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THIS is from the official Press Release
By PIB ?
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THIS is from the official Press Release
WOW .... I just have to hand it to you. Your lucid assumptions take precedence over the Press Release by the Indian Navy and the Govt. of India ? .......... Amazing Hubris.
THIS is from the official Press Release and invitation to Major Newspaper in India when Arihant was Unveiled.
INS Arihant: All you want to know about India’s first nuclear-powered submarine - daily.bhaskar.com
Class & type: Arihant-class submarine
Type: SSBN
Length: 111 m (364 ft)[1]
Beam: 15 m (49 ft)[1]
Draft: 11 m (36 ft)[1]
Propulsion: PWR using 40% enriched uranium fuel (80 MWe );[1] one turbine (47,000 hp/70 MW); one shaft; one 7-bladed, high-skew propeller (estimated)
Range: unlimited except by food supplies
Test depth: 300 m (980 ft) (estimated)
Complement: 95–100 officers and men
Sensors and
processing systems: BEL USHUS
Armament: 6 x 533mm torpedoes
12 x Sagarika (missile) SLBM
Or
4 x K-4
WOW .... I just have to hand it to you. Your lucid assumptions take precedence over the Press Release by the Indian Navy and the Govt. of India ? .......... Amazing Hubris.
THIS is from the official Press Release and invitation to Major Newspaper in India when Arihant was Unveiled.
INS Arihant: All you want to know about India’s first nuclear-powered submarine - daily.bhaskar.com
Class & type: Arihant-class submarine
Type: SSBN
Length: 111 m (364 ft)[1]
Beam: 15 m (49 ft)[1]
Draft: 11 m (36 ft)[1]
Propulsion: PWR using 40% enriched uranium fuel (80 MWe );[1] one turbine (47,000 hp/70 MW); one shaft; one 7-bladed, high-skew propeller (estimated)
Range: unlimited except by food supplies
Test depth: 300 m (980 ft) (estimated)
Complement: 95–100 officers and men
Sensors and
processing systems: BEL USHUS
Armament: 6 x 533mm torpedoes
12 x Sagarika (missile) SLBM
Or
4 x K-4
That article looks slip-shod to me. Daily bhaskar.com? Never heard of it.
47000 HP does not equal 70 MW.
Even russians have the humility to accept that they spied out the single crystal technology from UK.
I thought it was just the early alloys at the rolls royce engine factory where they used shoes to pick up filings?
Single crystal tech was known from quite an early stage than one would imagine. Making an efficient manufacturing and QA process was the hard part, the Soviets did eventually gain a solid repertoire for it. But overall their tech is still behind the West by half a generation given their fabrication process methods (but not a real lack of theoretical RnD from what I have seen of their papers), some of which are still relatively archaic and result in noticeably less efficient, lower MTBO engines. Its the main problem when you have lack of funding for the production research side of things.
I am not saying the work by russians was simply a copy but they did get valuable information which have an altogether new dimension to their research for jet engines.
Russian tech basically is at a level where you can say, "it makes things work". It's far from " wow ! we created some technological marvel here"
That article looks slip-shod to me. Daily bhaskar.com? Never heard of it.
47000 HP does not equal 70 MW.
LOL.....WTF. Its the Dainik Bhaskar group, which is the largest print Media group in India.
Dainik Bhaskar is the 11 most widely read newspaper in the world, published in 14 States and in 4 languages. Hindi, Gujarati, Marathi and English.
It does not get any more real than this.
Now consider this,
47,000 Hp translate to 35 KW.
TWO such Steam Turbines translate to 35KW + 35KW = 70 KW.
The earlier Charlie class Submarine India had leased (the first Chakra I) had a similar design and layout. It had Two Steam Turbines delivering power to a single Shaft.
The Victor class with 6000 Ton displacement has the same design. It has Two 31 KHp steam Turbines attached to a single Shaft.
I admire your sensibilities
Even russians have the humility to accept that they spied out the single crystal technology from UK.
LOL.... what about US Humility ? You are far too much obsessed about Indian and Russian Humility
Yah well their article on this is terrible. The PIB source is only for the picture. No info given on where they got the rest of the info from. It looks like they just copied and pasted from somewhere (wiki?) because there is still a legacy source marker "[1]" in the text.
But the sources I have seen all clearly state one turbine, one shaft.
I think we have beaten this issue to death enough, lets wait for more solid numbers to be released. Arihant is still very much a project who's numbers are still hush hush.
What ? That US employed a lot of Nazi era scientists post WW_II ? That is a fact and needs no acceptance or denial !!
When we do that, I will let you know. But for the moment there is clear report that the Indian submarine has Indian Nuclear Reactor made by Indian Scientists and Indian company IN India.
Russians provided consultancy help, the same way UK provided consultancy help to the US build your Aircraft carrier or BAE or RollsRoyce helped you umpteen projects.
All the sources you have seen ALSO mentions 70 KW/47000 HP. ......... so rather than reject it off hand, it is far more sensible to make out what it means.
You are dismissing data just because you cannot decipher it.
What he meant is 70MW translates to 35MW considering 50% efficiency which translates to 47000 hp. His argument is supposedly some power company in india have developed steam turbine with 50% efficiency for commercial power generation so it means in miniaturized nuclear reactors such extrapolations of assumption will hold.
I am not finding any original source from the Indian Navy or Indian govt establishing a 70 MW steam turbine.
All that is officially established is that the reactor is 83 MW.
A steam turbine is definitely not going to output 70MW from a 83MW thermal feed reactor. If you know the basics of turbomachinery in this scale of operation, you would know why. If its the input power for the Steam Turbine, thats the first time I have ever seen something quoted in this fasion...since we are always only interested in how many horses it outputs.
No one quotes the input, just check any other nuclear submarine page on wiki. The MW and HP are simply equivalent power outputs (in different units) of the steam turbine.