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by Dasari
12 Sep 2019 06:07
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Do we have picture of Vikram on the moon surface? ISRO officially announced that Vikram is in one piece, not disintegrated, and landed on its side. That rules out any explosion or rapid acceleration. How do we explain this?
by Dasari
10 Sep 2019 13:34
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Since it is off by 500m, it certainly has horizontal velocity when it hit the moon surface. So is it possible that it landed on its 4 legs but the momentum pushed it towards its side?
by Dasari
08 Sep 2019 23:18
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

100 m/ sec 2.1km to go.. fast braking period.. nothing heard. That is pretty fast to land w/ balloons(if) and cushions. I thought 59.8 m/sec. But it is very fast. Even if it is free fall from there the terminal velocity at impact would be like sqrt ( 2100*2*1.62 + 59.8**2) = 102m/sec or 360km/hr. O...
by Dasari
08 Sep 2019 10:15
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Amber G, I know we need a min of Three Geosynchronous satellites to cover earth. But to cover moon how many we need (I mean receive signals from any spot on the farside of the moon and retransmit them uniterrupptedly)? Only two? Is there something called luno-synchronous orbit? Thanks. Geometricall...
by Dasari
07 Sep 2019 12:20
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Had we fired those thrust engines few more seconds and reduced the speed even more in the rough braking zone, would that have saved the lander? So many questions of ‘what if’ go by mind. Now, I’m very devastated. Hope there are some better news tomorrow or an explanation that is more comforting.
by Dasari
07 Sep 2019 12:01
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

How soon can Orbiter take detailed picture of this area? If the lander crashed at speeds > 200m/sec, it must have raked huge dust cloud up and most of the lander probably buried under dust. The most heart breaking thing in this is that our manned mission to Moon will not happen in next 10 years.
by Dasari
07 Sep 2019 07:19
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Are you saying it didn't have that much fuel?. How does it waste it when its purpose was getting over in few more minutes? Touch down at 10m/sec?. Are you crazy? Doesn't matter what the gravity is. When we say 10m/sec, we mean 10m/sec. That would be hard crash. Last 10 meters, the actual plan was t...
by Dasari
07 Sep 2019 07:15
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Even assuming that the last communication was at 300m (based on the last point on graph), the concern we have is that the rate of descent from 2.1km to 300m was too fast for the craft to survive. As per ISRO's plan from 500m altitude the decent has to be 1m/sec. Leaving aside the path between 2.1km...
by Dasari
07 Sep 2019 06:47
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

1 m/s descent speed from 500m is way too low: waste of rocket fuel. It was going to touch down at somewhere under 10m/s or so IIRC. Remember gravity is only 1/6g so impact is not that great. Are you saying it didn't have that much fuel?. How does it waste it when its purpose was getting over in few...
by Dasari
07 Sep 2019 06:28
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Clearly communication was not lost at 2.1 km. The track of the lander was broadcast live upto about 300 m above the surface. There is public domain data of altitude and range well below 2.1 km altitude in the video linked by gagan. Even assuming that the last communication was at 300m (based on the...
by Dasari
07 Sep 2019 05:27
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Isro lost contact with Vikram when it was just 2km from lunar surface This heading could be misleading. Did communication with Vikram lost before crash or after crash? The heading implies the communication was lost before the crash. Why? An explosion? The most plausible explanation is that it alrea...
by Dasari
07 Sep 2019 05:10
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Based on above chart, the craft was descending too fast. Unless the horizontal speed got reduced by the engines, the graph clearly shows the craft was gathering vertical(downward) acceleration.
by Dasari
07 Sep 2019 04:53
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

If it is terrain mapping software issue, it would have landed in some ditch or something along those lines which would not have been this bad. According to ISRO that terrain mapping comes into play at 500m altitude when craft was descending at a velocity of 1m/second with both thrust engines slowing...
by Dasari
07 Sep 2019 04:12
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

If it was inverted or horizontal, and its engines burning, that will cause deviation from the flight path laterally, which possibly seems to have happened. Also descent velocity which was coming down, will start to now increase I agree. Then the crash would have happened within 20 seconds. By the t...
by Dasari
07 Sep 2019 04:08
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Trusting my eyesight and memory, the last I saw the telemetry data from the screen : Horizontal velocity 48.1 m/s Vertical velocity 59.8 m/s Downrange distance: 1.09 km Earth communication: OFF That's exactly what I recollect. Even if the engines shut off after this, a free fall from 2.1km would gi...
by Dasari
07 Sep 2019 03:34
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

Vikram cannot communicate to ground station. It can only talk to Orbiter. If the Orbiter is on the other end, can Vikram communicate to it? Don't we need to wait for it circle back.
by Dasari
07 Sep 2019 03:31
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

SaiK wrote:The key data we have now is it lost comms ar 2.7km altitude
I think 2.1km.That is what the chairman said.
by Dasari
07 Sep 2019 03:19
Forum: Military Issues & History Forum
Topic: Chandrayan-2 Mission
Replies: 2274
Views: 335910

Re: Chandrayan-2 Mission

How often Orbiter passes this site? It may not find anything until the dust settles.
by Dasari
23 May 2019 12:26
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

TDP leading in only constituency giving YSRCP massive 24 seats. That is pathetic.
by Dasari
23 May 2019 12:09
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

BJD performance is very impressive. It appears Modi and BJP had their own exit polls which are very accurate. It explains why he reached out to Naveen Patnaik in a very cordial way in the middle of elections.
by Dasari
23 May 2019 12:01
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

Sachin wrote:
Sumeet wrote:TDP wiped out in AP

So Chandranna can dress up like an Arab (like what he did in Iftaar parties) and then move to the Gelf.

It was a self destruction for unknown reason. I don’t buy any of the reasons speculated other than BJP strongly objecting to dynasty that he was trying to create.
by Dasari
23 May 2019 10:51
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

As per TOI Chandra Babu Naidu is lagging for the first time since 1983.
by Dasari
23 May 2019 10:34
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

BJP decimating Congress in Rajasthan, Madhya Pradesh and Chatishgarh. What was the assembly results all about? A mirage.
by Dasari
23 May 2019 10:28
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

YSRCP with 20 leading is the 3rd largest party after BJP(247), Congress(69).
by Dasari
23 May 2019 10:25
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

tushar_m wrote:Smriti Irani leading by 15000 votes :rotfl: :rotfl: :rotfl: :rotfl:


If she wins, this will be the biggest headline tomorrow. Pragya’s win will come second. This could lead to calls for #congressmuktbharat
by Dasari
23 May 2019 10:13
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

asbchakri wrote:rNDTV saying congress doubled their seats they will be a strong opposition :rotfl: :rotfl:

They are not doing good anywhere except Punjab and Kerala. Where are they getting 80+ seats?
by Dasari
23 May 2019 10:04
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

Telugu Desam got decimated in AP. This could be worst than 2004 defeat for him. What a fall?
by Dasari
23 May 2019 10:00
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

abhijitm wrote:
Dasari wrote:How is Modi doing from Varanasi?

Yeh kya puchh rahe ho saar :D
You should ask if rahul winning or losing

Well Eenadu inspite off showing 287 for BJP put that sideline. Now they say he is leading. Very shocking at some point he was behind. But that is Eenadu in shock I guess.
by Dasari
23 May 2019 09:41
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

AIADMK decimated in TN. This is where NDA lost big early lead.
by Dasari
23 May 2019 09:26
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

Two parallel universes going on here at BRF :-? . In one, BJP is down from last time, UPA putting up a stiff fight. In the other, it looks like a runaway for BJP. WTH? Republic is addicting to the confusion. Don’t know what they are trying to convey between 2014 and 2019. Trying to copy US election...
by Dasari
23 May 2019 09:19
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

UlanBatori wrote:No 2/3 majority! :((

Only eenadu showing 202/61/41
by Dasari
23 May 2019 09:12
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

Looks like Kerala and West Bengal are going traditional way. UP is very critical for BJP.
by Dasari
23 May 2019 09:08
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

West Bengal is surprising. Early trends show no surge for BJP.
by Dasari
23 May 2019 08:55
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

First 30-60 min counting is all postal ballots.
by Dasari
23 May 2019 08:45
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections : Results Discussion
Replies: 2982
Views: 188267

Re: 2019 General Elections News and Discussion

Nihat wrote:Where is ndtv getting is updates. Already showing nda at 116.

Are they running their own anti jinx
Like they did Karnataka assembly elections.
by Dasari
15 May 2019 11:07
Forum: Strategic Issues & International Relations Forum
Topic: 2019 General Elections News and Discussion
Replies: 6200
Views: 660204

Re: 2019 General Elections News and Discussion

As per the latest lobbying by KCR and Stalin, it seems that they are predicting Congress will not cross 100 seats and rest of the regional parties can get 172+. How does this math work? Even in the best case scenario, with big wins by TMC and SP+BSP, they may fall short by 10 seats. Where will they ...
by Dasari
02 Mar 2017 10:18
Forum: Technology & Economic Forum
Topic: Currency Demonetisation and Future course of Indian Economy
Replies: 7872
Views: 874624

Re: Currency Demonetisation and Future course of Indian Economy

Basically RBI and Govt are determined to push cashless transactions. These measures go a long way. My current work with Indian banks tells me they are investing a lot on systems development to push digital transactions. Bharat QR, a collaboration between all major card networks, is demonstration of ...

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