At the Vostochny cosmodrome, the assembly of the Soyuz-2.1a rocket is completed, which on May 27 at 00:14:51 will send the Condor-FCA radar satellite, a remote sensing satellite of the Earth, into orbit. Not only is this satellite the first of its kind, this launch has another feature - the use of naphthyl.
"This will be the second launch of the Soyuz-2 family rocket entirely on a new and highly ecological fuel - naphthyl - and the first for the Soyuz-2.1a modification. Naphthyl is an environmentally safe type of hydrocarbon fuel with the use of polymer additives. Its advantages are reducing harmful emissions and a significant increase in the mass of the payload brought into orbit", — writes Roscosmos.
As for the Condor-FCA, this spacecraft is designed for round-the-clock all-weather radar remote sensing of the Earth in medium and high resolution.