Posted on 12/18/2023 7:42:23 PM PST by texas booster
A solemn ceremony was held for the K-564 Yasen-M class multi-purpose submarine at the Sevmash shipyard in the north Russian city of Severodvinsk on November 29.
The Arkhangelsk was rolled out of the construction hall into a launch dock in a ceremony attended by Russian Navy Commander, Admiral Nikolai Yevmenov. A bottle of champagne was smashed on the hull by the submarine’s commander, Captain Aleksandr Gladkov.
Launching new submarines near the end of the year follows a long tradition back to Soviet days, as fulfilling annual plans ranks higher than assuring quality checks.
K-564 will now be floated out on the water and state tests can start. Navigation, diving and communication systems are to be examined. So are the launching tubes for torpedos and cruise missiles on board the highly potent submarine.
“The weapons systems of these vessels are significantly superior to their foreign counterparts in a number of their characteristics,” Admiral Yevmenov stated in his speech.
The Yasen-M class can carry Kalibr cruise missiles, but more important for the navy is arming these new submarines with the Tsirkon hypersonic cruise missiles, a weapon key for Russia in the ongoing naval arms race with NATO.
Head of the United Ship-Building Corporation, Aleksei Rakhmanov, in August told state-controlled news agency RIA Novosti that the Yasen-M class subs will be armed with the Tsirkon missiles.
“Work in this direction is already underway,” Rakhmanov said.
A Tsirkon was first time tested from the Yasen-class submarine Severodvinsk in October 2021, from a submerged position at a depth of 40 meters.
The scramjet maneuvering wing anti-ship cruise missile is said to be capable of accelerating up to Mach 9 (nine times the speed of sound) and has a range of up to 1,000 kilometers. That means a launch from inside Russia’s bastion defense area in the Barents Sea can reach enemy warships practically anywhere in the part of the Norwegian Sea north of the Arctic Circle.
The Tsirkon missile is already deployed on the Northern Fleet’s new frigate of the Gorskhov class frequently sailing the Barents Sea and North Atlantic outside the Scandinavian Peninsula.
Sailing undetected, the Yasen-M class submarines are likely capable of posing a serious threat to military bases, naval convoys, and onshore critical infrastructure during an escalating crisis.
K-564 Arkhangelsk will be based at the Nerpitcha piers at the submarine base in Zapadnaya Litsa, a short 60 kilometers from the border to NATO country Norway. Two other Yasen-class vessels, Severodvinsk and Kazan are already sailing out from the same base.
Last week, the Barents Observer reported about Russia’s decision to add three more Yasen-M class submarines to its construction plans, bringing the total fleet up to 12 vessels. Six will sail with the Northern Fleet and six will be based with the Pacific Fleet.
The State Duma, the lower house of Russia’s parliament, on Friday approved the 2024 budget with a strong emphasis on the country’s war economy.
Overall spending is expected to reach 37 trillion rubles (about €380 billion) an increase of around 25% from 2023. Almost a third of this, 10,8 trillion rubles is earmarked for defense- and security structures. The increase year-by-year is 68% and 2023 already had a doubling compared with the year before the full-scale invasion of Ukraine.
Russia has never spent a higher share of its economy on the military since the breakup of the Soviet Union.
The Barents Observer has previously reported that construction at Sevmash yard on the shores of the White Sea has reached a post-Soviet peak.
You raise a good point.
It was irresponsible then, and similar transactions with Communist China are irresponsible now.
yup, that was just wrong on a couple levels...
don’t remember now if they ever got their peepee wacked or not
From the photo it looks like an unshrouded, eight-bladed prop.
WWG1WGA
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
Sadly Capitalists and Free Market players (American or not) don't recognize the power of the Free Market:
"NO! We won't sell that to you until your Nation's Market resembles the Capitalist Free Market System."
That was Reagan's secret weapon that achieved peace without killing, the Economy that could supply ALL the needs of every part of America including the Military.
Communists couldn't match it ever, because they didn't have two ingredients: Freedom and Free Market.
Yup. As was said on the propeller page, the problem with that wasn’t that it enabled the Russians to make quieter props period - they already had the science behind it - but to make them in volume with the required quality control.
Toshiba got pretty roughly handled as a result of that. They lost a *lot* of ground in Japan and are still feeling repercussions today:
https://en.wikipedia.org/wiki/Toshiba%E2%80%93Kongsberg_scandal
Assuming the same power input and equivalent levels of development/manufacture, yes. At higher RPM an open screw is more power efficient than a pumpjet as there’s a sort of “stall” effect in flow at the area between the blade tips and the shroud. It’s why you don’t see the airborne version of the concept on anything bigger than a small drone.
That’s generally not a thing on ships...
It’s worth noting that as commercial computer fluid flow modeling has gotten better and more accessible, there’s also been a huge demand to make quieter props/screws/fans from an area that isn’t so traditional.
Turns out that as electronics have proliferated, people have gotten more and more annoyed by cooling fan noise. Billions of dollars have gone into designing fans that are as close to silent as possible while still moving huge amounts of air. The experience and science behind that is readily available and can directly contribute to quieter in-water screws.
Here’s one example of a silent cooling fan, readily available on the market. Obviously moving air is a little different than moving water, but note the details of the fan - I selected a translucent unit so you could better see the blades. The strakes are not there for style.
https://www.amazon.com/Cougar-CFD12HBG-120mm-Cooling-Green/dp/B00DP5ZCS2?th=1
I was mostly unaware of the fallout of Toshiba's actions.
It appears that, after investigation, the serious punishment was administered by Japan, while the US properly administered trade and financial sanctions.
On noise: I'm certain some noise unnecessarily uses energy, thus an irritating inefficiency. Design of a quieter fan shape should save energy.
Ideally changing air molecule vibration to uni directional pulses and smoothing pulses toward a steady flow. Less noise, more airflow.
From 1980 to 1990 I was working with Automotive Radial Outflow Superchargers, and the impeller designs for them. I see some similar shapes in these cooling fans, even though they are axial.
It's true they are not designed for style, however they are things of beauty.
“That’s generally not a thing on ships...”
Except that it is.
thx, that was my question
laminar flow off the blade hitting the shroud?
lotta vanes on the blades
i guess a Dyson fan is out of the question... 8^)
it was a real mess, Toshiba plant here took sh!t about it and they made vacuum interrupters...
The Dyson fans actually do have a hidden fan in the base.
See “generally” - also, the variable pitch prop has only really been a successful product on extremely large freighters and tankers. But even those have started going to azipods instead.
Other than a few prototypes, the variable pitch screw has never been used on any production class of warship.
It’s related to that, but there’s also massive drag induced.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.