Re: OMG The mythical Low Mix Amphibious Assault Unit Connector!
What's a Ghost ship got under the shroud?
"The US Navy wants something between airlifting and traditional sealifts. Airlift is very fast but very expensive ... with very small amounts of equipment moved at a time. Sealifts are much cheaper but extremely slow.
...military bureaucracies tended to be very conservative when it came to purchasing new equipment, especially if it involved "exotic technology".
..."Although I understand the Russians have been working on supercavitation for some time, this is still fairly immature technology," Mr Roggeveen said.
...a high-speed stealth "attack helicopter on the water" that could revolutionise navies and the shipping industry."
Read more:http://www.smh.com.au/technology/sci-tech/meet-the-ghost--the-stealth-ship-radar-cant-see-20110831-1jldi.html#ixzz1Wbx0IWTP
http://www.smh.com.au/technology/sci-tech/meet-the-ghost--the-stealth-ship-radar-cant-see-20110831-1jldi.html
All interesting...
I'd like to know about that immersed part of the supercavitating hull shape. No mention of rocket exhaust, etc, introduced at the bow... Is it then developed from that Russian derived deep narrow triangular prism wedgy shaped thingo under that super smooth riding high speed outboard powered runabout marketed a couple years ago by some importer? That bottom looked mean, sharp edged, flat tipped, like some cut gemstone facet, sorta, and incredibly deep for the speed if not for the smoothness claimed.
--- Inbolger@yahoogroups.com, BruceHallman <hallman@...> wrote:
>
> I converted the "pdf" to a "jpg" for better viewing.
>
>http://hallman.org/bolger/LCU-F.jpg
>
Re: Design #673 LCU-F
Thanks to Bruce Hallman (and the good Captain Thomas of NAVSEA 05-D) you are seeing a part of what we figured out of the USN - and what took up so much of our energies in the mid 2000s in this creative conceptual peak-performance for this client.
I know. It sounds pretty improbable for PB&F be the sole contributors to this discussion within this most powerful navy to conceptually fulfill that list of requirements. And all based of Bolger concepts, such as folding hulls, #615 "Diamond" bow-section, shallow, boxy, 12:1 lean, modest power (only 2400hp to carry up to 200tons at 18-19kts displacement-speed). Sober reason. No contact anxieties with such "unorthodoxies", nothing "un"-orthodox about this in this office. Good thing someone in NAVSEA thought to ask us...
We proposed that they'd build and test 3 hulls ($25-30 million each vs. 1x SH-60 SEAHAWK helo system at 20mill+) :
- #1 Hull - Marine-Corps-traditional 'Use-it-until-it-breaks' regime at Camp Lejeune (NC) with endless assault-landing exercises to sound out her short-comings via 'hands-on' experience.
- #2 Hull - Long-Distance structural stress-test by running trans-oceanic (fuel instead of assault load) until unarguable hull-stresses define the maximum number of bending cycles on this super-lean kayak-like box-structure,
- #3 Hull - IFS Artillery modules inserted to be tested at Patuxent or Aberdeen Proving Grounds with 8" barrels used until the most advanced recoil-controls fail to stop the forces from cracking her structure.
Between unit-cost and capability, it certainly is a most affordable system for much of the work the US Navy carries the US Marines aboard.
Perhaps we'll see Bolger leave his foot-print within the fleet-mix of USN. A ''Gator' for the 'Gator Navy' running Marines from International Waters on to someone's beach-front property...
Susanne Altenburger, PB&F
P.S. Glossary:
- OTH-200 = Over The Horizon from 200 nm out (currently they hope for OTH-40 due to helo-range issues and short legs of LCACs or (cancelled) EFV (planing tank...).
- MEU = Marine Expeditionary Unit
- IFS = Inshore Fire Support to protect landing and advancing troops moving inlands.
----- Original Message -----
From:BruceHallmanSent:Thursday, August 04, 2011 11:13 AMSubject:[bolger] OMG The mythical Low Mix Amphibious Assault Unit Connector!Oh, the timing. My MAIB arrived in the mail last night, so I got to
read that article. One immediate impression: This design SACPAS-3
481 is the first PB&F design that I can recall that is specifically
designed and intended to be the maximum boat that can be fit inside a
standard 40 foot shipping container. Nice.
That said, I did a little Google searching and stumbled upon a
description of another PB&F NavSea concept design (which has been
mythical 'under wraps' to most of us for almost a decade until now)
which is the fast heavy equipment carrier, LCU-F. I recall learning
of this concept design during a conversation the Bolger Memorial
weekend, but until now I had seen no pictures. Anyway, WOW! (Imagine
a Folding Schooner, => Insolent60 => Godzilla on steroids!!!)
Look at pages 16 through 19 of this 2009 'pdf' Powerpoint presentation
in this URL link...
http://navalengineers.net/Proceedings/HPMV2009/Presentations/ThomasM.pdf
On Thu, Aug 4, 2011 at 2:38 AM,Susanne@...
<philbolger@...> wrote:
>
>
>
> Indeed, Bruce.
> The current MAIB issue begins a narrative on this project. The last Phil and I discussed. The first design without him. #681 is the beginning of the 'Post-Phil' design numbers. I hope I'll do justice to his legacy with this project.
> Susanne Altenburger, PB&F
>
> P.S. Nothing wrong with 'eccentric'... particularly if the design-work adds to the spectrum of options and thus shifts 'the center'...
>
> ----- Original Message -----
> From: BruceHallman
> To:bolger@yahoogroups.com
> Sent: Wednesday, August 03, 2011 11:07 AM
> Subject: Re: [bolger] Re: Library of Congress?
>
>
> On Wed, Aug 3, 2011 at 4:44 AM,Susanne@...
> <philbolger@...> wrote:
> > And this project is now covered in the current and future issues of MAIB.
>
> This US Navy commission is very exciting, and I am eagerly waiting to
> read about it in MAIB. Keep on hanging it there!
>
> I am guessing this is a prototype SACPAS? "Security Assistance
> Contingency Producible Affordable System", in other words, an easy to
> build patrol craft for use by friendly third world country navies.
>
> ...as described in this Michael Bosworth letter:
>http://www.flickr.com/photos/hallman/3943182350/
>
> __
read that article. One immediate impression: This design SACPAS-3
481 is the first PB&F design that I can recall that is specifically
designed and intended to be the maximum boat that can be fit inside a
standard 40 foot shipping container. Nice.
That said, I did a little Google searching and stumbled upon a
description of another PB&F NavSea concept design (which has been
mythical 'under wraps' to most of us for almost a decade until now)
which is the fast heavy equipment carrier, LCU-F. I recall learning
of this concept design during a conversation the Bolger Memorial
weekend, but until now I had seen no pictures. Anyway, WOW! (Imagine
a Folding Schooner, => Insolent60 => Godzilla on steroids!!!)
Look at pages 16 through 19 of this 2009 'pdf' Powerpoint presentation
in this URL link...
http://navalengineers.net/Proceedings/HPMV2009/Presentations/ThomasM.pdf
On Thu, Aug 4, 2011 at 2:38 AM,Susanne@...
<philbolger@...> wrote:
>
>
>
> Indeed, Bruce.
> The current MAIB issue begins a narrative on this project. The last Phil and I discussed. The first design without him. #681 is the beginning of the 'Post-Phil' design numbers. I hope I'll do justice to his legacy with this project.
> Susanne Altenburger, PB&F
>
> P.S. Nothing wrong with 'eccentric'... particularly if the design-work adds to the spectrum of options and thus shifts 'the center'...
>
> ----- Original Message -----
> From: BruceHallman
> To:bolger@yahoogroups.com
> Sent: Wednesday, August 03, 2011 11:07 AM
> Subject: Re: [bolger] Re: Library of Congress?
>
>
> On Wed, Aug 3, 2011 at 4:44 AM,Susanne@...
> <philbolger@...> wrote:
> > And this project is now covered in the current and future issues of MAIB.
>
> This US Navy commission is very exciting, and I am eagerly waiting to
> read about it in MAIB. Keep on hanging it there!
>
> I am guessing this is a prototype SACPAS? "Security Assistance
> Contingency Producible Affordable System", in other words, an easy to
> build patrol craft for use by friendly third world country navies.
>
> ...as described in this Michael Bosworth letter:
>http://www.flickr.com/photos/hallman/3943182350/
>
> __