Tag Archives | Submarines

China’s Supersonic Supercavitation Submarine

Do you know what supercavitation technology is? Nor me, but it’s what the Chinese plan on using to create a submarine (or torpedo) that could travel from Shanghai to San Francisco in 100 minutes, reports the South China Morning Post:

China has moved a step closer to creating a supersonic submarine that could travel from Shanghai to San Francisco in less than two hours.

New technology developed by a team of scientists at Harbin Institute of Technology’s Complex Flow and Heat Transfer Lab has made it easier for a submarine, or torpedo, to travel at extremely high speeds underwater.

Superkavitation schema.svg

“Superkavitation schema” by Booyabazooka. CC BY-SA 3.0 via Wikimedia Commons.

 

Li Fengchen, professor of fluid machinery and engineering, said the team’s innovative approach meant they could now create the complicated air “bubble” required for rapid underwater travel. “We are very excited by its potential,” he said.

Water produces more friction, or drag, on an object than air, which means conventional submarines cannot travel as fast as an aircraft.

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US, UK Nuclear Submarine Secrets Accidentally Published Online

Los Angeles Class SubmarineThe original is no longer available, but the redacted PDF is here. Via Yahoo News:

A “technical error” has caused Britain’s Ministry of Defense to inadvertently publish classified sections of a report containing sensitive information about US Navy and British military nuclear submarines, the BBC reports.

Sensitive information in the report, which was published to Parliament’s website after a Freedom of Information request by anti-nuclear campaigners, includes how much structural damage British subs can take before a full meltdown takes place, as well as US vessels’ abilities to handle nuclear core failure.

The “schoolboy error,” as the MoD has called it, was due to improper redaction in the PDF document. As British tabloid the Daily Star Sunday, which first reported the gargantuan slip-up, points out, “anyone wanting to read the censored sections just had to copy the text.” This was most likely because whomever attempted to redact the document did so with the digital black highlighter, which simply covers up, rather than fully redacts, the text in a PDF.

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The Game-Changing Colombian Narco-Sub

Chris Kraul reports from Bogota, Colombia, for the Los Angeles Times:
Police in Ecuador seized a 100-foot submarine being built by suspected drug traffickers capable of carrying a crew of six and 10 tons of cocaine on underwater voyages lasting up to 10 days — a "game changer" for U.S. anti-drug and border security efforts, officials said Monday.
A raid Friday by 120 police officers and soldiers netted the fiberglass sub as it was nearing completion in a clandestine "industrial complex"...
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