Search found 682 matches

by csaurabh
29 Mar 2025 18:12
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

Panel pulls up space department for shelving fibre project Nearly 20 years after the Vikram Sarabhai Space Centre (VSSC) signed an agreement with the National Aerospace Laboratories (NAL) to develop T800 - a high-strength carbon fibre for space launch vehicles - a parliamentary committee has critic...
by csaurabh
03 Mar 2025 12:18
Forum: Military Issues & History Forum
Topic: Kaveri & Aero-Engine: News & Discussion
Replies: 7059
Views: 3099760

Re: Kaveri & Aero-Engine: News & Discussion

My take on T/W. I have asked these questions few time. Hopefully Maitya sir or someone will answer. T/W ratio is not really impacting overall weight as such. As you point out, LCA carries 4000 kg of weight. It can easily sacrifice 230 kg, If that means it can carry an indigenous engine. Anyway, wha...
by csaurabh
28 Feb 2025 19:04
Forum: Military Issues & History Forum
Topic: Kaveri & Aero-Engine: News & Discussion
Replies: 7059
Views: 3099760

Re: Kaveri & Aero-Engine: News & Discussion

https://x.com/shreedharsingh9/status/1893237701106696339 ---> GTRE is working on improving the thrust-to-weight ratio of the Kaveri engine. Now the T/W ratio is 6.5, it should be 8. To improve the power-to-weight ratio the internal temperature of the turbine must be high. GTRE is working with DRML ...
by csaurabh
09 Feb 2025 15:03
Forum: Military Expositions Archive
Topic: Aero India 2025: 10 - 14 February 2025
Replies: 69
Views: 74947

Re: Aero India 2025: 10 - 14 February 2025

This year appears to be exceptionally bad planning. They are saying at the gate that they are not giving any passes, and the passes can be got online only. And the website registration is broken for the last few days, it says payment failed ( no matter which payment method is used ) Don't know if I ...
by csaurabh
13 Jan 2025 18:42
Forum: Military Issues & History Forum
Topic: India's R&D in Defence DRDO, PSUs and Private Sector
Replies: 5343
Views: 2086411

Re: India's R&D in Defence DRDO, PSUs and Private Sector

Well, let's be a little realistic here.. All bureaucrats get paid on time at the end of the month. They have no incentive to push papers. In fact, pushing papers is highly suspicious, as people will think they have something to gain by it. In government offices, everyone is watching each other. They...
by csaurabh
13 Jan 2025 14:54
Forum: Military Issues & History Forum
Topic: India's R&D in Defence DRDO, PSUs and Private Sector
Replies: 5343
Views: 2086411

Re: India's R&D in Defence DRDO, PSUs and Private Sector

Def Secy stating that we can't absorb funds is the fib of the century unless he was referring to small MSMEs getting sudden orders from AF. Fact is L&T, Tata, DPSUs would live mass orders, and we are short of R&D funds. To state otherwise is to ignore the reality as it exists where ATAGS ha...
by csaurabh
06 Jan 2025 18:39
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

I was hearing a lot on how miniaturization will make all but the manned or interplanetary planetary missions less reliant on development of bigger rockets, is that no longer the case? Number 2, even if reusability of first stage plays a key role in reducing the cost of satellite launches, is the de...
by csaurabh
04 Jan 2025 11:28
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

India's share of space activity is slipping in the face of exponential expansion by private companies like SpaceX. Even Chinese companies are also quickly expanding and evolving. I hope that Indian companies manage to get a foothold in the launch market, to do the same, otherwise we will be left we...
by csaurabh
03 Jan 2025 15:25
Forum: Military Issues & History Forum
Topic: Kaveri & Aero-Engine: News & Discussion
Replies: 7059
Views: 3099760

Re: Kaveri & Aero-Engine: News & Discussion

maitya ji - very clearly articulated.

Hopefully that will shut people up about fancy ideas of getting an M88 core from somewhere to fix the Kaveri and other such nonsense.
by csaurabh
12 Dec 2024 15:03
Forum: Military Issues & History Forum
Topic: Kaveri & Aero-Engine: News & Discussion
Replies: 7059
Views: 3099760

Re: Kaveri & Aero-Engine: News & Discussion

I was watching one of the defence youtube channels where they said that Kaveri is now performing almost same as GE404 engine, it's just 150 kg heavier. If this is true then we should straight up ditch F404 and use Kaveri. The Tejas has almost 10,000 kg of fuel+weapons carrying capacity. You can easi...
by csaurabh
12 Dec 2024 14:51
Forum: Military Issues & History Forum
Topic: Twin Engine Deck Based Fighter (TEDBF): News & Discussion
Replies: 849
Views: 526331

Re: Twin Engine Deck Based Fighter (TEDBF): News & Discussion

This is exactly what I was telling those like Alpha Defense and others who were saying that due to Dassault's large backlog, the Navy's Rafales couldn't be delivered till 2030 or so. I was insisting that if a company takes on an order it is their obligation to deliver on time or else penalties woul...
by csaurabh
27 Nov 2024 11:40
Forum: Military Issues & History Forum
Topic: The case for an unmanned twin engined flying wing
Replies: 10
Views: 7231

Re: The case for an unmanned twin engined flying wing

This is an excellent article. Wish our babooze and import pasand generals could show this kind of out-of-box thinking. Western air forces may be relying on converted airliners because they have a massive civilian airliner manufacturing industry in the first place.. which we don't have. So need not b...
by csaurabh
19 Nov 2024 17:51
Forum: Military Issues & History Forum
Topic: Advanced Medium Combat Aircraft: News & Discussion - 30 August 2019
Replies: 951
Views: 681324

Re: Advanced Medium Combat Aircraft: News & Discussion - 30 August 2019

What is the point of this without the engine. How can it be used in AMCA if the engine is being imported. Haven't heard of the 110 kN turbofan to be developed with a foreign partner for the AMCA? Engine to be developed with a foreign partner is a very vague idea at this point. But even if that is t...
by csaurabh
19 Nov 2024 14:23
Forum: Science, Economics & Technology Forum
Topic: Indian Economy News & Discussion - Nov 27 2017
Replies: 8953
Views: 4069568

Re: Indian Economy News & Discussion - Nov 27 2017

Half of the things (68 billion $) we import is electrical, electronics and heavy machinery items.That means we need to some how find private investment to manufacture these things locally. I would have thought after Galwan, we would have reversed this trend somehow. We have not done that. Our consu...
by csaurabh
19 Nov 2024 14:21
Forum: Military Issues & History Forum
Topic: Advanced Medium Combat Aircraft: News & Discussion - 30 August 2019
Replies: 951
Views: 681324

Re: Advanced Medium Combat Aircraft: News & Discussion - 30 August 2019

https://www.msn.com/en-in/news/other/iisc-bengaluru-develops-indigenous-fuel-injector-for-fighter-planes-to-be-tested-on-amca/ar-AA1ul1tc?ocid=msedgntp&pc=U531&cvid=379cc759466543fab22cb68d10b41a85&ei=15 IISc-Bengaluru develops indigenous fuel injector for fighter planes, to be tested o...
by csaurabh
09 Aug 2024 11:33
Forum: Science, Economics & Technology Forum
Topic: Technolgies useful for Indian problems
Replies: 772
Views: 390871

Re: Technolgies useful for Indian problems

"We transform carbon dioxide into sustainable aviation fuel" This is very interesting tech, Haresh ji, 1000+ barrels a day in California! India can use this tech and garner carbon credits to drive the costs further downwards. Each Indian coal plant in the nation can feed their CO2 and pro...
by csaurabh
13 May 2024 10:56
Forum: Science, Economics & Technology Forum
Topic: Indian Economy News & Discussion - Nov 27 2017
Replies: 8953
Views: 4069568

Re: Indian Economy News & Discussion - Nov 27 2017

https://pbs.twimg.com/media/GNXQmrxWQAAMzC0?format=jpg&name=medium https://economictimes.indiatimes.com/industry/telecom/telecom-news/india-to-begin-producing-t100-carbon-fibre-in-2-5-years-v-k-saraswat/articleshow/109978486.cms?from=mdr There's no such thing as 'T100' carbon fibre. The TXX des...
by csaurabh
10 May 2024 17:17
Forum: Science, Economics & Technology Forum
Topic: Leapfrog / Disruptive Technologies
Replies: 449
Views: 276106

Re: Leapfrog / Disruptive Technologies

I thought this was pretty impressive: Printing Parts with Liquid Metal https://www.youtube.com/watch?v=H93W-CiOT4A Looks awful, a basic pipe bender plus some welding will produce much better aluminium struts to be used in furniture probably in less time. This is essentially a casting process but le...
by csaurabh
16 Jan 2024 18:33
Forum: Military Issues & History Forum
Topic: UAVs, Drones, Remote Surveillance Tech
Replies: 3060
Views: 1518345

Re: UAVs, Drones, Remote Surveillance Tech

Explained beautifully. It's amazing that so many highly educated people in India are unable to understand this. Well to be honest, 'educated' or otherwise, most people simply don't know the circus of the public procurement system. I myself didn't until I became part of it. The other major problem i...
by csaurabh
09 Jan 2024 15:22
Forum: Military Issues & History Forum
Topic: Chinese Armed Forces: News & Discussion
Replies: 825
Views: 671621

Re: Chinese Armed Forces: News & Discussion

Would not compressed air leak out more whereas water uncompressed would leak less? It's getting OT but: 1. If a tank is designed to be pressurized, it will be designed to not leak gases 2. If a tank isn't supposed to be pressurized, it should be strong enough to withstand the load whether water or ...
by csaurabh
09 Jan 2024 11:15
Forum: Military Issues & History Forum
Topic: Chinese Armed Forces: News & Discussion
Replies: 825
Views: 671621

Re: Chinese Armed Forces: News & Discussion

I think the article is misleading. There is a reason why you may want to fill up the missiles with water and that is to prevent the missiles from buckling under the payload weight when they themselves are empty of weight/fuel. The reason the missiles are empty of fuel is because they couldn't make ...
by csaurabh
01 Jan 2024 11:02
Forum: Military Issues & History Forum
Topic: Tejas Mk2 Medium Weight Fighter: News & Discussion - 23 February 2019
Replies: 2982
Views: 1696511

Re: Tejas Mk2 Medium Weight Fighter: News & Discussion - 23 February 2019

Thanks for confirming my assessment. Converting technical capabilities to indigenous subsystems requires a national mission. Unfortunately our ordering process focuses mostly on costs, so favours suppliers who've already monetised their research costs. There's no incentive to develop unless the end...
by csaurabh
22 Dec 2023 17:04
Forum: Military Issues & History Forum
Topic: Tejas Mk2 Medium Weight Fighter: News & Discussion - 23 February 2019
Replies: 2982
Views: 1696511

Re: Tejas Mk2 Medium Weight Fighter: News & Discussion - 23 February 2019

ISRO/DRDO/etc have been trying to develop some CAD/CAM/simulation softwares for decades. Nothing much has come from it other than some internal codes for specific purposes (eg. Computational Fluid dynamics ). But nothing that is like a commercial software. ... I am aware of this Autolay thing. I do...
by csaurabh
21 Dec 2023 18:12
Forum: Military Issues & History Forum
Topic: Tejas Mk2 Medium Weight Fighter: News & Discussion - 23 February 2019
Replies: 2982
Views: 1696511

Re: Tejas Mk2 Medium Weight Fighter: News & Discussion - 23 February 2019

^^Yes I can partly confirm to the point of paper 2D drawing being replaced by computer 3D modelling. Having seen first hand, my father-in-law standing for hours and drawing for HAL, we have moved or should I say leapfrogged. Did DRDO/HAL develop their own 3D software or did they use SolidWorks whic...
by csaurabh
19 Dec 2023 11:57
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

Yet I also find it bizarre that we can't develop such technology ourselves. This shouldn't be some super-difficult thing to do. I don't know why we have to boast and brag that we are a space power, when we have to buy anything and everything from abroad. We can do this stuff more cheaply. Unfortuna...
by csaurabh
06 Dec 2023 10:24
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

What is a hybrid rocket and what are the green propellants used? I don't see any info about this on their website either.. Hybrid rocket means that it is a hybrid of liquid rocket and solid rocket. Typically it means using a solid fuel and liquid oxidiser. Virgin Galactic uses hybrid rocket in its ...
by csaurabh
29 Nov 2023 09:37
Forum: Military Issues & History Forum
Topic: Kaveri & Aero-Engine: News & Discussion
Replies: 7059
Views: 3099760

Re: Kaveri & Aero-Engine: News & Discussion

https://x.com/alpha_defense/status/1729393639703662716?s=20 ---> 𝗜𝗡𝗥 𝟱𝟱𝟴𝟵! Rs 5589 was the difference in the price between Acoustics India Pvt Ltd and BaE-HAL Software Ltd bids for the role *Senior Domain Expert*. https://x.com/Tej_Intel/status/1729136458542522424?s=20 ---> Imagine a company has to...
by csaurabh
01 Sep 2023 16:44
Forum: Science, Economics & Technology Forum
Topic: Chandrayaan 3: Launch and Discussions
Replies: 1361
Views: 1141675

Re: Chandrayaan 3: Launch and Discussions

Tis great on appointment. I however feel that all retired ISRO people have a ton of stuff to contribute. The GOI should retain them (the leaders and people with solid contributions) in some advisory capacity on Space. They can chart out future stuff and also provide youngsters in ISRO their knowled...
by csaurabh
11 Aug 2023 11:06
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

Lots of Info about Selection of Build Materiel for STARSHIP I don't want to get into a debate of Stainless steel vs Carbon Fibre Composites. Both are good, depending on the application. Rather my problem is with Elon Musk in general and Starship in Particular. Elon Musk has made a list of extraordi...
by csaurabh
04 Aug 2023 20:59
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

Elon said the following on usage of stainless steel by Spacex in starship instead of Aluminium/carbon fiber: Carbon Fiber Composite: 1. Costs 130$/kg 2. For Starship needed a huge autoclave (9 meters dia, 70 meters length) 3. Composites are porous to hot gases, needs an inner liner which adds to co...
by csaurabh
19 Apr 2023 12:22
Forum: Science, Economics & Technology Forum
Topic: Indian Railways Thread (Dec 2015)
Replies: 4955
Views: 2141430

Re: Indian Railways Thread (Dec 2015)

https://swarajyamag.com/infrastructure/railways-float-bids-for-procurement-of-19-modern-rail-testing-cars-for-detection-of-track-defects The tender has been floated with the requirements like the manufacturer having supplied SPURT cars in multiple countries and having an experience of testing more t...
by csaurabh
07 Apr 2023 10:33
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

In a more positive news, Cabinet has given nod to Indian Space Policy 2023...the aim is to encourage Pvt Sector in activities such as satellite design & even launches while ISRO will focus on advanced Space related R&D activities. I am pretty sure there will be a lot of hand-holding from IS...
by csaurabh
06 Apr 2023 18:17
Forum: Science, Economics & Technology Forum
Topic: Indian Space Program: News & Discussion
Replies: 1320
Views: 1303070

Re: Indian Space Program: News & Discussion

Let's put things in perspective here.. China does 40-60 launches a year, some of them really heavy ones. We do 4-6 . China has a space station in orbit and rovers on Mars, things we can only dream of China has a massive pool of talent in R&D for aerospace and defence research, while we run after...
by csaurabh
16 Feb 2023 08:21
Forum: Military Issues & History Forum
Topic: Kaveri & Aero-Engine: News & Discussion
Replies: 7059
Views: 3099760

Re: Kaveri & Aero-Engine: News & Discussion

Commercial aviation (and by extension engines for it) is a much bigger deal than military aviation. Moreover converted versions of passenger aeroplanes are used for military transport, refuelers, awacs, etc. However as a country we have invested into developing fighter aircraft and some helicopters ...
by csaurabh
14 Feb 2023 09:43
Forum: Science, Economics & Technology Forum
Topic: Indian Education System
Replies: 3996
Views: 1109343

Re: Indian Education System

Amber G., you measure the institution's success by the success of its students/graduates. In other words, the student/graduate is the 'product'. By that measure, I am also a successful 'product' of IITK. Also I am a successful 'product' of my school and coaching institution. It could be argued that ...
by csaurabh
10 Feb 2023 18:28
Forum: Strategy, Politics & International Relations Forum
Topic: India-US relations: News and Discussions IV
Replies: 10670
Views: 3941274

Re: India-US relations: News and Discussions IV

US funding to Indian academia would make it even bigger of a disaster than it currently is. Already as it is, Indian scientific endeavour is totally stymied by the need to generate 'papers' approved by 'international publications' which is mostly controlled by US and EU. Any kind of indigenization o...
by csaurabh
07 Feb 2023 11:44
Forum: Military Issues & History Forum
Topic: India's R&D in Defence DRDO, PSUs and Private Sector
Replies: 5343
Views: 2086411

Re: India's R&D in Defence DRDO, PSUs and Private Sector

What the flying-f@$%! We have China breathing down our necks & the Forces have spent only 52% of their Capex in 2022-23. Why? Because cannot place orders with Russia Here is a novel idea - how about ordering indigenous weapons? https://swarajyamag.com/defence/defence-just-50-per-cent-of-the-all...
by csaurabh
07 Feb 2023 11:40
Forum: Science, Economics & Technology Forum
Topic: Indian Education System
Replies: 3996
Views: 1109343

Re: Indian Education System

Some news from my alma mater IIT Kanpur... (Similar news items from other IIT's and premier institutes in India) As the placements season kicks off - I - Impressive! ₹40,000,00 (~$500,000) starting salary+comp for a fresh graduate from IIT Kanpur. IIT-K student hits record ₹4 crore placement jackpo...
by csaurabh
26 Jan 2023 14:04
Forum: Military Issues & History Forum
Topic: Artillery Corps: News & Discussion
Replies: 3536
Views: 3066245

Re: Artillery Corps: News & Discussion

Can somebody remind me, which verse of Veda says that or for the new age people, what article of the constitution? We are not a country governed by Vedas or constitutions. We are governed by 'Circulars' and 'Notices' issued by random petty bureaucrats. It is a a legacy of the British raj that we do...
by csaurabh
25 Jan 2023 14:36
Forum: Military Issues & History Forum
Topic: India's R&D in Defence DRDO, PSUs and Private Sector
Replies: 5343
Views: 2086411

Re: India's R&D in Defence DRDO, PSUs and Private Sector

Jet pack i don't understand. But robotic mules make a great deal of sense. No, they don't. It has been proven conclusively that conventional mules (ie. of the horse variety) are simply superior to robotic mules in every way. IC-engine based mules make a ton of noise, and battery powered ones just l...