ISRO General News and Updates

[Chinmoy]

Indian Air Force To Get Dedicated Satellite Developed by ISRO

https://defenceaviationpost.com/indian-air-force-to-get-dedicated-satellite-developed-by-isro/

Now this is what I was talking about and waiting for. Hope Christmas would be much more merrier for IAF this time.

 

[republic_roi97]

Indian Air Force To Get Dedicated Satellite Developed by ISRO

https://defenceaviationpost.com/indian-air-force-to-get-dedicated-satellite-developed-by-isro/

Now this is what I was talking about and waiting for. Hope Christmas would be much more merrier for IAF this time.

Quoted from the same site :---------------------

Once ISRO places GSAT-7A in the Geostationary orbit, the communication satellite will enable the IAF to interlink different ground radar stations, airbases and AWACS aircraft. It will boost Indian he air force’s network-centric warfare capabilities and enhance its international operations.

 

[Chinmoy]

Quoted from the same site :---------------------

Hmm... This is what I mentioned few days back after the successful launch of GSLV.

 

[Indx TechStyle]

So, C44 won't carry SPADEX payload together with EMISat. Seems like that.

 

[Indx TechStyle]

ISRO Should Kick On With Developing Reusable Launch Technology

Falcon 9 first stage landing on drone ship “OF COURSE I STILL LOVE YOU” (www.spacex.com)
Snapshot

• There is an opportunity for ISRO to compete even strongly in the future – the key to it lies in developing the reusable launch technology.

The

Indian Space Research Organisation (ISRO) in November launched the GSLV Mk-III D2 successfully, with the GSAT-29 communication satellite on board. It has made a commendable achievement with its new launcher, which earlier had been something of a dream for India. Now it will now allow the country to place satellites as heavy as 4 tonnes into the geosynchronous transfer orbit (GTO).

Apart from the launch of heavy satellites into the GTO, India plans to use GSLV Mk-III for the launch of two critical

missions – Chandrayaan-II, which involves soft landing on the lunar surface, and the human spaceflight mission, which the ISRO plans to undertake sometime before 2022.

Getting Ahead

ISRO has always been at the forefront of developing technology accessible to the ordinary folk. Unlike other space agencies, ISRO is cost-conscious and result-oriented and it’s been able to achieve all that it has with a modest annual budget of $1.7 billion a year. Thanks to its tried-and-tested workhorse, the Polar Satellite Launch Vehicle (PSLV), it is now the most preferred agency for launching small satellites.

However, heavier satellites require the Geosynchronous Satellite Launch Vehicle (GSLV). The development of the homegrown

cryogenic C25 stage engine that uses extremely low-temperature propellants Liquid Hydrogen (LH2) at 20 Kelvin ( -253 C) and Liquid Oxygen (LOX) at 80K (-193 C) is remarkable and in line with ISRO’s efforts to turn GSLV as its next go-to machine. According to ISRO, an improved version of these engines would feature in its Chandrayaan-II and Adithya missions in the future.

However, casting GSLV Mk-III alone as a soldier in the space arena would be misguided. If ISRO needs to compete well in the domain of space, it must focus on developing the

reusable launch vehicle (RLV).

ISRO is in the

league of three space agencies that has the potential of driving the reusable launch vehicle project into the future, the other two being SpaceX and Blue Origin. SpaceX has proven experiences in reusing parts of rockets while Blue Origin lags with multiple vertical ascents and landing tests. ISRO, for its part, has successfully completed its testing of the RLV in 2016.

Although the

European Space Agency, the Russian Roscosmos, and the Chinese National Space Administration all have plans to venture into the reusable launch vehicle market, none of them has been reported testing prototypes, like in the case of ISRO, or has mastered reusable technology like SpaceX.

The Competition

SpaceX was the first to work on reusable launch systems. Kicked off in 2002, it has completed over 60 launches and 30 landings. It is arguably the first company in the world that has complete data sets for landing rockets vertically. Over the years, the private space company has developed the Falcon reusable launch family, including the extremely capable

Falcon 9 (23 tonnes) and Falcon Heavy(64 tonnes).

Blue Origin, founded by billionaire Amazon chief executive

Jeff Bezos, initially focused on developing a small, reusable suborbital rocket called New Shepard. The company made history in November 2015 when it launched and landed the New Shepard rocket – it was the first time that a rocket booster returned from space for a vertical landing.

However, in terms of launches, Blue Origin has a lot of ground to cover to match up to SpaceX. What makes it a contender anyway, howver, is its

BE-4 engine, which is more powerful than the Merlin engines used in the Falcon 9.

Interestingly, ISRO, a government organisation unlike the other two, can still hold its own in this space – a successful Mars Orbiter Mission on the first try and 104 satellites in a single launch make up only the recent portfolio of India’s space agency. Now, against the backdrop of the successful launch of the heaviest ever GSAT-29 and the most recent

GSAT-11, codenamed “Big Bird”, ISRO’s efforts to develop reusable launch vehicles should gain places on the priority list.

In 2016, the

RLV prototype was successfully launched and valuable data was collected. RLV-TD (technology demonstration) had a similar design as that of a space shuttle – it launched horizontally and had a colossal valley covered with heat-resistant material for high-velocity re-entry and landing. Though the current design will bring down the cost per launch significantly, it limits the RLV’s use case to earth. Unlike SpaceX, this design will not work on the Moon or Mars as there is no runway or atmosphere for winged horizontal entry. Moreover, a commercially viable RLV is 12 years away with the launch planned at 2030.

With its strong track record, ISRO can be a formidable contender in the scheme of space launches in the future. By adjusting its priorities and throwing its weight firmly behind its reusable launch programme, the RLV could

disrupt the launch market as well as enable manned missions and launches of sophisticated communication satellites weighing more than 5 tonnes.

ISRO’s continued success should be translated into more growth by investing more on engineers and equipment to develop rockets comparable to Falcon 9.

 

[sorcerer]

ISRO Should Kick On With Developing Reusable Launch Technology

How economical is this RE ENTRY Stunt for boosters? Economy Vs Time Vs Re-haul cost
IMO, these boosters would sustain enough damage through stress and other factors, making them vulnerable for future Immediate launch...making it ..errmm..errr...
Hope there is something in it than the technology demonstration which is not quite gotten the hold of it landing it precisely back on earth on the designated spot.

One thing is, since these parts are in modules and dumped back to earth will create less space debris for now.

I am more for "Airborne Launch Assist Space Access".
This sounds more practical, safe and economical for now. The weight category needed to be increased on this and jets modified to do just precisely this.
This will be good to launch some quality spy satellites into orbit at short notice.

 

[Indx TechStyle]

How economical is this RE ENTRY Stunt for boosters? Economy Vs Time Vs Re-haul cost
IMO, these boosters would sustain enough damage through stress and other factors, making them vulnerable for future Immediate launch...making it ..errmm..errr...

Still cheaper than getting completely new material. Its far easier for us to refabricate & repair things than buying more.

I am more for "Airborne Launch Assist Space Access".

Already a project in study.
There's an air launched rocket planned called "Agnidoot".

 

[sorcerer]

Still cheaper than getting completely new material. Its far easier for us to refabricate & repair things than buying more.

Already a project in study.
There's an air launched rocket planned called "Agnidoot".

Agnidoot..
Wow!! That name suits the nuclear group that we are making exclusively for pakis and chingchongs

 

[Indx TechStyle]

Agnidoot..
Wow!! That name suits the nuclear group that we are making exclusively for pakis and chingchongs

It's from the name of company which has proposed it, called AgniKul.

 

[Indx TechStyle]

Dec 10, 2018
GSAT-11 positioned in Geostationary Orbit

GSAT-11 communication satellite is positioned in its designated Geostationary orbit (with an altitude of about 36000 km) after four orbit raising maneuvers.

The deployment of the largest solar panels and reflectors have been successfully carried out.

Read more

 

[Indx TechStyle]

GSLV-F11 / GSAT-7A Mission

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India’s Geosynchronous Satellite Launch Vehicle (GSLV), in its 13th flight, will launch the 2250 kg operational communication satellite, GSAT-7A from the Second Launch Pad (SLP) of Satish Dhawan Space Centre SHAR, Sriharikota on December 19, 2018.

GSLV-F11 will inject GSAT-7A into a Geosynchronous Transfer Orbit (GTO). The satellite will be placed in its final Geostationary Orbit (GEO) using the onboard propulsion system. It will take few days after separation from launcher to reach its orbital slot.

GSLV – F11 is ISRO’s fourth generation launch vehicle with three stages. The four liquid strap-ons and a solid rocket motor at the core form the first stage. The second stage is equipped with high thrust engine using liquid fuel. The Cryogenic Upper Stage forms the third and final stage of the vehicle.

GSAT-7A is the 35th Indian Communication satellite built by ISRO. GSAT-7A Spacecraft is configured on ISRO’s standard I-2000 Kg (I-2K) Bus. The Satellite is built to provide communication capability to the users in Ku-band over the Indian region.

 

[Indx TechStyle]

GSLV-F11 / GSAT-7A Mission Gallery

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[Indx TechStyle]

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[Indx TechStyle]

Launch Kit
Screenshots from above file.

 

[Shashwat]

^^ Woahh. They are way to early time time releasing all these data.

 

[Indx TechStyle]

^^ Woahh. They are way to early time time releasing all these data.

3 launches in 35 days this time, 10+ next year.
GSLV Mk3 D2 - Nov. 14
PSLV XL C43 - Nov. 29
GSLV Mk2 F11 - Dec. 19

12+ big rockets & 50-60 SSLV launches every year if everything goes smooth from 2020.

 

[republic_roi97]

3 launches in 35 days this time, 10+ next year.
GSLV Mk3 D2 - Nov. 14
PSLV XL C43 - Nov. 29
GSLV Mk2 F11 - Dec. 19

12+ big rockets & 50-60 SSLV launches every year if everything goes smooth from 2020.

And Modi comes back in power .
Is there any news about the new engine that was to be mated with GSLV Mk3 to make it haul 6 tons ??

 

[Indx TechStyle]

And Modi comes back in power .
Is there any news about the new engine that was to be mated with GSLV Mk3 to make it haul 6 tons ??

No update since that news yet.

 

[rishivashista13]

Still cheaper than getting completely new material. Its far easier for us to refabricate & repair things than buying more.

Already a project in study.
There's an air launched rocket planned called "Agnidoot".

I think RLV will be the cheapest and game changer in the satellite placing technology. Will be able to surpass all other rockets in the world

Sent from my Redmi 4A using Tapatalk

 

[Indx TechStyle]

In a first, Isro will make dead rocket stage ‘alive’ in space for experiments

Isro chairman K Sivan
HIGHLIGHTS

• The Indian Space Research Organisation is working on a new technology where it will use the last stage of the PSLV rocket for space experiments
• It will perform a technology demonstration of this new system when it launches the PSLV C44 rocket in January
• The organisation will invite students and scientists to make use of this new technology

NEW DELHI: Can a dead rocket in space be anything but debris? Isro believes it might actually be useful. Feted for its frugality and tech savvy, the Indian Space Research Organisation is working on a new technology where it will use the last stage of the PSLV rocket for space experiments. It will perform a technology demonstration of this new system when it launches the PSLV C44 rocket in January.

Talking to TOI here, Isro chairman K Sivan said, “Normally, the last stage of a PSLV rocket after releasing the primary satellite in space becomes dead and categorised as debris. It remains in the same orbit as that of the released satellite. Now, we are working on a new technology where we will give life to this “dead” last stage of PSLV, also called PS4 stage, for six months after its launch. This rocket stage will double up as a satellite. This will be the most cost-effective way to perform experiments in space as we don’t have to launch a separate rocket for the purpose.” He said that “India is the only country in the world that is working on this new technology”.

Explaining the technology, the chairman said, “The rocket stage of PSLV C44, which will be carrying a microsat as the primary satellite in January, will be made alive with the help of new systems that will include batteries and solar panel. Even after the primary satellite separates from the PSLV, the last stage of the rocket will remain active and can be used as an experimental platform for new space technologies. Students or space scientists can use this “alive” rocket stage for space experiments for free. They can attach their small experimental module or satellite (micro or nano) in the last stage and can perform experiments in space once the PSLV delivers the primary satellite into its orbit.” He said that Isro “can do the same with the GSLV rocket as well where we can use its last stage as an experimental platform”.

Sivan said Isro is going to make an "announcement of opportunity in a few days to invite proposals from students and space scientists to make use of this new technology."

Till now, space agencies around the world can use a rocket only once to deliver satellites in space. Elon Musk-promoted SpaceX is the only exception as the US private space agency has mastered the technology of repeating the same rocket stage for relaunches. However, SpaceX’s experiments with its Falcon 9 rocket are confined to the first stage of the rocket. It has also never experimented with the last stage.