TKS capsule at Khrunichev factory.
Launched: 1981 Late. Number crew: 3 .
For that mission the VA reentry capsule was retained but stripped of its heat shield and all recovery equipment. In their place military optical test sensors (infrared telescope and Ozon spectrometer) were installed.
TKS - Cosmos 1663 Configuration. The recovery systems of the VA capsule were replaced with military space sensors.
Credit: © Reginaldo Miranda Jr