The PSLV-C51 is the 53rd mission of the Indian

Polar Satellite Launch Vehicle The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellite ...

(PSLV) program. The Polar Satellite Launch Vehicle (PSLV)-C51 was launched at 04:54 (

UTC Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communica ...

) / 10:24 (

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) on 28 February 2021 with the main payload from

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

, INPE's

Amazônia-1 The Amazônia-1 or SSR-1 (in Portuguese language, Portuguese: ''Satélite de Sensoriamento Remoto-1''), is the first Earth observation satellite developed by Brazil, helped by Argentina's INVAP, who provided the main computer, attitude controls ...

and 18 other ride-sharing small satellites. It was the first dedicated commercial launch executed by NSIL.

Details

The PSLV-C51 was launched from the

First Launch Pad Satish Dhawan Space Centre – SDSC (formerly Sriharikota Range – SHAR) is the primary spaceport of the Indian Space Research Organisation (ISRO), located in Sriharikota, Tirupati district, Andhra Pradesh. The spaceport is located on an isla ...

of the

Satish Dhawan Space Centre Satish Dhawan Space Centre – SDSC (formerly Sriharikota Range – SHAR) is the primary spaceport of the Indian Space Research Organisation (ISRO), located in Sriharikota, Tirupati district, Andhra Pradesh. The spaceport is located on an isl ...

in Sriharikota, Andhra Pradesh, India. The PSLV C51 rocket carried primary payload,

and 18 secondary payloads like SDSat and three UnitySats(JITsat, GHRCEsat, Sri Shakthi Sat) etc. It was the third flight of PSLV-DL, having 2 strap-on boosters and placed the payloads in

Sun-synchronous orbit A Sun-synchronous orbit (SSO), also called a heliosynchronous orbit, is a nearly polar orbit around a planet, in which the satellite passes over any given point of the planet's surface at the same local mean solar time. More technically, it is ...

s. Private sector company

Ananth Technologies Ananth Technologies Limited is an Indian aerospace manufacturer that provides hardware and software services. The company manufactures electronics and mechanical subsystems for launch vehicles, satellites, spacecraft payloads, and ground system ...

worked with ISRO on the PSLV-C51 mission. The company conducted stage integration and checkout on the mission, marking the first time that ISRO had contracted a private sector company to undertake the task.

Launch schedule

The launch was originally scheduled for 22 February 2021, but was delayed to 28 February owing to delays in assembly of the rocket.

Mission overview

* Propellant: **''Stage 1:'' Composite Solid ** ''Stage 2:'' Earth Storable Liquid ** ''Stage 3:'' Composite Solid ** ''Stage 4:'' Earth Storable Liquid * Altitude: The PSLV C51 rocket has four stages; each one was self-contained, with its own

propulsion system Propulsion is the generation of force by any combination of pushing or pulling to modify the translational motion of an object, which is typically a rigid body (or an articulated rigid body) but may also concern a fluid. The term is derived from ...

, thereby capable of functioning independently. The first and third stages used composite solid propellants, while the second and fourth stage use earth-storable liquid propellant.

References

External links

{{PSLV Polar Satellite Launch Vehicle Spacecraft launched by India in 2021 February 2021 in India Rocket launches in 2021