This diagram shows the elements of the Soviet Vostok-style satellite. They hold compressed nitrogen used by the attitude-control thrusters. Battery capsule for the power supply. Reentry capsule for the microgravity experiment payloads. Spacecraft instrument module.
Thermal control baffles.
Solid fuel reentry engine. Spherical tanks for compressed nitrogen gas. Attitude-adjustment and control sensors. Pyrotechnic charge to de-link reentry capsule from the spacecraft. Thermal control baffles for battery capsule.