Indian Space Capabilities
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PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
SuperNova: PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
Future HLV (Heavy Launch Vehicle)
In an earlier post Super Nova had reported on the preliminary concept of an Indian Lunar manned mission presented at IAC-2009. That concept envisaged the development of a crew launch vehicle and a Cargo Launch Vehicle with payload capabilities of 31 and 84 tons respectively to Low Earth Orbit.
The above image shows another concept Heavy Lift Vehicle (HLV) which would be able to haul 100 tons to LEO. What is interesting in this architecture is that no solid stages would be used on the vehicle. 4 SC460 Semi-cryogenic boosters with the SC800 first stage would generate the lift-off thrust for the vehicle. The C100 upper stage would probably serve as an Earth Departure stage (EDS) .
In addition to the HLV, the presentation slide also gives us an idea of the role that the GSLV-Mk III would play in lead up to Lunar manned mission and more importantly in the Indian Human Spaceflight Program.
As we know the present Human Spaceflight concept envisages the development of a crew capsule (Orbital Vehicle) which would be launched by the GSLV-Mk II. This capsule would probably not feature any docking system due to restriction in the payload capacity of GSLV-Mk II (around 5 tons).
Given the greater capability of Mk-III, ISRO plans to use the vehicle to launch a bigger, better equipped crew capsule which would be use to demonstrate rendezvous and docking in addition Extra Vehicular Activity (EVA).
A slide for Dr. B N Suresh's presentation titled 'Indian Space Transportation System: Present Scenario and Future Directions' at TIFR-Mumbai, 19th June 2009 Credit:ISRO
GSLV mk-III flight scheduled for 2011/12
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PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
SuperNova: PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
Future HLV (Heavy Launch Vehicle)
In an earlier post Super Nova had reported on the preliminary concept of an Indian Lunar manned mission presented at IAC-2009. That concept envisaged the development of a crew launch vehicle and a Cargo Launch Vehicle with payload capabilities of 31 and 84 tons respectively to Low Earth Orbit.
The above image shows another concept Heavy Lift Vehicle (HLV) which would be able to haul 100 tons to LEO. What is interesting in this architecture is that no solid stages would be used on the vehicle. 4 SC460 Semi-cryogenic boosters with the SC800 first stage would generate the lift-off thrust for the vehicle. The C100 upper stage would probably serve as an Earth Departure stage (EDS) .
In addition to the HLV, the presentation slide also gives us an idea of the role that the GSLV-Mk III would play in lead up to Lunar manned mission and more importantly in the Indian Human Spaceflight Program.
As we know the present Human Spaceflight concept envisages the development of a crew capsule (Orbital Vehicle) which would be launched by the GSLV-Mk II. This capsule would probably not feature any docking system due to restriction in the payload capacity of GSLV-Mk II (around 5 tons).
Given the greater capability of Mk-III, ISRO plans to use the vehicle to launch a bigger, better equipped crew capsule which would be use to demonstrate rendezvous and docking in addition Extra Vehicular Activity (EVA).
A slide for Dr. B N Suresh's presentation titled 'Indian Space Transportation System: Present Scenario and Future Directions' at TIFR-Mumbai, 19th June 2009 Credit:ISRO
GSLV mk-III flight scheduled for 2011/12
they should work on the title
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PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
The presentation titled 'Indian Space Transportation System - Present Scenarion and Future Directions' presented by Dr. B.N.Suresh on 19th June, 2009 at TIFR, Mumbai. Credit:ISRO
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Important Observations:
Slide 20 gives us an idea of the Indian interplanetary missions on the drawing board. The slide also gives the orbital and fly-by payload capacities of PSLV, GSLV and GSLV -Mk III to Mars, Venus and Asteroid (very vague definition in this case) respectively. The approximate date for robotic missions to Venus and asteroids is mentioned in Slide 34 as 2018 (Interplanetary missions beyond Mars). The Martian mission according to ISRO will take place only after 2015.
Slide 20 mentions the performance specifications of GSLV-Mk III i.e 4.5 tons to GTO and 10 tons to 400 km LEO. In addition it clearly specifies the growth potential to as 5 to 6 tons to GTO, a previously speculated figure. Slide 14 illustrates the flight sequence of Mk III.
Slide 25-Slide 28 gives some information of the RLV program. Slide 25 is the image of RLV-TD. Slide 26 shows the RLV with an air-breathing engine. Slides 27 and 28 shows the configuration and flight profile of an RLV-TSTO (Two Stage to Orbit) version.
Slides 29-33 has information regarding the Indian Human Spaceflight Programme. The slides give information about the crew vehicle and the human-rated GSLV that would launch it and the mission profile. Slide 33 has already been discussed in detail in an earlier post.
Posted by Gopala Krishna at 9:39 PM
SuperNova: PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
Slide 20 gives us an idea of the Indian interplanetary missions on the drawing board. The slide also gives the orbital and fly-by payload capacities of PSLV, GSLV and GSLV -Mk III to Mars, Venus and Asteroid (very vague definition in this case) respectively. The approximate date for robotic missions to Venus and asteroids is mentioned in Slide 34 as 2018 (Interplanetary missions beyond Mars). The Martian mission according to ISRO will take place only after 2015.
Slide 20 mentions the performance specifications of GSLV-Mk III i.e 4.5 tons to GTO and 10 tons to 400 km LEO. In addition it clearly specifies the growth potential to as 5 to 6 tons to GTO, a previously speculated figure. Slide 14 illustrates the flight sequence of Mk III.
Slide 25-Slide 28 gives some information of the RLV program. Slide 25 is the image of RLV-TD. Slide 26 shows the RLV with an air-breathing engine. Slides 27 and 28 shows the configuration and flight profile of an RLV-TSTO (Two Stage to Orbit) version.
Slides 29-33 has information regarding the Indian Human Spaceflight Programme. The slides give information about the crew vehicle and the human-rated GSLV that would launch it and the mission profile. Slide 33 has already been discussed in detail in an earlier post.
Posted by Gopala Krishna at 9:39 PM
SuperNova: PICTURES: Indian Space Transportation System - Present Scenario and Future Directions
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51-hour countdown for PSLV-C15 to start tomorrow
The 51-hour countdown for the 17th flight launch of Indian space agency's Polar Satellite Launch Vehicle PSLV-C 15 from Sriharikota spaceport is expected to begin on Saturday morning. Preparations were in full swing for the launch of the PSLV-C-15 on July 12. All the parameters for the launch were
doing well and the 51-hour countdown was expected to start at 6 am on Saturday, Indian Space Research Organisation (ISR0) officials said.
"The rocket will put into orbit five satellites remote sensing satellite Cartosat-2B from India, Alsat from Algeria, two nano satellites from Canada and Switzerland, and a pico (very small) satellite called Studsat built by seven engineering students in Andhra Pradesh and Karnataka", ISRO spokesmen S Satish told PTI.
The PSLV launch was to take place on May 9 last but was postponed because of a drop in the pressure in the vehicle's second stage.
This would be the first mission by ISRO after the failure of India's ambitious home-made cryogenic engine powered GSLV-D3 in April last.
He said, "In this flight, PSLV will place the 694 kg Cartosat-2B and four auxiliary payloads in a 630 km Polar Sun Synchronous Orbit (SSO)".
The four-stage vehicle had been fully assembled in its launch pad and the mating with Cartosat-2B and other satellites had been completed.
He said the satellite would help in urban planning and infrastructure development such as laying ring-roads and rerouting of highways.
"Cartosat-2B carries a panchromatic camera similar to that of its predecessors - Cartosat-2 and 2A", he said adding it was capable of imaging a swath (geographical strip of land) of 9.6 km with a resolution of 0.8 metre.
:: Bharat-Rakshak.com - Indian Military News Headlines ::
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Have a grand success this time
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Lack of liquid hydrogen in engine may have caused GSLV failure
Non-availability of liquid hydrogen supply to the thrust chamber of the main engine could have resulted in failure of the third developmental flight of Geosynchronous Satellite Launch Vehicle from Sriharikota on April 15, a failure analysis committee has found.
The flight of GSLV-D3 primarily meant for testing of indigenously developed cryogenic upper stage (CUS) had failed to achieve the mission objectives following which ISRO had instituted a two-tier process to carry out an in-depth analysis of the flight performance and identify the causes of the failure and recommend corrective measures.
As per review of the findings by the ?National Group of Eminent Experts?, though the ignition of the CUS main engine and two steering engines were confirmed normal, the thrust build up did not progress as expected ?due to non-availability of liquid hydrogen (LH2) suppy to the thrust chamber of the main engine?, an ISRO release said.
The failure is attributed to the anomalous stopping of fuel booster turbo pump (FBTP). ?The start-up of FBTP was normal. It reached a maximum speed of 34,800 rpm and continued to function as predicted after the start of CUS. However, the speed of FBTP started dipping after 0.9 seconds and it stopped within the next 0.6 seconds,? it said.
Two plausible scenarios have been identified for failure of FBTP, gripping at one of the seal locations and seizure of rotor and a rupture of turbine casing caused probably due to excessive pressure rise and thermal stresses, it said.
As per the review, following a smooth countdown, the lift-off took place at 1627 hrs (IST) as planned. All four liquid strap-on stages (L40), solid core stage (S139) and liquid second stage (GS2) functioned normally, it said.
The Hindu : Sci-Tech / Science : Lack of liquid hydrogen in engine may have caused GSLV failure
Non-availability of liquid hydrogen supply to the thrust chamber of the main engine could have resulted in failure of the third developmental flight of Geosynchronous Satellite Launch Vehicle from Sriharikota on April 15, a failure analysis committee has found.
The flight of GSLV-D3 primarily meant for testing of indigenously developed cryogenic upper stage (CUS) had failed to achieve the mission objectives following which ISRO had instituted a two-tier process to carry out an in-depth analysis of the flight performance and identify the causes of the failure and recommend corrective measures.
As per review of the findings by the ?National Group of Eminent Experts?, though the ignition of the CUS main engine and two steering engines were confirmed normal, the thrust build up did not progress as expected ?due to non-availability of liquid hydrogen (LH2) suppy to the thrust chamber of the main engine?, an ISRO release said.
The failure is attributed to the anomalous stopping of fuel booster turbo pump (FBTP). ?The start-up of FBTP was normal. It reached a maximum speed of 34,800 rpm and continued to function as predicted after the start of CUS. However, the speed of FBTP started dipping after 0.9 seconds and it stopped within the next 0.6 seconds,? it said.
Two plausible scenarios have been identified for failure of FBTP, gripping at one of the seal locations and seizure of rotor and a rupture of turbine casing caused probably due to excessive pressure rise and thermal stresses, it said.
As per the review, following a smooth countdown, the lift-off took place at 1627 hrs (IST) as planned. All four liquid strap-on stages (L40), solid core stage (S139) and liquid second stage (GS2) functioned normally, it said.
The Hindu : Sci-Tech / Science : Lack of liquid hydrogen in engine may have caused GSLV failure
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