DelFFi FIPEX Payload

The QB50 scientific payload that has been selected to be onboard Delta and Phi is the Unit Set 2, i.e. the Flux-Φ-Probe Experiment (FIPEX), plus Thermistors. FIPEX of TU Dresden (Flux-Φ-Probe-Experiment) is able to distinguish and measure the time-resolved behaviour of atomic and molecular oxygen as a key parameter of the lower thermosphere. Atomic oxygen is the dominant species in these regions and therefore its measurement is crucial in the validation of atmosphere models. Moreover, erosion of spacecraft surfaces due to interaction with atomic oxygen is a serious concern and merits in-situ study in its own right.