Search found 832 matches

by prasannasimha
22 Jan 2019 10:44
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3494
Views: 737707

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

JayS wrote:
prasannasimha wrote:SP14 had its maiden test flight. SP13 to follow. SP 14 flew before 13

From two different lines.


Of course. From two different lines.
by prasannasimha
20 Jan 2019 17:46
Forum: Military Issues & History Forum
Topic: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018
Replies: 3494
Views: 737707

Re: Tejas Mk.1 & Mk.1A News & Discussions: 09 February 2018

SP14 had its maiden test flight. SP13 to follow. SP 14 flew before 13
by prasannasimha
18 Jan 2019 20:55
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

STAGE 4 PS4 Height: 2.5m Diameter: 1.34 m Propellant: MMH +MON 3 Propellant mass: 1.6 t STAGE 3 HPS3 Height: 3.6m Diameter:2 m Propellant: HTPB Propellant mass: 7.65 t STAGE 2 PS2 Height: 12.8m Diameter: 2.8m Propellant: UH25 & N 2 0 4 Propellant mass: 4.1 t STAGE 1 PS1 + PSOM - XL STAGE 4 PS4 S...
by prasannasimha
15 Jan 2019 20:26
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

^ yes I put in the Sivan article for that reason. The thing was that they were planning of bagged or vertical landing for at least one stage from quite some time.(As I mentioned there were are two groups in ISRO - one for fly back first stage booster and one for vertical landing)
by prasannasimha
15 Jan 2019 18:07
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

Anthariksh blogs TSTO conceptulaization based on DrSivan' s statements
Image
by prasannasimha
15 Jan 2019 18:05
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

Recaptulating https://frontline.thehindu.com/science-and-technology/growing-wings/article8704636.ece SPACE Growing wings R. RAMACHANDRAN T.S. SUBRAMANIAN Print edition : June 24, 2016 T+ T- A.S. Kiran Kumar, Chairman, ISRO, and N. Shyam Mohan, RLV-TD Project Director, VSSC, Thiruvananthapuram. Photo...
by prasannasimha
15 Jan 2019 17:37
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

With space X doing the first orbit landing it may be worth reversing the recovery options.
Forreturn of 1st stage(probably for flight to GTO) recovery to landing site in the Andamans is being contemplated -probably we should see thr flight track to see how it could be done.
by prasannasimha
15 Jan 2019 17:34
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

The concepts described was tabled many years ago much before SpaceX (FWIW) thye had planned vertical or bagged landing of ist stage and winged landing of second stage. There ahve been two groups in ISRO - one working on winged landing and one on vertical/bagged landing and the work seems to be accel...
by prasannasimha
15 Jan 2019 01:10
Forum: Military Issues & History Forum
Topic: INS Arihant: News & Discussion
Replies: 218
Views: 45942

Re: INS Arihant: News & Discussion

Thst article presumes Arighat and Aridhaman are not operational
by prasannasimha
14 Jan 2019 12:46
Forum: Technology & Economic Forum
Topic: Indian Economy News & Discussion - Nov 27 2017
Replies: 2647
Views: 428026

Re: Indian Economy News & Discussion - Nov 27 2017

Manju, you are making posts promoting intracountry hate. I have deleted it. Repeat it again and it will result in a ban.
by prasannasimha
12 Jan 2019 11:19
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

I had sent a old NASA video on calculations of the launch window for lunar landings
by prasannasimha
12 Jan 2019 08:33
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

Being the first time they are deploying a soft lander and a rover they are repeating multiple tests as it is a one shot thing. Better safe than sorry
by prasannasimha
07 Jan 2019 07:44
Forum: Strategic Issues & International Relations Forum
Topic: Kerala Floods - Aftermath and Save Sabarimala
Replies: 2285
Views: 136771

Re: Kerala Floods - Aftermath and Save Sabarimala

2 and 3 wpuld be OK if the otgers are too. Enough indicators that it is not happening. Being civil doesnt mean getting tge srick too. Thats what is gappening in many areas in KL. Just see recordings on Twitter.
by prasannasimha
07 Jan 2019 07:35
Forum: Technology & Economic Forum
Topic: Currency Demonetisation and Future course of Indian Economy
Replies: 7851
Views: 646714

Re: Currency Demonetisation and Future course of Indian Economy

I have deleted your political statements and kept your nonpolirical one. I repeat any poltical statements will lead to abans on this thread. Simple as that. BRF has specifically removed poltical discussions after some issues. Doing it will be at your own peril. If you want to do a political discussi...
by prasannasimha
07 Jan 2019 07:31
Forum: Military Issues & History Forum
Topic: Indian Missiles News & Discussions - 17 Dec 2018
Replies: 118
Views: 36819

Re: Indian Missiles News & Discussions - 17 Dec 2018

Details of SLBM tests are often npt announced
by prasannasimha
06 Jan 2019 23:28
Forum: Military Issues & History Forum
Topic: Indian Missiles News & Discussions - 17 Dec 2018
Replies: 118
Views: 36819

Re: Indian Missiles News & Discussions - 17 Dec 2018

Any news wrt the test notified by the NOTAM for 4-6Jan ?
by prasannasimha
05 Jan 2019 21:52
Forum: Military Issues & History Forum
Topic: International Aerospace Discussion - Jan 2018
Replies: 777
Views: 94466

Re: International Aerospace Discussion - Jan 2018

can you elaborate? uncomfortable interior fittings can be surely fixed. higher noise levels? Crude fittings and the f;light was one kitchen mixer shaker. Made me really worried. It looked like a crude copy of a Boeing plane but the ride was just not comfortable. Lots of shaking etc especially when ...
by prasannasimha
05 Jan 2019 19:15
Forum: Military Issues & History Forum
Topic: International Aerospace Discussion - Jan 2018
Replies: 777
Views: 94466

Re: International Aerospace Discussion - Jan 2018

I have traveled in such planes. Honestly they are barely functional and not comfortable. They will do the job of getting from point A to B but comfort sorry that's not a part of it.
by prasannasimha
05 Jan 2019 19:05
Forum: Military Issues & History Forum
Topic: Indian Military Aviation - 21 Sept 2015
Replies: 4346
Views: 412233

Re: Indian Military Aviation - 21 Sept 2015

It was a shock to me when cycle registration and Radio registration were stopped !! The iontroduction of STD calling was something unusual and cellphones were something really very very new !!
by prasannasimha
05 Jan 2019 17:30
Forum: Strategic Issues & International Relations Forum
Topic: Kerala Floods - Aftermath and Save Sabarimala
Replies: 2285
Views: 136771

Re: Kerala Floods - Aftermath and Save Sabarimala

What Baashan ? I see a lot of disconnect here. Do something get blaned . Don't do something get blamed. Pretty illogical isn't it ? Do some thing? Can you explain what has been done? What has the BJP (including Kerala's own BJP leaders like O. Rajagopal, Sreedharan Pillai et.al) done to mitigate th...
by prasannasimha
05 Jan 2019 09:58
Forum: Strategic Issues & International Relations Forum
Topic: Kerala Floods - Aftermath and Save Sabarimala
Replies: 2285
Views: 136771

Re: Kerala Floods - Aftermath and Save Sabarimala

What Baashan ? I see a lot of disconnect here. Do something get blaned. Don't do something get blamed. Pretty illogical isn't it ?
by prasannasimha
03 Jan 2019 22:03
Forum: Strategic Issues & International Relations Forum
Topic: Kerala Floods - Aftermath and Save Sabarimala
Replies: 2285
Views: 136771

Re: Kerala Floods - Aftermath and Save Sabarimala

I will put it bluntly- in Karnataka BJP was a nonentity and people persisted for decades and now it is a significant force(though we have a habit of laways voting for the party not in power to our detriment !!). If people in KL have a local myopic view of biting the nose off to spite the face then i...
by prasannasimha
03 Jan 2019 17:23
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2429
Views: 61098

Re: Physics Discussion Thread

MOM and MAVEN and the other Mars orbiers are trying to do such data relay when outside view
by prasannasimha
03 Jan 2019 17:22
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2429
Views: 61098

Re: Physics Discussion Thread

Space internet has been a thought for decades. There were solar probee placed in pairs for this reason. Hoever the issue is not so simple for data relay as the distances are stupendous. This requires steerinb the antenna precisely gor one probe. Also data acqu8sition requires an antenna in one preci...
by prasannasimha
03 Jan 2019 17:17
Forum: Technology & Economic Forum
Topic: Physics Discussion Thread
Replies: 2429
Views: 61098

Re: Physics Discussion Thread

Please continue thus in the aerospace thread. I have already p9sted the serial images there.
by prasannasimha
02 Jan 2019 18:27
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

Another problem is the launch azimuth is narrower there ie only useful for polar launches because of Maldives (closer so booster fall out will be an issue and Sri Lanka) also the inclination to avoid Srilanka for a GTO launch will also be higher
by prasannasimha
02 Jan 2019 09:46
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

Thats one of tge reasons for SRB firing first and then the L110 firing later ( same for Titan) . Alsi the nozzle is optimized for use at and beyond that height rather than at the ground level
by prasannasimha
02 Jan 2019 09:39
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

ISRO is doing things in its own way. They onvite children to competitions and inspire them. Lets just say I know one boy who was so enthused . He had a one on one with TK Alex ghe then head of SAC after winning a rover and quiz competition that he wanted to take space rngineering and gave up an IIT ...
by prasannasimha
01 Jan 2019 23:48
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

The VSSC museum has SRE2 and the CARE module - you can see the ablative ceramic tiles that were charred and also the ones removed for testing and you can see various components that were developed and also the various pyrobolts composite tanks etc. Of course it would be smaller than that of the US e...
by prasannasimha
01 Jan 2019 21:42
Forum: Military Issues & History Forum
Topic: International Aerospace Discussion - Jan 2018
Replies: 777
Views: 94466

Re: International Aerospace Discussion - Jan 2018

The ultima Thule encounter by New Horizons is going on data acquisition is going on . So far data show that the space craft targetted UT properly. Initial pcitures will be seen around 9 PM IST and you can watch it live on NASA TV. One of my classmates worked on New Horizons craft
by prasannasimha
01 Jan 2019 17:59
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

They have a space museum in that abandoned church were Kalam-sahib and co did their early days. Also if you zoom in, a full scale mock up of a PSLV allright. https://goo.gl/maps/DDW18URBAgy But the catch is - you need approval from CISF, since it is deep inside the campus :lol: As good as not there...
by prasannasimha
01 Jan 2019 09:55
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

S Somnaths presentation said that the L40 will be the base for the ADMIRE project in one of his presentations. Prasannasimha'ji, any link to Sri Somnath's presentation? https://youtu.be/iHgn5m139uA There is a pic there of the L40 and solid rocket pic making flyback anx another with the 4 L40's sepe...
by prasannasimha
01 Jan 2019 00:05
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

S Somnaths presentation said that the L40 will be the base for the ADMIRE project in one of his presentations. If L40 is the ist stage wonder what could be config and payload mass of such a tech demonstrator.
by prasannasimha
30 Dec 2018 21:37
Forum: Military Issues & History Forum
Topic: Indian Space Program: News & Discussion - Sept 2016
Replies: 3502
Views: 651820

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

There are two competing groups/programs for reusability in ISRO - one ia the flyback landing and the other is vertical /bagged landing. There were two slides depicting it.

Go to advanced search