Russian orbital launch vehicle. Version of Soyuz launcher with increased payload, designed to launch Soyuz R military reconnaissance satellite. Cancelled along with the Soyuz R project in 1966. Unknown differences to standard Soyuz to reach payload requirement of circa 6700 kg to 65 degree orbit.
AKA: 11A514;A-2;Sapwood;SL-4;Vostok. Status: Development ended 1966. Payload: 6,700 kg (14,700 lb). Apogee: 200 km (120 mi).
LEO Payload: 6,700 kg (14,700 lb) to a 200 km orbit at 65.00 degrees.