Three days, three launches: ERG, Star One D1/JCSAT 15, and TanSat

2016 is wrapping up with some fireworks: three orbital rocket launches this week, and then possibly up to three more next week!

First off, on Tuesday, the Exploration of Energization and Radiation in Geospace, or ERG, spacecraft (to be renamed Arase after postlaunch checkout, after a river near the launch site) blasted off from the Uchinoura Space Center on the island of Kyushu, Japan, atop an Epsilon rocket.  The all-solid-prop Epsilon is a lower-cost replacement to the legacy Mu series of lighter-weight rockets, designed to require a very small launch team and capable of rapid deployment and hopefully to become a strong commercial contender internationally.  This is only its second flight.  Epsilon’s prime contractor is IHI Aerospace; Mitsubishi Heavy Industries, which builds the much larger H-II rocket, is a supplier, as is NEC.  The payload, ERG, will be operated by JAXA on a highly elliptical orbit that will force it to pass repeatedly through the Van Allen Belts for the purpose of better understanding them.  It will join two NASA spacecraft already on that mission, permitting three-way observation.

Then there were two launches yesterday.  First, from Kourou Space Centre in French Guiana, an Ariane V heavy lift rocket lifted two commsats to geosynchronous transfer orbit: Star One D1, to provide television and telecommunications services to South America for Embratel Star One of Brazil, and JCSAT 15, to provide television services for SKY Perfect JSAT Corp of Japan.


And then overnight, a scientific Earth observation satellite designed to monitor CO2 levels, TanSat, launched into polar orbit aboard a Long March 2D rocket from Jiuquan in northern China.  The spacecraft will be capable of mapping CO2 concentrations down to four parts per million worldwide, and also carries instruments relating to cloud and aerosol detection.  Don’t be alarmed by all the sparklies you see falling — those are sheets of ice illuminated by the brilliant rocket plume.  Ice formation is extremely common on liquid-propellant rockets, since the oxidizer at minimum is chilled to cryogenic temperatures.

All of these launches were completely successful.  There are three more launches planned for 2016, and hopefully they will go just as well: another Long March 2D, a Long March 3B, and a Proton.


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