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France Won Australia's Contract to Build Submarines

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发表于 4-27-2016 15:55:56 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
本帖最后由 choi 于 4-27-2016 17:20 编辑

On Apr 26 EDT (Apr 25 in Australia) Australia awarded US$40 billion to build and maintain 12 new submarines inside Australia, plus complete technology transfer. Germany and Japan lost the bid.

Note:
(a) Australia's Future Submarines. DCNS, undated
http://dcnsgroup.com.au/what-we-do/sea-1000/
(full name: Shortfin Barracuda Block 1A; stern planes; Pump jet propulsion means the Shortfin Barracuda can move more quietly than submarines with obsolete propeller technology

video clip: "Pump Jet Propulsion[:] Replaces obsolete propeller technology * * * Hydroplanes can retract to reduce drag and noise
(b) DCNS (company)
https://en.wikipedia.org/wiki/DCNS_(company)
(founded in 1631 during the reign of Louis XIII; the company name "became DCN ('Direction des Constructions Navales' [Google translate: 'Directorate of Naval Construction') in 1991 and DCNS since 2007")

The fr.wn.wikipedia.org explains: "le « S » ajouté pour la notion de système et de service."

my translation: The "S" added [is] for the notion of the system and the service.
(c) French Barracuda-class submarine
https://en.wikipedia.org/wiki/French_Barracuda-class_submarine
(a new nuclear attack submarine, designed by the French shipbuilder DCNS for the French Navy; Construction began in 2007 and the first unit will be commissioned in 2017; table [for both nuclear and conventionally powered]: 1 pump jet, X-shaped [as opposed to cross-shaped]; section 4 Shortfin Barracuda conventional variant)

"Shortfin" is a trademark; in real life the fish barracuda does not have a shortfin variant.

(d) barracuda the fish
(i) barracuda
https://en.wikipedia.org/wiki/Barracuda
(a saltwater fish)
(ii) barracuda (n; American Spanish; First Known Use 1678)
www.merriam-webster.com/dictionary/Barracuda
(pronunciation)

(e) pump-jet
https://en.wikipedia.org/wiki/Pump-jet
(The mechanical arrangement may be a ducted propeller with nozzle, or a centrifugal pump and nozzle; section 5 Advantages: Among other things: "Noise reduction, resulting in a low sonar signature; this particular system has little in common with other pump-jet propulsors and is also known as "shrouded propeller configuration"; applications: Submarines, for example the Royal Navy Trafalgar class and Astute class, the US Navy Seawolf class and Virginia class, the French Navy Triomphant class and Barracuda class, and the Russian Navy Borei class")
(i) Go to images.google.com and search (Virginia class "pump jet"). You will ducted propeller (propeller housed in a duct), and covered ("shrouded") to leave just a small hole to shoot water jet.
(ii) Norman Polmar and Kenneth J Moore, Cold War Submarines; The design and construction of US and Soviet submarines. Dulles, VA: Potomac Books, Inc, 2004, at page __
https://books.google.com/books?i ... 20jet%22%20%22world
(Chapter 19 Fourth-Generation Submarines contained footnote 11: "HMS Churchill, commissioned in 1970, was the world's first operational submarine to have a pum-jet propulsion system")

(f) diving plane
https://en.wikipedia.org/wiki/Diving_plane
(also known as hydroplane)
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