Browsing by Author "Jorda, Laurent"

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    CASTAway: An asteroid main belt tour and survey
    (Elsevier, 2017-11-01) Bowles, Neil E.; Snodgrass, Colin; Gibbings, Alison; Sanchez, Joan-Pau; Arnold, Jessica A.; Eccleston, Paul; Andert, Tom; Probst, A.; Naletto, Giampiero; Vandaele, A. C.; de Leon, J.; Nathues, A.; Thomas, Ian R.; Thomas, Nicholas; Jorda, Laurent; Da Deppo, Vania; Haack, H.; Green, Simon F.; Carry, Benoit; Donaldson Hanna, Kerri L.; Leif Jorgensen, J.; Kereszturi, Akos; DeMeo, F. E.; Patel, Manish R.; Davies, John K.; Clarke, Fraser; Kinch, K.; Guilbert-Lepoutre, A.; Agarwal, J.; Rivkin, Andy S.; Pravec, Petr; Fornasier, Sonia; Granvik, Mikael; Jones, Rhian H.; Murdoch, Naomi; Joy, Katherine H.; Pascale, Enzo; Tecza, Matthias; Barnes, Jenny M.; Licandro, J.; Greenhagen, Benjamin T.; Calcutt, Simon B.; Marriner, C. M.; Warren, Tristram; Tosh, Ian
    CASTAway is a mission concept to explore our Solar System’s main asteroid belt. Asteroids and comets provide a window into the formation and evolution of our Solar System and the composition of these objects can be inferred from space-based remote sensing using spectroscopic techniques. Variations in composition across the asteroid populations provide a tracer for the dynamical evolution of the Solar System. The mission combines a long-range (point source) telescopic survey of over 10,000 objects, targeted close encounters with 10–20 asteroids and serendipitous searches to constrain the distribution of smaller (e.g. 10 m) size objects into a single concept. With a carefully targeted trajectory that loops through the asteroid belt, CASTAway would provide a comprehensive survey of the main belt at multiple scales. The scientific payload comprises a 50 cm diameter telescope that includes an integrated low-resolution (R = 30–100) spectrometer and visible context imager, a thermal (e.g. 6–16 µm) imager for use during the flybys, and modified star tracker cameras to detect small (∼10 m) asteroids. The CASTAway spacecraft and payload have high levels of technology readiness and are designed to fit within the programmatic and cost caps for a European Space Agency medium class mission, while delivering a significant increase in knowledge of our Solar System.
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    A qualification procedure to manufacture and repair aerospace parts with electron beam melting
    (Elsevier, 2016-08-03) Portoles, L.; Jorda, O.; Jorda, Laurent; Uriondo Del Pozo, Adrian; Esperon Miguez, Manuel; Perinpanayagam, Suresh
    This paper is focused on qualification procedures for metal parts manufactured using new additive manufacturing (AM) techniques in the aerospace industry. The main aim is to understand the interaction between these technologies and the stringent regulatory framework of this industry in order to develop correct quality assurance and quality control procedures in accordance with the certification process for the technology and spare parts. These include all the testing and validation necessary to implement them, as well as to maintain their capability throughout their life-cycle, specific procedures to manufacture or repair parts, work-flows and records, amongst others. An entire qualification procedure for electron beam melting (EBM) to reproduce and repair an aerospace part has been developed and it is presented in this paper. These will be part of the future quality assurance and quality management systems of those aerospace companies that implement AM in their supply chain.