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Mitigation of wheel friction torque instabilities

Thu, 12/14/2023 - 02:00
Start Date: 
2013
Programme: 
TDE
End Date: 
2015
Programme Reference: 
T705-302EC
Country: 
Germany
Prime Contractor: 
ROCKWELL COLLINS DEUTSCHLAND GMBH
Status: 
Closed
Objectives: 

Reduce / remove the impact of wheel friction torque instabilities on the spacecraft pointing and stabilityImproved wheel performance for demanding missions

Description: 

Missions require more and more stringent stability performances, for which the performances of the reaction wheels become drivers.A recurrent issue is the wheel friction instability, resulting in fast variations of the wheel response, which adversely affects the pointing stability.This activity will:- examine the little understood effects of the lubrication system and environment on the stability and consistency of the delivered torque- characterise the impact of wheel instabilities on the pointing and stability- investigate solutions (at AOCS level, at wheel level, at system level, at HW or SW levels)- assess the system impact

Application Domain: 
Generic Technologies
Technology Domain: 
5 - Space System Control
Competence Domain: 
3-Avionic Systems
Keywords: 
5-Space System Control
Initial TRL: 
TRL 3
Target TRL: 
TRL 4
Public Document: