Integration of on-board systems preliminary design discipline within a collaborative 3rd generation MDO framework

The integration of the on-board systems design discipline in a collaborative Multidisciplinary Design and Optimization (MDO) framework is presented in this paper. The collaborative MDO framework developed within the context of the EU funded H2020 AGILE project is selected as reference. The technologies developed or made available in the context of the AGILE project are employed for the integration within the MDO framework of ASTRID, an on-board systems design tool owned by Politecnico di Torino. The connection of the tool with a common namespace (i.e. CPACS) and its implementation within two Process Integration and Design Optimization (PIDO) environments are described. An application study is eventually presented, showing the benefits and the potentialities of the integration of the on-board systems design discipline within a collaborative MDO framework

Integration of on-board Systems preliminary design discipline within a collaborative 3rd Generation MDO framework

The integration of the on-board systems design discipline in a collaborative Multidisciplinary Design and Optimization (MDO) framework is presented in this paper. The collaborative MDO framework developed within the context of the EU funded H2020 AGILE project is selected as reference. The technologies developed or made available in the context of the AGILE project are employed for the integration within the MDO framework of ASTRID, an on-board Systems design tool owned by Politecnico di Torino. The connection of the tool with a common namespace (i.e. CPACS) and its implementation within two Process Integration and Design Optimization (PIDO) environments are described. An application study is eventually presented, showing the benefits and the potentialities of the integration of the on-board systems design discipline within a collaborative MDO framework

A multidisciplinary approach to estimating wolf population size for long-term conservation

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GRAWITA: VLT Survey Telescope observations of the gravitational wave sources GW150914 and GW151226

We report the results of deep optical follow-up surveys of the first two gravitational-wave sources, GW150914 and GW151226, done by the GRAvitationalWave Inaf TeAm Collaboration (GRAWITA). The VLT Survey Telescope (VST) responded promptly to the gravitational wave alerts sent by the LIGO and Virgo Collaborations, monitoring a region of 90 and 72 deg2 for GW150914 and GW151226, respectively, and repeated the observations over nearly two months. Both surveys reached an average limiting magnitude of about 21 in the r band. The paper describes the VST observational strategy and two independent procedures developed to search for transient counterpart candidates in multi-epoch VST images. Several transients have been discovered but no candidates are recognized to be related to the gravitational wave events. Interestingly, among many contaminant supernovae, we find a possible correlation between the supernova VSTJ57.77559-59.13990 and GRB150827A detected by Fermi-GBM. The detection efficiency of VST observations for different types of electromagnetic counterparts of gravitational wave events is evaluated for the present and future follow-up surveys

GRAWITA: VLT Survey Telescope observations of the gravitational wave sources GW150914 and GW151226

We report the results of deep optical follow-up surveys of the first two gravitational-wave sources, GW150914 and GW151226, done by the GRAvitational Wave Inaf TeAm Collaboration (GRAWITA). The VLT Survey Telescope (VST) responded promptly to the gravitational wave alerts sent by the LIGO and Virgo Collaborations, monitoring a region of 90 and 72 deg2 for GW150914 and GW151226, respectively, and repeated the observations over nearly two months. Both surveys reached an average limiting magnitude of about 21 in the r band. The paper describes the VST observational strategy and two independent procedures developed to search for transient counterpart candidates in multi-epoch VST images. Several transients have been discovered but no candidates are recognized to be related to the gravitational wave events. Interestingly, among many contaminant supernovae, we find a possible correlation between the supernova VSTJ57.77559-59.13990 and GRB 150827A detected by Fermi-GBM. The detection efficiency of VST observations for different types of electromagnetic counterparts of gravitational wave events is evaluated for the present and future follow-up surveys

Azaridachta indica A. Juss e Tithonia diversifolia (Hemsl.) A. Gray come fonti di composti bioattivi

Plants have always been sources of bioactive compounds. Whit the characterization of Azaridachta indica and Tithonia diversifolia we were able to isolate and identify derivatives of quercetin, kaempferol and sesquiterpene lactones such as tagitinin A and C

Preliminary Study on OBS Electrification Efficiency for Advanced Supersonic Business and Medium Jet with Unified Engines

The present paper would investigate the effect of on-board systems masses and power required on propulsion system and aircraft mission performance of two reference supersonic aircraft. The on-board systems are even more investigated since their importance in engine and aircraft performance optimization and their effect can be only quantified through a multidisciplinary design. Moreover, with the introduction of more and all electric concepts for on-board systems, more flexibility in their design is now possible considering different architectures. In particular, the analysis involves a supersonic business jet and a supersonic medium jet with different performance, passengers number and propulsion system. The analysis shows different behaviours on the propulsion system parameters with power offtakes and systems mass variations for the two aircraft. The results are interesting for future systems architecture selection and to understand the effect of their integration to the propulsion system

Schede per una Lista Rossa della Flora vascolare e crittogamica Italiana: Centaurea kartschiana Scop. subsp. kartschiana

Valutazione dello stato di conservazione di Centaurea kartschiana Scop. subsp. kartschiana per la Lista Rossa della Flora vascolare e crittogamica Italian

Method for Estimation of Electrical Wiring Interconnection Systems in Preliminary Aircraft Design

The aim of this paper is to present an original methodology for Electrical Wiring Interconnection System (EWIS) mass estimation at an early stage of aircraft design. More than 100 km of EWIS are installed on a modern civil aircraft with a mass of several tons. The aircraft manufacturers are increasing the primary generation voltage to reduce the system mass. The proposed algorithms are sensitive to the prominent EWIS design parameters such as voltage level, cable material, system architecture (distributed or centralized) and electrification degree of aircraft on-board systems. The equations assess the impact of these parameters on the EWIS mass, which is a useful feature during trade-off analysis in aircraft conceptual and preliminary design. The methodology and the necessary data to define the algorithms are reported together with a case study to validate the equations presented