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PostPosted: 04 Mar 2013 18:13 
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Deccan chronicle :

Desi engine to power GSLV
DC | N. Arun Kumar | 22nd Feb 2013

S. Ramakrishnan.
Chennai: The Indian Space Research Organisation (Isro) has plans to launch GSLV with its indigenous cryogenic engine in May this year.

Speaking to Deccan Chronicle on the sidelines of the national propulsion conference at IIT Madras on Thursday, S. Ramakrishnan, director, Vikram Sarabhai Space Centre (VSSC), said Isro had done extensive review of what went wrong in the cryogenic stage in the Geo Synchronous Launch Vehicle (GSLV). “We also did a detailed analysis of the booster pump which failed during the mission”, he said.

Pointing out that Isro had already conducted one of the crucial tests at the Liquid Propulsion Systems Centre at Mahendragiri, Ramakrishnan said they would soon do the high altitude test in vacuum to check the engine’s stability in upper space.

“Once this test is over we will integrate the cryogenic stage in GSLV rocket for launch in May this year, which will carry one of GSATs, India’s advanced communication satellite. Now we have addressed all issues, including the failed booster pump, and we are certain that we will have a successful mission in May”, he added.

Listing out launches to be made by Isro this year, the VSSC director said PSLV would soon place SPOT 7 satellite in orbit after which there would be couple of launches with foreign satellites.
Ramakrishnan noted that India would demonstrate its technology in re-entry launch vehicles segment. “Every country is doing re-entry launch vehicles as a demonstration vehicles. We have been working re-entry launch vehicles technology. Currently we have a small vehicle. We will attempt for a bigger one in one year”, he said.

Saraswat: India’s tech gap with other countries widening

Scientific advisor to the defence minister and DRDO’s director general V.K. Saraswat on Thursday lamented that India had to depend mostly on foreign nations for technology and the ap between India and other developed nations had widened in the recent past.

Delivering the inaugural address at the national propulsion conference at Indian Institute of Technology (IIT), Madras, Dr Saraswat said even though India had made greater advancements in technology based on solid and liquid rocket propulsion it needs to develop a lot in tactical missile propulsion system.

“The present state of engine technology in our country is not up to the mark and the aerospace industry in our country is at crossroads. We have achieved partial success with Kaveri engine flight tested in flying test bed abroad”, he said.

Raising concern over the dependence on foreign technology in aircraft, both defence and civilian, Dr Saraswat said the import cost of technology would cripple national economy and endanger national security, if the country’s scientists didn’t’ develop indigenous technology.

“We don’t have state-of-the-art indigenous system worth mentioning. Even simple fuel injection systems are not made on par with international standards”, he added.
Dr Saraswat pointed out that Indian war tanks had no engine manufactured in India and the defence forces had to rely on foreign technology for it.


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PostPosted: 04 Mar 2013 18:17 
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does the H2 family of japan use cryogenic engines? did mitsubishi develop it on their own or obtained help from US?
http://en.wikipedia.org/wiki/H-IIB

its size and payload is similar to what the GSLV mk3+ hopes to be... which means they are already far ahead. as unfortunately is Cheen


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PostPosted: 04 Mar 2013 19:57 
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http://www.sac.gov.in/SACSITE/IRNSS-1A.html

Quote:
The design of the payload makes the IRNSS system inter-operable and compatible with GPS and Galileo.


Not with GLONASS?


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PostPosted: 04 Mar 2013 21:57 
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AbhiJ wrote:
http://www.sac.gov.in/SACSITE/IRNSS-1A.html

Quote:
The design of the payload makes the IRNSS system inter-operable and compatible with GPS and Galileo.


What does that even mean ??? IRNSS signals can be received by GPS or Galileo based devices or what ???


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PostPosted: 04 Mar 2013 22:25 
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If I am not wrong there was some talk of making GLONASS signals compatible with GPS/Galileo, basically bring all to same type of phase shift keying. Dint materialize, if that had happened IRNSS would have been compatible with Glonass. We anyway partly "operate" GLONASS and inter operability with it would have been redundant, to go with GPS/Galileo was a good move, more options open to us.


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PostPosted: 04 Mar 2013 22:34 
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If you think of the multitude of GPS compatible devices available for civilian use, it makes sense to use the GPS format. The G3O module will read all formats anyway.


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PostPosted: 06 Mar 2013 00:15 
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We are way behind as per ISROs own schedule in launching geo stationary satellites vikaram Sarabhai projections were by 1980s we would have launch vehicle to do put insat class into orbit.

We missed the bus by going liquid O and Liquid H instead of kerosene route

Quote:

The engines are high pressure, regeneratively cooled staged combustion cycle bipropellant rocket engines, and use oxygen-rich preburners to drive the turbopumps. These kinds of burners are highly unusual, since their hot, oxygen-rich exhaust tends to attack metal, causing burn-through failures. The Soviets, however, perfected the metallurgy behind this method. The nozzle was constructed from corrugated metal, brazed to an outer and inner lining, giving a simple, light but strong structure. In addition, since the NK-33 uses LOX and kerosene, which have similar densities, a single rotating shaft could be used for both turbopumps.[3] Given its longer, heavier nozzle, the NK-43 ratio in vacuo is slightly heavier with a thrust-to-weight ratio of about 120:1.[4]
The oxygen-rich technology lives on in the RD-170/-171 engines, and their RD-180 and recently developed RD-191 derivatives.



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PostPosted: 06 Mar 2013 01:00 
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pentaiah wrote:
We are way behind as per ISROs own schedule in launching geo stationary satellites vikaram Sarabhai projections were by 1980s we would have launch vehicle to do put insat class into orbit.

We missed the bus by going liquid O and Liquid H instead of kerosene route

This is the most successful sabotage against a large country by the western nations in the lsat 40 years.
By using tech regimes and denials and outright blocking of info and hi tech they have reduced the capablity of a large nation.


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PostPosted: 06 Mar 2013 16:03 
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correct it really delayed our geo synchronous program but the problem was not so much at making the engine rather at the cryogenic support technology which we had no experience but today most of it have been developed and perfected and hopefully the few bottlenecks will be cleared by this year end .


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PostPosted: 06 Mar 2013 16:07 
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mk 2 is upgraded CAB 12 mk3 is fully indigenous but same testing and validation technology will be used .hence importance of mk 2


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PostPosted: 06 Mar 2013 17:42 
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Right. GSLV Mk2 will validate cryogenic technology. But Mk2's future is bleak as its payload capacity is limited. Mk3 will be the next workhorse after PSLV, used for 4-5 ton class INSATs, human spaceflights etc. Someone here had mentioned that once the semi cryo tech is mastered, the first stage Mk3 consisting of two vikas engines will be replaced with a single 2MN semi cryo engine. That will increase the payload of Mk3 and make it the work-mule of ISRO.


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PostPosted: 06 Mar 2013 19:38 
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It is already March. When will they test the GSLV MK2 Cryogenic Engine in higher altitude? I do not think it is possible to test and then study the parameters and finally check a new engine for real flight, integrate on GSLV and launch with in 3 months.

ISRO is lieing as usual. And this time anyone can understand that it is impossibvle to fly the GSLV by May. I think, it will be by July or August that ISRO can launch GSLV MK2 if everything goes successfully. Else..another 3-4 years. Radakrishnana had said on the occassion of the last failure that they will comeback with in a year. He is not able to comeback after 3 years.


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PostPosted: 06 Mar 2013 19:45 
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Does anyone know how long it took the Chinese to develop the cryogenic technology, and what sort of assistance they had from the Russians? And how it compares with Indian efforts? Of course, comparisons between China and India are not legit, as someone pointed out, because of the immense resources the Chinese can infuse into a 'prestige' project like this, without any questioning, opposition or accountability. But it would be nice to see a comparison!


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PostPosted: 06 Mar 2013 21:23 
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There has been enormous amounts of tech transfer from Russia to China. Rumor has it the ESA may help China build a new space station as well. Anyway almost all of China's current space program is based upon Russian technology. Right down to their astronauts(taikanauts?) space suits. Whoop tee do.


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PostPosted: 06 Mar 2013 23:11 
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ISRO plans a new high-resolution earth satellite
Quote:
The Indian Space Research Organisation is to build a remote sensing satellite, Cartosat-3, capable of taking images of the earth with a resolution of 0.25 metres.
Quote:
In the ‘Notes on Demands for Grants, 2013-2014’ from the Department of Space, which forms part of the budget documents presented to Parliament recently, Cartosat-3 figures as a separate item with an allocation of Rs. 10 crores. “Cartosat-3 is an advanced remote sensing satellite with enhanced resolution of 0.25 metre for cartographic applications and high-resolution mapping,” the document said.


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PostPosted: 07 Mar 2013 00:13 
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But will ISRO be allowe to make these 0.25m resolution images public?


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PostPosted: 07 Mar 2013 04:27 
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[quote="TSJones"]There has been enormous amounts of tech transfer from Russia to China. Rumor has it the ESA may help China build a new space station as well.

Thanks. And to the other issue about ISRO's launch dates, why are they almost always so far off? Why not instead say something like "It will be launched anytime in the next 6 months to one year" rather than announcing an Aug, followed by a Dec, then a Feb, a March, and now a May mission date? Don't get peoples' hopes up, there are serious fans out there who eagerly follow these statements. It is safe to say that the Nov launch date for the Mars mission will be pretty accurate, because of astronomical factors i.e position of the planet. But that seems to be an exception.


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PostPosted: 07 Mar 2013 07:56 
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PostPosted: 07 Mar 2013 10:12 
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{deleted}


Last edited by Suraj on 07 Mar 2013 22:52, edited 1 time in total.
Along with previous post


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PostPosted: 07 Mar 2013 11:18 
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I dont understand why chinese posters are in this forum
Country run by military pretending to be a normal


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PostPosted: 07 Mar 2013 12:00 
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Why are we discussing Chinese space program here?


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PostPosted: 07 Mar 2013 13:59 
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From ISRO FB page

Three big missions this year...

PSLV C22 with IRNSS 1 - the first navigation satellite in the Indian Regional Navigation Satellite System (IRNSS) scheduled to lift in May, 2013.

GSLV D5 with the India make cryogenic stage, lift off from the second launchpad in Sriharikota the same month.

And another PSLV will lift off with the Mars mission in October, 2013.


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PostPosted: 07 Mar 2013 15:10 
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wasu wrote:
From ISRO FB page

Three big missions this year...

PSLV C22 with IRNSS 1 - the first navigation satellite in the Indian Regional Navigation Satellite System (IRNSS) scheduled to lift in May, 2013.

GSLV D5 with the India make cryogenic stage, lift off from the second launchpad in Sriharikota the same month.

And another PSLV will lift off with the Mars mission in October, 2013.


It is highly unlikely that ISRO will do 2 launches in one month. They require a minimum of 6-8 weeks between launches. On another topic does anyone know the progress of semi-cryo engine development?


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PostPosted: 07 Mar 2013 15:23 
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^^^

ISRO has not reached that 'advanced' level so as to appear on Facebook. ( Dumb Railways have their facebook a/c ).

There are 3/4 Facebook spam pages which are utilizing ISRO logo.

ISRO has not bothered to reply whether they have official Facebook page. This in spite of my mentioning in my mail that I have spent nearly 35 years in ISRO.

Do they read mails?


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PostPosted: 07 Mar 2013 15:32 
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^^^ Once I sent a email to incorporate a disc with names on exo planet missions like NASA does. never got a reply.
High time PSLV is renamed to something more meaningful. Its a showpiece of Indian aerospace engg and has gone well beyond and will go further than the polar orbit as its name suggests.


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PostPosted: 07 Mar 2013 15:45 
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Salvi, FB page looks official. Has the contact info of dir. ppr. You should send him mail.


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PostPosted: 07 Mar 2013 15:49 
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KrishC wrote:
It is highly unlikely that ISRO will do 2 launches in one month. They require a minimum of 6-8 weeks between launches. On another topic does anyone know the progress of semi-cryo engine development?

They do have two launch pad so perhaps it can be done...


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PostPosted: 07 Mar 2013 15:53 
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^^^
Pl give link of FB page.
Thanks.

@ arvin
Yes PSLV has launched Geo-sync as well as Moon mission and as such the name POLAR is very misleading.


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PostPosted: 07 Mar 2013 16:03 
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http://www.facebook.com/isro.org
http://www.facebook.com/isro.org/info


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PostPosted: 07 Mar 2013 19:41 
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There are hints that the PSLV-HP will be used to launch the IRNSS.


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PostPosted: 07 Mar 2013 20:37 
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Last edited by Suraj on 07 Mar 2013 22:52, edited 1 time in total.
Thread cleanup


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PostPosted: 07 Mar 2013 21:40 
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wasu wrote:
http://www.facebook.com/isro.org
http://www.facebook.com/isro.org/info

Thanks Wasu.

Shot a mail to him .. let's c.


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PostPosted: 07 Mar 2013 22:15 
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Chinese space program is simply copied and helped by Russians after soviet union collapsed. Not sure why people are discussing it. thei moon mission was a joke compared to CY-1 and quality and life of satellites such that ESA or european companies won't touch it with a proverbial 1000 ft pole.


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PostPosted: 08 Mar 2013 13:29 
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pankajs wrote:
KrishC wrote:
It is highly unlikely that ISRO will do 2 launches in one month. They require a minimum of 6-8 weeks between launches. On another topic does anyone know the progress of semi-cryo engine development?

They do have two launch pad so perhaps it can be done...


Yes but both launch pads have never been used at the same time


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PostPosted: 08 Mar 2013 21:52 
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pankajs wrote:
ISRO plans a new high-resolution earth satellite
Quote:
The Indian Space Research Organisation is to build a remote sensing satellite, Cartosat-3, capable of taking images of the earth with a resolution of 0.25 metres.
Quote:
In the ‘Notes on Demands for Grants, 2013-2014’ from the Department of Space, which forms part of the budget documents presented to Parliament recently, Cartosat-3 figures as a separate item with an allocation of Rs. 10 crores. “Cartosat-3 is an advanced remote sensing satellite with enhanced resolution of 0.25 metre for cartographic applications and high-resolution mapping,” the document said.


Should take tech from RISAT and have all day night capability. It should be disguised as civilian satellite but be put to use for military applications when in need.

All Earth Observation satellites should do the same.


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PostPosted: 08 Mar 2013 23:32 
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Indian Entry For Google's Moon Rover Challenge

Team Indus' mission profile:
Operator
Axiom Research Labs

Registered Team

Team Indus, a Google Lunar X Prize team

Mission type
Lunar Lander with multiple Rovers

Proposed Launch date
Sometime in 2014

Proposed trajectory
Launch - Coast - Burn
Direct Lunar Descent

Launch vehicle
PSLV operated by ISRO (proposed)

Launch site
SDSC, Sriharikota (proposed)

Mission duration
30 earth days (planned)

Orbit (LEO)
780-800km
Near circular equatorial orbit

Mass at launch
~ 900kgs



Total Lunar Payload mass
~ 40kgs


http://www.youtube.com/watch?feature=pl ... PdZmkl9XzQ
Rahul Narayan, Team Lead

Serial entrepreneur with over 15 years of experience of creating businesses & taking them to the next level. He has worked in various management roles for Technology startup ventures and been instrumental in creating growth strategies, driving innovation, leading marketing initiatives and more.

Recently though, the space enthusiast in him has taken over and he is now responsible for keeping the Team Indus flock together, working out the big moving pieces for the next Moonshot.

Sameer Joshi, Founding Member

Sameer is a former Indian Air Force Fighter Pilot, a trained paratrooper and a huge aviation enthusiast. He has done the basic and advanced electronic warfare courses from the electronic warfare school, IAF, which has added to his expertise of aviation avionics and other myriad aviation and space related subjects. He is a keen reader of modern aviation developments and is engaged in the development of radical concepts based on existing aviation theories.

His gusto for aviation as a consolidated subject and exposure to a multitude of mission profiles with the IAF, gives him a complete overview of the task at hand for Team Indus, making him an asset in the team’s journey to conquer the moon and attempt to win the Google Lunar X Prize.

Indranil Chakraborty, Founding Member :!:

Indranil has more than 15 years of experience in project management, delivery, operations and business development. He has successfully delivered software projects in different areas like custom software development, product maintenance and support, enterprise applications, B2B solutions, ERP / CRM solutions and product development. He has worked with Cynosure, Ideactive, Axiom Strategy in various management positions. Indranil holds a Bachelor's degree from the Indian Institute of Technology, Kharagpur.

As a founding member of Team Indus, Indranil is responsible for mission planning, project management and weekly bud sessions.

Julius Amrit, Founding Member

Founder and Managing Partner of Purplewinds Consulting LLP. Julius has over 15 years of hands-on experience in conceptualizing and setting up businesses in education, IT and financial services. Julius is a PGDM from Indian Institute of Management, Kolkata.

An ardent believer in the Indian Entrepreneurial Spirit, unlocking business potential for Indian entrepreneurs and promoters is his mission. As a founding member of Team Indus, Julius is spearheading fund raising and guiding the overall brand strategy besides keeping the tech geeks focused.

Dilip Chabria, Founding Member

Dilip has close to 20 years experience, he has an enviable track record of entering small organizations and converting them into recognized competitors in their respective fields. He has managed and headed organizations consisting of 150 to 400 member teams and turnovers of USD 30 to 70 Million. Dilip also has extensive experience in working with numerous Public Sector organizations in India especially the Financial / Banking sector and Railways. He has worked with Interpublicity, Effective Media in various management capacities. Dilip holds PGD and Bachelor of Engineering degrees from Mumbai University

An admirer of all things "disruptive" and as a founding member of Team Indus, Dilip is responsible for managing the brand strategy, marketing and corporate relations.


Team Indus Lander
Image


Team Indus Lunar Rover(s)
Image


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PostPosted: 09 Mar 2013 01:20 
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jamwal wrote:

Support Team Indus on Facebook: https://www.facebook.com/teamindus.in


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PostPosted: 12 Mar 2013 13:34 
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KrishC wrote:
KrishC wrote:
It is highly unlikely that ISRO will do 2 launches in one month. They require a minimum of 6-8 weeks between launches. On another topic does anyone know the progress of semi-cryo engine development?

Yes but both launch pads have never been used at the same time


Though ISRO has two launch pads at SHAR, it has only one vehicle assembly building. So, at a time only one vehicle can be built. So, a vehicle can be built and kept on a launch pad waiting, then the second one can be built on the second launch pad.Both vehicles can be lauched at the same time because they are independent, or with the same time gap as the assembling period.

I wonder, what is the use of having two launch pads when there are no two assembly buildings.


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PostPosted: 12 Mar 2013 14:32 
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Each launch pad in ISRO is at considerable distance from other which include SLV-3 and ASLV ones. I dont think they are the same for multiple ones. Actually you can see them clearly from aircrafts flying from Chennai to Visakapattanam

I was only wondering why ASLV pad is always closed and not used for any launches. May be a short PSLV can be launched from there


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PostPosted: 16 Mar 2013 23:33 
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Hello,
I was just reading through current-science mag issue and came across this quote regarding our Risat-1
Quote:
The SAR is so sensitive to the interaction of wind with the ocean surface that, in addition to wind speed, patterns and structures within the atmospheric boundary layer produce identifiable surface imprints3. An algorithm has been developed for the retrieval of very
high resolution ocean surface winds, ocean wave spectra as well as detection of coastal and deep sea ships using RISAT-1 SAR data.


Quote:
All special requests and events of importance in and around India are being covered.


I was just wondering if any one here could perhaps try to answer my query that
#1 if our Sat is able to spot only surface/surfaced ships or can detect submarines as well.
#2 Can Risat 2 do it given it has an X band array.

Thanks


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