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Author Topic: MK 71 Lightweight 8" gun.  (Read 23501 times)

Offline sferrin

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Re: MK 71 Lightweight 8" gun.
« Reply #30 on: January 15, 2019, 11:28:59 am »
Technical Evaluation of the 8-Inch Major Caliber Lightweight Gun Mount, Mark 71 Mod 0.  (All 39 Mb.)

https://apps.dtic.mil/dtic/tr/fulltext/u2/907961.pdf

"DARPA Hard"  It ain't what it use to be.

Offline TomS

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Re: MK 71 Lightweight 8" gun.
« Reply #31 on: January 16, 2019, 10:38:12 am »
That's an interesting read.  Sounds like if there was a real problem at this stage of the testing, it was that the ammunition sucked.  Hardly surprising since it seems to have been basically war surplus stock.

Offline Pioneer

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Re: MK 71 Lightweight 8" gun.
« Reply #32 on: February 05, 2019, 03:06:33 am »
Wow, found this both very cool and interesting!!😮


Quote
Laser-guided 8" (20.3 cm) Paveway or CLGP developed in the 1970s at Dahlgren Laboratory, Virginia.

USS Hull made 5 out of 5 hits on moored ex-destroyer target USS Burns (DD-588) in June 1976 using these projectiles.


(Source: NavWeaps. http://www.navweaps.com/Weapons/WNUS_8-55_mk71.php)


Regards
Pioneer
And remember…remember the glory is not the exhortation of war, but the exhortation of man.
Mans nobility, made transcendent in the fiery crucible of war.
Faithfulness and fortitude.
Gentleness and compassion.
I am honored to be your brother.”

— Lt Col Ralph Honner DSO M

Offline Pioneer

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Re: MK 71 Lightweight 8" gun.
« Reply #33 on: February 05, 2019, 03:09:07 am »
Oh, and this planned load out if Spruance Class adopted the Mk71 -

Quote
The planned ammunition stowage for the Spruance class (DD-963) was as follows:

The first platform magazine (Fr. 77-94) held 129 ballistic projectiles, 119 standard propellant charges and 32 reduced charges.

The second platform magazine (Fr. 58-94) held 256 ballistic projectiles, 266 standard propellant charges, 40 Guided Projectile (GP) charges and 24 clearing charges.

The third platform magazine (Fr. 58-94) held 40 guided projectiles.

Including the ready service drum, the total ammunition stowage was 500 projectiles (ballistic and guided) and 556 propellant charges (standard, reduced, clearing and GP)
.

(Source: NavWeaps. http://www.navweaps.com/Weapons/WNUS_8-55_mk71.php)


Regards
Pioneer
And remember…remember the glory is not the exhortation of war, but the exhortation of man.
Mans nobility, made transcendent in the fiery crucible of war.
Faithfulness and fortitude.
Gentleness and compassion.
I am honored to be your brother.”

— Lt Col Ralph Honner DSO M

Offline sferrin

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Re: MK 71 Lightweight 8" gun.
« Reply #34 on: February 05, 2019, 05:14:15 am »
Oh, and this planned load out if Spruance Class adopted the Mk71 -

Quote
The planned ammunition stowage for the Spruance class (DD-963) was as follows:

The first platform magazine (Fr. 77-94) held 129 ballistic projectiles, 119 standard propellant charges and 32 reduced charges.

The second platform magazine (Fr. 58-94) held 256 ballistic projectiles, 266 standard propellant charges, 40 Guided Projectile (GP) charges and 24 clearing charges.

The third platform magazine (Fr. 58-94) held 40 guided projectiles.

Including the ready service drum, the total ammunition stowage was 500 projectiles (ballistic and guided) and 556 propellant charges (standard, reduced, clearing and GP)
.

(Source: NavWeaps. http://www.navweaps.com/Weapons/WNUS_8-55_mk71.php)


Regards
Pioneer

There's a picture of an advertisement showing an artist's concept of a Spruance with a Mk71 up front on the board somewhere.  I'll post it in this thread later if nobody else has by then.
"DARPA Hard"  It ain't what it use to be.

Offline TomS

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Re: MK 71 Lightweight 8" gun.
« Reply #35 on: February 05, 2019, 06:52:25 am »
I'd love to see that picture. I poked around briefly and couldn't find it.  ISTR that the Spruance could only take an 8-inch forward because there is insufficient hull depth aft for a second mount.  So a retrofit would have ended up with an odd situation of having both 5-inch and 8-inch guns no the same ships.

Offline cjwilks

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Re: MK 71 Lightweight 8" gun.
« Reply #36 on: February 05, 2019, 11:59:03 pm »
Here's an FMC rendition of a 8"/ 60 Mk 71 mounted on Spruance DD. I can't remember where I got it from, maybe Cmdr. Salamander's blog. No, I got it from NAVWEAPS (TAPTALK). the attachments are awaiting approval.
« Last Edit: February 08, 2019, 11:54:35 am by cjwilks »

Offline TinWing

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Re: MK 71 Lightweight 8" gun.
« Reply #37 on: February 08, 2019, 08:35:23 am »
Here's an FMC rendition of a 8"/ 60 Mk 71 mounted on Spruance DD. I can't remember where I got it from, maybe Cmdr. Salamander's blog. No, I got it from NAVWEAPS.

The attachment doesn't show up.

Offline sferrin

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Re: MK 71 Lightweight 8" gun.
« Reply #38 on: February 08, 2019, 08:46:51 am »
I'd love to see that picture. I poked around briefly and couldn't find it.  ISTR that the Spruance could only take an 8-inch forward because there is insufficient hull depth aft for a second mount.  So a retrofit would have ended up with an odd situation of having both 5-inch and 8-inch guns no the same ships.

Damn.  Forgot.  "Note to self. . ."
« Last Edit: February 08, 2019, 12:12:30 pm by sferrin »
"DARPA Hard"  It ain't what it use to be.

Offline TomS

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Re: MK 71 Lightweight 8" gun.
« Reply #39 on: February 08, 2019, 10:24:48 am »
Here's an FMC rendition of a 8"/ 60 Mk 71 mounted on Spruance DD. I can't remember where I got it from, maybe Cmdr. Salamander's blog. No, I got it from NAVWEAPS.

The attachment doesn't show up.

I think only people with certain number of posts can add attachments.

Offline cjwilks

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Re: MK 71 Lightweight 8" gun.
« Reply #40 on: February 08, 2019, 11:52:09 am »
The attachments are awaiting approval.

Offline sferrin

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Re: MK 71 Lightweight 8" gun.
« Reply #41 on: February 08, 2019, 12:12:53 pm »
See attached.
"DARPA Hard"  It ain't what it use to be.

Offline TomS

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Re: MK 71 Lightweight 8" gun.
« Reply #42 on: February 08, 2019, 12:18:30 pm »
Oh, that's nice.  Thank you for digging it up. 


Offline cjwilks

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Re: MK 71 Lightweight 8" gun.
« Reply #43 on: February 10, 2019, 11:02:31 pm »
How long does it take for attachments to be approved? I put some on 5 days ago, and they still show waiting approval!

Offline Pioneer

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Re: MK 71 Lightweight 8" gun.
« Reply #44 on: February 11, 2019, 11:29:01 am »
See attached.

Quote
A 60 calibre barrel for increased range

So how long was the trial Mk71's barrel then?

Regards
Pioneer
And remember…remember the glory is not the exhortation of war, but the exhortation of man.
Mans nobility, made transcendent in the fiery crucible of war.
Faithfulness and fortitude.
Gentleness and compassion.
I am honored to be your brother.”

— Lt Col Ralph Honner DSO M