Zefiro is a family of solid-fuel rocket motors developed by Avio, an Italian aerospace company. These motors are primarily used as stages in the European Space Agency's Vega rocket family, including Vega C and previously Vega. The Zefiro engines, such as the Zefiro 9 and Zefiro 40, are crucial for ensuring Europe's independent access to space. They are developed and tested at facilities like the Space Propulsion Test Facility (SPTF) in Sardinia.
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Zepiro’s D2O (Direct-to-Orbit) is a satellite telemetry solution that provides connectivity for sensors including water quality, soil, and advanced weather stations.