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Indian Space Programme Discussion - Sept 2016

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krishGo
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Re: Indian Space Programme Discussion - Sept 2016

Postby krishGo » 16 Mar 2017 05:35

A Nandy wrote:
A good example would be the Chinese HSF program. They had their first manned flight in 2003 and are still a good 2-3 years from launching the first components of their Space Station.


eh?

https://en.wikipedia.org/wiki/Tiangong-1


Tiangong was like I previously mentioned, a technology demonstrator and more of a small space lab. The Chinese plan is to build a Mir class space station, the start of the assembly of which is still a couple of years away.

hnair
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Re: Indian Space Programme Discussion - Sept 2016

Postby hnair » 16 Mar 2017 12:44

There was a BBC article on Rakesh Sharma, who has retired to Coonoor, which had the usual condescension:

The New York Times presciently wrote that "India is not likely to have its own manned space programme for a long time, if ever, and Mr Sharma's flight may well be the last by an Indian for a long time." Thirty-three years later, Mr Sharma remains the only Indian to travel to space.


Which made me look up NYT's original barf. Shows where that stupid cartoon came from

arun
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Re: Indian Space Programme Discussion - Sept 2016

Postby arun » 17 Mar 2017 21:45

A Deep Space Mystery Revealed: Is India Planning To Brew Beer On The Moon? Image :

Huffington Post India

Indranil
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Re: Indian Space Programme Discussion - Sept 2016

Postby Indranil » 18 Mar 2017 03:17


Indranil
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Re: Indian Space Programme Discussion - Sept 2016

Postby Indranil » 20 Mar 2017 23:23

Details of the ISRO's scramjet experiment


Indranil
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Re: Indian Space Programme Discussion - Sept 2016

Postby Indranil » 20 Mar 2017 23:41

ISRO 's cryo efforts


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Re: Indian Space Programme Discussion - Sept 2016

Postby JayS » 22 Mar 2017 14:55

Indranil wrote:Details of the ISRO's scramjet experiment



Brilliant. I am very happy to see the high quality data that too in duplicate that ISRO could gather from the single test, pretty much in line with the typical highly efficient ways of ISRO. This will be used for many years to come for myriads of activities - design, verification, validation of SW and HW both, across the RnD labs and academia in India.

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Re: Indian Space Programme Discussion - Sept 2016

Postby srinebula » 22 Mar 2017 19:01

JayS wrote:
Indranil wrote:Details of the ISRO's scramjet experiment



Brilliant. I am very happy to see the high quality data that too in duplicate that ISRO could gather from the single test, pretty much in line with the typical highly efficient ways of ISRO. This will be used for many years to come for myriads of activities - design, verification, validation of SW and HW both, across the RnD labs and academia in India.


Why are the audience so passive; why couldn't they do a standing ovation at the end, not necessarily for the presentation but for such great work on real hard problems.

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Re: Indian Space Programme Discussion - Sept 2016

Postby SSSalvi » 23 Mar 2017 05:45

Close encounters of an 'Old' satellite with the Young 'Bachcha' s.

TSKelso, the gaurdian of Celestrak website had tweeted:

Scary set of 400+ conjunctions this week for PSLV-C37 payloads with COSMOS 1674.


https://twitter.com/TSKelso/status/842922666998751233

Here is my explanation ( posted in other forum ).

Image

Image shows the path of COSMOS ( Light blue ) crossing with the nano-sats launched by PSLV C37 ( Green,Red,Purple etc .. overlapping ) at about 22:13 UT on 22nd March.

Notice how close 'cos' satellite is close to '85' ( which is actually FLOCK 3P-85 satellite ).

In fact it came within about 4 kms in this particular encounter.

In the next about 20 hours 6 nano-sats came within 3.5 to 4.5 kms of 'cos' satellite.

What it simply means is that these close encounters are very likely to result in collision.

Varoon Shekhar
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Re: Indian Space Programme Discussion - Sept 2016

Postby Varoon Shekhar » 24 Mar 2017 16:32

SSSalvi, KrishG or SSridhar please de-confirm :lol: a very unofficial report, that even the GSLV Mark 2 with "South Asia Satellite" is now going to be delayed to the end of April. It is supposed to go up on April 4th, which itself is a delay from March 31st. Say it isn't so :(

On the plus side, a PSLV(C-38) with Cartosat 2E and a dozen or more smaller satellites is officially scheduled to be launched on April 15. It looks like three new customers, Australia, Malaysia and Finland will have their satellites on board. And possibly a fourth, Latvia.

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Re: Indian Space Programme Discussion - Sept 2016

Postby SSSalvi » 24 Mar 2017 19:47


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Re: Indian Space Programme Discussion - Sept 2016

Postby sohamn » 24 Mar 2017 22:46

Make this happen Isro, 3 launches in a month, no more delays.

Rishi Verma
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Re: Indian Space Programme Discussion - Sept 2016

Postby Rishi Verma » 24 Mar 2017 23:16

These SDRE sounding Cartosats are for ahem SDRE cartography (map-making) onlee. It weighs onlee 650kg with 25cm resolution and carries in-orbit focussing and many mirrors for ahem reasons.

Isro has been sending Cartosats up since 2005 and they have yet to print a single map :wink:

Isro should consider in-space refueling (using another disposable nano sat) to extend satellite life.

prasannasimha
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Re: Indian Space Programme Discussion - Sept 2016

Postby prasannasimha » 24 Mar 2017 23:34

ISRO gears up to flag off Cryogenic Stage on March 27
By S V Krishna Chaitanya | Express News Service | Published: 23rd March 2017 01:43 AM |
Last Updated: 23rd March 2017 08:37 AM | A+A A- |

ISRO successfully launched a record 104 satellites including India's earth observation satellite on-board PSLV-C37/Cartosat2. | PTI File photo for representational purpose | PTI
CHENNAI: The Fully Indigenous cryogenic upper stage (final flight stage) is ready and likely to be flagged off from the ISRO Propulsion Complex, Mahendragiri, Tirunelveli on March 27 for integration in Satish Dhawan Space Centre, Sriharikota.
Meanwhile the nation is on course to launch the heavy-lift GSLV Mk-III, which is the next generation launch vehicle of the Indian Space Research Organisation (ISRO) capable of placing four tonne class satellites in geostationary transfer orbit (GTO).

Confirming the development, PV Venkitakrishnan, director, ISRO Propulsion Complex, told the Express that the cryogenic stage was fully integrated with the sub-systems and would be sent to Sriharikota next Monday. Already other two stages -- liquid core stage (L110) and solid strap-on-motors (S200) -- had reached Sriharikota and had been integrated.
Only last month, the cryogenic upper stage, code named C-25 D, passed the long duration endurance test for 640 seconds conducted at the Mahendragiri Propulsion Complex. India is only the sixth nation to have mastered the complex cryogenic technology.

ISRO scientists say they are happy with the progress and the cryo stage has fulfilled all the key parameters like chamber pressure, liquid oxygen and liquid hydrogen flow, injection pressure temperatures among others.
The cryogenic stage is capable of producing a thrust of 20 tonnes, using liquid hydrogen and liquid oxygen as propellants in the first Indian turbo pump engine developed indigenously. It was conceived, designed, fabricated within ISRO with the external support of Indian industry.
However the launch of GSLV Mk-III was delayed. The ISRO had planned to launch the heavy-lift vehicle carrying GSAT-19, a communication satellite, on April 20, but now the sources said the launch would take place only by May end or June first week.

Reliable sources told the
Express that GSLV Mk-III launch could happen only after the GSLV Mk-II launch. GSLV Mk-II carrying SAARC satellite was scheduled for launch this month end, but ISRO Satellite Centre (ISAC) was unable to deliver the satellite within the stipulated time because of technical issues. This forced the ISRO to rework on its launch calendar. Now, the SAARC satellite launch is rescheduled for April end.

Varoon Shekhar
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Re: Indian Space Programme Discussion - Sept 2016

Postby Varoon Shekhar » 25 Mar 2017 00:43

Not happy, but I$RO knows what it is doing, and the real picture.Have to look at it philosophically. The article is inaccurate when it says the Mark 3 turbo pump is the first one to be produced indigenously. The turbo pumps for Vikas, L-45 strap- on and C12 stage were made in India.Maybe what they mean is designed from first principles. The others were based, directly or indirectly, on French and Russian designs.


nam
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Re: Indian Space Programme Discussion - Sept 2016

Postby nam » 25 Mar 2017 02:47

Given that we now have the data from the flight test, we can calibrate the hypersonic wind tunnel accordingly. Brilliant stuff.

This should push the DRDO, Brahmos programmes faster as well. We now have a reference, all thanks to ISRO flight test.

Our chance to leapfrog. Break the sixth nation syndrome.

Given that scramjet engine don't have moving parts, we can apply to all sorts of applications. Hypersonic BVRs, ASHM, boost phase BMD interceptor etc. It could be the silver bullet for national defence..

hanumadu
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Re: Indian Space Programme Discussion - Sept 2016

Postby hanumadu » 25 Mar 2017 07:53



Does this mean we no longer have to import or depend on others for supersonic/hypersonic wind tunnels?


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