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IFS, Integral field spectrograph, Optomechanics, PISCES, Rapid prototype, Rapid prototyping, WFIRST, Data mining, NASA, Space telescopes, Spectrographs, Data cube, Data pipelines, ITS data, Parallel path, Engineering, computing & technology :: Aerospace & aeronautics engineering, and Ingénierie, informatique & technologie :: Ingénierie aérospatiale

We successfully rapid-prototyped a mostly off-the-shelf, partially 3D-printed pathfinder version of an integral field spectrograph (IFS) in order to compress the design/build/test schedule of a final, mostly-custom IFS, by accelerating the start date of data pipeline development, thus allowing this development to progress in parallel with the design, procurement, fabrication, and alignment of the final IFS version. This parallel-path development schedule enabled us to successfully design, build, align, test, and extract a data cube from the new IFS within only 1 year, even in the face of several design setbacks. We have begun using the now-functional IFS for development of IFS sensing and control algorithms, and have also begun implementing motorized alignment upgrades that enable the systematic characterization of the tolerance (or required compensation) of its data cube extraction to misaligned images, in support of NASA's WFIRST and PISCES IFS. © 2019 SPIE.

Prototyping, algorithmic thinking, design method, hybridization, experimentation, Engineering, computing & technology :: Architecture, Ingénierie, informatique & technologie :: Architecture, Engineering, computing & technology :: Computer science, and Ingénierie, informatique & technologie :: Sciences informatiques

In this paper, we describe a teaching and research experiment which has beentaking place in two Faculties of Architecture in Belgium for the last five years. This experiment focuses ondiscovering and exploring new design issues based on digital concepts and aims identifying andcharacterizing the design praxis shifts (mutations) by the digital culture integration. More precisely, thisexperiment aims at having students discovering and exploring design issues in the first stage of virtual(parametric) model elaboration including fabrication possibilities within its own internal logic.

design framing, experimentation, algorithmic thinking, design and build, Engineering, computing & technology :: Architecture, and Ingénierie, informatique & technologie :: Architecture

As teachers in a Belgian Faculty of Architecture, we present a learning-by-doing workshop experience.It aims to achieve on one hand the design and the building of a prototype of kinetic and adaptive architectural skin and on the other hand to develop a design frame.Using an advanced educational process as a guide line, based on designing / prototyping we discuss what accurate knowledges and specific skills are needed to perform a usable and relevant modeling associated to an appropriate production method.We demonstrate how incorporate complexity into the design space, and develop an accurate help for creative thinking, especially to manage a kinetic architectural object.

sketching, prototyping, best practice, Engineering, computing & technology :: Multidisciplinary, general & others, Ingénierie, informatique & technologie :: Multidisciplinaire, généralités & autres, Engineering, computing & technology :: Mechanical engineering, and Ingénierie, informatique & technologie :: Ingénierie mécanique

Sketching and prototyping of design concepts have long been valued as tools to support productive early stage design. This study investigates previous findings about the use and timing of use of such design tools. This study considers such tools in the context of team design projects. General trends and statistically significant results about “sketchstorming” and prototyping suggest that, in certain constrained contexts, the focus should be on the quality of information rather than on the quantity of information generated, and that prototyping should begin as soon as possible during the design process. Ramifications of these findings are discussed in the context of educating future designers on the efficient use of design tools.

contrôle thermique, PCM, Engineering, computing & technology :: Aerospace & aeronautics engineering, and Ingénierie, informatique & technologie :: Ingénierie aérospatiale

A new concept of Phase Change Materials (PCM) device has recently been developed to improve the thermal control of spacecraft. Two Phase Change Material candidates have been selected after extensive testing of a set of available materials. Special attention has been paid to the hysteresis and ageing. In the design of the container, the thermal expansion of the PCM is a critical parameter that has been taken into consideration by two competing technologies. These designs have been tested: a prototype of PCM heat storage device has been effectivelymanufactured and tested under vacuum environment. 1D and 2D mathematical models have been developed. Conclusions are drawn to promote the use of PCM Heat Storage device in various space missions.

Additive manufacturing, Nanoparticle, Engineering, computing & technology :: Materials science & engineering, Ingénierie, informatique & technologie :: Science des matériaux & ingénierie, Engineering, computing & technology :: Mechanical engineering, and Ingénierie, informatique & technologie :: Ingénierie mécanique

In opposition to traditional machining in which part is manufactured by material removal, rapid prototyping techniques allow parts manufacturing by material addition. The part is built layer-by-layer and the sum of all layers creates the part. Currently, several techniques exist. They use different kind of materials (metals, ceramics, polymers) and technologies (laser melting, laser polymerising, 3D-printing, cladding, ...). Some of these techniques can deal with nanometric particles. In the case of which a near net shape part is built and must be sintered after shaping, the addition of nano-particles can be useful for sintering by increasing specific surface and reactivity of the batch or by improving the properties of the material. An overview about techniques of rapid prototyping allowing the processing of nanomaterials will be discussed. Tests have been done using Optoform process. This process uses a laser to polymerize a paste made of photo-curable resin loaded with powdered material. Nano-particles can be added and stabilized in the paste. In this presentation, the results obtained with both systems Al2O3 + nano Zr02 and SiC + Nano SiC will be discussed.