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Reboost Strategy: Reaction Wheel Offloading

Reboost Strategy: Reaction Wheel Offloading


Date: 21 June 2006
Satellite: SMART-1
Copyright: ESA

The perilune raising manoeuvre strategy consists of a series of reaction wheel off-loadings combined with intermittent thrust centred around apolune during 74 orbits.  The assymetric firing of the attitude thrusters will produce a small Δv in the direction of flight (to the right in this illustration).  The reaction wheel offloadings transfer spacecraft angular momentum between the spacecraft +Y and -Y axis, also generating a small Δv in the direction of flight.  The accumulative Δv of the 74 orbits will result in the raising of SMART-1's perilune altitude by ~90 km.

Last Update: 1 September 2019
22-Apr-2021 13:35 UT

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