DS-U2-IK-1 Credit - Yuzhnoye

Studied charged particle flows and the ionosphere; version used for Intercosmos international launches. East European experiments studied protons, electrons, alpha particles.

Design work began in April 1967. Adaptation of DS satellites by KB Yuzhnoye. For the Interkosmos modifications V F Chutkin was Chief Designer and First Assistant was V S Budnik.

Typical orbit: 245 x 1362 km, 64.3 deg inclinaton.

• 1967 April 1 - Design work begins on Interkosmos version of DS -
  For the Interkosmos modifications V F Chutkin was Chief Designer and First Assistant was V S Budnik. East European experiments studied protons, electrons, alpha particles.

• 1970 August 7 - Intercosmos 3 - Program: DS. Launch Site: Kapustin Yar. Launch Complex: LC86/4. Launch Vehicle: Kosmos 2. Mass: 340 kg (740 lb). Perigee: 201 km (124 mi). Apogee: 1,294 km (804 mi). Inclination: 48.40 deg. Period: 99.80 min.
  Studied charged particle flows and the ionosphere. Carried East European experiments that studied protons, electrons, alpha particles.

• 1971 December 2 - Intercosmos 5 - Program: DS. Launch Site: Kapustin Yar. Launch Complex: LC86/4. Launch Vehicle: Kosmos 2. Mass: 340 kg (740 lb). Perigee: 198 km (123 mi). Apogee: 1,181 km (733 mi). Inclination: 48.40 deg. Period: 98.50 min.
  Carried Czech and Soviet instruments that investigated the effects of solar activity on near-Earth radiation. Studied the radiation levels in near-Earth space, investigated dipole corpuscular streams in near space in connexion with solar activity and investigation of the nature and spectrum of low-frequency electromagnetic oscillations in natural plasma.

• 1973 April 19 - Intercosmos 9 - Program: DS. Launch Site: Kapustin Yar. Launch Complex: LC86/4. Launch Vehicle: Kosmos 2. Mass: 400 kg (880 lb). Perigee: 199 km (123 mi). Apogee: 1,526 km (948 mi). Inclination: 48.40 deg. Period: 102.20 min.
  Also designated Intercosmos Copernicus 500. Investigated solar radio-frequency radiation and the characteristics of the earth's ionosphere.

• 1973 October 30 - Intercosmos 10 - Program: DS. Launch Site: Plesetsk. Launch Complex: LC132/2. Launch Vehicle: Kosmos 3. Mass: 550 kg (1,210 lb). Perigee: 257 km (159 mi). Apogee: 1,453 km (902 mi). Inclination: 74.00 deg. Period: 102.00 min.
  Geophysical research at high latitudes to study the electromagnetic coupling of the earth's magnetosphere and ionosphere.

• 1974 October 31 - Intercosmos 12 - Program: DS. Launch Site: Plesetsk. Launch Complex: LC132/2. Launch Vehicle: Kosmos 3. Mass: 400 kg (880 lb). Perigee: 243 km (150 mi). Apogee: 707 km (439 mi). Inclination: 74.00 deg. Period: 94.10 min.
  Atmospheric, ionospheric research. Comprehensive investigation of the earth's atmosphere and ionosphere and of micrometeorite fluxes.

• 1975 March 27 - Intercosmos 13 - Program: DS. Launch Site: Plesetsk. Launch Complex: LC132/1. Launch Vehicle: Kosmos 3. Mass: 400 kg (880 lb). Perigee: 284 km (176 mi). Apogee: 1,689 km (1,049 mi). Inclination: 83.00 deg. Period: 104.90 min.
  Upper atmospheric experiments. Study of dynamic processes in the earth's magnetosphere and polar ionosphere and investigation of low-frequency electromagnetic waves.

• 1975 December 11 - Intercosmos 14 - Program: DS. Launch Site: Plesetsk. Launch Complex: LC132/1. Launch Vehicle: Kosmos 3. Mass: 700 kg (1,540 lb). Perigee: 335 km (208 mi). Apogee: 1,684 km (1,046 mi). Inclination: 74.00 deg. Period: 105.30 min.
  Study of low-frequency electromagnetic vibrations in the magnetosphere of the earth, of the structure of the ionosphere and of the intensity of micrometeorite fluxes.