Soyuz 2.1a/Fregat-M | Meridian-M No.18
Launch Successful
L - -- : -- : -- : --
Launch Window
July 30, 2019, 5 a.m. - July 30, 2019, 8 a.m.
July 30, 2019, 5 a.m. - July 30, 2019, 8 a.m.
The Meridian series of communications satellites is reported to be the replacement for all the Molniya-1T, the Molniya-3 and Molniya-3K satellite series and possibly also for the communication component of the Parus. They are launched into highly eccentric Molniya-orbits. Meridian is the highly eccentric orbit (HEO) component of the Integrated Satellite Communications System (ISSS), where they work in conjunction with the geostationary Raduga-1M (Globus-M) satellites. The bus structure is reportedly pressurized, possibly based on the Uragan-M bus. Meridian satellites carry three transponders operating in different frequency bands.
The 2.1a version includes conversion from analog to digital flight control system and uprated engines on the booster and the first stage with improved injection systems. The new digital flight control and telemetry systems allow the rocket to launch from a fixed rather than angled launch platform and adjust its heading in flight. A digital control system also enables the launch of larger commercial satellites with wider and longer payload fairings such as the ST-type fairing. These fairings introduce too much aerodynamic instability for the old analog system to handle.
Progress Rocket Space Centre, formerly known as TsSKB-Progress, is a space science and aerospace research company which is known for manufacturing launch vehicles and satellites. Most notably, Progress Rocket Space Centre is the manufacturer of Soyuz launch vehicles.
INFO WIKIA batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Synthetic aperture radar satellites for Japanese Earth imaging company Synspective.
Dedicated rideshare flight to a mid-inclination orbit with dozens of small microsatellites and nanosatellites for commercial and government customers…
Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.
4 small satellites for LEO Internet of Things (IoT) communication purposes.
Second flight of the KAIROS launch vehicle. 5 satellites for testing various technologies will be on board: * TATARA-1 * PARUS-T1A * SC-Sat1…
Seventh and eighth of a constellation of eleven high-throughput communications satellites in Medium Earth Orbit (MEO) built by Boeing and operated by…
Sixth batch of satellites for a reconnaissance satellite constellation built by SpaceX and Northrop Grumman for the National Reconnaissance Office to…
GPS-III (Global Positioning System) is the first evolution stage of the third generation of the GPS satellites. It consists of the first ten (known a…
4 X-band synthetic-aperture radar Earth observation satellites for the Chinese Earth observation satellite company PIESAT.