Russian space
officials have called off the search for an unmanned rocket and its military
satellite payload that crashed just after liftoff from Plesetsk Cosmodrome
Tuesday.
Recovery of
the communication satellite's remains, which were strewn across Russia's
Tyumen region of Siberia, will resume Wednesday, according to the Russian news
agency Interfax.
"The
search, involving an An-2 aircraft, lasted about five hours," a spokesman for
Russia's Emergency Situations Ministry told Interfax, adding that search operations
concluded as the plane ran out of fuel.
Molniya
satellites work in tandem with other spacecraft to provide uninterrupted video
and radio signals for military users. While newer Molniya satellites have
served the Russian military, earlier versions were used by civilian consumers
as well. Those spacecraft orbited Earth once every 12 hours in an orbit that
stretched from 24,854 miles (40,000 kilometers) at its peak above the Northern
Hemisphere down to 292 miles (470 kilometers) above Southern Hemisphere.
Russian
space officials said the Tuesday's Molniya-M rocket launched properly, but
experienced a malfunction as it switched between stages.
"The
engines of the Molniya-M rocket carrier shut down when the carrier rocket was
putting the military-purpose satellite in orbit," said Russian Space Forces
Col. Alexei Kuznetsov told Interfax. "As a result, the satellite did not reach
its designated orbit."
Anatoly
Perminov, chief of the Russian Federal Space Agency, said investigators were
considering two potential causes for the crash.
"Either there
was an engine failure of the third stage, or the staging order was not
fulfilled," Perminov told reporters during a press conference at the
Interfax main office.
A criminal
investigation has been opened, with military prosecutors to study the potential
violation of flight rules, according to the Associated Press and Interfax.
So far,
there have been no reports of injuries or major damage, and Russian Space
Forces officials touted the Molniya launch vehicle as among its most
environmentally-safe boosters because it relies on kerosene and liquid oxygen,
Interfax reported.