Search found 682 matches
- 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...
- 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...
- 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 ...
- 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 ...
- 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...
- 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...
- 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...
- 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...
- 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.
Hopefully that will shut people up about fancy ideas of getting an M88 core from somewhere to fix the Kaveri and other such nonsense.
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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 ...
- 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 ...
- 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...
- 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...
- 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...
- 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...
- 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 ...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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 ...
- 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 ...
- 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...
- 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...
- 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...
- 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...
- 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...