Author Topic: ISRO General News  (Read 261996 times)

Online vineethgk

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Re: ISRO General News
« Reply #720 on: 03/28/2018 05:52 AM »
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The next generation Vikas engine developed by the Liquid Propulsion Systems Centre (LPSC) is being flown for the first time. LPSC director V Narayanan told Express that the improved engine would give a significant advantage in terms of enhancing payload capability. “Usually, the chamber pressure is 58 bar, but with the use of high-thrust Vikas engine, we will achieve 62 bar, which is a 6% increase in thrust that gives us 70 kgs of additional payload gain in this mission. Right now, we are going to use the high-thrust Vikas engine only in the second stage. Basically, we are validating it. For Chandrayaan-2 mission, we will be using five such engines aiming for a payload gain of around 250 kgs,” Narayanan said.

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Narayanan said this would be the best way of mission planning and optimum utilisation of propellants. “All these new things are being done keeping lunar mission in the mind and ISRO’s bigger game plan to increase GSLV payload capability. For Chandrayaan-2, we are formulating a perfect combination. The four strap-ons and second stage will be boosted with high-thrust Vikas engines; cryogenic upper stage will be loaded with enhanced propellants of 15 tonnes instead of current 12.8 tonnes and will be operated with 9.5 tonne thrust compared to the present 7.5.”

Source: http://www.newindianexpress.com/states/tamil-nadu/2018/mar/28/with-eye-on-lunar-mission-isro-to-test-high-thrust-vikas-engine-1793608.html

ISRO confirms that GSLV F-10 will be first fully upgraded GSLV. All four L40 strapons will have high thrust vikas engines and well as the second stage. The upper stage will have propellant loading increased to 15 tons and thrust of CE-7.5 engine will be increased from present 7.5 tons to 9.5 tons.

Payload capability to GTO for GSLV has been increased by 70kg for GSLV F-08 mission to bring the GTO capability of GSLV up from 2.25 tons to 2.32 tons. With additional upgrades on GSLV F-10 mission later this year this will further boost GTO capability by 250 kg to bring GSLV GTO capability to 2.57 tons.

In short:

Current GSLV GTO capability: 2.25 tons

GSLV F-08 GTO capability: 2.32 tons 

GSLV F-10 GTO capability: 2.57 tons

ISRO final goal for GSLV : 3.25 tons to GTO
Perhaps this post can be reposted/moved to the GSLV discussion thread here so that we can have all the updates regarding ongoing GSLV upgrades in one place.

Offline K210

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Re: ISRO General News
« Reply #721 on: 03/28/2018 07:05 AM »
Quote
The next generation Vikas engine developed by the Liquid Propulsion Systems Centre (LPSC) is being flown for the first time. LPSC director V Narayanan told Express that the improved engine would give a significant advantage in terms of enhancing payload capability. “Usually, the chamber pressure is 58 bar, but with the use of high-thrust Vikas engine, we will achieve 62 bar, which is a 6% increase in thrust that gives us 70 kgs of additional payload gain in this mission. Right now, we are going to use the high-thrust Vikas engine only in the second stage. Basically, we are validating it. For Chandrayaan-2 mission, we will be using five such engines aiming for a payload gain of around 250 kgs,” Narayanan said.

Quote
Narayanan said this would be the best way of mission planning and optimum utilisation of propellants. “All these new things are being done keeping lunar mission in the mind and ISRO’s bigger game plan to increase GSLV payload capability. For Chandrayaan-2, we are formulating a perfect combination. The four strap-ons and second stage will be boosted with high-thrust Vikas engines; cryogenic upper stage will be loaded with enhanced propellants of 15 tonnes instead of current 12.8 tonnes and will be operated with 9.5 tonne thrust compared to the present 7.5.”

Source: http://www.newindianexpress.com/states/tamil-nadu/2018/mar/28/with-eye-on-lunar-mission-isro-to-test-high-thrust-vikas-engine-1793608.html

ISRO confirms that GSLV F-10 will be first fully upgraded GSLV. All four L40 strapons will have high thrust vikas engines and well as the second stage. The upper stage will have propellant loading increased to 15 tons and thrust of CE-7.5 engine will be increased from present 7.5 tons to 9.5 tons.

Payload capability to GTO for GSLV has been increased by 70kg for GSLV F-08 mission to bring the GTO capability of GSLV up from 2.25 tons to 2.32 tons. With additional upgrades on GSLV F-10 mission later this year this will further boost GTO capability by 250 kg to bring GSLV GTO capability to 2.57 tons.

In short:

Current GSLV GTO capability: 2.25 tons

GSLV F-08 GTO capability: 2.32 tons 

GSLV F-10 GTO capability: 2.57 tons

ISRO final goal for GSLV : 3.25 tons to GTO
Perhaps this post can be reposted/moved to the GSLV discussion thread here so that we can have all the updates regarding ongoing GSLV upgrades in one place.

I posted this in the general thread as it is more active however i have also made a replica post in the GSLV thread here: https://forum.nasaspaceflight.com/index.php?topic=33622.100

Online vineethgk

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Re: ISRO General News
« Reply #722 on: 04/05/2018 04:02 AM »
Spent PS4 stage from PSLV-C19 flight that launched RISAT-1 has re-entered over the Central Atlantic
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V Adimurthy, advisor to Isro and former Inter-Agency Space Debris Coordination Committee (IADC) chairman, confirmed that the orbital debris re-entered the space atmosphere on April 3 evening.

Astrophysicist Jonathan McDowell of the Harvard Smithsonian for Astrophysics tweeted, “The 1-tonne PS4 rocket stage from @ISRO’s 2012 PSLVC19 launch reentered over the central Atlantic at 1406 UTC Apr 3.”

Online vineethgk

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Re: ISRO General News
« Reply #723 on: 04/13/2018 02:17 AM »
Kerala govt setting up aerospace park in state capital to build an ecosystem for space companies in cooperation with ISRO
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A senior VSSC official told Manorama Online that the project aims to provide the ecosystem for companies which are interested in joining the space efforts. “No investment will be made by the ISRO in the project. But the companies opening units in the park will get expert advice from the organization. Moreover, we will ensure that the companies have the right environment for functioning. If the companies are interested, ISRO will also purchase their products,” he said.
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As several organizations dealing with aerospace, including VSSC, are already functioning in Kerala, the park will be a big success, feels the state government.

Online vineethgk

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Re: ISRO General News
« Reply #724 on: 04/15/2018 02:08 PM »
CNES and ISRO holding discussions on joint missions to Venus and Mars
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Space agencies of India and France have been holding discussions to work on inter-planetary missions to Mars and Venus, a French source said. This comes almost a month after the two sides agreed on a joint statement for an enhanced space cooperation. The Indian Space Research Organisation (ISRO) and French National Space Agency (CNES) had agreed to work together on autonomous navigation of rovers on Moon, Mars and other planets, and aero braking technologies for planetary exploration.
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“Venus is under-explored compared to Mars. This is why we want to concentrate on Venus. ISRO has confirmed this priority for them. Discussions are also going on for the future Indian Mars mission,” said a CNES official.
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In particular, CNES could provide support to ISRO for the navigation of future moon rovers while the two will jointly work on the models to study Mars and Venus atmospheres, the CNES official said. CNES could be involved in the definition of the scientific goals and preparatory studies for the future planetary missions of ISRO and both agencies will study the possibility of embarking French science instruments on board the future interplanetary (Moon, Mars and asteroids) Indian missions, the official said.

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