Quote from: baldusi on 05/09/2015 06:35 pmAntisksh, where did you got that info? I don't see the programmatic requirement for such a beast in the future, and it sort of goes against the ULV concept, while ignoring any reusability chances. Is ISRO planning on doing 6+ tonne GTO birds? Or are they needing 20tonnes to LEO?HLV to me is a recent development (2014 onwards). the attached article in this post http://forum.nasaspaceflight.com/index.php?topic=36389.msg1371968#msg1371968 mentions that ISRO is conducting studies on HLV. The source of HLV imgae is http://www.vssc.gov.in/VSSC_V4/index.php/technology/heavy-lift-launch-vehicles.About 10 ton satellites, in the words of DR K Sivan :QuoteHe said, the next focus after the Mars mission was towards exploration of the solar system and deep space astronomy. As new applications are being developed, the size of satellites had to be increased and ISRO was planning to develop 10 tons satellites soon.Source
Antisksh, where did you got that info? I don't see the programmatic requirement for such a beast in the future, and it sort of goes against the ULV concept, while ignoring any reusability chances. Is ISRO planning on doing 6+ tonne GTO birds? Or are they needing 20tonnes to LEO?
He said, the next focus after the Mars mission was towards exploration of the solar system and deep space astronomy. As new applications are being developed, the size of satellites had to be increased and ISRO was planning to develop 10 tons satellites soon.
is there any info regarding the semi cryo engine and stage test ? i believe C 25 and Semi cryo development started around the same time but some how semi cryo seems delayed.
IMHO, CLCs as boosters is always an option provided there is a requirement. For CLC diameter, my guess is it would be same as that of heat shield, 5m.
. “While the GSLV Mk3, scheduled to undergo operation flight test in December 2016, will be capable of carrying satellites up to four tonnes, the standard size of satellites is expected to go up to six tonnes in the near future, requiring rockets with more heft,” he explained.
ISRO is toying with the idea of adding a semi-cryogenic stage to the GSLV Mk3 to generate a lift up to six tonnes. A more powerful cryo upper stage is expected to add the required muscle to handle satellites up to 10 tonnes. “What we have in mind is a progressive development to come up with need-based variants of the Mk3 instead of coming up with a new rocket altogether,” Mr. Dathan said.
“The test was not completed as planned. We had to call it off 30 seconds into the test. But we have identified the hitch as a mere measurement anomaly,” said Dr K Sivan, outgoing director of ISRO’s Liquid Propulsion Systems Centre (LPSC), and new chief of the Vikram Sarabhai Space Centre (VSSC). The test will be conducted again in two to three weeks, he said
The LVM3 may benefit from latest Proton failure. Customers will be looking for alternative LV and maybe willing to take a risk with LVM3. ISRO have a good launch record with PSLV, 25 successful launches in a row.
THIRUVANANTHAPURAM: Senior ISRO scientist G Ayyappan today took charge as the Project Director of the prestigious GSLV Mark III programme under development at the Vikram Sarabhai Space Centre (VSSC) here. The programme is aimed at making the country self-reliant by developing rockets capable of launching heavier communication satellites of INSAT-4 class, which weigh 4,500 to 5,000 kg. A graduate in Mechanical Engineering from the College of Engineering in Trivandrum and M Tech from IIT in Madras, he served ISRO in different capacities since 1982, an official release said. He was the Vehicle Director of LVM3-X/CARE mission, the first experimental flight of the Geosynchronous Satellite Launch Vehicle (GSLV) Mark III carried out in December last year, it said. He was the Associate Project Director of GSLV Mk III prior to this post, it said.
Successfully testing a geostationarySakshi | Updated: July 15, 2015 0038 (IST)Sriharikota (sullurupeta): Indian Space Research (ISRO) will in the future in view of the large experiments using technology more in the S -200 strapan booster rocket Sriharikota at 9.30 am on Sunday morning in the center of the Earth static tests to be carried out successfully. On December 18 last year to carry out the experiment jieselvi Mark -3, -200 S booster strapan ability to carry out tests to determine the geostationary won twice. S -200 in the experiment, the scientists found that high pressure boosters. The scientists believe that the future will be in danger, pressure to reduce the size of this series of tests was carried out successfully. In 2016 jieselvi mark3-D-1, said the scientists conducted an experiment of this type boosters. 200 tons of solid fuel filling, the tests were conducted to determine its effectiveness. To ningiloki satellites in the future, about 3 to 5 tons -200 S strapan, such as the need for boosters. S -200 success in tests since bhariprayogalaku tirugundadani say in the future. Pikunhikrsnan Shore program director, associate director, Dr. SV Subba Rao, Director jieselvi Ayyappan, Director Eeswaran S -200 involved in the project.
Successful geostationnary testSakshi | Updated: June 15, 2015 00:38 (IST)Sriharikota (Sullurupeta): The Indian Space Research Organization (ISRO) has successfully conducted the ground fixed tests at the Sriharikota rocket center at 9.30 am on Sunday using more technology in the S-200 strap-on booster for future heavy launches. On December 18, conducted the GSLV Mark-3 launch and two-stage geometry tests were conducted to gain the S-200 strap-on booster efficiency.Scientists have discovered that during the launch pressure was high in the S-200 booster. Scientists, who felt that the future would be at risk, have successfully conducted these tests to reduce pressure. Scientists said that the GSLV Mark3-D1 launch will be conducted in 2016 with this type of boosters. These tests were conducted to fill 200 tons of solid fuel and to know its potential.In the future, we need to use strap-on boosters like the S -200 to send a load of 3 to 5 tonnes of satellites in the future. The S-200 tests are a success and are not going to take place in future. The program was attended by Shr D. P. Kunjikrishnan, Associate Director Dr SV Subba Rao, GSLV Director, Ayyappan, S-200 Project Director Eshwaran.
The static test of S200 motor with 205 tonnes of HTPB-based propellant was successfully carried out
to bring down the dynamic pressure during transonic regime, a modified Head End Segment (HES) grain geometry has been designed and realised.
Static test of S200 motor successfulQuoteThe static test of S200 motor with 205 tonnes of HTPB-based propellant was successfully carried out Quoteto bring down the dynamic pressure during transonic regime, a modified Head End Segment (HES) grain geometry has been designed and realised.
The Indian Space Research Organisation (ISRO) successfully conducted the much-awaited ‘full endurance test’ of the Geosynchronous Satellite Launch Vehicle Mk III’s indigenous cryogenic CE-20 engine at ISRO Propulsion Complex (IPRC) in Mahendragiri in the district on Thursday.The CE-20 was ignited and tested for 800 seconds from 5 p.m. to study the performance of the engine though the actual required duration was only 635 seconds.During the actual flight of the GSLV, the engine will be ignited for only 635 seconds.
He said that the subsystems of CE-20 such as injector, thrust chamber, gas generator, liquid oxygen and liquid hydrogen turbo pumps were tested at the IPRC,
India’s first indigenously designed and developed High Thrust cryogenic rocket engine generating a nominal thrust of 19 tonnes was successfully endurance hot tested for a duration of 800 seconds on July 16, 2015 at ISRO Propulsion Complex, Mahendragiri. This duration is approximately 25% more than the engine burn duration in flight. The engine will be used for powering the Cryogenic stage (C25), the upper stage of the next generation GSLV Mk-III launch vehicle of ISRO, capable of launching four tonne class satellites.This cryogenic engine of C25 Stage operates on Gas Generator Cycle using extremely low temperature propellants – Liquid Hydrogen (LH2) at 20 Kelvin (-253 deg C) and Liquid Oxygen (LOX) at 80K (-193 deg C). The various subsystems of the engine are – regeneratively cooled Thrust Chamber, Gas Generator, LOX and LH2 high speed turbopump systems, flow control components, close loop mixture ratio control system, Pyrogen igniters, fluid systems, etc. The turbopump system rotates at a speed of 36,000 rpm with a power level of 2 MW.
Isro, meanwhile, has put to long-duration test its indigenously developed cryogenic engine for GSLV-Mark-III, which can carry satellites weighing up to four tonnes. "We will launch it by December 2016," Kumar said. India's big missions including the proposed manned mission rests on the shoulders of GSLV-MIII.
Isro is also on the lookout for a launch pad outside Sriharikota, in Kulasekharapattinam in southern Tamil Nadu.
An amount of Rs 470 crore has been allocated for the development of GSLV Mk III launch vehicle in the Twelfth Five Year Plan, said a senior Union Minister today.India's first indigenously designed and developed high thrust cryogenic engine meant for next generation GSLV Mk-III launch vehicle is under advanced stage of development. The engine will be used for powering the India's heaviest rocket under development-geosynchronous satellite launch vehicle (GSLV) Mk-III with a capacity to put into orbit satellites weighing four tonnes.
