Bharat Rakshak

JayS

Kartik wrote: N-LCA was designed off of the Tejas trainer and not the Tejas single seat Mk1 design.

Interestingly, its the LCA Trainer which is designed from NLCA, not the other way round.

JayS

They want someone to invest money to build sum total of 20 engines and possibly 80 more in time frame of 10-12yrs. No one but HAL can even take a dig at it given the terrible business case. And these engines will turn out to be ultra costly at such low production rate and no other program to spread ...

JayS

All engine makers have proposals for the 110KN engine. That is why you see even Reddygaru saying we're looking at JV in all his interviews. The tempest engine with increased electrical power generation was tomtomed at AI this year too by RR. Unconventional methods where you dont have axial compress...

JayS

. If the plane can have a combat radius of 400-500 Kms with an on station time of 2.5 hours and a payload capacity of 4 BVR missiles, 2 WVR missiles, 1 EW pod and 1 centreline drop tank, it would be a very viable fighter to provide air cover to the fleet. Thats quite a steep requirement. Forget NLC...

JayS

^^^ It is old news from Sept 2019. Saraswat committee is not looking at engine, but AMCA. Not old news. There are two committees, apperently. IDRW obviously lifted the news from Sjha's TL and added some generic stuff to blow it to a half page write up. I already saw the original tweet day before ye...

JayS

Two key pointers from above article: - Basic engagement envelop is being explored as of now. There likely will be no envelop expansion in terms of payload, but of course the data gathered will bolster the already available simulation data/refined simulation data to give a good graps on the dynamics ...

JayS

Sjha tweeted about the committee. My reaction was - Great. Another committee. Great. Another 2yrs to be wasted in showing something is going on. What the hell we were doing for past 6yrs then...??

JayS

jayS and agupta don't forget the levcons. I think mid fuselage, stronger undercarriage and adding levcons. Then add the FCS changes to accommodate the levcons. I would say 20% structural and 25% additional FCS and systems integration. i.e. 10-15% original estimate + 5% more for levcons and wing cha...

JayS

The changes are of the order of 40%. They initially thought it would be 10-15% limited only to the mid fuselage but it turned out to be a grossly wrong estimate. If we assume another 20% more thrust possible from the engine, we should have another 2-2.2T added to the TOW. If some margin exists in t...

JayS

Then all the better no? So what are the structural differences between Mk1A and NLCA? Other than undercarriage and stiffened fuselage mid section. I want to see that table so we can answer the mail. The changes are of the order of 40%. They initially thought it would be 10-15% limited only to the m...

JayS

I'll just leave it here.

JayS

Apparently, IN wanted NAMCA. But ADA wanted to first develop a 4G Naval fighter. TEDBF is the compromise and if ADA and IN are on the same page, its a good middle ground. I have had my own doubts about it but finally, this is what matters - Its something that IN is happy with and ADA can deliver in ...

JayS

Am I the only one or it does look like NLCA rolled a bit towards starboard side after leaving the ramp, its control system corrected it and then corrected the heading a wee bit towards the port side to make it perfectly going in the headwind...??

JayS

Noob question...from the photos, I can't see any kind of sensors and/or instruments on these planes (at least on the outside). With the absence of these, what kinds of data is being collected? Possibly, we have accelerometers mounted inside to capture stuff like shock experienced during landing, gr...

JayS

https://swarajyamag.com/insta/office-space-leasing-activity-in-india-touched-record-high-in-2019-it-sector-co-working-spaces-drive-growth Buoyed by high demand for office spaces, leasing activity in India touched a record high in 2019 with a gross leasing volume of 69.4 million square feet - a rise ...

JayS

8 on order, 4 trainers and 4 single seater. I have seen multiple references to this one. But I have not seen any official reference for the money actually been paid. Even for the FOC order of LCA there was a contract in place since 2010, but only a small portion of the money was given to HAL until ...

JayS

LOL. B-NG on NLCA Mk1 ain't happening. The inboard wing pylon has space limitation and can take AAM at max. No other pylon would be suitable for B-NG. As I said, we will have to wait for for ADA to run through envelop expansion flying from the deck of INS Vik, before we can know what payload capabil...

JayS

Philip, if we set aside the cost (which we cant in reality), what is the mission that you think this squadron of NLCA Mk1 that you are proposing will undertake for IN and in general, the Indian military? Strafing and light CAS? LIFT/Training? Airshows? Maturing tech for TEDBF? That is what a lot of...

JayS

Simulation is not trusted for any safety or mission critical aspects. As per my understanding, none of the aerodynamic aspects are certified based on simulation. However, electrical simulations are sometimes accepted as means of compliance now. Of course, they are much simpler than aerodynamics. I ...

JayS

Impressive show by NP1. Quite a bit of workload for one day. I suppose Capt Dahia was piloting NP1.

JayS

Atleast 6-8 NLCA Mk1 will be built to thorough test carrier flying across the full spectrum of operations. Navy has already paid for them in 2010. And this is what is horribly wrong with the global, especially US & European aviation industry, leading to public failures and avoidable loss of liv...

JayS

Philip, if we set aside the cost (which we cant in reality), what is the mission that you think this squadron of NLCA Mk1 that you are proposing will undertake for IN and in general, the Indian military? Strafing and light CAS? LIFT/Training? Airshows? Maturing tech for TEDBF? That is what a lot of...

JayS

tasrkar is right about need for extensive testing. The Thresher failure was due to a inexpensive fitting that failed. I dont think anyone is arguing testing is not important or extensive testing is not needed. In fact I always lamant we do too less testing and HW level iterations, including develop...

JayS

It probably is also the max that NLCA MK1 can TO with. But we need to see about that. We will only know when ADA flight tests from AC for MTOW. They should have a fair bit of idea now as well from the simulations , but so far there is no talk about MTOW of NLCA Mk1 from Ski jump that I could locate...

JayS

The only frankensteins in the fighter program are the IJT and the AMCA, where the designers gave up the baseline LCA delta wing design for some new wing design -- they ended up f***ing the IJT and it remains to be seen what they'll make of the AMCA. (Those who're unaware, please google up the story...

JayS

Longer TO roll. That must be the one with 200m roll available. It makes sense to err on the safer side.

https://en.m.wikipedia.org/wiki/INS_Vik ... trials.jpg

PS - just saw saw Dileep saar's post above.

JayS

https://economictimes.indiatimes.com/markets/stocks/news/iip-turns-positive-dont-interpret-this-as-green-shoots-in-economy-say-experts/articleshow/73193360.cms After contracting for three consecutive months, Index of Industrial Production (IIP) grew at 1.8 per cent in November on the back of improvi...

JayS

Arrested recovery done. And Ski-jump TO from Vik soon. Congrats Team LCA Navy for this historic achievement. Special kudos to Cmd Mao Sir. And congrats to all Tejas Fans too. A happy day today. Many more to come. I read, NLCA has an impeccable record of hook engagement so far, in every single attempt.

JayS

Is there Reimagining the Indian Civilization Nation State thread? Where we can propose what would work better in the future. I have some ideas which I am penning down... and this purely is an draft exercise and subject to modification as my thoughts get challenged by inputs from my circle. 1) No pr...

JayS

Jay, Splitter plates are not that heavy, not even in the tens of kgs. The entire LCA fin weighs 20 some kgs if I remember correctly. Also, the frontal area and spillage is not reduced by use of a DSI. The boundary layer is spilled in either case. Most of it is for RCS reduction. I have a basic unde...

JayS

I have a question. I see the booster on XRSAM and Barak ER. Wouldn't that make the launch tubes wider? Is it not better to design the missile and the booster of the same diameter, with the missile being sightly shorter and wider than current and the booster being taller and slimmer than current? Wh...

JayS

The moving parts is mostly from the last generation when fighters and fighter bombers were being designed to fly much faster than most 4th gen fighters are. Such as the moving half cone on the Mirage-2000. Only current gen fighter that features any moving parts in the intake is the Eurofighter Typh...

JayS

Ok, here is some good news. The proposal for the procurement of 2 A-330 AWACs reaches final stage. Air Force set to get two more warning systems The Defence Acquisition Council (DAC) last month cleared a Rs 9,000 crore joint proposal of the Defence Research and Development Organization (DRDO) and t...

JayS

Interesting read. This is a Bachelor Thesis on AWACS Static Loads. https://e-archivo.uc3m.es/bitstream/handle/10016/27771/TFG_Alejandro_Muniz_Luis_2017.pdf?sequence=1&isAllowed=y And then there is another published paper https://www.asdjournal.org/public/Proceedings/IFASD_2017/IFASD-2017-006.pd...

JayS

- Internal fuel is always more preferable to any externally carried fuel. Having more flexibility by having more external payload and less internal fuel makes little sense. Carrying external fuel gives diminishing returnes and it is rarely required to deliver 7-9T of bombs over short distances. No ...

JayS

Do we have some member who is savvy in Telecom sector and can map the Desi companies who can contribute to the Desi 5G setup in near future with right kind of push..?? Companies, their existing products related to 5G, their capabilities for development in near future, fund requirmenets and so on. Wo...

JayS

The Radar related discussion from last couple of pages moved to Radar thread. Continue there. I know a bit abt Concurrent Engineering.(I hope!). It is overrated for aerospace. Apparently, concurrent engineering is not very good idea for Aerospace products, but having good people with multi domain ex...

JayS

7 ton internal fuel might not be feasible. The F18 E/F carries some 6600 KG and has a empty take of weight of 14400 KG. A internal fuel of 6 tons might be a better guess given the size of the plane . The Rafale has 1150 litre CFTs. A higher external payload of 8 to 9 tons would give the aircraft mo...

JayS

One would think increasing MTOW would also necessitate an increased bring back weight? How does that affect design considerations when you're talking about choosing between 25tons and 22tons say. I don't think there is a linear relationship. The typical mission profiles will have much lower weapons...

JayS

Yeah 7t and if the cfts being displayed in images play out that’s another 2-2.5 tons.. that will be pretty rocking! I understand that 30 tons may not be possible for deck based but it should be explored for iaf.. if it is fully loaded let it take off because the world is round... there is place for...

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