The PSLV-C45 is the 47th 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) satellites ...

(PSLV) program. The Polar Satellite Launch Vehicle (PSLV)-C45 was launched on 1 April 2019 with a payload of 29 satellites, including one for electronic intelligence, along with 28 customer satellites from other countries.

Details

The PSLV-C45 was launched from the second launch pad of the

Satish Dhawan Space Centre Satish Dhawan Space Centre - SDSC (formerly Sriharikota Range - SHAR) is a rocket launch centre ( spaceport) operated by Indian Space Research Organisation (ISRO). It is located in Sriharikota, Tirupati district of Andhra Pradesh. Sriharikota ...

in Sriharikota, Andhra pradesh,India. The PSLV C45 rocket carried primary payloads like

EMISAT EMISAT, launched on 1 April 2019, is an Indian reconnaissance satellite under Defence Research and Development Organisation (DRDO) project ''Kautilya'' which is a package that provides space-based electronic signal intelligence or ELINT. The spa ...

and secondary payloads like M6P, BlueWalker 1, four Lemur-2 out of a total of thirty satellites. EMISAT is developed by

DRDO The Defence Research and Development Organisation (DRDO) (IAST: ''Raksā Anūsandhān Evam Vikās Sangaṭhan'') is the premier agency under the Department of Defence Research and Development in Ministry of Defence of the Government of India, ...

. The EMISAT satellite is based on the IMS-2 bus inherited from

SARAL SARAL (''S''atellite with ''AR''gos and ''AL''tiKa) is a cooperative altimetry technology mission of Indian Space Research Organisation (ISRO) and Centre National d'Études Spatiales (CNES). SARAL performs altimetric measurements designed to st ...

. The nature of the payload has not been officially confirmed. It was the first flight of PSLV-QL, having 4 strap-on boosters and placed a primary payload

and a secondary payload of multiple cubesats, for example 4 Lemur-2 satellites and the M6P satellite, 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 ...

Uniqueness of the project

PSLV C-45 captured from launch view gallery

The specialty of this mission is that for the first time PSLV will launch satellites in Three different orbits. Another distinguished feature of the project is for the first time, PSLV with four strap-on configuration has been identified for this mission. Until now, PSLV has been in either two or six strap-on configuration or without any strap-ons. Third uniqueness in this mission as it is the first PSLV fourth stage (PS4) that uses solar panels to support payloads hosted on it.

Sequence of launch

Mission starts with the Launching of the satellite EMISAT into orbit at 780 km, then it will inject 29 satellites into orbit at 504 km and later the fourth stage will move to 485 km orbit to carry out scientific experiments. The launch was originally scheduled for 21 March 2019, but was delayed to 1 April "to ensure system readiness for a perfect launch".

Mission overview

* Propellant: **''Stage 1:'' composite solid ** ''Stage 2:'' Earth storable liquid ** ''Stage 3:'' composite solid ** ''Stage 4:'' Earth storable liquid * Altitude: The PSLV C45 rocket had 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 stage used earth-storable liquid propellant and fourth one fitted with Solar Panels.

References

External links

PSLV-C45 / EMISAT Mission
{{PSLV Polar Satellite Launch Vehicle Spacecraft launched by India in 2019 April 2019 events in India Rocket launches in 2019