Dr. Francesca Erba

Ariane 5 Cryogenic Main Stage: Focal Point for Obsolescences (avionics, composite materials, surface treatments). Member (thermomechanics) of technical reviews of A5 E/CA, A5 UPA redesigned or new (MPCV) equipments. Technical Authority tasks for the Equipped Insulated Tank (PM and waivers treatment at stage level). Technical specifications, test plans/ reports. Impact studies of general loads and pressure fluctuations anomalies, to declare A5 able for flight - A5 E/CA, A5 E/S ATV, A5 E/S Galileo.

EXPERT Vehicle and Payloads: thermomechanics, dynamics. Concepts for re-usable TPS and insulation materials. Follow-up of qualification/acceptance tests. Review member (PDR to AR). Contractor management: of three hot structures contracts. Follow-up of equipments and their AVMs and of HS development, manufacturing and qualification. IXV: member of reviews (SRR-PDR) for HS-TPS. FLPP M&S: Contracts initiation, follow-up of contracts of FLPP M&S (cryo-tanks and primary structures development).

Management of modeling activities for engine components (Ariane5 ECA Return-to-Flight and R&T on combustion chambers). Synthesis reports. Cross-check studies, elasto-plastic, buckling analyses of tanks, propulsion components. Crack propagation. To update the SG standards of engines design: writing of report of criteria for Vulcain2 components. Followup of development of the VINCI nozzle(CMC). Design cross-check of EMA actuators of the VEGA TVC. Contribution to tradeoff for P80 EMA batteries.

Damage tolerance and health monitoring : Helium cryogenic tanks, Fracture mechanics analysis (fatigue cracks propagation). Writing of the fracture control plan and other technical notes. Hand calculation of buckling under external pressure of stiffened cups and cylindrical shells. Follow-up of mechanical characterisation tests, preparation of tests with according to AFNOR, ESA, CNES, Fracture mechanics tests procedures according to ASTM standards (KIE, fracture toughness for surface cracks. DML.

R&D Engineer, « Planage et Rhéologie » Section FEM analysis. Modelling of the manufacture of tubes and of industrial processes after rolling (straightening) of sheets (ABAQUS/explicit, ABAQUS/standard). Plasticity, large strains, contacts. Technical reports.

Composite structures

Structures, Materials technologies