Tag Archives: Satish Dhawan Space Centre – SHAR – Sriharikota

GLOBAL: SPACE / MOON LANDING: Chandrayaan 3’s landing site name ‘Shiv Shakti’ gets International Astronomical Union (IAU) recognition

Chandrayaan 3’s moon lander’s landing site was named Shiv Shakti on August 26 by Prime Minsiter Narendra Modi.

Prime Minister Narendra Modi on August 26 had announced that the landing site of Chandrayaan 3’s moon lander would be named Shiv Shakti. Six months later, the internationally recognised body for nomenclature of celestial objects has officially granted it recognition.

International Astronomical Union (IAU) Working Group for Planetary System Nomenclature on Tuesday approved the name ‘Statio Shiv Shakti’ for the landing site of Chandrayaan’s Vikram lander.

Chandrayaan 3 — India’s moonshot

Chandrayaan 3, India’s third lunar mission, took off from the Indian Space Research Organisation (ISRO) Satish Dhawan Space Centre in Sriharikota on July 14. After about a month, on August 23, the Vikram lander successfully touched down on the moon, along with the Pragyan Rover. This historic achievement positioned India as the first country to land near the lunar South Pole and only the fourth to achieve a controlled lunar landing.

Following 10 days of exploration on the lunar surface, both the lander and rover entered sleep mode. Meanwhile, the propulsion module remains in lunar orbit after separating from the lander.

What is Shiv Shakti point?

On August 26, PM Narendra Modi declared that the landing site of Chandrayaan 3’s moon lander would be named Shiv Shakti .

“In Shiv, there is a resolution for the welfare of humanity, and Shakti gives us strength to fulfil those resolutions,” said Modi, while announcing the name.

The IAU’s Gazetteer of Planetary Nomenclature, where the name was officially published, described it as a compound word from Indian mythology representing the masculine (“Shiva”) and feminine (“Shakti”) duality of nature.

Why are celestial bodies named?

Planetary nomenclature is like naming places on Earth. It helps us identify and talk about specific features on planets and moons. This list, created by the International Astronomical Union (IAU), includes all the names given to different spots on planets, moons, and even some ring systems since 1919. It makes it easier for scientists to locate and describe these places.

source/content: hindustantimes.com (headline edited)

INDIA IN SPACE: Chandrayaan-3: First orbit-Raising Maneuver Successfully Performed, says ISRO

Scientists at the Indian Space Research Organisation have performed the first orbit raising maneuver of the Chandrayaan-3 spacecraft on Saturday.

Scientists at the Indian Space Research Organisation have performed the first orbit raising maneuver of the Chandrayaan-3 spacecraft on Saturday, the space agency said. The health of the spacecraft was “normal”, ISRO said in a social media post. Chandrayaan-3 is now in an orbit, which when closest to Earth is at 173 km and farthest from Earth is at 41,762 km, the space agency said.

“Chandrayaan-3 Mission update: The spacecraft’s health is normal. The first orbit raising manoeuvre (Earthbound firing-1) was successfully performed at ISTRAC/ISRO, Bengaluru. Spacecraft is now in 41762kms x 173kms orbit,” ISRO said.

ISRO on July 14 successfully launched the third edition of its Moon exploration programme from the Satish Dhawan Space Centre, Sriharikota, aimed at making a soft landing on the unexplored south pole of the Moon that would make India achieve a rare feat.

Only three countries, the United States, China and Russia, have managed to land on the lunar surface so far.

source/content: hindustantimes.com (headline edited)

NATIONAL: SPACE / SATELLITES &TECHNOLOGY: ISRO Successfully Launches SSLV’s 2nd Developmental Flight with 3 Satellites from Sriharikota

The new rocket launch from Sriharikota has put three satellites into a 450 km-circular orbit during its 15-minute flight .

The Indian Space Research Organisation (ISRO) successfully launched its second developmental flight of a Small Satellite Launch Vehicle — SSLV-D2 — and placed three satellites in its precise orbit on February 10 morning.

The three satellites are ISRO’s Earth Observation Satellite – EOS 07, U.S.-based firm Antaris’ Janus-1 and Chennai-based space start-up SpaceKidz’s AzaadiSAT-2. 

SSLV-D2 lifted off from the first launch pad at Satish Dhawan Space Centre-SHAR, Sriharikota at 9:18 a.m. This is the first satellite launch in 2023.

“The SSLV-D2-EOS-07 mission is successfully accomplished,” ISRO mentioned on its Twitter handle, a few minutes after the vehicle took off. ISRO in a statement said: “The vehicle injected satellites into close to 450 km circular orbit at an inclination of 37.2 degrees. The tracking network took control of EOS-07 satellite. Deployment of the solar panels and the generation of power is confirmed.”

ISRO Chairman S. Somanath said, “In its second attempt SSLV-D2 has placed the EOS-07 satellite in its intended orbit very accurately. Two more satellites -Janus-1 and AzaadiSAT-2 were also placed in the required orbit.”

The Chairman further said: “SSLV had its maiden flight SSLV-D1 and we had a narrow miss of placing the satellite in the orbit because of a shortfall in velocity. I’m happy to report that we have analysed the problems faced in SSLV D1 – identified the corrective actions and implemented it. We went through lot of studies to ensure that the vehicle will become success this time,” he added. 

“And I’m happy this has been executed in reality. The orbit achieved by the vehicle today is exceedingly good,” Mr. Somanath said.

Noting that this journey began in 2018, S.S. Vinod, Mission Director of SSLV, said, “We had the maiden flight in August 2022 and we could not place the satellite in the intended orbit. Post that detailed analysis with a number of teams was carried out and we were able to pinpoint the problem in the system . We overcame that.”

He added, “And in a period of five months we have come back. And we will be coming back soon with the next launch of SSLV.”

It may be recalled that the first developmental flight of SSLV lifted off from Satish Dhawan Space Centre on August 7, 2022, and ended up to be a partial failure, as the rocket failed to inject its satellite payload in their intended orbits.

According to ISRO, the spacecraft was injected into a highly elliptical unstable orbit due to a shortfall in velocity, leading to their decay and deorbiting immediately, in spite of the normal performance of all solid propulsion stages. 

Subsequent detailed analysis of the flight events and observations ranging from the countdown, lift-off, propulsion performance, stage separations and satellite injection revealed that there was a vibration disturbance for a short duration on the Equipment Bay (EB) deck during the second stage (SS2) separation. This affected the Inertial Navigation System (INS), resulting in declaring the sensors faulty by the logic in Fault Detection and Isolation (FDI) software.

About SSLV-D2

EOS-07 is a 156.3 kg satellite designed, developed and realized by ISRO. The mission objective of EOS-07 is to design and develop payload instruments compatible with microsatellite bus and new technologies, which are required for future operational satellites. Moreover, it will also design and develop a microsatellite accommodating new technology payloads in a quick turn-around time. 

New experiments include mm-Wave Humidity Sounder and Spectrum Monitoring Payload. Weighing around 10.2 kg, Janus-1 is a technology demonstrator, smart satellite mission based on the Antaris software platform. An 8.7 kg satellite AzaadiSAT-2 is a combined effort of about 750 girl students across India guided by Space Kidz India, Chennai.

According to details provided by ISRO, SSLV caters to the launch of up to 500 kg satellites to Low Earth Orbits on a “launch-on-demand” basis. It provides low-cost access to space, offers low turn-around time and flexibility in accommodating multiple satellites, and demands minimal launch infrastructure. It is configured with three solid propulsion stages and a velocity terminal module. It is a 34 m tall, 2 m diameter vehicle having a lift-off mass of 120 tonnes.

source/content: thehindu.com (headline edited)