ESA Intended Invitation To Tender


Program ref.: TRP
Tender Type: C
Tender Status: INTENDED
Price Range: 100-200 KEURO
Budget Ref.: E/0901-01 - TRP
Proc. Prop.: NO
Establishment: ESTEC
Directorate: Directorate of Technical & Quality Manag
Department: Mechanical Engineering Department
Division: Propulsion & Aerothermodynamics Division
Responsible: Gonzalez Del Amo Jose Antonio
Publication Date: 18-MAR-16

The growing demand of propellant tankage leads to multiple tanks configuration and hence exposes the mission to the risk of large centre of mass shift as large amounts of propellant flows between the tanks. This calls for an increase of the ACS actuator capacity,and/or propellant required for dumping of angular momentum. The problem is mostly highlighted in electric propulsion due to the highly variable density of Xenon when stored under supercritical conditions. Although mass transfer between tanks in principle can be prevented by the implementation of latching valves at every tank outlet, such a solution would increase the system mass, add system complexity and lower the overall reliability. Exploring and bread boarding a reliable, light and settable anti transfer device would reduce the criticality for most of the future telecommunication missions using Xenon. The activity should consist in a design feasibility study based on an existing component survey and in a second phase of breadboarding to demonstrate the ability of the proposeddesign in meeting the targeted functions. Procurement Policy: C(1) = Activity restricted to non-prime contractors (incl. SMEs). For additional information please go to EMITS news "Industrial Policy measures for non-primes, SMEs and R&D entities in ESA programmes".