More rockets: the 40th PSLV, and a Soyuz from Plesetsk

First off, India’s Polar Satellite Launch Vehicle has completed its fortieth launch.  It placed Cartosat 2E (an Earth observation spacecraft), NIUSAT (a student-designed agricultural mapping satellite), and 29 nanosatellites successfully into Earth orbit.  One extra twist for this mission was a new function of the upper stage: it was restarted three times during the flight, demostrating the ability to place payloads into a variety of orbits.  With the explosion of interest in smallsats, such a capability will have enormous competitive value.  Underlining the competitive nature of this market, many of the smallsats flown on this mission were originally scheduled to fly on other rockets: some were meant to fly on a Falcon 9 that was delayed due to last year’s mishap and consequent flight reshuffling, and others were originally slated for the Dnepr rocket, which is now in limbo thanks to deteriorating relations between its Russian and Ukrainian partners.  It speaks to the fact that the current market prizes flexibility and rapid flight availability, and India has been deliberately and shrewdly positioning themselves to capture this sort of business.  The spaceflight game is changing.

Meanwhile, much farther north, Russia launched a Soyuz rocket from Plesetsk Cosmodrome.  The payload is classified, and so is almost certainly a spy satellite.  The high-latitude launch complex is primarily of interest for spacecraft going into mapping orbits.  Outside observers speculate that the payload (designated Kosmos 2519) is the first of the 14F150 Napryazhenie satellite series, which are believed to be geodetic mapping satellites designed to carefully map the Earth’s gravitational field.  From a military perspective, the primary value would be in more precise targeting of ballistic missiles, which are at the mercy of tiny fluctuations in the gravitational field as they coast to their targets, although it’s possible it could be used for other sorts of intelligence.  The NASA-operated GRACE spacecraft have been used to measure the drawdown of aquifers, for instance, so there are probably other applications one can come up with which have a more specific military or reconnaissance function.

This was a very different looking Soyuz rocket, flying as a naked core stage, lacking the conical strap-on boosters that give the vehicle its distinctive appearance.  And it had another interesting detail: the engines were NK-33s, surplus from the N-1 mega-rocket program in the 1960s and 1970s.  NK-33 has a somewhat mixed track record; although the manufacturer denied fault, the engines were implicated in the loss of an Orbital Science Antares rocket and its Cygnus payload “Deke Slayton” from Wallops Island in Virginia a few years ago.  But it performed fine for this mission.


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