Latest news with #EarthObservationSatellite
Yahoo
18-05-2025
- Science
- Yahoo
Indian space agency's rocket fails to deploy satellite for Earth observation
May 18 (UPI) -- India failed in its attempt to launch a satellite to observe Earth when the third stage failed, the nation's space agency said Sunday. The Indian Space Research Organization's EOS-09 spacecraft lifted off atop a Polar Satellite Launch Vehicle rocket from Satish Dhawan Space Center in Sriharikota at 5:59 a.m. local time Sunday. There have been 101 launches from Sriharikota, which is 1417 miles from New Delhi, including three to the moon and one to Mars. The satellite was lost because of an issue with the third stage of the rocket about six minutes after launch. "Third stage, motor started perfectly, but during the functioning of the third stage, we are seeing an observation, and the mission could not be accomplished," ISRO Chairman V. Narayanan said in a televised statement after the launch. "Third stage, motor started perfectly, but during the functioning of the third stage, we are seeing an observation, and the mission could not be accomplished. After analysis, we shall come back." ISRO posted on X that "the mission could now be accomplished. The 3,735-pound satellite was to be deployed from the upper stage about 18 minutes after liftoff at an altitude of 332 miles. This was to be India's ninth mission in India's Earth Observation Satellite series. The satellite included a synthetic aperture radar payload, which had been been successfully deployed in other missions. The satellites can observe Earth day and night, including cloud cover. India Today noted the round-the-clock, reliable intelligence is significant among security concerns along India's borders with Pakistan and China. India was the first country to land a spacecraft near the moon's south pole in 2023. This is an arrea scientists believe could hold reserves of frozen water.
UPI
18-05-2025
- Science
- UPI
Indian space agency's rocket fails to deploy satellite for Earth observation
May 18 (UPI) -- India failed in its attempt to launch a satellite to observe Earth when the third stage failed, the nation's space agency said Sunday. The Indian Space Research Organization's EOS-09 spacecraft lifted off atop a Polar Satellite Launch Vehicle rocket from Satish Dhawan Space Center in Sriharikota at 5:59 a.m. local time Sunday. There have been 101 launches from Sriharikota, which is 1417 miles from New Delhi, including three to the moon and one to Mars. The satellite was lost because of an issue with the third stage of the rocket about six minutes after launch. "Third stage, motor started perfectly, but during the functioning of the third stage, we are seeing an observation, and the mission could not be accomplished," ISRO Chairman V. Narayanan said in a televised statement after the launch. "Third stage, motor started perfectly, but during the functioning of the third stage, we are seeing an observation, and the mission could not be accomplished. After analysis, we shall come back." ISRO posted on X that "the mission could now be accomplished. The 3,735-pound satellite was to be deployed from the upper stage about 18 minutes after liftoff at an altitude of 332 miles. This was to be India's ninth mission in India's Earth Observation Satellite series. The satellite included a synthetic aperture radar payload, which had been been successfully deployed in other missions. The satellites can observe Earth day and night, including cloud cover. India Today noted the round-the-clock, reliable intelligence is significant among security concerns along India's borders with Pakistan and China. India was the first country to land a spacecraft near the moon's south pole in 2023. This is an arrea scientists believe could hold reserves of frozen water.
United News of India
18-05-2025
- Science
- United News of India
PSLV-C61/EOS-09 mission not accomplished due to tech glitch : ISRO Chief
Sriharikota, May 18 (UNI) The PSLV-C61 mission carrying Earth Observation Satellite EOS-09 could not be accomplished on Sunday morning due to a technical glitch in ignition and separation of the third stage of the 4-stage rocket. ISRO Chairman V Narayanan told reporters that the mission could not be accomplished after it encountered some anomaly in its third stage. He said the rocket took off as scheduled at 0559 hrs and the ignition and separation of the first two stages were normal. However, during ignition and separation of the third stage (with solid propellants) a technical glitch was witnessed. "We are analysing it", he said, adding, the mission could not be accomplished. 'Today we targeted the 101st launch from Sriharikota, the PSLVC61 EOS-09 mission. The PSLV is a four-stage vehicle and up to the second stage, the performance was normal. The third stage motor started perfectly but during the functioning of the third stage we witnessed an anomaly and the mission could not be accomplished,' Mr. Narayanan said. Today 101st launch was attempted, PSLV-C61 performance was normal till 2nd stage. Due to an observation in 3rd stage, the mission could not be accomplished, he added. The EOS-09 satellite is seen as a game changer for surgical air strikes in the wake of prevailing tensions on the Pakistan and China borders and would provide high resolution border images using its onboard C-Band Synthetic Aperture Radar which will capture pictures on all weather conditions, day and night. After a 22-hr countdown, the workhorse and reliable launch vehicle of ISRO PSLV-C61 with strap-on motors lifted off majestically from the First Launch Pad lighting the dark skies at 0559 hrs, after initiating the launch sequence by the Mission Director 15 mts from take off, before th technical glitch in the third stage led to its failure. UNI GV 0700
India Today
18-05-2025
- Science
- India Today
PSLV-C61 mission fails: Former Isro scientist explains what happens next
The Indian Space Research Organisation (Isro) launched the Polar Satellite Launch Vehicle at 5:59 a.m. IST from Sriharikota's Satish Dhawan Space Centre, but the rocket veered off trajectory during the critical third-stage burn ending up in a major was carrying the Earth Observation Satellite (EOS-09) to space in a bid to give India an all-weather imaging HAPPENS NOW?When a space mission fails, Isro initiates a meticulous and systematic process to analyse the failure and identify its root cause. This process is critical to ensure future missions are safer and more how Isro typically approaches the analysis of a lost mission, such as a launch failure. The first step is to form a Failure Analysis Committee (FAC), comprising experts from various Isro centers, including engineers, scientists, and mission specialists. This team is tasked with reviewing all available data from the a launch, Isro's telemetry systems collect vast amounts of real-time data, such as velocity, altitude, pressure, temperature, and engine performance. For instance, in the case of a failure like the PSLV-C61/EOS-09 mission, where velocity dropped unexpectedly, the FAC would examine telemetry graphs showing parameters like the sharp decline in relative velocity (from 6 km/s to 2.45 km/s) and the corresponding altitude and trajectory FAC will thoroughly review the flight data along with all data related to the activities ranging from the stage preparation at the launch complex, countdown to the committee analyses the flight data to pinpoint the exact moment of deviation. With EOS-09, India aimed to strengthen its position in space-based earth observation. (Photo: Isro) This involves comparing actual performance against the expected profile—such as the target velocity curve after satellite separation. If the data shows anomalies, like engine shutdowns or structural issues, the team cross-references it with ground-based radar and tracking station inputs to reconstruct the sequence of events. For example, if the third stage (PS3) malfunctioned, the team would investigate propulsion system logs and closed loop guidance also conducts simulations and reviews the rocket's design and manufacturing processes. This includes checking for potential flaws in components, such as engines, avionics, or guidance software algorithms controlling the rocket's navigation and control systems are audited for FAC then compiles a detailed report, identifying the root cause—be it a mechanical failure, human error, or external factors like are made to address the issue, such as design modifications or procedural the PSLV-C1 failure in 1993 due to a software glitch and EOS03 failure due to tank pressurization issue in GSLV CUS, Isro revamped its testing protocols and active mechanisms to attain required rigorous process ensures that each failure becomes a stepping stone for future success, enhancing Isro's reliability in space exploration.(Manish Purohit is a former Isro scientist with vast experience in managing critical space missions and solar energy projects, including Mangalyaan and Chandrayaan-2 missions.)
Economic Times
18-05-2025
- Science
- Economic Times
ISRO's PSLV-C61 EOS-09 launch aborted midway; ISRO Chief V. Narayanan explains why
PTI Sriharikota: ISRO chairman V Narayanan addresses media after PSLV-C61 rocket carrying Earth Observation Satellite (EOS-09) lifted off from the first launch pad, in Sriharikota. After a precise liftoff, Chairman V Narayanan said that the mission could not be accomplished as planned. (PTI Photo/R Senthilkumar) India's 101st space mission from Sriharikota suffered a major setback early Sunday when the Indian Space Research Organisation (ISRO) failed to complete the launch of its Earth observation satellite EOS-09. The mission lifted off as scheduled at 5:59 AM from the Satish Dhawan Space Centre but encountered an anomaly in the third stage of the Polar Satellite Launch Vehicle (PSLV-C61).'Today we targeted the 101st launch from Sriharikota, the PSLV-C61 EOS-09 mission. The PSLV is a four-stage vehicle and up to the second stage, the performance was normal. The third stage motor started perfectly but during the functioning of the third stage we are seeing an observation and the mission could not be accomplished,' ISRO Chairman V Narayanan said in a post-launch added, '...and the motor pressure—there was a fall in the chamber pressure of the motor case and the mission could not be accomplished. We are studying the entire performance, we shall come back at the earliest.' Though the PSLV-C61 launched without delay and performed reliably through its first two stages, the solid-fuel third stage failed to maintain the required pressure. This disruption halted the progress of the 1,696.24 kg EOS-09 satellite, which was designed for all-weather, day-and-night Earth observation. The rocket, towering at 44.5 metres and weighing 321 tonnes, was carrying the high-performance Synthetic Aperture Radar (SAR) payload, intended to support sectors like agriculture, disaster response, urban planning, forestry and national security. The mission was also structured to be debris-free, with fuel reserved for de-orbiting the satellite after its operational life to prevent long-term space debris. This mission was the 63rd overall flight of the PSLV and the 27th using its heavier-lifting XL configuration. PSLV failures are rare. Since its first flight in 1993, ISRO has recorded just three setbacks, including Sunday's mission. The previous failures were PSLV-D1 in 1993 and PSLV-C39 in 2017, the latter due to a faulty heat shield that prevented satellite deployment. The current failure is expected to prompt an internal review as well as the formation of a Failure Analysis EOS-09 satellite, similar to the EOS-04 launched in 2022, was developed to enhance the frequency and reliability of remote sensing data. The SAR payload inside the satellite could have delivered high-resolution images even in cloudy or dark conditions—key for precision-based resource has confirmed that a detailed review will be undertaken to assess what went wrong. 'Today 101st launch was attempted, PSLV-C61 performance was normal till 2nd stage. Due to an observation in 3rd stage, the mission could not be accomplished,' ISRO stated on its official X told CNN-News18 that a Failure Analysis Committee (FAC) will be set up to probe the issue. The FAC will include ISRO experts and members from the academic sector, and is likely to be headed by a former ISRO Chief or a senior retired scientist. The committee will comb through flight data, launch preparations, and all associated ISRO has not yet released its final technical report, Chairman Narayanan's assurance suggests the agency will soon regroup for another attempt. 'After analysis we shall come back,' he Sunday's setback, ISRO maintains a strong reputation for dependable launch missions. The EOS-09 failure may delay upcoming plans temporarily, but it also offers the opportunity to reinforce technical now, the space agency turns inward to evaluate its systems and regain momentum. India's ambitious space programme—marked by achievements like the Chandrayaan and Mars missions—remains undeterred. The mission may have failed, but the resolve remains intact.(With inputs from ANI, PTI)
