Sriharikota (Andhra Pradesh) [India], October 23 (ANI): Indian Space Research Organisation (ISRO) chairman Dr S Somanath on Sunday said that it is likely to launch its Chandrayan-3 mission in June next year.

Sriharikota (Andhra Pradesh) [India], October 22 (ANI): Indian Space Research Organisation (ISRO) will launch 36 communication satellites in its heaviest rocket in the intervening night of Saturday and Sunday at 12:07 am from Satish Dhawan Space Centre in Andhra Pradesh's Sriharikota.

New Delhi Mar 30 PTI India is eyeing a share in the global satellite launch market and has secured four dedicated launch service contracts with foreign customers the government told Lok Sabha on WednesdayWith the emergence of global broadband communication needs NewSpace India Limited NSIL envisages launches of several of these foreign satellites onboard ISROs SSLV PSLV and GSLV-MkIII Minister of State in PMO Jitendra Singh said in a written reply The Small Satellite Launch Vehicle SSLV is Indias newest launch vehicle to put smaller satellites in low earth orbit Its first developmental flight is expected in May Earlier this month ISRO had successfully carried out the ground testing of the newly developed solid booster stage SS1 for SSLVSingh said NSIL a central public sector enterprise under Department of Space has earned a foreign exchange revenue of 35 million dollars and 10 million euros during the last three years - 2019-21 through launching satellites of various private and international agenciesHe said NSIL has already launched 45 international customer satellites on-board ISROs PSLV during the last three years and has secured four dedicated launch service contracts for foreign satellite customersSingh said NSIL through participation in various international conferences and exhibitions is ensuring a better footprint of ISROs expertise in building earth observation and communications satellites providing launch and mission support services including establishment of ground segments for foreign customers to ensure enhanced foreign exchange revenue earnings for the countryIn reply to a separate question Singh said as part of reforms the government has opened up the space sector for private participation to carry out end-to-end activitiesThe Indian National Space Promotion and Authorization Centre IN-SPACe shall act as the agency to promote handhold and authorize private sector activities in the sector besides enabling sharing of technical facilities and expertise from ISRO he saidWith the operationalization of IN-SPACe the progressively evolving regulatory environment and creation of space industries association in the form of Indian Space Association a greater private sector participation in end-to-end space activities is expected which may result in increased share of India in the global space economy Singh said PTI SKU ZMN

New Delhi Mar 26 PTI A leak valve and low pressure build up in the liquid hydrogen tank that fed the cryogenic engine of Indias heavy-lift rocket GSLV has been identified as the reason for the failure to put Geo Imaging Satellite GISAT-1 into orbit in August last year a report has revealedThe Failure Analysis Committee FAC set up by ISRO found that the GISAT-1 mission failed owing to a damage in the soft seal in a critical valve which resulted in lower pressure in the rockets liquid hydrogen LH2 tank the space agency said on FridayThe FAC found that the failure happened when the Geosynchronous Satellite Launch Vehicle GSLV rockets cryogenic engine was to kick in to take the rocket forwardThe GSLV-F-10 rocket had lifted off normally from Sriharikota on August 12 last year but the mission had to be aborted 307 seconds later as the launch vehicle veered off its charted courseThe FAC concluded that the lower LH2 tank pressure at the time of CUS cryogenic upper stage engine ignition caused by the leakage of Vent and Relief Valve VRV resulted in the malfunctioning of the Fuel Booster Turbo Pump FBTP leading to mission abort command and subsequent failure of the mission the ISRO saidThe most probable reason for the leakage of VRV is attributed to the damage in the soft seal that could have occurred during the valve operations or due to contamination and valve mounting stresses induced under cryogenic temperature conditions it addedThe space agency said the FAC observed that a deviation in performance of the cryogenic engine was observed at 2973 seconds after lift-off due to which the onboard computer aborted the mission at 307 secondsAccording to it the ground servicing of the cryogenic stageengine was normal and the required lift-off conditions were achievedHowever subsequent to lift-off the FAC observed that the build-up of pressure in the propellant liquid hydrogen or LH2 tank during the flight was not normal leading to a lower tank pressure at the time of ignition of the engine the ISRO saidThis resulted in anomalous operation of the Fuel Booster Turbo Pump mounted inside the LH2 tank which feeds the main turbopump of the engine resulting in insufficient flow of liquid hydrogen into the engine thrust chamber the ISRO saidAccording to the ISRO detailed studies indicate that the most likely reason for the observed reduction in LH2 tank pressure is a leak in the respective VRV which is used for relieving the excess tank pressure during flightComputer simulations as well as multiple confirmatory ground tests closely simulating the conditions in the GSLV-F10 flight validated the analysis by the FAC the space agency saidAccording to the ISRO the FAC has submitted comprehensive recommendations to enhance the robustness of the cryogenic engine for future GSLV missionsThe recommendations include an active LH2 tank pressurisation system to be incorporated to ensure sufficient pressure in the LH2 tank at the appropriate time before engine start command strengthening of VRV and associated fluid circuits to avoid the possibility of leakage along with the automatic monitoring of additional cryogenic stage parameters for giving lift-off clearance PTI SKU IJT

New Delhi Mar 25 PTI Low pressure build-up in the liquid hydrogen tank that fed the cryogenic engine due to a faulty valve has been identified as the reason for the failure to put Indias first Geo Imaging Satellite GISAT-1 into orbit in August last year a report has revealedThe Failure Analysis Committee FAC set up by ISRO found that the GISAT-1 mission failed owing to a damage in the soft seal in a critical valve which resulted in lower pressure in the rockets liquid hydrogen LH2 tank the space agency said on Friday The FAC found that the failure happened when the Geosynchronous Satellite Launch Vehicle GSLV rockets cryogenic engine was to kick in to take the rocket forward The GSLV-F-10 rocket had lifted off normally from Sriharikota on August 12 last year but the mission had to be aborted 307 seconds later as the launch vehicle veered off its charted course The FAC concluded that the lower LH2 tank pressure at the time of CUS cryogenic upper stage engine ignition caused by the leakage of Vent and Relief Valve VRV resulted in the malfunctioning of the Fuel Booster Turbo Pump FBTP leading to mission abort command and subsequent failure of the mission the ISRO said The most probable reason for the leakage of VRV is attributed to the damage in the soft seal that could have occurred during the valve operations or due to contamination and valve mounting stresses induced under cryogenic temperature conditions it added The space agency said the FAC observed that a deviation in performance of the cryogenic engine was observed at 2973 seconds after lift-off due to which the onboard computer aborted the mission at 307 seconds According to it the ground servicing of the cryogenic stageengine was normal and the required lift-off conditions were achieved However subsequent to lift-off the FAC observed that the build-up of pressure in the propellant liquid hydrogen or LH2 tank during the flight was not normal leading to a lower tank pressure at the time of ignition of the engine the ISRO said This resulted in anomalous operation of the Fuel Booster Turbo Pump mounted inside the LH2 tank which feeds the main turbopump of the engine resulting in insufficient flow of liquid hydrogen into the engine thrust chamber the ISRO said According to the ISRO detailed studies indicate that the most likely reason for the observed reduction in LH2 tank pressure is a leak in the respective VRV which is used for relieving the excess tank pressure during flight Computer simulations as well as multiple confirmatory ground tests closely simulating the conditions in the GSLV-F10 flight validated the analysis by the FAC the space agency said According to the ISRO the FAC has submitted comprehensive recommendations to enhance the robustness of the cryogenic engine for future GSLV missions The recommendations include an active LH2 tank pressurisation system to be incorporated to ensure sufficient pressure in the LH2 tank at the appropriate time before engine start command strengthening of VRV and associated fluid circuits to avoid the possibility of leakage along with the automatic monitoring of additional cryogenic stage parameters for giving lift-off clearance PTI SKU RHL