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Northrup Grumman Christens RC submarine - news from Seawaves magazine

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Postby TMSmalley » Wed Dec 03, 2003 10:46 am

(Steve Reichmuth has posted a nice big photo of this sub in his post below. Thanks Steve! TS)

N-G Christens RC Submarine Model

(photo cut lines) Northrop Grumman Newport News employees are pictured standing behind NNemo 1, a scaled, radio-controlled submarine model that was designed by Newport News. From left: Walt Floyd, manager, Submarine Technology; Gail Calhoun-Bell, administrative secretary, Submarine Technology; Irwin Edenzon, vice president, Business & Technology Development; Charlie Butler, director, Submarine Engineering; Chris Vitarelli, program director for Virginia-class Construction and Advanced Submarine Programs.

Gail Calhoun-Bell, administrative secretary for Submarine Technology at Northrop Grumman Newport News and sponsor of the Newport News Experimental Model 1, breaks a bottle on the submarine model and christens it NNemo 1.

(Actual story) Newport News VA December 2, 2003 - Northrop Grumman Corporation's Newport News sector held a christening ceremony on Nov. 19 for its submarine model concept called Newport News Experimental Model 1 (NNemo 1). NNemo 1 is a scaled, radio-controlled model of Newport News' advanced hull-form concept submarine design. Testing of NNemo 1 will take place in December, and the data gathered will help predict full-scale ship performance in making turns, verifying dynamic stability and allowing the development of emergency recovery procedures.

The Newport News sector designed NNemo 1 through independent research and development. The design is based on innovative pressure-hull technologies, structural materials and electric propulsion systems developed at Newport News to operate and maneuver the submarine in shallower water. The Naval Surface Warfare Center -- Carderock Division provided general design guidance.

"What we learn from this project will help us design future generation submarines that will be safe for the crew while remaining highly effective, warfighting platforms," said Walt Floyd, manager, Submarine Technology, Northrop Grumman Newport News. "We're looking forward to NNemo's journey and the contributions it will provide to the future of submarine warfare."

NNemo 1 was built by Sias-Patterson, Inc., a small business in Yorktown, Va., devoted to the design and manufacture of commercial off-the-shelf Autonomous Underwater Vehicles. Northrop Grumman's Electronic Systems and Integrated Systems sectors also contributed to the project. Integrated Systems provided the navigation unit and Electronic Systems provided assistance with the propellers.

I provide a link below to the S-P website. Their sub does what Rick Galinson was working on with his "visible sub" at The SubRegatta this year.
Sias Patterson website - REALLY COOL RC/autonomous sub for "Harbor Security & mine detection"
This is a shot of Sias-Patterson's "Fetch" AUV. Go to their website for more info.

Edited By TMSmalley on 1070540857
Tim Smalley
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Postby Art Broder » Wed Dec 03, 2003 11:43 am

See similar, but smaller, "Remus" autonomous submersible from Woods Hole Oceanographic Institution, Massachusetts.Art Broder's Models
Click on Remus picture to enlarge.
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Postby Dolphin » Thu Dec 04, 2003 3:14 am

Thank you Tim,

Seeing more of these what appears to be capable littoral shallow water designs lately. Seen a similar shaped French concept on the net too.

I like seeing an X-stern. Finally an X-stern on a proposed American design for a change! Perfect for shallow water. The whole submarine design community is exploring bold new directions much like the American aeronautical community has at least as far as new hydrodynamic hull shapes. Because of the absence of Rickover? I believe Rickover's absence of presence can be seen as early as in the New 'Virginia' actually. The Virginia is supposed to employ a single 'stick' helm concept among many things. In fairness to Rickover, if his strict design protocols and safety could be satisfied with the latest technology demonstrated, he might have conceded perhaps? When EB took the Albacore design and combined it with nuclear propulsion in what we know as the Skipjack SSN's, what a leaping advancement that was! Rickover believed strongly in twin screws for redundant safety, despite it's hydrodynamic inefficiencies over single screw vessels. EB showed him the data to back it up and convinced him a larger single screw was the way to go. The rest is history.

If submarines keep coming out with these new shapes, we will have to kiss our wood lathes good by! It would be a refreshing change perhaps?

Steve Reichmuth


Postby expfcwintergreen » Thu Dec 04, 2003 4:08 am

Do my eyes deceive me, or are those props turning in the opposite direction than is typical for US boats? Normal rotation direction for multi-screws is "outboard-over-the-top" when viewed from astern. These appear to be turning inboard. Interesting departure from tradition, wonder why ...



Postby expfcwintergreen » Thu Dec 04, 2003 10:56 pm

Yep... It's an X-Tail. The angle might be deceiving.

Another thing to note is no dunce caps on the props. I suspect these screws are just display only. If this is the new test mule, these will be swapped out with a couple variants of whatever David Taylor and associates have cooked up next.

Although this is obviously much cheaper than a 1/4 scale model, the problems associated with scaling up some of this hardware to 1:1 may be more difficult.

Assuming we won't be seeing new pumpjets in the near future.

IMHO of course...


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