Heos-11 is scheduled for launch in January 1972. Weighing in at 117kg, it will investigate the solar wind and its interaction with the Earth's polar magnetosphere. Instruments have been contributed by Imperial College, London; Rome University; Danish Space Research Institute; ESTEC; Centre d' Etudes Nucleaires, Saclay; Milan University; and Max Planck Institutes in Garching and Heidelberg.
This film provides a pre-launch summary of the formulation of Heos-11. Its operation in a polar orbit is compared with that of Heos 1, which operates today in a quasi-equatorial orbit. There is substantial cleanroom footage, including vibration testing of prototypes and test models. The way in which the satellite will work is explained by various professors, each of whom describe their own contributions to the satellite.

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