Indian Space Program Discussion
Re: Indian Space Program Discussion
http://timesofindia.indiatimes.com/indi ... 892852.cms
CHENNAI: Indian space science is waiting at the threshold of a new phase of mega satellite launches and exploration as the countdown for the GSLV-D5 rocket launch began at 11.50am on Sunday. Twenty-nine hours later, at 4.50pm on Monday, the rocket carrying telecommunication satellite GSAT-14 will lift off from Sriharikota, 100km north of Chennai.
GSAT-14, which weighs 1,982kg, will be used for telecast and telecommunication.
What makes the launch crucial for the nation is the use of an indigenous cryogenic engine as the upper stage. The first attempt to use an indigenous cryogenic engine on April 15, 2010 to power GSLV-D3 was a failure. With only one more Russian cryogenic engine left in the Isro arsenal, success of the indigenous technology using oxygen and hydrogen in extreme low temperatures as the fuel will propel several big ticket future missions including a manned project to space.
Isro senior scientists led by chairman K Radhakrishnan are monitoring GSLV-D5, whose strap-boosters started getting fuelled soon after the countdown. Liquid propellants are being filled into the second stage. Liquid hydrogen and liquid oxygen, which fuel the cryogenic engine will be filled around 9am on Monday. Scientists at the Satish Dhawan Space Centre told TOI that the rocket's health and weather conditions were fine.
India needs cryogenic engines to launch GSLVs that can carry payloads weighing more than three tonnes, which hold the key to future of telecommunication and space exploration. GSLV-D5 weighs 414 tonnes.
CHENNAI: Indian space science is waiting at the threshold of a new phase of mega satellite launches and exploration as the countdown for the GSLV-D5 rocket launch began at 11.50am on Sunday. Twenty-nine hours later, at 4.50pm on Monday, the rocket carrying telecommunication satellite GSAT-14 will lift off from Sriharikota, 100km north of Chennai.
GSAT-14, which weighs 1,982kg, will be used for telecast and telecommunication.
What makes the launch crucial for the nation is the use of an indigenous cryogenic engine as the upper stage. The first attempt to use an indigenous cryogenic engine on April 15, 2010 to power GSLV-D3 was a failure. With only one more Russian cryogenic engine left in the Isro arsenal, success of the indigenous technology using oxygen and hydrogen in extreme low temperatures as the fuel will propel several big ticket future missions including a manned project to space.
Isro senior scientists led by chairman K Radhakrishnan are monitoring GSLV-D5, whose strap-boosters started getting fuelled soon after the countdown. Liquid propellants are being filled into the second stage. Liquid hydrogen and liquid oxygen, which fuel the cryogenic engine will be filled around 9am on Monday. Scientists at the Satish Dhawan Space Centre told TOI that the rocket's health and weather conditions were fine.
India needs cryogenic engines to launch GSLVs that can carry payloads weighing more than three tonnes, which hold the key to future of telecommunication and space exploration. GSLV-D5 weighs 414 tonnes.
Re: Indian Space Program Discussion
The Hindu article on GSLV D5: http://www.thehindu.com/sci-tech/scienc ... 033057.ece
Re: Indian Space Program Discussion
Good luck guys - the nation prays for your success .
Re: Indian Space Program Discussion
Found this video of a successful GSLV launch showing a ground trace. Flight events and parameters are shown intermittently during the video, from roughly 3:00 min. onwards. http://www.youtube.com/watch?v=w5vO7YhxsAo
Screen shot at 3:36 shows the last flight event i.e. Cryogenic stage turned off at 1021 seconds (17 minutes) and satellite separation occurs at 1036 secs. At video time 3:47, it shows a ground trace of the rocket path, which looks mostly straight and generally free of course changes. The trace is actually a moving shot but lasts only 2 seconds (1167 & 1168 seconds). This is after satellite separation...one of the marks on the trace in pink says 'CSOFF'.
Assuming all goes well, there should be a similar video tomorrow for D05...with time vs. altitude, speed, and ground trace.
Screen shot at 3:36 shows the last flight event i.e. Cryogenic stage turned off at 1021 seconds (17 minutes) and satellite separation occurs at 1036 secs. At video time 3:47, it shows a ground trace of the rocket path, which looks mostly straight and generally free of course changes. The trace is actually a moving shot but lasts only 2 seconds (1167 & 1168 seconds). This is after satellite separation...one of the marks on the trace in pink says 'CSOFF'.
Assuming all goes well, there should be a similar video tomorrow for D05...with time vs. altitude, speed, and ground trace.
Re: Indian Space Program Discussion
Wish ISRO gave us a birds eye view from top down from the GSLV lift off. It is going to be successful launch.
Re: Indian Space Program Discussion
For acadaemic reasons alone,in manned spaceflight,there was supposedly an escape package for the crew module which could parachute the module in case there was a problem after launch.Cannot a similar device be designed for commercial sat launches to save the sats/mission package in case similar problems are experienced ?
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Re: Indian Space Program Discussion
Costs of developing and integrating that system will probably be higher than the cost of the satellite itself...Philip wrote:For acadaemic reasons alone,in manned spaceflight,there was supposedly an escape package for the crew module which could parachute the module in case there was a problem after launch.Cannot a similar device be designed for commercial sat launches to save the sats/mission package in case similar problems are experienced ?
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Re: Indian Space Program Discussion
Yes, high time we have some nice HD videos which gives bird's eye view of the launch.kit wrote:Wish ISRO gave us a birds eye view from top down from the GSLV lift off. It is going to be successful launch.
Re: Indian Space Program Discussion
+ @ 22:05 IST 18 Aug 2013juvva wrote:status update @ http://isro.org/ :
2nd stage propellant loading in progress.
- 2nd stage propellant loading completed.
- strap on propellant loading in progress.
Re: Indian Space Program Discussion
Good video from undeetv
Re: Indian Space Program Discussion
On the eve of GSLV D5 Launch using indigenous cryogenic engine, it is worth remembering the incident involving Project Head which had rocked the nation long time back.
Today DD did a feature talk with Dr Nambinayaran, Project Director of ISRO's Cryogenic Reseach Divison. He was falsely implicated in Spy Scandal , accused of leaking information to Maldivian Mohtoramas and tortured by various agencies , kept in custody , exonerated in CBI investigation and subsequently by Supreme Court.
Siby Mathews is currently the Chief Information Commissioner in Kerala.
Looks like a classic Mole Operation.
Today DD did a feature talk with Dr Nambinayaran, Project Director of ISRO's Cryogenic Reseach Divison. He was falsely implicated in Spy Scandal , accused of leaking information to Maldivian Mohtoramas and tortured by various agencies , kept in custody , exonerated in CBI investigation and subsequently by Supreme Court.
The police had made out a case that Narayanan and Sasikumaran had passed on secret documents to other countries, especially Pakistan. They accused Chandrasekhar of Russia's space agency, Bangalore contractor S K Sharma, and inspector general Raman Srivastava of passing on secrets of the Aeronautical Defence Establishment, Bangalore. They alleged that Chandrasekhar, Sasikumaran and two women from the Maldives, Mariyam Rasheeda and Fauzia Hassan, had met secretly to exchange papers and money.
In 1996, the CBI submitted its closure report in the chief judicial magistrate's court in Kochi, concluding that the allegations of espionage were unproved and false. The court agreed and all six accused were discharged.
http://www.indianexpress.com/news/the-k ... nDKUW.dpuf
http://www.thehindu.com/news/national/k ... 958850.eceThe CBI pointed out lapses by Kerala police officers Siby Mathews, K K Joshwa and S Vijayan, who probed the case. In a report to the Kerala government, it called for "necessary action as deemed fit". In June last year, the home secretary issued an order saying it was not proper or legal to take action against the officials after 15 years. The government decided no action need be taken.
Siby Mathews is currently the Chief Information Commissioner in Kerala.
Looks like a classic Mole Operation.
Re: Indian Space Program Discussion
http://ajitvadakayil.blogspot.in/2012/0 ... yanan.html
This is the same RBS who is used against NaMo, though unsuccessfully.He was then project director of the prestigious cryogenic system project and was working on developing an Indian cryoengine for the third stage of the GSLV.
Narayanan introduced the liquid fuel rocket technology in India in the early 1970s, when A. P. J. Abdul Kalam’s team was working on solid motors. He foresaw the need for liquid fuelled engines for ISRO’s future civilian space programmes. He was personally mentored and encouraged by the then ISRO chairman Satish Dhawan.
Narayanan developed liquid propellant motors, first building the successful 600-kg thrust engine in the mid-1970s and thereafter moving on to bigger engines. His team developed the Vikas engine used by several ISRO rockets including the Polar Satellite Launch Vehicle(PSLV) that took Chandrayaan-1 to the moon in 2008.
The Vikas engine is used in the second stage of PSLV and as the second and the four strap-on stages of Geo-Synchronous Satellite Launch Vehicle (GSLV).Nambi led the Indian team to France to work with scientists there on the development of their Viking engine.
And it was he, they add, who was mostly responsible in learning the complex configurations that helped the Indians to later develop the Vikas engine, an improved version of the Viking.
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Nambi narayanan accused Sibi Mathew ** and RB Sreekumar of instigating some other unidentified police officers to physically assault him at the Hindustan Latex guesthouse in Trivandrum in early December 1994, call him a ******** and a traitor.
Narayanan was arrested and spent 50 days in jail, most of the time naked.
Nambinarayanan says that RB Sreekumar, of the Intelligence Bureau (IB) who interrogated him wanted him to make false accusations against the top brass of ISRO.
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Re: Indian Space Program Discussion
^^ this is one reason why I am always bullish about India's future. Despite all odds, corruptions, sanctions, peanut budget compared to west, Indian scientists will always deliver against all odds. ISRO's hard work in getting top recruits have finally paid off. After success each one involved based on their level should get big bonuses
Re: Indian Space Program Discussion
The NDTV video was for GSLV-D3 in 2010, not the current launch of GSLV-D5.
Re: Indian Space Program Discussion
That is written on the Vehicle itself.
Re: Indian Space Program Discussion
Wishing ISRO all the best., waiting for a milestone to be successfully crossed.
Re: Indian Space Program Discussion
status update @ www.isro.org:
- 2nd stage propellant loading completed.
- strap on propellant loading completed.
- 2nd stage propellant loading completed.
- strap on propellant loading completed.
Re: Indian Space Program Discussion
I envy the guys in khan land and other kingdoms, they are sleeping thru these tense hours.
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Re: Indian Space Program Discussion
All the best ISRO! Though considering the complexity of cryo propulsion, I am mentally prepared to accept a couple of more failures.
Meanwhile, a newbie question- the space shuttlle's main engines are also cryo and the flames are bluish-white in colour while that of CE 7.5 (as seen on the video of the engine being tested) are orange-ish. Can some guru enlighten. Thanks
Meanwhile, a newbie question- the space shuttlle's main engines are also cryo and the flames are bluish-white in colour while that of CE 7.5 (as seen on the video of the engine being tested) are orange-ish. Can some guru enlighten. Thanks
Re: Indian Space Program Discussion
Really? I will tune off later though since I believe in certain "jujoos".juvva wrote:I envy the guys in khan land and other kingdoms, they are sleeping thru these tense hours.
Re: Indian Space Program Discussion
Tension is unbearable. I am unable to focus on work.
Guys dont jinx this. GSLV will fail onlee
Guys dont jinx this. GSLV will fail onlee
Re: Indian Space Program Discussion
Isro update:
Preparation of third stage propellant filling operation in progress.
Preparation of third stage propellant filling operation in progress.
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Re: Indian Space Program Discussion
Live webcast of launch from 16:15 onwards on DD.
Re: Indian Space Program Discussion
Relax Guys , ISRO will make it this time I am quite confident.
All the Best to ISRO Team ......I have got my Mysore Pak ordered from Bangalore ready for the occasion.
All the Best to ISRO Team ......I have got my Mysore Pak ordered from Bangalore ready for the occasion.
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Re: Indian Space Program Discussion
Propellants filling in Cryo stage might be comlete by now. 4 hours to launch.
Re: Indian Space Program Discussion
Depends on thrust of the engine too. ISRO engines are high altitude ones, the shuttle ones are ground ones, has more powerravar wrote:All the best ISRO! Though considering the complexity of cryo propulsion, I am mentally prepared to accept a couple of more failures.
Meanwhile, a newbie question- the space shuttlle's main engines are also cryo and the flames are bluish-white in colour while that of CE 7.5 (as seen on the video of the engine being tested) are orange-ish. Can some guru enlighten. Thanks
For example, check the thrust of strap on liquid engine of GSLV and same engine in the second stage. The strap on will show less power since the optimal operating area for that engine is at high altitude
Only if you optimize the engine and make it powerful for using on ground, you can use them effectively on ground. If the Vikas engine has the thrust to lift the GSLV, there was no need of the solid stage. Since it cant, a solid stage is required
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Re: Indian Space Program Discussion
Name of this year in Indian calendar (at least Telugu calendar year) is 'Vijaya' which means succes or victory. Thsi year ends around April-2014. India will see a lot of successes by then. Failures are less likely. Some of the successes/milestones:
1. First indegenous nuclear powered submarine Arihanth going to sees with nuclear engine going critical.
2. Cryogenic engine success on GSLV-D5.
3. Mars orbiter launch.
4. Intermediate Jet trainer-HAL completing IOC.
5. NAG missile success.
6. K-4 missile success
7. Arjun - MK2 success
8. Launch of INS Vikrant
9. LCH launch
Did I miss any thing important or did i include any thing out of dates?
1. First indegenous nuclear powered submarine Arihanth going to sees with nuclear engine going critical.
2. Cryogenic engine success on GSLV-D5.
3. Mars orbiter launch.
4. Intermediate Jet trainer-HAL completing IOC.
5. NAG missile success.
6. K-4 missile success
7. Arjun - MK2 success
8. Launch of INS Vikrant
9. LCH launch
Did I miss any thing important or did i include any thing out of dates?
Re: Indian Space Program Discussion
Excess hydrogen in the nozzle emits the characteristic red (or orange) colour.ravar wrote:. . . while that of CE 7.5 (as seen on the video of the engine being tested) are orange-ish.
Re: Indian Space Program Discussion
oh no hydrogen as well as oxygen is colorless -when any of the cryogenic propellant vents after filling and before launch it freezes the moisture and carbon di oxide in air and create dense white mist which in night launch on sodium light may seem orangish
Re: Indian Space Program Discussion
liquid oxygen has a pale blue color liquid hydrogen is like water colorless so ehan eiether liquid vents you cannot see what we see the condensed air in case of liquid hydrogen almost frozen air
Re: Indian Space Program Discussion
But, the hydrogen I am taking about is superheated, not the venting hydrogen at filling time.Shankar wrote:oh no hydrogen as well as oxygen is colorless -when any of the cryogenic propellant vents after filling and before launch it freezes the moisture and carbon di oxide in air and create dense white mist . . . .
Re: Indian Space Program Discussion
SS Saar. Will you be watching it live?
I have to play office office til 6.
I have to play office office til 6.
Re: Indian Space Program Discussion
Hope to. Can't you see it on the web in office , even if you are in a meeting ?Sri wrote:SS Saar. Will you be watching it live?
Re: Indian Space Program Discussion
can someone please post weblink where it will be displayed liveSSridhar wrote:Hope to. Can't you see it on the web in office , even if you are in a meeting ?Sri wrote:SS Saar. Will you be watching it live?
Re: Indian Space Program Discussion
The NASA space shuttles, which were powered by a liquid oxygen-hydrogen fuel mixture, discharged significant quantities of water vapour into the mesosphere about 80 kilometres above the surface of the Earth.
Polar mesospheric clouds, first recorded by scientists in the 1880s, typically form at Arctic or Antarctic latitudes during the summer months. They consist of ice crystals that coalesce around tiny, dust-like remnants of meteorites that persist in the super-cold mesosphere after space rocks burn up in Earth’s atmospheric shield.
PMCs or noctilucent clouds — so called because they glow (lucent) in the night (nocti) — can form naturally, although rarely, as water vapour from the lower atmosphere reaches the drier upper atmosphere and freezes in temperatures of about minus-150 C.
may be this relevant
Polar mesospheric clouds, first recorded by scientists in the 1880s, typically form at Arctic or Antarctic latitudes during the summer months. They consist of ice crystals that coalesce around tiny, dust-like remnants of meteorites that persist in the super-cold mesosphere after space rocks burn up in Earth’s atmospheric shield.
PMCs or noctilucent clouds — so called because they glow (lucent) in the night (nocti) — can form naturally, although rarely, as water vapour from the lower atmosphere reaches the drier upper atmosphere and freezes in temperatures of about minus-150 C.
may be this relevant
Re: Indian Space Program Discussion
The launch has been delayed because of a snag as per Times Now. Nothing more known or on ISRO's website.
Updated: Launch called off....
Updated: Launch called off....
Re: Indian Space Program Discussion
Countdown stopped for one hour now. Times Now
Re: Indian Space Program Discussion
DD National ticker: Launch of GSLV/D5 Mission Postponed
Re: Indian Space Program Discussion
NDTV website : 1600 hrs
It was halted one hour and 14 minutes ahead of lift-off, after some 'leakage' was detected. Officials say they are not sure when the countdown can be resumed.
===
So around 3:30 PM countdown stopped
It was halted one hour and 14 minutes ahead of lift-off, after some 'leakage' was detected. Officials say they are not sure when the countdown can be resumed.
===
So around 3:30 PM countdown stopped
Last edited by SSSalvi on 19 Aug 2013 16:00, edited 1 time in total.