Bharat Rakshak

geeth

How about a new thread on Marine Propulsion modes, and challenges ahead for Indian Navy?

geeth

Coming to think of it, why the bombs should be in the shape they are made? Why cant it be cylindrical in shape like a missile? For eg., remove the control gadgets and fill it from top to bottom with rocket fuel..like a Aakash with 4 inch dia and 13 ft long will weigh 250 kg and will be much slender ...

geeth

With vizhinjam we have to develop coastal shipping with 500-1000 TEU vessels in a massive way..and also the rail network. there are no industries in kerala and transportation by road will be costly. Even rail network at present is congested.

geeth

Well.. Nobody, as far as I can see, has claimed R&D folks to be angels from heaven. In fact people ridicule the scientists day-in and day-out for their lack of commitments, delays, screw ups etc. Even the Navy is not always not right everytime. But their ATTITUDE from available information is a ...

geeth

IMO the paper is chart paper of A3 size..

geeth

I think the vortex creates a low pressure - which means that the wind beneath the wings exerts an upward pressure on the wings - so that little romantic love byte is true. vortices are formed towards the trailing edge of the wing due to flow separation and is detrimental to lift. Another instance i...

geeth

I don't see anything about airflow from "beneath the wing" etc here either? 'll bet an airplane doesn't take off as fast on a ski jump as it does on a flat surface.

Loss in speed will get converted to gain in height...?

geeth

I don't see anything about airflow from "beneath the wing" etc here either? The "airflow" is the headwind (either due to the movement of ship or natural wind blowing or both), flowing horizontally; when the a/c takes off, this wind hits the bottom of the wing surface. Because of...

geeth

Of course, you can, but you wont go anywhere

You can move forward (if not race ahead) into the wind with a solid wing sail having an unsymmetric airfoil cross section..just wanted to highlight the force generated by airfoil section...google around for details

geeth

You obviously can't sail directly upwind

You can.

geeth

^^A Skijump helps an a/c in : 1. Gaining height in a short span of time which is crucial while taking off 2. Increase in angle of attack particularly when flying into headwind, which helps in increased lift and increase in stall AoA 3. While taking off at an angle, engine thrust has a vertical as we...

geeth

Depending on how you hoist the sail, one can also.say that the sails capture energy from the flow like a impulse/reaction turbine vane.

geeth

So the sea is more difficult than flying low over mountainous terrain or low over desert? May be there is some element of truth in it. It may not be more difficult, but that of disorientation (sort of) while flying over the sea, which can be overcome with practice. For eg., I understand a Jaguar P...

geeth

Tullu is a brand name and they used to make low tech mono block pumps..Have they goe up the ladder in technology? I dont know.

geeth

It will be very difficult and expensive to make every chip/ circuit board etc to withstand enormous amount of shock & vibration. Instead, what is usually done is: 1. Fix the equipment / machinery (say gun) on a properly designed shock&vibration proof mounting. This will mitigate the transmis...

geeth

My resistance is to this very question of "abiding by your rules". Why does India need to abide by the rules set by goras ??? That is because we still need a lot of tech from abroad. We cant make everything on our own country. It is like taking some membership card of some city club..if y...

geeth

1. Revenues. We could make a nice packet by selling missiles to Algeria, for instance. We can make an agreement that they will fire them only towards east/west/south. You say they who's to stop them from targeting north? Well, there's the agreement. 2. Leverage. If you are keen on selling Pakistan ...

geeth

There is no point spending billions on a carrier if the tip of the spear aircraft you plan to fly off it are the unreliably engined MiG-29K Is there any truth about the bolded part? If so, can you show it? 'Cause I searched google but cant find any. If you are just quoting from heresay, then better...

geeth

one thing is sure- goras look after their own

Ha ha! Everybody looks after themselves..India is the only exception who gives precedence to interests of other countries than their own. Often we dont mind getting screwed in the bargain.

geeth

^^^ I can't imagine what advantage India can have by selling missiles of range more than 300 km. And to how many countries can we sell? Except Vietnam I dont find any potential customer who will be trustworthy to sell these missiles.

geeth

Can you imagine a scenario 10x better than what currently happened? I can.

Did it ever cross your mind how the Dogra regiment would feel about it? A soldier lives and fights only for his honour! And it won't be honourable for him to ask Myanmar Army to do what is essentially his job.

geeth

The catch is ...they have procured engines for only 40 LCA. IIRC..F404 is not going to be licence produced. Heck..even 414 deal is not yet inked. What if Amreekhan start playing with Indian LCA choohah? Wait for Kaveri?

geeth

^^^If the top brass had decided to purchase only 36 Rafale, it only means : 1. We cannot afford this plane in numbers. Unlike the previous Govt, this a/c is not looked at as MMRCA. It was made amply clear by defence minister when he declared that MMRCA is dead. In any case IAF was originally looking...

geeth

Very sad news..RIP RayC sir!

geeth

^^^ Yes, I have also heard someone saying that there are occasions when pilots have to be literally lifted out of cockpits after a sortie...but what is being questioned is their willingness to fly a MIG 21 for another 15-20 years but would stoutly refuse to accept a LCA MK1, in its present form, tho...

geeth

That would be HF-25. Then this HF25 would be a better a/c than the Hawk anyday..IMO. With a marginal decrease in power, most of the tests of the engine and any new modifications to the a/c can be done on these test platforms. Not only that, we can test the future variants of the engines as well, on...

geeth

[b I am also of the opinion that we should take KAVERI MKI and build an aircraft around it and fly that to get information and knowledge that will help us to develop MKII, hopefully for use on LCA MK II./b] Instead of building a new plane, we could test the existing kaveri on a LCA itself after con...

geeth

UBji, It is not the low speed tunnels we are talking about. Designing a low speed tunnel would be an undergrad project and the tunnel can be fabricated using wood and plywood. It is the supersonic/transonic/hypersonic tunnels I had in mind. It needs investment and considerable design work. Ofcourse ...

geeth

^^^Regarding wind tunnels..IIRC there was only one hypersonic wind tunnel at VSSC and may be one transonic tunnel at NAL during my student days in.early eighties..often people used to go abroad for testing and experimental validation for which we pay through our nose. Babus dont mind paying for thes...

geeth

How will you develop the codes without knowing the flight characteristics ? Who else other than the designer knows it and the design limits? Brits developed FBW in their OWN plane. So did Russians and all others including India. Even here Americans parted with the details of F 16 to Indians so that ...

geeth

If the Navy can build a new hull around steam turbines imported from abroad, what is going to stop you from writing computer code for flight controls for modifications of a fighter/trainer that you made for 20 odd years and in fact fixed all the bugs in the original and improved it like the Ajeet? ...

geeth

Is it possible to design/build FBW system / write control laws on an a/c bought from abroad? If so why ADA had to go to.amrrekha to test? Testing it on one of the IAF imported maal would have acheived the goal.

geeth

Further to my earlier post I find the salient features about the new GST from what I could gather from various sources and my own personal experience: POSITIVES of GST compared to existing VAT regime. 1. The CGST and SGSTs are calculated based on basic value of the good. I.e., if Rs 100 is the cost,...

geeth

Even now you cant avoid tax if you want credit..if you dont want credit, you can still avoid paying tax with new GST also. IMO tax compliance can be enforced with better tech and vigil onlee..more later as I am typing from mobile.

geeth

^^I tried..but I find every article is more an opinion than hard facts. All are recycling the same thing that how is drastically different than GST. The "drastic" part is what I am trying to figure out..to me it appears the si.ple trader may end up paying more because (a) rates may turn ou...

geeth

[b And who is Dr Gopalaswamy sitting in US and ridiculing DRDO?/b] IIRC he was the guy who proposed in flight liquifaction of air using some vortex principle for the hypersonic plane..that was a flop show. I think he was in charge of hypersonic plane when Dr Kalam was DRDO chief. I have seen his mo...

geeth

Is the 25% rate for both SGST AND CGST together? How about 2% CST with C form? If this is not accommodated cost of capital goods/project cost is going to increase as there is no tax credit since no resale is involved.

geeth

12 tons per ACRE or HECTARE?

geeth

I feel it is just to sqeeze the balls of Dassault...GoI will be mad to go after Gripen, anyway you look at it.

geeth

I am not sure what that proves other than we are buying Honeywell engines...where does it prove sabotage, malicious intent, etc. ?

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But I am sure your claim about "selection after due tender process" is bunkum

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