document title / titre du document TRP W ORK PLAN ... - emits - ESA

TRP Work Plan 2005-2007
Description of Activities
TEC-SB/7935/dc
12/Feb/09
TRP Reference:
Title:
T601-36MM
Unlimited resetable, no-shock Hold-Down and Release Mechanism (HDRM)
A worst case environmental test of the double stage Harmonic drive gear box must be performed to ensure that the gearbox
behaves as expected within the specified temperature range [Operational -130 degC to + 116 degC, Survival -180 degC to
+116 degC]
Deliverables:
HDRM breadboard model with associated datapackage documentation.
Current TRL: TRL1 Target TRL: TRL3-4 Application Need/Date: TRL5 >2009
Low mass appendages, where access is
Application/Mission: critical (e.g. optical payload mechanisms, Contract Duration: 18 months
small reflectors, covers)
SW Clause : - Dossier0 Ref.: T-7847
Consistency with Harmonisation
Roadmap and Conclusions:
Hold-down and Separation Systems
TRP Reference: T601-47MX / MMM-960
Title:
Tribology Application Programme
Within the identified funding limitations, the R&D activities proposed will address in detail all subjects from tribological design,
analysis, to development and lifetime test demonstration of advanced tribological components and lubrication solutions. Tool
developments to facilitate the design and analysis of bearings and its components (cages) under specialised conditions as
experienced on Earth Observation payloads are included. Furthermore, moving electrical contacts, sizing for stiction and
dynamic friction, and tribological solutions for miniaturised mechanisms components and development of special tribological
coatings to reduce payload and S/C cost for integration will be investigated.
Deliverables:
Tribological assessments, feasibility demonstrations of lubricants wrt. wear and lifetime performance, Software breadboard
verifications of advanced lubricant solutions on key mechanisms components.
Current TRL: - Target TRL: TRL3-4 Application Need/Date: N/A
Application/Mission: all space missions Contract Duration: 60 months
SW Clause : Operational SW Dossier0 Ref.: T-7846
Consistency with Harmonisation
Roadmap and Conclusions:
Not directly linked to harmonised technology.
TRP Reference: T608-31MM
Title:
Fully Variable Bearing Active Preload System
The proposed activity aims at the development of a device that allows to actively control in-orbit the preload of ball bearings
for applications requiring an extremely long life (e.g. Wheels, Pointing & Scanning mechanisms). The basic concept of
bi-stable (one shot) operation, i.e. switching between high and low preload already proven in terms of concept, shall be
extended to in-orbit full adjustment capability. Upon external command, it shall be possible to select a high preload and to vary
a low preload setting within an appropriate range. Using a suitable target wheel as test bed, an engineering model of the
preload adjustment device shall be designed, manufactured, integrated and tested in representative environment.
Deliverables:
Engineering Model (accompanied by Technical Data Package and further documentation).
Current TRL: TRL3 Target TRL: TRL5-6 Application Need/Date: TRL5-6 in 2008
Wheels, Pointing mechanisms,
Application/Mission: Contract Duration: 18 months
Scanning mechanisms
SW Clause : - Dossier0 Ref.: T-7848
Consistency with Harmonisation
Roadmap and Conclusions:
Page 185 of 227