Rocket DB

Head to head

Soyuz-U-PVB vs Vostok 8A92

Two vehicles in the same payload class. Every figure below comes from the same two sources for both rockets, and a row appears only when both publish the input.

Payload to low Earth orbit

Relative

Soyuz-U-PVB: 6,900 kg

Vostok 8A92: 4,730 kg

Side by side

7 comparable figures

The highlighted value wins the row. Rows where neither direction is better, like length or stage count, highlight nothing.

MetricSoyuz-U-PVBVostok 8A92
Flights flown7444
Success rate97.3%90.9%
Payload to LEO (kg)6,9004,730
Length (m)5130.84
Diameter (m)32.99
Launch mass (t)313281
Stages22

Soyuz-U-PVB

Flight record
97.3% success rate72 of 74 flown · 2 failed
1984peak 1999 · 9 flights2009

Maiden flight 1984-03-21. Retired.

Vostok 8A92

Flight record
90.9% success rate40 of 44 flown · 4 failed
1962peak 1966 · 10 flights1967

Maiden flight 1962-06-01. Retired.

Soyuz-U-PVB is built by Progress Rocket Space Center of Russia.Vostok 8A92 is built by RKK Energiya of Russia.

Full specifications and the complete launch history for each: Soyuz-U-PVB · Vostok 8A92.

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.