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Vega fourth stage
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- Title Vega fourth stage
- Released 15/04/2004 3:39 pm
- Copyright ESA
- Description
The Vega fourth stage, the Attitude and Vernier Module (AVUM) performs the following functions:
- roll control during 2nd, 3rd and 4th stage flights
- attitude control during coasting phase
- correction of axial velocity error due to solid rocket motor performance scatter
- generation of the required velocity change for orbit circularisation
- satellite pointing
- payload(s) release manoeuvres