About

EOS-6, also known as Oceansat-3 is a satellite developed by Indian Space Research Organisation (ISRO).

It was launched on November 26, 2022 in the PSLV-C54 launch vehicle.

Mission

It is an earth observation satellite with a focus on the study of ocean and coastal zones.

It will be applied for ocean surface studies, coastal zone management, and marine weather forecasting in the Indian ocean region.

Objective

It is aimed to continue the services of Oceansat-2 with enhanced payload specifications.

Payloads

It has lowing four payloads:

Ocean Color Monitor (OCM-3), 

Sea Surface Temperature Monitor (SSTM), 

Ku-Band Scatterometer (SCAT-3), 

ARGOS

PSLV-C54

It is the 56th mission of the ISRO’s Polar Satellite Launch Vehicle (PSLV).

The PSLV C54 rocket has four stages:

First stage (PS1): It uses a solid rocket motor and six solid strap-on boosters

Second stage (PS2): It uses liquid rocket engines

Third stage (PS3): Uses a solid rocket motor

Fourth stage (PS4): It uses liquid rocket engines and It is the final stage to launch the satellite into orbit.

About

INSAT-3DR is a satellite launched into Geostationary transfer orbit at 74° E by the Indian Space Research Organisation (ISRO) on September 8, 2016.

Mission

It will be used for weather monitoring, meteorological services, search and rescue information.

Payloads

It has three playloads. These are:

Data Collection Service (DCS), 

Advanced Aided Search & Rescue (SAS&R), 

Imager, Sounder

Applications

ThIs satellite has applications in Meteorological data collection, terrestrial data collection, search and rescue services, etc.

About

GSLV Mk II is an Indian Space launch vehicle designed to pace communication satellites into geosynchronous transfer orbit (GTO). 

It originally used the Russian cryogenic stages, however it has been employing indigenous cryogenic technology since 2014.

Features

It is a three-stage, fourth-generation launch vehicle with four liquid strap-on boosters. 

Its key features include:

The indigenously developed Cryogenic Upper Stage (CUS). 

Height: 73 m, 

Lift-Off Mass: 420 tonnes, 

Payload Capacity

It can carry primarily for communication satellites like the INSAT series up to 2,250 kg to GTO, and up to 6,000 kg to Low Earth Orbit (LEO).

Stages

It has three stages:

First Stage (GS1): Solid motor, HTPB fuel, 4800 kN thrust, 100 sec burn-time, with four liquid strap-on boosters.

Second Stage (GS2): Vikas engine, UH25 + N2O4 fuel, 846 kN thrust, 150 sec burn-time.

Third Stage (CUS): Uses CE-7.5 engine, LOX + LH2 fuel, 75 kN thrust, 814 sec burn-time.

PRACTICE QUESTION

Q.Consider the following statements about the “EOS-6” recently seen in the news: 

1. It is an earth observation satellite with a focus on study of ocean and coastal zones.
2. It was launched in PSLV-C54 which has three stages.

Which of the above statements is/are incorrect?

A.1 only

B.2 only

C. Both 1 and 2

D. Neither 1 nor 2

Answer: B

Explanation:

Statement 1 is correct: 

EOS-6, also known as Oceansat-3 is a satellite developed by Indian Space Research Organisation (ISRO).

It was launched on November 26, 2022 in the PSLV-C54 launch vehicle.

It is an earth observation satellite with a focus on study of ocean and coastal zones.

It will be applied for ocean surface studies, coastal zone management, marine weather forecasting in the India ocean region.

Statement 2 is incorrect: 

PSLV-C54 is the 56th mission of the ISRO’s Polar Satellite Launch Vehicle (PSLV).

The PSLV C54 rocket has four stages:

First stage (PS1): It uses a solid rocket motor and six solid strap-on boosters

Second stage (PS2): It uses liquid rocket engines 

Third stage (PS3): Uses a solid rocket motor 

Fourth stage (PS4): It uses liquid rocket engines and It is the final stage to launch the satellite into orbit.