U. S. Navy

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mafets

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Re: U. S. Navy
« Responder #750 em: Setembro 23, 2021, 04:21:57 pm »
https://www.cavok.com.br/marinha-dos-eua-atualiza-o-caca-tatico-adversario-f-5n-melhorando-a-seguranca-e-a-prontidao?fbclid=IwAR33IUgu8QeRhUiTmGIJ8J3j5tgH1pB01f-24nRvhnjA-YUBgGlVywhPoA4
Citar
O escritório do programa de Aeronaves Especializadas e Comprovadas da Marinha (PMA-226) recentemente entregou a primeira aeronave F-5N para a Estação Naval de Patuxent River, Maryland, para iniciar o teste de solo e voo do projeto de protótipo de atualização em bloco dos F-5.


Alinhados com o imperativo estratégico da Marinha dos EUA de aumentar a capacidade e aumentar a letalidade, os caças táticos redesenhados incluirão recursos encontrados em aeronaves modernas que melhoram a segurança e a prontidão.



Saudações
"Nunca, no campo dos conflitos humanos, tantos deveram tanto a tão poucos." W.Churchil

http://mimilitary.blogspot.pt/
 
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Re: U. S. Navy
« Responder #751 em: Outubro 01, 2021, 06:23:12 am »
"[Os portugueses são]um povo tão dócil e tão bem amestrado que até merecia estar no Jardim Zoológico"
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Re: U. S. Navy
« Responder #752 em: Outubro 11, 2021, 02:07:24 pm »


Virginia Block III: The Revised Bow

Oct 11, 2021 04:56 UTC by Defense Industry Daily staff

October 11/21: Lead Yard Support General Dynamics won a $482.1 million contract modification external link for lead yard support and development studies and design efforts related to Virginia Class submarines. The Virginia Class new attack submarine is an advanced stealth multimission nuclear-powered submarine for deep ocean anti-submarine warfare and littoral operations. Work will take place in Connecticut, Virginia and Rhode Island. Estimated completion will be by October 2022.

Virginia Block I-II
(click for SuperSize)
“GDEB Receives $148M as Virginia Class Lead Yard” described changes to the Virginia Class submarine’s design that are expected to reach 20% of the $200 million savings goal by the time orders for the versatile sea attack/ land attack/ special forces submarines rise to 2 per year, in 2012.

The bow changes cover the FY 2009-2013 ships, referred to as Block III. SSN 774 Virginia – SSN 777 North Carolina are Block I, and SSNs 778-783 will be Block II. Block III begins with the 11th ship of class, SSN 784. Long lead time component orders began May 22/08, and the submarine is expected to be ready for delivery around 2015. A fuller explanation of Block III’s extensive bow changes, and an accompanying graphic, may be found below – along with contract updates that include additional improvements and sonar development.

The Virginia Class Program: “2 for 4 in 12”

SSN 777 costruction
(click to view full)
The SSN-774 Virginia Class external link submarine was introduced in the 1990s as a Clinton-era reform that was intended to take some of the SSN-21 Seawolf Class’ external link key design and technology advances, and place them in a smaller, less heavily-armed, and less expensive platform. The resulting submarine would have learned some of the Seawolf program’s negative procurement lessons external link, while performing capably in land attack, naval attack, special forces, and shallow water roles. In the end, the Seawolf Class became a technology demonstrator program that was canceled at 3 ships, and the Virginia Class became the naval successor to America’s famed SSN-688 Los Angeles Class.

The Virginia Class program was supposed to reach 2 submarines per year by 2002, removing it from the unusual joint construction approach between General Dynamics Electric Boat and Northrop Grumman Shipbuilding – but that goal has been pushed back to 2012 in progressive planning budgets.

In FY 2005 dollars, SSN-21 submarines cost between $3.1-3.5 billion each. According to Congressional Research Service report #RL32418, and the Navy is working toward a goal of shaving FY05$ 400 million from the cost of each Virginia Class boat, and buying 2 boats in FY2012 for combined cost of $4.0 billion in FY 2005 dollars – a goal referred to as “2 for 4 in 12”. In real dollars subject to inflation, that means about $2.6 billion per sub in 2012, and $2.7 billion in 2013. The Navy believes that moving from the current joint construction arrangement will shave FY05$ 200 million from the cost of each submarine, leaving another FY05$ 200 million (about $220 million) to be saved through ship design and related changes.


Block III: The Changes



The most obvious change is the switch from 12 vertical launch tubes, to 12 missiles in 2 tubes that use technology from the Ohio Class special forces/ strike SSGN program. The Virginia’s hull has a smaller cross-section than the converted ballistic missile SSGNs, so the “6-shooters” will be shorter and a bit wider. Nevertheless, they will share a great deal of common technology, allowing innovations on either platform to be incorporated into the other submarine class during major maintenance milestones. Net savings are about $8 million to program baseline costs.

The other big change you can see in the above diagram is switching from an air-backed sonar sphere to a water-backed Large Aperture Bow (LAB) array. Eliminating the hundreds of SUBSAFE penetrations that help maintain required pressure in the air-backed sonar sphere will save approximately $11 million per hull, and begins with the FY 2012 boats (SSNs 787-788).

The LAB Array has 2 primary components: the passive array, which will provide improved performance, and a medium-frequency active array. It utilizes transducers from the SSN-21 Seawolf Class that are that are designed to last the life of the hull. This is rather par for the course, as the Virginia Class’ was created in the 1990s to incorporate key elements of the $4 billion Seawolf Class submarine technologies into a cheaper boat.

The SUBSAFE eliminations, plus the life-of-the-hull transducers, will help to reduce the submarines’ life cycle costs as well by removing moving parts that require maintenance, eliminating possible points of failure and repair, and removing the need for transducer replacements in drydock.

The bow redesign is not limited to these changes, however, and includes 25 associated redesign efforts. These are estimated to reduce construction costs by another $20 million per hull beginning with the FY 2012 submarine.

With the $19 million ($11 + 8) from the LAB array and Vertical Payload, and the $20 million from the associated changes, General Dynamics is $39 million toward the $200 million baseline costs goal of “2 for 4 in 12”. While the changes themselves will begin with the FY 2009 ship, the savings are targeted at FY 2012 because of the learning curve required as part of the switch. Recent discussions concerning an earlier shift to 2 submarines per year would result in faster production of the Block III submarines, but would be unlikely to make a huge difference to that learning curve.

https://www.defenseindustrydaily.com/virginia-block-iii-the-revised-bow-04159/
"[Os portugueses são]um povo tão dócil e tão bem amestrado que até merecia estar no Jardim Zoológico"
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Re: U. S. Navy
« Responder #753 em: Outubro 11, 2021, 02:48:03 pm »
A Nuclear Engineer and his wife are arrested by the FBI for selling US Navy Submarine Reactor Data to a Foreign Country
By Ryan White -October 10, 2021



According to court documents, a US Navy nuclear engineer and his wife were charged with repeatedly attempting to pass secrets about US nuclear submarines to a foreign government in an alleged espionage scheme found by the FBI.

The investigation began when the FBI obtained a package that had been sent to another country with operational manuals, technical details, and an offer to establish a covert relationship. The package was intercepted in the other country’s mail system and sent to an FBI legal attaché. The package was containing U.S. Navy documents, a letter, and instructions for how to conduct encrypted communications with the person offering the information. The letter in the package said: “Please forward this letter to your military intelligence agency. I believe this information will be of great value to your nation. This is not a hoax.”

The FBI followed the package’s instructions and started an encrypted communication with the sender, who offered Navy secrets in exchange for $100,000 in cryptocurrency. The FBI persuaded the sender to leave information at a dead drop in exchange for cryptocurrency payments through a series of transactions. The FBI arrested Jonathan and Diana Toebbe on October 9, after he placed yet another SD card at a pre-arranged “dead drop” at the second location in West Virginia.

The secret material in question includes plans for submarines that could be beneficial to a variety of countries. Because the reactors are fueled by highly enriched uranium, which can also be converted to bomb fuel for nuclear weapons, nuclear propulsion is one of the most tightly guarded secrets in the US Navy.



The details of the incident according to US Department of Justice as follows:
Jonathan and Diana Toebbe were arrested in Jefferson County, West Virginia by the Federal Bureau of Investigation (FBI) and the Naval Criminal Investigative Service (NCIS) on Saturday, October 9, 2021.  They will have their initial appearances on Tuesday, October 12, 2021, in federal court in Martinsburg, West Virginia.  For almost a year, Jonathan Toebbe, 42, aided by his wife, Diana, 45, sold information known as Restricted Data concerning the design of nuclear-powered warships to a person they believed was a representative of a foreign power.  In actuality, that person was an undercover FBI agent. The Toebbes have been charged in a criminal complaint alleging violations of the Atomic Energy Act.

“The complaint charges a plot to transmit information relating to the design of our nuclear submarines to a foreign nation,” said Attorney General Merrick B. Garland.  “The work of the FBI, Department of Justice prosecutors, the Naval Criminal Investigative Service, and the Department of Energy was critical in thwarting the plot charged in the complaint and taking this first step in bringing the perpetrators to justice.”

Jonathan Toebbe is an employee of the Department of the Navy who served as a nuclear engineer and was assigned to the Naval Nuclear Propulsion Program, also known as Naval Reactors. He held an active national security clearance through the U.S. Department of Defense, giving him access to Restricted Data. Toebbe worked with and had access to information concerning naval nuclear propulsion including information related to military sensitive design elements, operating parameters, and performance characteristics of the reactors for nuclear-powered warships.

The complaint affidavit alleges that on April 1, 2020, Jonathan Toebbe sent a package to a foreign government, listing a return address in Pittsburgh, Pennsylvania, containing a sample of Restricted Data and instructions for establishing a covert relationship to purchase additional Restricted Data. The affidavit also alleges that, thereafter, Toebbe began corresponding via encrypted email with an individual whom he believed to be a representative of the foreign government. The individual was really an undercover FBI agent.  Jonathan Toebbe continued this correspondence for several months, which led to an agreement to sell Restricted Data in exchange for thousands of dollars in cryptocurrency.

On June 8, 2021, the undercover agent sent $10,000 in cryptocurrency to Jonathan Toebbe as “good faith” payment.  Shortly afterwards, on June 26, 2021, Jonathan and Diana Toebbe traveled to a location in West Virginia.  There, with Diana Toebbe acting as a lookout, Jonathan Toebbe placed an SD card concealed within half a peanut butter sandwich at a pre-arranged “dead drop” location.  After retrieving the SD card, the undercover agent sent Jonathan Toebbe a $20,000 cryptocurrency payment.  In return, Jonathan Toebbe emailed the undercover agent a decryption key for the SD Card.  A review of the SD card revealed that it contained Restricted Data related to submarine nuclear reactors.  On August 28, 2021, Jonathan Toebbe made another “dead drop” of an SD card in eastern Virginia, this time concealing the card in a chewing gum package.  After making a payment to Toebbe of $70,000 in cryptocurrency, the FBI received a decryption key for the card.  It, too, contained Restricted Data related to submarine nuclear reactors.  The FBI arrested Jonathan and Diana Toebbe on October 9, after he placed yet another SD card at a pre-arranged “dead drop” at a second location in West Virginia.

https://navalpost.com/us-navy-submarine-reactor-espionage/
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Re: U. S. Navy
« Responder #754 em: Outubro 20, 2021, 03:26:45 pm »
"[Os portugueses são]um povo tão dócil e tão bem amestrado que até merecia estar no Jardim Zoológico"
-Dom Januário Torgal Ferreira, Bispo das Forças Armadas
 

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Re: U. S. Navy
« Responder #755 em: Outubro 20, 2021, 04:32:19 pm »
Não é parte na US Navy. Existem dois serviços militares praticamente desconhecidos que utilizam o RDM lá do sítio e são compostos unicamente por oficiais, cujos postos e uniformes são idênticos aos da US Navy. A saber:
— United States Public Health Service Commissioned Corps.
— National Oceanic and Atmospheric Administration Commissioned Officer Corps
Talent de ne rien faire