Bharat Rakshak

Indranil

For various tenders it is clear that GaN based Vivaldi TRMs, QTRMs, planks and arrays are entering manufacturing. And these are not just for Uttam Mk2.

When Uttam mk2 is fabricated, it will most probably enter testing with the new radome fitted on business jet, and then Tejas mk2 prototype.

Indranil

I don't understand the confusion. Uttam mk1 for Tejas mk1a, GaAs based. Nose radome is bigger than required. Changing it at this time will delay Mk1A production. Uttam mk2 for Tejas mk2, GaN based. Nose radome optimized for optimal clearance. The smaller radar and lower clearance means that the rada...

Indranil

Thank you Hari Sir.

Indranil

Vicky wrote:Tender baba says Rudram-II will have an IIR seeker being developed under a project called DIIRS-2 by RCI

Clarification. DIIRS-2 is department is a division inside RCI. It stands for Directorate of Imaging Infrared Seeker.

Indranil

https://twitter.com/SJha1618/status/1470639637051834368 Looks suspiciously similar to Heron-TP but doesn't seem to be a ripoff. New one from ADE? Fuselage structure is different, presence of winglets, no top side engine intake, rear end fuselage is bendy. https://pbs.twimg.com/media/FGjC61nVEAEQMel...

Indranil

How are the empty shells of the GsH23 ejected during firing in flight? Come out of the two ports below the barrel. https://twitter.com/TheAvenger82/status/1470046929312632834?s=20 ---> Tejas Mk1 with GsH 23 twin barrel 23mm gun. https://pbs.twimg.com/media/FGan4xpUUAM83jS?format=jpg&name=medium

Indranil

VLSRSAM is not larger than Astra Mk1. It is slightly longer because of the JVC. Astra Mk1 itself had very high TWR. So no augmentation was required. QRSAM is larger than Astra Mk1. Astra Mk2 is almost identical to Astra Mk1 in overall dimensions. To the naked eye, one can't tell the difference. But ...

Indranil

Only if we can have a IL 78 FTB which can act as refuelling tanker in normal days..... I mean if we can have a IL 78 refueller which if outfitted to be converted to FTB in few days :idea: Naah! That's not enough. Here's a better idea: Cargo on even days, refueler on even days and engine test bed on...

Indranil

Gun and Astra firing soon.

Indranil

India's drone-development sector is now extremely vibrant with very large and small players. Here Pallava Bagla speaks to Udayant Malhoutra and others from Dynamatics. Developing everything from scratch is no joke!

https://www.indiascience.in/videos/futu ... in-india-e

Indranil

The FTBs are from the SPs. The LSPs are used for testing of the modules.

Indranil

So happy to see Chander sir again.

I really feel bad for him. He is one man who did not get his due in recognition.

Indranil

It's on your generation to change that. I have faith.

Indranil

BIG: LRDE is looking at Uttam Mk2 antenna with a repositioner with up to +-90 degree and +-20 degree slewability in azimuth and elevation respectively. That is state of the art! As you know Uttam Mk2 has better capability than Mk1 with reduced size. LRDE and ADA have also worked out how to place the...

Indranil

If IAF doesn't push for MRFA today, it won't happen in the next 6-7 years. If you ask my opinion, if ADA/HAL can stick to first flight by 2022 and certification for 2024, then it will probably never happen.

Indranil

YashG wrote: IR, what technologies in Mk2 are so sticky that putting in more money wont accelerate them no matter how. Genuinely asking ?

None. Design is complete. Manufacturing has commenced. There are two things to complete. 1. Complete flight testing. and 2. Stabilize production line.

Indranil

All this discussion is on the pretext that IAF is not in favour of Mk2. IAF chief has to balance a lot of things. Put yourselves in his shoes and think what you would need to do to get some Mk2 and some MRFA. The MRFA birds are flying today and the Mk2 is development. Funds for Mk2s development is a...

Indranil

I have been saying from day one that Boeing will sell more than 1000 T-7s. I won't be surprised if they touch 2000. So many F5s to replace!

Indranil

Are we making too much ado about nothing?

Indranil

Go on Saurabh and your team. We are cheering for you!

Indranil

8th Oct has passed and the missile test that was supposed to take place between 6th and 8th oct has not happened. This is the 3rd consecutive time that the planned missile test has not happened. Last month we did not test the A5 MIRV after making tall claims about it. DRDO took the excuse of testin...

Indranil

It is the harmonics that usually cause the problems. Depending on which ones are dominant and adversely affects the systems, they have to be dampened out using judiciously placed ballast weights. The main rotors can be dynamically balanced to run butter smooth. More art than science. Sirjee, Raghu ...

Indranil

I remember that one. Yes MPDMS, SHORAD and V666 is confusing. I am going to follow the tenders for a little longer to have better clarity.

Indranil

Many things related to Mk1A are already in testing. Rest should come through official sources.

Mk1B is my imagination

Indranil

Tender issued to manufacture 4 prototypes of of the RCI designed MANPADS launcher - MPDMS project. The launcher is identified as V-666. Not much other info. You missed out the details: 1. This launcher will be used for firing MANPADS weapon (missile) of diameter 90+3 mm, length 2000±50 mm and 20±1 ...

Indranil

Is small size of Tejas a limiting factor in it's aerodynamic performance? It still has not been cleared for 9G AFAIK. It also seems like canards can't be fitted unless length is increased due to lack of space for instruments required. A lot of design changes like the lengthening of fuselage and add...

Indranil

That channel is used to generate a significant amount of body lift.

Indranil

What's on the spine of the Mig29 UPG?

Indranil

If a big tree fell in a forest and nobody heard ....

Indranil

IMHO too expensive to upgrade or throw away. Most probably older missiles will be reallocated to less sensitive locations just like what they are doing with the Pechoras, etc.

Indranil

Nice deduction. But it is VEDA only. It is under ASL. The Project director's name is Dr. N Kishore Nath. Seems like it is a "defense satellite launch vehicle".
http://vbithyd.ac.in/wp-content/uploads ... OUCHER.pdf

Indranil

Karan M wrote: There are also reports they want the electric drives to be replaced by hydraulic units for weight reduction.

I have come across this elsewhere as well, but I don't understand it. It may be wrong reporting. But everywhere else electrical drives lower weight, price, and maintenance.

Indranil

This is what I had posted a few months back. I expect the Brahmos long (800 km) range missile to look like.
1. Nose cap on canister and not missile: Lowers cost and complexity
2. No sudden pitch right after launch: Conserves energy, lowers cost and complexity.
3. hi-hi-low trajectory

Indranil

Keep some mithai's ready. DRDO tests missiles in bunches.

Indranil

Vicky wrote: The "UT" in Astra Mk1 UT has something to do with "Telemetry". (underwhelming reveal ) - Why does UT exist?

They are refining the missile continuously. It is good. I think they are optimizing the motor for longer range and faster acceleration.

Indranil

1. Astra Mk1 is undergoing a change in propellant casting. I don't know why. 2. There is every sign the Astra Mk2 will look near identical to Astra Mk1. May have worked out how to cast the propellant with differential grain sizing. This results in a longer burn and a higher impulse period with lowe...

Indranil

^^^ +1

I think the motor diameter of Mk2 is increasing from 178mm to 190mm. Seeker, warhead and the control section remains at 178mm.

Indranil

1. Astra Mk1 is undergoing a change in propellant casting. I don't know why.
2. There is every sign the Astra Mk2 will look near identical to Astra Mk1.

Indranil

Issues are with the GSLV MkII Staged Combustion- CUS. This one is more efficient, more powerful and is one of the most powerful CUS in the world....... Mk3's CUS is to be human rated. This one will not be the most powerful, but it will be the safer one. Here also engine development can go using sta...

Indranil

IR, I am not on twitter. Would you please send our collective congratulations to him. Also if it's possible, ask him as to what the future holds for him and his colleagues. After putting together and certifying this aircraft. Because I am sure sky is the limit. I just want a glimpse of what's in st...

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