Indian Space Program: News & Discussion - Sept 2016

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

Post by arshyam »

That photo was of a PSLV? Wow!!
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Prasad »

Kakarat,
Email sent.
Singha
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Singha »

correct. WION news is also saying 700kg and the video they showed of the satellite being fixed onto the payload bus also showed it size of a maruti Alto...about right size for 700kg.

fairly meaty sensor possible.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

one minute to launch
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

Perfect lift off and left launch pad
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Singha »

watched it. the planned 100 sec loss of signal from trivandrum until rodrigues island dutch/french(?) station acquired it east of mauritius was interesting.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by nam »

Not well versed in satellite flight path, however the position seem to allow the satellite to fly along the length of Pak :D

Monitoring Pak missile launches :-)
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

Microsat and Laam Sat injected naarmaly
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

Polar launches will precess
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Ashokk »

Difference in orbit injection from nominal for Microsat-R is only 0.79 km 8) whereas dispersion permits upto +/- 20 km difference.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by kit »

THE Microsat eerily is similar to Israels Ofeq!
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Indranil »

So the new aluminum PS4 tank is to lower costs, not weight. The previous tank was made of titanium.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Singha »

They need to reduce the stacking vab time from 1 month on yesterdays pslv to 10 days

I think if tsto and strap ons are removed it can be done

Will permit the kind of salvo mrsi mode we want without needing to build more pads and vabs
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

The stacking doesnt rake much time. Its the system xhecks that take more time
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

It is 740 Kgs
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

https://www.isro.gov.in/update/25-jan-2 ... alamsat-v2

Jan 25, 2019
PSLV-C44 successfully launched Microsat-R and Kalamsat-V2
India's Polar Satellite Launch Vehicle (PSLV-C44)successfullyinjected Microsat-R andKalamsat-V2 satellitesinto their designated orbits.

The PSLV-C44 lifted off at23:37Hrs(IST) on January 24, 2019 from the First Launch Pad at Satish Dhawan Space Centre SHAR,Sriharikota in its 46th flight.

About 13 minutes 26 secondsafter lift-off, Microsat-R was successfully injectedinto intended orbit of 274 km.After injection, two solar arrays of the satellite were deployed automatically and ISRO Telemetry Tracking & Command Network (ISTRAC) at Bengaluru assumed control of the satellite.

Subsequently,the fourth stage (PS4) of the vehicle was moved to a higher circular orbit of 453 km after two restarts of the stage, to establish an orbital platform for carrying out experiments. Kalamsat-V2, a student payload, first to use PS4 as an orbital platform, was taken to its designated orbit about 1 hour and 40 minutes after lift-off.

This flight marked the first mission of PSLV-DL, a new variant of PSLV with two strap-on motors.

In the previous PSLV launch on November 29, PSLV-C43 had successfully launched India’s HysIS as well as 30 customer satellites from abroad.

In his post-launch address, Chairman Dr K Sivan said the PSLV-C44 mission was unique as it was for the first time ISRO used the last stage of the rocket as a platform to perform experiments in space.

“I hope the student community will make use of this opportunity being provided by ISRO. This new low cost technology will help students to conduct several inspiring experiments in space by attaching their instruments to the last stage of the rocket,” Dr Sivan said.

He congratulated Kalamsat-V2 team for their perfection in making satellites. “We must strive for science-oriented India. ISRO is open to all students across India. We want students to bring their satellites to us and we will launch them.Young scientists will shape the future of India,” Dr Sivan said. He also introduced the Kalamsat-V2 team.

Mission Director R Hutton thanked the entire PSLV-C44 team for their relentless efforts in making the launch successful.

Earlier on January 24, 2019, Dr Sivan held the third edition of Samwad with Students (SwS) in Sriharikota. Over 300 students from schools in and around the region had an opportunity to interact with him.

SwS is the newly-launched outreach initiative of ISRO to instill scientific temper among youngsters. The first edition was held in Bengaluru on January 1, 2019 and the second one at Kochi on January 20, 2019.

“Concentrate on the present with full sincerity. Dilemmas will disappear. A good student is not afraid of failure. Failures are important for learning as they open up new avenues,” Dr Sivan told the SwS participants.Jan 25, 2019
PSLV-C44 successfully launched Microsat-R and Kalamsat-V2
India's Polar Satellite Launch Vehicle (PSLV-C44)successfullyinjected Microsat-R andKalamsat-V2 satellitesinto their designated orbits.

The PSLV-C44 lifted off at23:37Hrs(IST) on January 24, 2019 from the First Launch Pad at Satish Dhawan Space Centre SHAR,Sriharikota in its 46th flight.

About 13 minutes 26 secondsafter lift-off, Microsat-R was successfully injectedinto intended orbit of 274 km.After injection, two solar arrays of the satellite were deployed automatically and ISRO Telemetry Tracking & Command Network (ISTRAC) at Bengaluru assumed control of the satellite.

Subsequently,the fourth stage (PS4) of the vehicle was moved to a higher circular orbit of 453 km after two restarts of the stage, to establish an orbital platform for carrying out experiments. Kalamsat-V2, a student payload, first to use PS4 as an orbital platform, was taken to its designated orbit about 1 hour and 40 minutes after lift-off.

This flight marked the first mission of PSLV-DL, a new variant of PSLV with two strap-on motors.

In the previous PSLV launch on November 29, PSLV-C43 had successfully launched India’s HysIS as well as 30 customer satellites from abroad.

In his post-launch address, Chairman Dr K Sivan said the PSLV-C44 mission was unique as it was for the first time ISRO used the last stage of the rocket as a platform to perform experiments in space.

“I hope the student community will make use of this opportunity being provided by ISRO. This new low cost technology will help students to conduct several inspiring experiments in space by attaching their instruments to the last stage of the rocket,” Dr Sivan said.

He congratulated Kalamsat-V2 team for their perfection in making satellites. “We must strive for science-oriented India. ISRO is open to all students across India. We want students to bring their satellites to us and we will launch them.Young scientists will shape the future of India,” Dr Sivan said. He also introduced the Kalamsat-V2 team.

Mission Director R Hutton thanked the entire PSLV-C44 team for their relentless efforts in making the launch successful.

Earlier on January 24, 2019, Dr Sivan held the third edition of Samwad with Students (SwS) in Sriharikota. Over 300 students from schools in and around the region had an opportunity to interact with him.

SwS is the newly-launched outreach initiative of ISRO to instill scientific temper among youngsters. The first edition was held in Bengaluru on January 1, 2019 and the second one at Kochi on January 20, 2019.

“Concentrate on the present with full sincerity. Dilemmas will disappear. A good student is not afraid of failure. Failures are important for learning as they open up new avenues,” Dr Sivan told the SwS participants.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

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

Post by Singha »

my dream my vision is a dusk launch of 1 pslv, 1 gslv and 1 tsto within a few seconds of each other from Skota pads , graceful smoke plumes arcing up into the gathering night sky .... a kind of cheen psyops mode in reverse. 3 parallel mission controls working together in PIP mode on DD telecast.

same for A5 and K4 full range shots into southern IOR but thats a rant for another thread.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Singha »

that pic is worthy of book cover for arthur c clarke and robert heinlein..... alone against the vast emptiness of the stars ....
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Prem »

https://twitter.com/vkthakur/status/1088665395299528705
My guess would be that #MicrosatR is equipped with Reflective Optics using 2 to 2.5m diameter SiC mirrors. US NRO Key Hole (KH) 11 series optical imaging satellites feature a 2.4 m mirror and have a resolution of 6-in orbiting at similar height
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Kakarat »

It was a great experience watching the launch yesterday
I got the streak shot and it looks good in the camera and haven't processed it yet and also have a few stills from another camera
I will be releasing the stills today on my twitter and as far as the streak shot I am planning to enter it in a contest and the contest rule is it should not be published digitally or printed in any form. sorry all you have to wait for it
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by JayS »

prasannasimha wrote:..
What a brilliant picture. Have you taken it yourself..?

That's gonna be my new wallpaper on my cellphone. :D

No I ahv eposted it (with the link) I got it from reddit
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Singha »

the 275km orbit is really on lowest end of possible orbits. the KH11 though LEO sats were between 12-18tons so had a lot of station keeping fuel. our munna is only 700kg. http://www.spacesafetymagazine.com/spac ... satellite/
the first ones had a 3 yrs lifespan, the newer XL ones 15-20 years.
the ISS @350km orbit has no inbuilt thrusters but periodically counters the decay by firing engines of visiting spacecrafts.

I am hoping we secretly raise the microsat orbit to a height which gives better lifetime. else in 2 years the atmospheric drag will decay its orbit down from 275km until it burns up.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by JTull »

It would have been relatively easy for DRDO to increase propellant loading as PSLV variants have plenty of spare capacity. My guess is that Microsat-R isn't planned to have a long mission life. Could it be covering for a contingency until a longer-term solution was in place? Is it a tech-demonstrator before such replacement?
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Singha »

perhaps a TD is my guess, a quick POC to make sure the bigger meat is making the right technical choices.
the 'proper' one might need a GSLV into LEO injection with perhaps few tons of fuel alone.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Kakarat »

https://twitter.com/kakarat2001/status/ ... 9116166144
PSLV C-44 in flight seen from Pulicat bird sanctuary ~10km from the Launch Pad
Image
Image
Image
Image

Since i was more occupied with the streak shot i could not concentrate on the settings for these, so kindly bare with me for the quality
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by JayS »

Any relation of MicroSat-R to the Microsat that ISRO launched previously..?

I think many news outlets confused between the two and hence the incorrect weight reporting. Microsat which was launched in C40 along with Cartosat2 and bunch of other tiny sats was a 100kg class TD sat. If the previous Microsat was TD for basic architecture and other related systems for small satellites, then its possible that Microsat-R is based on the same platform and with optical payload and fuel load its weight it raised to 740kg.



From ISRO site:
Microsat

PSLV-C40 carries a Microsatellite (Microsat) built by ISRO as a co-passenger payload. Microsat is a small satellite in the 100 kg class that derives its heritage from IMS-1 bus. This is a technology demonstrator and the fore runner for future satellites of this series. The satellite bus is modular in design and can be fabricated and tested independently of payload.

Microsat

प्रमोचक राकेट / Launch Vehicle:
PSLV-C40/Cartosat-2 Series Satellite Mission
उपग्रह का प्रकार / Type of Satellite:
Small
निर्माता / Manufacturer:
ISRO
स्‍वामी / Owner:
ISRO
अनुप्रयोग / Application:
Experimental
कक्षा का प्रकार / Orbit Type:
SSPO
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by prasannasimha »

For all you know with impending elections possible mischief by Lizard and the porkis so may have been launched for monitoring.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by JTull »

Yes, possibly. Low orbit implies shorter orbital time, meaning frequent tracking of areas of interest.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by disha »

prasannasimha wrote: PSLV Arc Image
Can you please add it to this thread -> viewtopic.php?f=3&t=7676
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Varoon Shekhar »

When can we reasonably expect a statement or confirmation, that the fourth stage orbiting experiment is successful, and that the satellite Kalamsat is working and beaming signals/information?
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by VKumar »

PM tweeted about the success of fourth stage orbiting
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by chetak »

Nambi Narayanan has been awarded the Padma Bhushan.

Truly justified and vindication at long last.

A pox on the houses of those who wronged him.

May they all rot in hell but also rot in prison here before they depart.

Image

Nambi Narayanan, the former scientist of the Indian Indian Space Research Organisation (ISRO), has been conferred the Padma Bhushan, the third-highest civilian award in the Republic of India. The scientist was instrumental in developing the Vikas engine that would be used for the first PSLV that India launched. But, Nambi Narayanan, who was falsely implicated in the ISRO spy case, was accused of selling state secrets comprising confidential test data from rocket and satellite launches. He was arrested in December 1994 and charged with espionage.

On September 14, the Supreme Court cleared the scientist of charges in the infamous ISRO espionage case and also directed the Kerala state government to pay him Rs 50 lakh as compensation. It was the first time that the Supreme Court erased all the adverse records against him to restore his reputation. The three-judge bench, comprising Chief Justice of India Dipak Misra and Justices AM Khanwilkar and DY Chandrachud, had said, "The criminal law was set in motion without any basis. It was initiated, if one is allowed to say, on some kind of fancy or notion. The liberty and dignity of the appellant which are basic to his human rights were jeopardized as he was taken into custody and, eventually, despite all the glory of the past, he was compelled to face cynical abhorrence," the judgement read.

The bench also said, "If he obtaining factual matrix is adjudged on the aforesaid principles and parameters, there can be no scintilla of doubt that the appellant, a successful scientist having national reputation, has been compelled to undergo immense humiliation. The lackadaisical attitude of the State police to arrest anyone and put him in police custody has made the appellant to suffer the ignominy…The Court cannot lose sight of the wrongful imprisonment, malicious prosecution, the humiliation and the defamation faced by the appellant".

In October 2018, Rajeev Chandrasekhar, BJP MP from Bengaluru, had appealed to the Union government to honour the scientist with a Padma award. In his letter, the MP had highlighted some of the greatest achievements of the scientist.

"Nambi Narayanan, who was a senior scientist at ISRO, was in-charge of the cryogenics division making rapid progress in the field of liquid technology – a key technology in rocket propulsion that is being deployed in GSLV. He was one of the chief architects of the ‘Vikas’ engine that is at the heart of India’s rockets, the same ones that made missions like Chandrayaan and Mangalyaan possible and which will be involved in many more space voyages in future. Vikram Sarabhai, the father of Indian Space, put his trust in Narayanan and sent him to Princeton University for higher studies on rocket propulsion. He could have been the next pioneer in rocket propulsion and space technology.”

However, the arrest in 1994 brought his career to a standstill and mental agony to him and his family.

Following his arrest by the Kerala police, the case was transferred to the Intelligence Bureau (IB) for investigation and was in custody for 50 days. After his release, the scientist claimed that the IB officials, who interrogated him, wanted him to testify falsely against some of his superiors.

When the Central Bureau of Investigation took over the case, no evidence linking Nambi Narayanan to the accusations against him was found. In 1996, the CBI dismissed the charges against him. Subsequently, in 1998, the Supreme Court declared him not guilty and awarded him a compensation of Rs 1 lakh, which was to be paid by the Kerala government.

The scientist then approached the National Human Rights Commission, seeking compensation for the torture and mental agony that he and his family members were subjected to during the course of the false case against him.

The scientist was instrumental in developing the Vikas engine that would be used for the first PSLV that India launched.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Suresh S »

Our soul should not rest in peace until all those responsible are brought to justice in Nambi Narayanan,s fake case.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by Prem »

Suresh S wrote:Our soul should not rest in peace until all those responsible are brought to justice in Nambi Narayanan,s fake case.
i believe the police man who put false case on him is in custody .
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by hnair »

Prem wrote:
Suresh S wrote:Our soul should not rest in peace until all those responsible are brought to justice in Nambi Narayanan,s fake case.
i believe the police man who put false case on him is in custody .
Nothing happened, Premji.... This third-rate officer who was at the forefront along with that uncouth Sreekumar, seem to get promoted in media because of factors beyond competence and is still strutting around free. Check the arrogance:
However, claims Mathews, it is he who has been victimised and has been fighting a lone battle to clear his name.
“Narayanan has been fighting the legal battle against me for so many years and there is a common feeling that he is the victim in the ISRO case. But it is me who has been victimised in the case. I have been fighting it with my own money. No government has supported me in that, though the previous UDF government took the decision not to take action against the investigating officers,” Mathews said.

Already, two awards of compensation have been made to Narayanan in regard to the case. In 1998, the Supreme Court had directed the state government to pay compensation of Rs one lakh to Narayanan and the others discharged in the case. Later, the National Human Rights Commission also awarded Narayanan an interim compensation of Rs ten lakh for the “mental and agony and torture he had undergone”.
It is like Dushasana accuses Panchali of causing paper-cuts on his pinkie, because her sari had too much starch.

The underlined part is the most important one and is almost a public confession to me that UDF government and the Oomen Chandy faction of Congress is afraid of what he will spill about their complicity in the conspiracy against Shree Nambi Narayanan.
However, Mathews insists that the CBI closing the case against Narayanan is not proof that the former scientist was innocent. “How can one say that? The CBI closed the case, but does that mean that Narayanan was innocent? The valid proof is the application he gave to the Chairman of ISRO seeking voluntary retirement. Mariam Rasheeda, the Maldives native who was the first to be arrested in the case, was held on October 20, 1994. On November 1, Narayanan applied for voluntary retirement. Isn’t it fishy?” Mathews asks.
This moron of an officer claims the VRS request was the clincher and this was being tom-tommed even recently in local media as some kind of huge evidence of wrong doing. Shree Nambinarayanan has already filed for retirement, because of some promotion issues as he explained a few months back (once again).
"There was no connection between the two. My decision to seek VRS was part of organizational issues. I assumed that my boss would be the next chairman. But, ignoring his seniority, Rangan was appointed chairman. Then, I was the director of cryogenic project and deputy director, LPSC. Till then, centre directors were considered to the post of chairman. Unless and until my immediate boss retired or was elevated, my chance to reach the top post was remote. At this juncture, I offered my resignation," he said at a press meet.

"I had offered the same to the former chairman as well with the hope that it will help pre-empt the possibility of flouting seniority norms in selection of new chairman," added Narayanan. He scoffed at theories put forth by some investigators, linking his VRS application to the case. "Suppose I was a spy, would I offer my resignation in an open manner?" he asked.
Am glad Shree Modi has finally decided to decisively and openly support Nambi-sir. Hopefully those who persecuted him, will be thrown behind bars soon.
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Re: Indian Space Program: News & Discussion - Sept 2016

Post by suryag »

For all those Modi detractors tell me doesnt this episode show he has his heart in the right place ? Padma Bhushan is no less an award and that too picking up a person acccused(and of course proven wrong) of spying
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