Latest news with #EOS-09
India Today
5 days ago
- Science
- India Today
Isro ground PSLV fleet after launch disaster, continues to prep for Nisar launch
Days after the Polar Satellite Launch Vehicle failed moments after launch, the Indian Space Research Organisation (Isro) has temporarily grounded its trusted PSLV development comes following the failure of the PSLV-C61 mission on May 18, which was carrying the advanced EOS-09 earth observation decision comes as a high-level committee investigates the anomaly that led to the rocket's third-stage malfunction, resulting in the loss of the satellite and rocket over the Indian The PSLV, renowned for its 94% success rate with only four failures in 64 missions, encountered a rare setback when the third stage of PSLV-C61 suffered a sudden drop in chamber pressure, causing a loss of the first two stages performing reliably, the third stage's solid-fuel motor did not generate sufficient thrust, and the mission was aborted less than seven minutes after suspect a rupture in the fibre casing of the third-stage motor as a possible cause, with hot gases from the burning fuel potentially entering sensitive EOS-09 satellite, equipped with a sophisticated Synthetic Aperture Radar (SAR) capable of all-weather, day-and-night imaging, was intended to support environmental monitoring, disaster response, and national security loss is a significant operational setback for Isro, but officials remain confident in a swift the PSLV grounding, Isro's other launch vehicles remain for the high-profile Nasa-Isro Synthetic Aperture Radar (Nisar) mission, scheduled for launch in June 2025 aboard a GSLV rocket, are proceeding as Nisar mission, a $1.5 billion collaboration with Nasa, will deploy one of the world's most advanced radar imaging satellites to monitor Earth's changing systems and natural and external expert committees are now scrutinising telemetry and system diagnostics from the failed PSLV mission, with a detailed report expected by officials stress that the temporary grounding of PSLV is a standard safety measure and will not impact the schedule of other critical missions, including Nisar and the upcoming Gaganyaan human spaceflight Isro investigates the rare PSLV failure, its focus remains on ensuring flawless operations for future launches, particularly with ambitious crewed and international missions on the Watch
New Indian Express
6 days ago
- Science
- New Indian Express
Crewed missions ahead, Isro needs zero-flaw operations
The May 18 failure of India's workhorse Polar Satellite Launch Vehicle (PSLV) rocket to deliver sophisticated earth observation satellite EOS-09 to its intended orbit in space is a hard knock for the Indian Space Research Organisation (ISRO). The four-stage PSLV-C61 launcher lifted off with the EOS-09 satellite sharp at 5.59 am from Satish Dhawan Space Centre, Sriharikota. The first two stages performed reliably, but the problem began after the third stage fired. The PSLV-C61 lost thrust, and the remaining third and the fourth stage (latter nestling EOS-09) crashed into the sea. ISRO Chairman V Narayanan suspects it happened due to a fall in pressure in the PSLV-C61's third-stage motor chamber carrying Hydroxyl-terminated Polybutadiene as the solid propellant. Rocket propulsion experts understand that pressure in a rocket motor's combustion chamber can fall due to changes in the burning rate and surface area of the propellant or from issues within the nozzle, whether erosion or burning surface area. This caused a loss of thrust, preventing the PSLV-C61 from reaching the intended altitude of 534 km to release EOS-09 in its orbit and crashing about five minutes after launch.
India Gazette
21-05-2025
- Science
- India Gazette
Preparing for India's first human spaceflight by 2027: ISRO chief after PSLV-C61 mission setback
Bhubaneswar (Odisha) [India], May 21 (ANI): Indian Space Research Organisation's (ISRO) Chairman, V Narayanan said on Wednesday that despite the setback faced in the PSLV-C61/EOS-09 mission, 2025 is still a landmark year for the organisation with Chandrayaan-4, Chandrayaan-5 and three unscrewed missions planned along with preparations underway for the country's first human spaceflight by 2027, known as the 'Gaganyaan' programme. According to the ISRO chief, the PSLV-C61 mission faced a setback during the third stage of the launch due to a drop in the chamber pressure, which subsequently impacted the fourth stage. He said that a national-level committee has been made to investigate the cause of the pressure drop. 'The PSLV-c61 mission faced a setback during the third stage due to a drop in chamber pressure, which impacted the fourth stage performance and led to mission loss. A national-level committee is investigating the cause,' Narayanan told ANI. However, he highlighted the past achievements of the organisation and the future missions planned, showing confidence in India's space programme moving closer to ensuring food, water, and power security. '2025 still remains a landmark year with Chandrayaan-4, Chandrayaan-5, and three uncrewed missions lined up. India's space programme is moving steadily towards ensuring food, water, and power security while preparing for the country's first human spaceflight by 2027,' the ISRO chief said. The ISRO chief is in Bhubaneswar to visit the Central Toolroom and Training Centre (CTTC). In a rare setback, ISRO faced a mission failure on May 18 as its 101st launch -- EOS-09 aboard the PSLV-C61 -- could not be completed due to technical problems in the third stage of the launch vehicle. The launch began at Satish Dhawan Space Centre in Sriharikota, with the first and second stages of the PSLV performing normally. ISRO Chairman V Narayanan said that the trouble arose during the functioning of the third stage and the mission could not be accomplished. The third stage of the launch consists of a solid rocket motor which provides the upper stage with a high thrust after the atmospheric phase of the launch. India's Chandrayaan-4 mission, with the tentative launch date in 2027-28 aims to collect lunar samples and return them to earth. (ANI)
19-05-2025
- Science
Indian space agency's satellite mission fails over technical issue in launch vehicle
NEW DELHI -- The Indian space agency's mission to launch into orbit a new Earth observation satellite failed after the launch vehicle encountered a technical issue during the third stage of flight, officials said Sunday. The EOS-09 Earth observation satellite took off on board the PSLV-C61 launch vehicle from the Sriharikota space center in southern India on Sunday morning. 'During the third stage ... there was a fall in the chamber pressure of the motor case, and the mission could not be accomplished,' said V. Narayanan, chief of the Indian Space Research Organisation. Active in space research since the 1960s, India has launched satellites for itself and other countries, and successfully put one in orbit around Mars in 2014. After a failed attempt to land on the moon in 2019, India became the first country to land a spacecraft near the moon's south pole in 2023 in a historic voyage to uncharted territory that scientists believe could hold reserves of frozen water. The mission was dubbed as a technological triumph for the world's most populous nation.
Hans India
19-05-2025
- General
- Hans India
MyVoice: Views of our readers 19th May 2025
Hyd fire-a chilling reminder of urban neglect The massive fire in Hyderabad that claimed 17 lives on Sunday is yet another reminder of our urban neglect. We build tall dreams on weak foundations—no fire exits, no alarms, no accountability. Safety norms go for a toss. The authorities conduct 'post-tragedy' inspections and in no time forget all about the tragedy that could have been avoided in the first place. People rent or buy properties without even finding out if safety measures are in place. Are we all not complicit? Fire safety in India remains a joke until it kills. We are virtually waiting for disaster to strike. Why are we still ignoring fire codes? Why are illegal structures still rising unchecked? India needs not just infrastructure but consciousness. Can we afford to sleep until flames awaken us? Hasnain Rabbani, Mumbai Buildings in narrow lanes forever at risk It is quite shocking that 17 persons have lost their lives in a major fire mishap near Charminar in Hyderabad on Sunday. Buildings with narrow exits and entrances in an overcrowded area are vulnerable to disasters. It seems that the immediate deployment of fire brigade and rescue operations could not avert the great human loss caused by asphyxia. A very tragic incident. Dr DVG Sankara Rao, Former MP, Vizianagaram-535003 Despite ISRO setback, eyes still on the stars The Indian Space Research Organization (ISRO)'s PSLV-C61/EOS-09 mission could not be accomplished on Sunday due to a technical glitch. Although it appears to be a failure, it serves as an opportunity to learn and move towards further improvement. ISRO's past successes are a testament to its capability, commitment and continuous development. Organisations should test the soundness of the technology that is in use more closely before each launch. Efforts should be made to promote international collaboration so that future missions are more sustainable. Temporary failures, if linked to research and improvement, become the basis for future successes. Mohammad Asad, Mumbai A blow to ISRO's calculations ISRO's 101st mission from Sriharikota, an earth observation satellite onboard the agency's trusted PSLV rocket, could not be accomplished on Sunday following a pressure issue in the third stage of the launch vehicle. Although, the PSLV had a textbook lift-off at the prefixed time of 5.59 am, the mission objectives, however, could not be achieved. The PSLV is a four-stage vehicle and up to the second stage, the performance was normal. The third stage motor started perfectly but developed a problem and the mission could not be accomplished, stated ISRO chairman V. Narayanan. It is a setback to calculations as this all-weather, round-the-clock imaging is vital for applications ranging from agriculture and forestry monitoring to disaster management, urban planning and national security. Bhagwan Thadani, Mumbai Remembering the 'Father of water management and agriculture' Every May 18 is a reminder of the engineering genius Dr KL Rao, who passed away on this day in 1986. Under his visionary leadership many dams were constructed across rivers, including the Nagarjuna Sagar Dam, Srisailam Dam, Pulichintala Dam (also known as KL Rao Sagar). These projects generated electricity, helped channelise water for irrigation and helped us control floods. He was Union Minister for Irrigation and Power for ten years from 1963 to 1973. Andhra University honoured him with a Doctorate in 1960, while the Government of India honoured the distinguished personality with the Padma Bhushan. He is reverentially hailed as the 'Father of water management and agriculture'. Kantamsetti LakshmanRao, Visakhapatnam Heed SC plea for POCSO-centric courts The Supreme Court has asked the Union and State governments to create dedicated courts for handling POCSO cases on a priority basis. This direction shows that the apex court is quite concerned about protecting children from falling victims to sexual offences. It is a very regretful irony that children must live in fear of such barbaric acts. A country will never grow if its children feel insecure. The governments must create dedicated courts on a priority basis. This can help in speedy disposal of such cases, in punishing the perpetrators and shed the fear-psychosis that haunts innocent children. Abdullah Jameel, Mumbai
