The countdown for the launch of Singapore satellites on December 16 from Indian Space Research Organisation’s Port One in Sriharikota in Andhra Pradesh has begun on Monday.
ISRO said in its update that the Mixed Oxides of Nitrogen (MON-3) oxidiser filling operation of PS4 was completed by 15:00 hr IST on Monday and Mono Methyl Hydrazine (MMH) propellant filling operation of fourth stage (PS4) was completed by 10:45 hr IST.
Preparations for Mixed Oxides of Nitrogen (MON-3) oxidiser filling operation of PS4 are under progress when reported.
The 6 satellites of Singapore will be on board the ISRO workhorse Polar Satellite Launch Vehicle, which is scheduled to be lifted off at 6.00pm on December 16 from the Satish Dhawan Space Centre, Sriharikota.
“The 59-hour countdown activity of PSLV-C29/TeLEOS-1 Mission has started at 07.00 hours today,” ISRO said in a statement after the mission readiness review committee and launch authorisation board have given their nod fpor the launch of another big commercial launch by ISRO.
The mission will be the 32nd flight and teh six satellites will be lofted off into a 550-km circular orbit inclined at 15 degrees to the equator.
The main TeLEOS-1 earth observatory satellite weighs 400kg and other five satellites include two micro-satellites and three nano-satellites.
PSLV-C29 will be a ‘Core-alone’ rocket without using the solid strap-on motors. Apart from TeLEOS-1, the other five satellites are:
VELOX-CI, a 123-kg microsatellite, has been designed and developed by Nanyang Technological University (NTU) of Singapore.
VELOX-II is a 13-kg 6U-Cubesat tech demonstrator with 3 payloads — communications, GPS and Fault tolerant Payload, and it was developed by NTU.
Athenoxat-1, a tech demo nano-satellite by Microspace Rapid Pvt. Ltd. in its Singapore lab, for Earth remote sensing based on a 3U-Cubesat form factor.
Kent Ridge-1 is a 78-kg microsatellite with a medium resolution VNIR Hypersepectral camera (GSD 44m) and short wave infrared (SWIR) Hyperspectral camera (GSD 110m). It has another real-time high resolution video camera of resolution 6m. These visual equipement will help for UHF Telemetry link and X-band data downlink.
Galassia (3.4 kg ) is another 2U-Cubesat.
With the C-29 mission, ISRO’s record of launches in 2015 will be 14 satellites (3 Indian and 11 foreign) from its rocket port in Sriharikota and 13 of them were launched by PSLV and one communication satellite, GSAT-6, by Geosynchronous Satellite Launch vehicle (GSLV).