are capable of being brought into service on short notice.

17 posted on 01/09/2019 10:36:07 AM PST by painter ( Isaiah: �Woe to those who call evil good and good evil,")
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To: Snickering Hound

I don’t believe The article made mention of modifications to the gun. Not saying it doesn’t. But if they could make the round to feed in any gun without gun mods, that would be a game changer.


18 posted on 01/09/2019 10:43:18 AM PST by AFreeBird
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To: Snickering Hound

Well, the 2015 article was about the program as a theoretical exercise, and this article is about an actual sea trial. So the thing is moving along.


19 posted on 01/09/2019 10:47:11 AM PST by buwaya
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To: C19fan; LonePalm

Ping. Thinking of you.
#NoHomo


20 posted on 01/09/2019 10:56:00 AM PST by Cletus.D.Yokel (Catastrophic, Anthropogenic Climate Alterations: The acronym explains the science.)
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