Soyuz-U-PVB | Yantar-4K2 54

The Government/Top Secret flight Soyuz-U-PVB | Yantar-4K2 54 departed Plesetsk Cosmodrome, Russian Federation atop a Soyuz-U-PVB, bound for LEO.

Launch time
Status
SUCCESS
Operator
Soviet Space Program
Mission type
Government/Top Secret
Rocket
Soyuz-U-PVB
Launch site
Plesetsk Cosmodrome, Russian Federation
Launch pad
16/2
Payload
—
Target orbit
LEO
Soyuz-U-PVB | Yantar-4K2 54 cover image

Mission timeline

  1. 1990-08-03T19:45:00.000Z
    Liftoff
    Soyuz-U-PVB roars off the pad at Plesetsk Cosmodrome, Russian Federation.
  2. Max-Q
    The vehicle reaches Max Q, the highest aerodynamic load of the flight.
  3. Main engine cutoff (MECO)
    MECO — first-stage propulsion ends after a nominal burn.
  4. Stage separation
    Clean stage separation confirmed.
  5. Second-stage ignition
    The upper-stage engine lights up after separation.
  6. Orbit insertion
    Orbit insertion confirmed — now circling in LEO.
  7. Mission success
    All mission objectives achieved.

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