The rocket lifted off from the primary launch pad at Satish Dhawan Area Centre in Sriharikota at 2.19pm. It was PSLV’s 57th flight. It was additionally the sixteenth flight of PSLV with a CA (core-alone) variant, which is the lightest model of launch car because it has solely 4 core levels and no strap-on boosters to offer an added thrust.
Round 19 minutes after the lift-off, PSLV-C55 positioned 741kg TeLEOS-2 in a 586km orbit. Fifty seconds later, the rocket positioned 16kg Lumelite-4 additionally within the desired orbit.
Round two minutes after the final satellite tv for pc was separated, the higher stage of PSLV underwent passivation (a chemical course of) with combined oxides of nitrogen (MON) adopted by mono methyl hydrazine (MMH) – the propellants that energy PSLV’s higher stage. The operation was to scale back the compression within the tanks to forestall an explosion. On condition that there can be publicity to excessive temperatures, the gas may broaden and trigger an explosion.
After this course of, the PS4 higher stage of the rocket was an orbital platform (PSLV Orbital Experimental Module-2 or POEM-2) to carry out in-orbit scientific experiments with payloads connected to it. Seven non-separable payloads have been mounted on a multi-satellite adapter (MSA).
Isro chairman S Somanath mentioned PSLV has as soon as once more proved its reliability. “The higher stage of the rocket goes to jot down a summer season poem. Seven payloads are mounted on prime of the higher stage. If every part goes properly, it would perform for the subsequent one month. It’s for the primary time that we’re deploying a photo voltaic panel in PS4. We’ll replace on the efficiency of POEM via our social media handles,” he mentioned.
Isro officers mentioned payloads have been powered on by a command, in spite of everything satellites have been separated. The platform had a photo voltaic panel mounted across the PS4 tank which was deployed via a floor command after affirmation of the stage reaching stabilization.
The platform ensured that the deployed photo voltaic panel pointed in the direction of the solar, optimally utilizing an applicable solar pointing mode to extend its energy era functionality. The facility was supplied to the payloads and the avionic packages primarily based on their necessities. All through this a part of the mission, the platform remained in the identical orbit achieved on the finish of PS4 tank passivation after the first mission.
That is the third time that PS4 was used after satellite tv for pc separations as a platform for experiments.
POEM-2 carried seven experimental non-separable payloads. They included PiLOT (PSLV In orbitaL Obc and Thermals), an OBC bundle from IIST; ARIS-2 (Superior Retarding Potential analyser for Ionospheric Research) experiment from IIST; HET-based ARKA200 Electrical Propulsion System from Bellatrix; DSOD-3U and DSOD-6U deployer models together with DSOL-Transceiver in S- & X- bands from Dhruva Area and Starberry Sense Payload from Indian Institute of Astrophysics (IAP).
The 2 Singapore satellites
The TeLEOS-2, developed beneath a partnership between DSTA (representing the Authorities of Singapore) and ST Engineering, might be used to assist the satellite tv for pc imagery necessities of varied companies of the Singapore authorities. TeLEOS-2 carries a Artificial Aperture Radar (SAR) payload. TeLEOS-2 will have the ability to present all-weather day and evening protection. It’s able to imaging at 1m full-polarimetric decision.
Lumelite-4 is co-developed by the Institute for Infocomm Analysis (I2R) of A*STAR and Satellite tv for pc Expertise and Analysis Centre (STAR) of the Nationwide College of Singapore. Lumelite-4 is a sophisticated 12U satellite tv for pc developed for the technological demonstration of the Excessive-Efficiency Area-borne VHF Information Alternate System (VDES). Utilizing the VDES communication payload developed by I2R and STAR’s scalable satellite tv for pc bus platform, it goals at augmenting Singapore’s e-navigation maritime security and profit the worldwide delivery group.
Watch ISRO efficiently launches PSLV-C55 mission carrying two Singaporean satellites