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PostPosted: Mon Dec 25, 2017 10:16 am 
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Francis Urquhart wrote:
KDahm wrote:
Is this also affecting other MT30 installations, or is it unique to the configuration of the LCS version. Wouldn't be the first time that the DOD has taken a reliable system and made it into dog poo.


At the moment, the LCS installation is the only in-service MT-30 power train that has been thoroughly wrung out in service conditions. The LCS installation is also cramped and a diesel hybrid, neither of which is promising. The worrying point is that the RN is dependent on the MT-30 for its future fleet (and, having made a right mess of the WR-21 installation on the Type 45, hasn't got much in the way of options). In a year's time we should know whether the MT-30 issues are unique to LCS or a sign of a more general problem.

I have some questions concerning the MT-30 for which there may not yet be enough operational experience to definitively answer. But here goes:

-- In commercial jet aircraft, substituting two larger jet engines for four smaller ones has produced measurable cost benefits with no reduction in overall safety and reliability. Is there a similar benefit for using two MT-30's as opposed to four LM-2500's?

-- For propulsion plants that are all electric and which employ multiple types of power sources fed into a common onboard power distribution and control network, is it the turbine/gensets themselves that have exhibited the most serious problems, or is the switchgear (etc. etc.) of the power distribution network and the propulsion drive motors that are experiencing the most serious problems?

-- Are the MT-30's turbine/genset combinations being used aboard the DDG-1000's performing more reliably than those used aboard the LCS? (I'm referring here to the engine/gensets themselves.) What about the DDG-1000's all electric IPS propulsion system taken as a whole?

-- Has there been any kind of analysis done in directly comparing the performance of the LCS propulsion arrangement to the DDG-1000 propulsion arrangement to see if there are common issues and problems that each arrangement experiences, and to determine what kinds of design configuration differences produce positive or negative impacts on the overall reliability of their propulsion systems, taken as a whole?

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PostPosted: Thu Jan 11, 2018 1:08 pm 
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Apparently "icebreaker" is not one of the LCS roles - she made Montréal a couple weeks ago and she's still there, icebound. Guess we need an icebreaker mission module!

https://mobile.twitter.com/USSLittleRoc ... 2735371265

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PostPosted: Fri Jan 19, 2018 7:48 pm 
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Aaaand she's officially stuck.
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USS Little Rock Stuck in Montreal, Ship Might Not Leave Until Spring
By: Ben Werner
January 19, 2018 7:40 PM

The crew of USS Little Rock (LCS-9) man the rails during the ship’s commissioning ceremony Dec. 16, 2017 in Buffalo, N.Y. US Navy Photo

USS Little Rock (LCS-9), the latest Freedom-variant littoral combat ship to join the fleet, is iced in on the St. Lawrence Seaway in Montreal and doesn’t plan to move until the Spring thaw.


“Significant weather conditions prevented the ship from departing Montreal earlier this month and icy conditions continue to intensify,” a Navy spokesperson told USNI News.
“The temperatures in Montreal and throughout the transit area have been colder than normal, and included near-record low temperatures, which created significant and historical conditions in the late December, early January timeframe.”

A sustained blast of Arctic air that extended from late December into January caused ice to form faster than normal within in the Seaway, according to the St. Lawrence Seaway Management Corp., the agency established by the Canadian government to manage the Seaway. The Seaway closed for the season on January 11. Typically, the Seaway is open between March and December.

Little Rock was commissioned on Dec. 16 in Buffalo, next to the decommissioned USS Little Rock (CG-4), the World War II-era Cleveland-class light cruiser that was converted to a guided-missile destroyer. The region received significant snow accumulation during the week leading up the ceremony, and crew members had to clear several inches of snow off the ship before the ceremony.

After the ceremony, Little Rock was to depart Buffalo, transit the Seaway to reach the Atlantic Ocean, and continue to Mayport, Fla. Now Little Rock will remain in Montreal until the ice clears, likely in March.

“While in port, the crew of Little Rock will continue to focus on training, readiness and certifications,” a Navy spokesperson told USNI News.

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PostPosted: Fri Jan 19, 2018 8:35 pm 
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“The temperatures in Montreal and throughout the transit area have been colder than normal, and included near-record low temperatures, which created significant and historical conditions in the late December, early January timeframe.”

But that can't be happening, because climate change!

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PostPosted: Fri Jan 19, 2018 9:33 pm 
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By the time she leaves the Québécois will have renamed her Petite Roche. :lol:

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