Bharat Rakshak

vsunder

The two arms of the Pune-Mumbai Expressway Missing link project are finally connected, so someone can walk across from the Mumbai to Pune end. Concrete has to be poured into the final deck slab piece and tensioning of the final cables has to be done. After that are finishing works, crash barriers, f...

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The current war shows how Israelis are exploiting the IRGC Sarallah unit tactics for internal security. The Sarallah is the IRGC tactics to enforce action on what it perceives as internal dissent esp. in the Tehran area. These tactics by the Israelis have been honed in the war in Gaza. Typically as ...

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One of the great surprises of the war is the use of old aircraft, 70 year old B 52s and the A-10 Warthog that was due for retirement but now prolonged to 2029. Warthogs are flying out of Muwaffaq Salti airbase in Jordan. This airbase has been refurbished earlier by CENTCOM around 2019. The F-22s and...

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The bench in Iran is very thin now. The prime target is Ahmad Vahidi who is leading the war effort and was implicated in the 1994 bombing of the synagogue and Israeli embassy in Buenos Aires, Argentina. Vahidi headed the Quds force and also the IRGC and he is the last of those people who had relatio...

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There were reports that the US was upset with IDF hitting oil storage tanks around Tehran. There are two reasons for this. First the plumes of oily black smoke contains a lot of particulate matter. This gets sucked into high performance jet engines. FADEC does adjust very quickly in milliseconds to ...

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Sorry to hear this, he was a strong voice on Times Now for such a long time all things military, especially on Arnab's shows. I remember being disappointed when he didn't move to Republic when it was started. Any idea what happened? He was not that old, and this news came all of a sudden. RIP. Maro...

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Finally after a decade, Bangalore is connected to Mumbai by a double line fully electrified. CRS took place two days ago on the last remaining single line section on the Bangalore to Mumbai route from Makkajipalli to Dharmavaram 30km. CRS has sanctioned a speed of 110km on this section in SWR terri...

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Finally after a decade, Bangalore is connected to Mumbai by a double line fully electrified. CRS took place two days ago on the last remaining single line section on the Bangalore to Mumbai route from Makkajipalli to Dharmavaram 30km. CRS has sanctioned a speed of 110km on this section in SWR territ...

vsunder

To be more elaborate: After Manali one goes through the Rohtang/Atal tunnel now and avoids the high Rohtang pass. Past this, there are three more high mountain passes that close in the winter on the road to Leh. Instead at Darcha in HP, one will bifurcate and go on the new NPD axis(Nimmu--Padum--Dar...

vsunder

vsunderji, Is the slight jerk and swing we see in VB trains due to the track alignment and curvature? Will it go away with concrete slabs? Yes. The method of laying rails on IR is by manual means. This creates inaccurate track geometry. Distance between sleepers/railroad ties need not be a constant...

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^^^ The Shinku La or Shingo La tunnel will be superseded by another road tunnel at an even higher altitude. Currently the road to DBO(Daulat Beg Oldi) is the DS-DBO road, Darbuk-Shyok-DBO road on which the new Shyok tunnel (see above) 920m was opened in December 2025. This road is too close to the M...

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I also said that Mumbai has an OCC for its suburban network and this has been extended on WR to Surat Does'nt Chennai also have a OCC for its suburban network? My understanding is that it is based at Arakkonam (AJJ). Remember reading somewhere that, Madras Suburban train system is also now on compl...

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Since some of you are asking me about Operational Control Centers on Indian Railways, DFCs have two already as I explained, I also said that Mumbai has an OCC for its suburban network and this has been extended on WR to Surat. It turns out that Rajendra Aklekar a journalist who specializes on rail r...

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CRS has just taken place on the Murkongselek to Pasighat new railway line 26km in Arunachal Pradesh from Murkongselek to Sille 15km with an authorized speed of 110kmph. https://assamtribune.com/assam/murkongselekpasighat-rail-project-advances-as-crs-clears-157-km-stretch-1608197 https://www.youtube....

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Vsunder et al., what steps would be taken to prevent VBIED attacks in these critical tunnels? I assume the impact of such an attack would be catastrophic. Is the plan to physically inspect every civilian vehicle before it passes through? Would those delays essentially negate the benefit of reduced ...

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Yes an entrenched union that refuses reform is part of the issue. Lack of trained operators another. A hidebound railway board another. On average proposals take 37 months to be acted on and then the tendering system is another hurdle. Mumbai to Surat is now under an OCC with Kavach integrated into ...

vsunder

^^^ Indian Railways has nothing comparable to what the DFCs have: a centralized OCC, Operational Control Center, except for two. A centralized control center at Tundla that controls 43 stations and 9 major yards on the 423 km Kanpur to Ghaziabad section on the Howrah Delhi line and a Centralized con...

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Notice too automatic signalling on WDFC with signals every 2 km apart so that many 1500m rakes can be put. WDFC has done away with absolute block signalling like IR which is natural, stations on WDFC are 40km apart and it is silly to have absolute blocks with such great distances between stations. ...

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An inspection was conducted on the Up line from Vaitarna to JNPT on the WDFC by an inspection car. The down line is still seen incomplete at places like the Kalamboli rail flyover where the WDFC goes over the CR tracks. The downline girder of 91m was launched over a traffic and power break over Jan ...

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Latest update on the Zoji La tunnel. See also ^^^ A video posted by the Tribune newspaper which is a day old, states as per MEIL (prime contractors for the tunnel) project managers interviewed for the video that now 700-750m is left for breakthrough for the 13.1 km tunnel. Tunneling is being carrie...

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@Morem: Thanks. The WDFC has been plagued by shifting deadlines all because of poor project management by Tata Constructions, jack of all trades. Its one reason they should be banned from building planes. They could not allocate resources to build Jewar airport, build the new Parliament building and...

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This month the new Saraighat bridge across the Brahmaputra at Guwahati a 4 lane bridge is due to be inaugurated. Prior to 1963and esp. during the 1962 war there was no good bridge across the Brahmaputra making logistics very difficult. In June 1963, the old Saraighat bridge was inaugurated by Nehru....

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All of this reminds me of the story of the boy who cried wolf. In the "bad old days" when the Railway budget was a separate feature, in 2016 yes in the Mudi era, Suresh Prabhu presented the Railway budget and said the EDFC and WDFC would be done by 2019 and then presented plans for the Eas...

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The 13.1 km long Zoji La tunnel is nearing a breakthrough with 925m left to tunnel from the Kargil end. Tunneling is done from the Sonamarg/Kashmir end. MEIL is the principal tunneling contractor. Breakthrough is expected by late April or early May providing all weather connectivity with Kargil and ...

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Though eloco trial took place between Saklespur and Subramanya Rd on Dec 28, actual elocos hauling freight and passenger has not started. The TSS(traction substation) at Saklespur is possibly just ready and several drains trackside have to be finished which prove crucial during the monsoons and ther...

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with electrification and WAP 7 onwards locomotives what speeds can the trains acheive with the present BG rails?? I saw a video of full electrification of tracks from Sakaleshpura to Subramnaya Road and the person saying that journey from Bengaluru to Mangaluru to be around 4hrs with electric locos...

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What's the purpose of the Siemens D9 deal ? Ir already has the WAG 12Bs that are higher power tho they have traction issues due to their BoBo config. But they also have a 12000hp WAG11 that doesn't have that problem, so why such an extensive fleet of 9000hp D9s as well ? Replacement of the WAG7s an...

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^^^ The information posted by the poster Rajkumar is incorrect. Track linking is by no means complete on WDFC. The Kundevahal tunnel very near JNPT and in fact between Panvel and JNPT had a breakthrough March 28, 2025. It was the last of the 3 tunnels on the 102 km Vaitarna to JNPT section which had...

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Regarding the Sevok-Rangpo line to Sikkim, one novelty of this 44km line is that 39km will be tunnels. The second novelty is that the entire track will be ballastless like a Metro track built on a concrete foundation. Rahee Infra is the contractor awarded the task of building the ballastless track. ...

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India has developed a rail based canisterized launch system. This is Agni Prime IRBM. The launch system has a pole that rises and pushes the OHE wires aside to clear a path for the missile launch. The FSU had an extensive rail based missile network.

https://www.youtube.com/watch?v=QPDUYfRUHB4

vsunder

Now that the line to Mizoram(Aizawl) is open and both freight and passenger services started from Sairang/Aizawl to Bairabi and on to Delhi(Rajdhani), Kolkata and Guwahati, here is a summary I have prepared on the remaining lines under construction in NE India. Some Problems in Constructing Remainin...

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^^^ No idea what happened. They wanted it to haul premier trains, Shatabdi, Duronto and Rajdhani. In fact the news of this dates from 2019. Maybe implementation of VB type traction may have given pause to IR, going the train set route in the future.

vsunder

Just when I thought that FINALLY Tata Projects had gotten their act together on the much delayed 102km WDFC section from Vaitarna to JNPT, disaster has again struck, with poor project management. I am not sure what ails this Tata Company. 14 pillars of a ramp connecting WDFC to IR at Kharbao where t...

vsunder

xposting from the Econ thread: Does anyone know why the GDP data (Annexure B ) shows a 1.1% growth in rail freight net tonne-km in 2023-24 and a -0.01% in 2024-25 ? How much is this figure dependent on coal movement and to why extent do or don't the DFCs help here ? Non coal freight has been stagna...

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Gulermak is a Turkish construction company with a large footprint in India in the Metro tunneling business. I was wondering why there was no oversight on them as soon as Sindoor started and in fact remarked to several that there will be an issue. Now comes this news that the Gulermak officials have ...

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My earliest memory of war is the Liberation of Goa 1961. After that I remember all wars in great detail. I remember listening to Nehru on the radio in his broadcast to the nation in 1962 essentially saying Assam is lost with the fall of Tezpur imminent. The 1965 and 1971 wars are full of memories an...

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There is a fine story about Chaklala airfield from 1971. Brigadier General Chuck Yeager is a very famous cult figure of the US Air Force. He broke the sound barrier and every fighter pilot in the US aspired to be like him. They even made a famous movie about him based on a book by Tom Wolfe. https:/...

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Nur Khan airbase destroyed video https://x.com/i/status/1921025561624805804 https://pbs.twimg.com/media/GqvUalrakAApuge?format=jpg&name=small First video is Rahim Yar Khan I think not Nur Khan. Chaklala as I have called it since 1960 or Nur Khan as it is known today after AM Nur Khan, is in a v...

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Operation Sindoor is unique in the sense it has been prosecuted with a CDS in charge to advise the political establishment for the first time in the history of modern India. How did this work out? Furthermore there was already a process of transitioning to theater commands. There was a Western theat...

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Here is the published version of the paper in Inventiones Mathematicae on the resolution of the Nusselt number conjecture at high Prandtl values. Springer Verlag has made a tweet about the paper on X and also on Facebook. Here: https://www.facebook.com/SpringerMath/posts/-recently-accepted-by-invent...

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