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by prasannasimha
19 Oct 2016 13:39
Forum: Military Issues & History Forum
Topic: Indian Nuclear Submarines -3
Replies: 1544
Views: 282933

prasannasimha

83 MW (111,305 hp) as per Wikipedia so must be 83 MWe ie ouput if I am right
by prasannasimha
17 Oct 2016 23:31
Forum: Military Issues & History Forum
Topic: Indian Nuclear Submarines -3
Replies: 1544
Views: 282933

Re: INS Arihant (ATV) News and Discussion -3

This thread need not be locked . I doubt anyone here can remotely be able to pinpoint its whereabouts
by prasannasimha
16 Oct 2016 18:55
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

India is planning to keep a telescope on the moon http://www.indialivetoday.com/isro-put-telescope-moon/46444.html Chennai,Oct15:The Indian Space Research Organisation (ISRO) is looking at the possibility of putting a telescope on moon in order to enhance its scientific observation capacity. Chairma...
by prasannasimha
15 Oct 2016 16:47
Forum: Strategic Issues & International Relations Forum
Topic: Be Indian Buy Indian
Replies: 176
Views: 25914

Re: Be Indian Buy Indian

https://twitter.com/Prasannasimha/statu ... 3907637252

Tweeted to Narendra Modi

Please start a Made in India dot-can be a small blue Ashoka Chakra that can help consumers choose Indian products Like green dot for veg
by prasannasimha
15 Oct 2016 16:42
Forum: Strategic Issues & International Relations Forum
Topic: Be Indian Buy Indian
Replies: 176
Views: 25914

Re: Be Indian Buy Indian

There should be a Made in India logo like an ashoka chakra just like the green and brown veg nonveg dot. This should be allowed only for indian prodcts with stringent punishment of violated.If that is done it becomes easier for consumers to identify a Made in India product. Incidentally I buy Khadhi...
by prasannasimha
14 Oct 2016 17:49
Forum: Military Issues & History Forum
Topic: Army strikes terror camps in PoK
Replies: 2258
Views: 333680

Re: Army strikes terror camps in PoK

^ And Bharkha Dutt a few days before was televised practically showing the route across the river > Probably a big 5th columnist. Must be kept on watch
by prasannasimha
12 Oct 2016 19:21
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ What was the day that they announced that it will be launched ?
by prasannasimha
10 Oct 2016 21:22
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

All the dates given are indeed tentative dates. They mention the expected launch date and it is not a firm date but mentions the month or quarter. They mention an actual date when the launch campaign starts.
by prasannasimha
10 Oct 2016 17:32
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

oh definitely! But ISRO sounded so confident and self assured of a by-the-year-end launch, first mentioning it 2 years ago in Dec 2014, then most recently just 2 weeks ago. If they are not certain of a specific launch date- that too after mentioning it several times- perhaps they should withhold an...
by prasannasimha
09 Oct 2016 16:39
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ what would you like Varoon a successful launcher one that blows itself up in the air ? The time line will depend on the solution of any problems noted in the previous test. The GSLV is scheduled for Dec 2017 but such a timeline can never be written in stone in a developmental flight. Remember the ...
by prasannasimha
07 Oct 2016 21:01
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

I think they want to refer to the 200 kN gas generator cryo stage of the GSLV Mk III (The Ce 7 being staged combustion.
by prasannasimha
07 Oct 2016 20:47
Forum: Military Issues & History Forum
Topic: Army strikes terror camps in PoK
Replies: 2258
Views: 333680

Re: Army strikes terror camps in PoK

Probably the next thng is to advance the LOC for every attack say by a few meters how much may depend on the mature of the terrain.
by prasannasimha
07 Oct 2016 19:06
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

http://www.thehindu.com/sci-tech/science/isro-gears-up-for-critical-crew-rescue-test/article9194536.ece ISRO gears up for critical crew rescue test S. ANANDAN The Crew Module Atmospheric Re-entry Experiment which was test-flown by the ISRO two years ago.—PHOTO: THULASI KAKKAT It will test how fast ...
by prasannasimha
06 Oct 2016 22:48
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^which is why I used the term at least 4 satellites:) Actually 3 for position on earth's surface and the 4th for added altitude information
by prasannasimha
06 Oct 2016 07:48
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ If you see the foot print you can see that virtually all old world continents are covered by at least 4 satellites all the time
by prasannasimha
05 Oct 2016 23:15
Forum: Trash Can Archive
Topic: LCA Tejas: News and Discussions
Replies: 4035
Views: 409180

Re: LCA Tejas: News and Discussions

* Bureucracy ADA wants to hire permanent staff but that doesn't occur and have to do with temp posts and people keep leaving so it becomes difficult.
by prasannasimha
02 Oct 2016 12:53
Forum: Strategic Issues & International Relations Forum
Topic: Sunni Terrorist Fragments of Unstable Pakistan-13 June,2016
Replies: 2846
Views: 405160

Re: Sunni Terrorist Fragments of Unstable Pakistan-13 June,2016

^ Actually telling that protects the captured fellow from harm. keeping everything quite allows them to do whatever with the guy.
by prasannasimha
02 Oct 2016 12:51
Forum: Technology & Economic Forum
Topic: Indian Telecom Folder
Replies: 1166
Views: 201881

Re: Indian Telecom Folder

By past precedence Reliance telecom will attract with big offers and then there will be pain. I shifted from the original reliance to airtel and BSNL and it was such a pain during the shift. I still prefer BSNL for their mobile data whatever gimmicky offers the others say - they simply do not walk t...
by prasannasimha
01 Oct 2016 08:27
Forum: Military Issues & History Forum
Topic: Army strikes terror camps in PoK
Replies: 2258
Views: 333680

Re: Army strikes terror camps in PoK

^ Why ? wasn't necessary and goal was achieved.
by prasannasimha
01 Oct 2016 08:27
Forum: Military Issues & History Forum
Topic: Army strikes terror camps in PoK
Replies: 2258
Views: 333680

Re: Army strikes terror camps in PoK

Salman Khan's and Karan Johar;s next movie may need "treatment". This may be needed to make sure all fall in line.
by prasannasimha
30 Sep 2016 09:12
Forum: Military Issues & History Forum
Topic: Army strikes terror camps in PoK
Replies: 2258
Views: 333680

Re: Army strikes terror camps in PoK

Probably they did not want to show the ops because of probable or potential quislings in our own parliament or at the worst some foolish person who may spill over some sensitive information for a sound byte. Just like the AAP fellow showed some recording in parliament these guys may do something stu...
by prasannasimha
29 Sep 2016 20:48
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ The cold flow test is already done. The hot testing is going to be done in Russia till our facility is constructed. Hot testing (If I can call it that) of individual/cluster of components have been done. The entire engine being fired is going to be done in Russia. Unlike the staged combustion engi...
by prasannasimha
29 Sep 2016 20:42
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

There will not always have a 0 angle of attack- for eg when there is a pitch or yaw. Read here . From the same article you quoted After the pitchover, the rocket's angle of attack is adjusted to zero for the remainder of its climb to orbit. During the ptich maneuver the angle of attack will not be ...
by prasannasimha
29 Sep 2016 07:28
Forum: Military Issues & History Forum
Topic: Design Your Own Space Launch vehicle
Replies: 38
Views: 5334

Re: Design Your Own Space Launch vehicle

Solid boosters burn from in to out but the grain configuration can make variable burning rates at different portions of the booster too. For eg a circular lower and star upper mandril during casting will cause the upper part to actually burn at a faster rate than lower(as an example). This is actual...
by prasannasimha
29 Sep 2016 00:08
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ ULV or the heavy launch vehicle is the goal in a series of modifications in the multistage nonrecoverable rocket path. I doubt they will totally ditch the PSLV as it is a very cost effective rocket till they get a reusable rocket system in place which is cheaper than the PSLV.
by prasannasimha
29 Sep 2016 00:04
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

There will not always have a 0 angle of attack- for eg when there is a pitch or yaw.
by prasannasimha
27 Sep 2016 20:19
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

Just to put it in perspective I know a student rocket program being done and guess the number of iterations analyzed for optimization (albeit algorithmic)- approaching 60000. It is not that simple as what some people think. There is a whole optimization study taken when using a particular configurat...
by prasannasimha
26 Sep 2016 12:56
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

prasannasimha

The circular orbits are achieved by firing at the nodes of an elliptical Al orbit of the 4th stage and any subsequent corrections.
by prasannasimha
25 Sep 2016 22:33
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

The 4th stage itself will be used to deliver the satellites in different orbits so satellite fuel usage will be less also with this the orbits will be significantly different. Firing the 4th stage at periapsis or apoapsis will allow an entirely different orbit. Imagine two elipses sharing one periap...
by prasannasimha
25 Sep 2016 16:50
Forum: Military Issues & History Forum
Topic: Design Your Own Space Launch vehicle
Replies: 38
Views: 5334

Re: Design Your Own Space Launch vehicle

Have you factored in the coasting phase when you calculated the 40 second lugging . I think you need to checkout the velocity height profile because in some of the flights they have allowed the vehicle to actually descend assisted by gravity to increase velocity during coasting followed by next stag...
by prasannasimha
25 Sep 2016 14:23
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ the shock wave sources on rocket launch are multiple and not just the nose cone slicing through the atmosphere.
by prasannasimha
25 Sep 2016 14:16
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ As far as costing is concerned this is not an accounting fudging but based on what ISRO is charging at present for commercial launches which are not subsidized but are for profit.
by prasannasimha
25 Sep 2016 09:54
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

Also another thing regarding costing when we say we can launch this or that with a more efficent rocket can you work out the cost per Kg payload for GSLV Mk3 to say an Ariane launcher delivering 4 Tons to GTO. The cost with this so called inefficent design is however 2/3 rd less than that of Ariane....
by prasannasimha
25 Sep 2016 09:43
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

Again for SRB's while they do not provide a higher specific impulse they have one great advantage and that is they ahve a high energy density so a hugher thrust and this helpsactually to keep the net size/weight/complexity paradoxically down in the dense atmospheric phase as the large fuel tanks etc...
by prasannasimha
25 Sep 2016 09:30
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

So the sonic boom signature indeed has been recorded out to a distance of 35 Kms around Pulicat lake from the launch sit as per the article posted. To quote the article The PSLV lifted-off from SHAR with the trajectory away from the line of the seismograph network. Hence we could record the boom car...
by prasannasimha
25 Sep 2016 08:19
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

prasannasimha

Let us not forget one thing about large SRB's. Earth storing and handling is very much easier allowing preproducton that can significantly ease the launch campaign. This by itself reduces costs significantly. Also in the densw atmospheric phase the high energy density provides an advantage, simplici...
by prasannasimha
25 Sep 2016 08:16
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

prasannasimha

IndraniI I think no one would say no to those discussions when attempting to be rigorous bur when it is interspersed with expletives and name calling or whatevery it just detracts. Being civil and not mocking is all that one needs to do and the same can be jolly well done and will not detract from t...
by prasannasimha
25 Sep 2016 00:20
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 4447
Views: 1107280

Re: Indian Space Programme Discussion - Sept 2016

^ Just for clarification a vertically launched rocket will not allow a sonic boom to pass over a ground based observer as the shock wave cone will not be in that direction but the boom will be heard if it is appropriately inclined but if the rocket yaws or pitches setting up some oblique shock waves...

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