Search found 7134 matches

by Indranil
23 Apr 2019 11:55
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

The canard does come in the way, but in a sector where no pilot sees. So the canard on the MWF would hamper vision no worse or better than a Rafale/gripen.

But compared to a mk1, the visibility should be actually better, given that the wings are set further behind.
by Indranil
23 Apr 2019 02:06
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

ShivS, Nobody is happy with the price quoted by HAL for Mk1A. There is a committee constituted to look into the price rise. But your post is pretty shallow. Do you know the breakup of the cost of Mk1A? Why should an Indian produced Gripen A/B-equivalent cost the same as a JF-17? Also, do you know th...
by Indranil
22 Apr 2019 22:57
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 06 March 2019
Replies: 128
Views: 19878

Re: Indian Military Aviation - 06 March 2019

Paging Indranil ji, The recent discussions of IJT has brought back the memories of the discussion/post of the old design concept of IJT. In your opinion it was a better design but HAL fell back to Kiran based air intakes due to previous experience. https://encrypted-tbn0.gstatic.com/images?q=tbn%3A...
by Indranil
18 Apr 2019 04:14
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Posting this video here for viewpoint purposes KYRHmEF1Azo highlights: ⋅  Most debris will re-enter in 1-2 months. small numbers may stay for 1-2 years. ⋅  Impact vector was downward and not ascending as some 'analysts' have predicted. ⋅  Hypervelocity impact. ⋅&n...
by Indranil
17 Apr 2019 22:26
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 06 March 2019
Replies: 128
Views: 19878

Re: Indian Military Aviation - 06 March 2019

Just read on twitter that IJT was rest flown after a long time. Does anyone have more information? https://twitter.com/zone5aviation/status/1118425999073521664?s=19 What is the Significance of these trainers, do pilots train on IJT before moving to AJT like Hawk? Is like like Pilatus then IJT then ...
by Indranil
16 Apr 2019 23:55
Forum: Military Issues & History Forum
Topic: Indian Air Force News & Discussion - 15 Dec 2016
Replies: 2600
Views: 516512

Re: Indian Air Force News & Discussion - 15 Dec 2016

PAF is getting whatever it can lay its hands on. PLAAF, the same. We are waiting for the latest and greatest.
by Indranil
16 Apr 2019 03:01
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3735
Views: 724333

Re: Indian Space Program: News & Discussion - Sept 2016

Gagan wrote:One reason why Ariane space launches look so good is that the Cryos are not very smokey, specially when they are high up.

The CRyos are not smokey at all, but Ariane uses huge solid boosters, even bigger than the ones on GSLV Mk3.
by Indranil
16 Apr 2019 02:53
Forum: Military Issues & History Forum
Topic: Indian Missiles News & Discussions - 17 Dec 2018
Replies: 726
Views: 184370

Re: Indian Missiles News & Discussions - 17 Dec 2018

I loved it! It is not a joke on the missile men. It is a joke on the eggspurts!
by Indranil
15 Apr 2019 23:43
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

Wow! Thank you! Rarely, do I come across something so new about the Tejas.
by Indranil
15 Apr 2019 21:55
Forum: Military Issues & History Forum
Topic: Indian Missiles News & Discussions - 17 Dec 2018
Replies: 726
Views: 184370

Re: Indian Missiles News & Discussions - 17 Dec 2018

The nose cap has been like that for the last few tests. I remember talking to Nilesh regarding the same. It has not been as rounded as on the first test. Raveen sir, this nose cap is not jettisoned. The nose is supposed to be a radome. However, I am not sure that the current (orange) one is! Current...
by Indranil
15 Apr 2019 05:09
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Baba, you are not thinking like a projectile.

You can see whichever direction you want, your velocity vector is not going to change at the rate of gravity at that point. And velocity vector is the determining factor, not your orientation as you hit it.
by Indranil
14 Apr 2019 21:00
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3735
Views: 724333

Re: Indian Space Program: News & Discussion - Sept 2016

Only the lander engineering test model "hurt". Not Vikram itself.
by Indranil
14 Apr 2019 20:59
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Interesting. https://twitter.com/Marco_Langbroek/status/1116147781444546561 Marco Langboek has got it completely wrong. His last reference is a IR photo of the target satellite taken from ASAT which is at a distance of 0.84 Km. That is 840 meters. All it requires (I think, thumb rule) is 0.03 degre...
by Indranil
14 Apr 2019 10:30
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Haridasji, My interest in rocket engines is very recent and my knowledge is nascent. But I love it. It so pure and complex at the same time. Please keep the gyan coming. Regarding correcting people on the internet. It is difficult to show a haji cat his nonpious past. So, I don't spend energy. Actua...
by Indranil
13 Apr 2019 00:45
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Karan, Why care? If there is an ASAT test, there would be debris. Actually, head on collision creates the lowest chances of debris to reach higher apogee orbits. But, hitting the satellite on the way down would create the most atmosphere intersecting debris (if I am not wrong). Most debris from the ...
by Indranil
12 Apr 2019 11:33
Forum: Military Issues & History Forum
Topic: Airborne Early Warning & Control: News & Discussion
Replies: 2851
Views: 532907

Re: Airborne Early Warning & Control: News & Discussion

Which SAM can reach 10 km but not 15 km altitude?

You would have much better arguments if you say a turbofan based aircraft has much lower time to altitude and response time.
by Indranil
12 Apr 2019 11:23
Forum: Military Issues & History Forum
Topic: Airborne Early Warning & Control: News & Discussion
Replies: 2851
Views: 532907

Re: Airborne Early Warning & Control: News & Discussion

None of that make it out of reach of SAMs or AAMs. A plane capable of of doing 2G turns is mince meat for AAM. The only protection is the protection suite which would be the same on either platforms.
by Indranil
12 Apr 2019 11:14
Forum: Military Issues & History Forum
Topic: Airborne Early Warning & Control: News & Discussion
Replies: 2851
Views: 532907

Re: Airborne Early Warning & Control: News & Discussion

Not for AEW. We don't necessarily need cheap, but something that adds a lot of value to reduce the fog of the battlefield, and can survive if it ventures into hostile airspace. I agree that saving money is not the primary criterion. But don't understand how a C295 or modified business jet is more s...
by Indranil
12 Apr 2019 08:07
Forum: Military Issues & History Forum
Topic: Airborne Early Warning & Control: News & Discussion
Replies: 2851
Views: 532907

Re: Airborne Early Warning & Control: News & Discussion

Reengine those 748 and recreate a modern Airavat.

Those airframes will get utilized and the product will be cheap.
by Indranil
11 Apr 2019 23:16
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Interesting. https://twitter.com/Marco_Langbroek/status/1116147781444546561 In this thread, a summary of my OSINT analysis of a DRDO video of the Mar 27 Indian #ASAT test. I will show that the kill vehicle hit #Microsat-r in an upwards direction, not "head on" as the DRDO claims. The India...
by Indranil
11 Apr 2019 02:52
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Amber ji, Here’s how my high school brain worked it out. To stop mother earth from coming in the way, let us replace it with a point of equal mass at the center of earth. Let's use a stick of negligible width to stand on to throw the ball. The other end of the stick is fixed at earths center and the...
by Indranil
10 Apr 2019 20:14
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

I'm very confused onlee. If a plane takes off from Mumbai towards noo York, but goes slowly, the plane doesn't have to travel all the way. Noo York will come to the plane. But, this is not possible. So, how will a ball going straight up fall 1 km away? Very confused... PS: Physics wasn't an area of...
by Indranil
10 Apr 2019 11:54
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Amber ji, It's a good question and I don't mind it being in this thread. It is related to understanding suborbital and orbital paths and hence very much related to ASAT and a satellite. [[ OT ]] However, I am not going to answer your question. Let others solve it while I share a related anecdote. Ar...
by Indranil
10 Apr 2019 03:28
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

If you use a DEW, all you need to do is make the satellite in operational. Why spend orders of magnitude higher energy to blow it up?
by Indranil
10 Apr 2019 00:19
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Even more unlikely. China has a fairly advanced DEW program. But if you use a DEW, you don't blow up a satellite.
by Indranil
10 Apr 2019 00:02
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

UB, You brought out a point that I have been wanting to ask for a while now. What is the meaning of co-located orbits? How can two objects co-located in the same orbit ever come to touch each other? Intersecting orbits, I get it. Could this be a way to hit satellites in much higher orbits. Basically...
by Indranil
09 Apr 2019 23:56
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

If anything, this proves that even if RISAT was lost to an ASAT, it was not because of surgical strikes. It takes a little preparation to launch an ASAT. The satellite has to be at the right place at the right time. Risat-1 had a 12 day revisit cycle. So, right after surgical strike would be a good...
by Indranil
09 Apr 2019 10:38
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

If anything, this proves that even if RISAT was lost to an ASAT, it was not because of surgical strikes. It takes a little preparation to launch an ASAT. The satellite has to be at the right place at the right time.
by Indranil
09 Apr 2019 04:42
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

I agree with Dr. Reddy that this kind of test cannot be hidden. So a press release would have been great. There was showmanship by Modi, no doubt. But give it to him. Elections are upon us. Other leaders have done worse.
by Indranil
08 Apr 2019 01:54
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

I once asked a panwalla the difference in RCS between LCA and Mig21. He laughed, spit his paan to one side and focused on the order.

Khan sahab, thank you for sharing your experience in the marine environment.
by Indranil
07 Apr 2019 02:56
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

I'm not saying it's restricted to 6g. But if there's a difference between FOC and IOC limits then IAF will wait till these limits are removed. Intact, I think that the reason for sending SP-9 and 10 (as opposed to SP - 1 to 8 ) may be because it's very likely that each new SP aircraft would have se...
by Indranil
07 Apr 2019 02:50
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

Sirs what are the time instants for the start/stop of negative g turn The inverted part at the top of the square loop is -1 G. The bottom corner while turning from vertical to horizontal is 8G. The whole outside turn is -3.5 G. Like I said before, the LCA display is for the educated in this field. ...
by Indranil
07 Apr 2019 02:42
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

I am going to plug my article in here. But I Am not feeling any shame in this. I had written this with no insider knowledge. Saurav Jha did provide some quality inputs about the KKV. Every point we made has turned out to be correct. Feeling proud. All You Need To Know About The PDV MK-II: India’s Sa...
by Indranil
06 Apr 2019 09:41
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

Amber G, Thank you for writing such great posts every now and then. You asked if there is more interest, you will write more. Let me register my interest. Please keep these coming. Physics and math are so beautiful if taught properly. It is a pity how science is taught in schools. To this day, most ...
by Indranil
06 Apr 2019 02:09
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

What a wonderful article. Just one nitpick. What was flown at LIMA was an IOC aircraft. One couldn't do 21 second loops with 6 G restriction. As I have said earlier, and I repeat it. The aircraft has been flown at 8.5Gs a few times now. It is not a priority item, but it will eventually get cleared f...
by Indranil
06 Apr 2019 00:53
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

Kartik wrote:The same video also has the minimum radius turn from 6:19 to 6:40 for a 21 second 360 degree turn. Works out to a similar 17.14 deg/s STR.

That's the average turn rate, between STR and ITR (closer to STR).
by Indranil
04 Apr 2019 19:34
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019
Replies: 608
Views: 140109

Re: Tejas Mk.1 & Mk.1A: News & Discussions: 23 February 2019

Iyerval seems to know as much about Tejas as his rossogullas! The track record of Anil Ambani in learning and succeeding: Another big rossogulla!
by Indranil
04 Apr 2019 03:40
Forum: Military Issues & History Forum
Topic: Indian ASAT Test
Replies: 855
Views: 95510

Re: Indian ASAT Test

JTull wrote:Why do they need an SSLV for quick replacement satellites when PDV Mk-II can deliver a KKV to 1000kms?

The SSLV doesn't deliver KKV to 1000kms. It delivers KKV to 110 kms at suborbital velocity. AFAIK, Agni V can launch 200-300 kgs to 300 km circular orbit.

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