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A. Bello

Kaduna Polytechnic

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E. Laredo

Simón Bolívar University

Ernesto Pérez

Instituto de Ciencia y Tecnología de Polímeros

J. G. Fatou

Instituto de Ciencia y Tecnología de Polímeros

J. M. Pereña

Instituto de Ciencia y Tecnología de Polímeros

M. Grimau

Ibero American University

P. Sánchez

Universidad Politécnica de Madrid

Rosario Benavente

Instituto de Ciencia y Tecnología de Polímeros

Victoria Lapuerta

Universidad Politécnica de Madrid

Karl Olfe

Universidad Politécnica de Madrid

J. Rodríguez

Universidad Politécnica de Madrid

Cooperative Institutions

Consejo Superior de Investigaciones Científicas

Instituto de Ciencia y Tecnología de Polímeros

Universidad Politécnica de Madrid

Simón Bolívar University

Universidad Complutense de Madrid

Universidad Simón Bolívar

Universitat Politècnica de València

University of Chile

Universitat de València

University of the Basque Country

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Diseño concurrente de una misión espacial como reto educativo UPM Concurrent Engineering Challenge

P. Sánchez Juan Manuel Del Cura Velayos Ana Laverón-Simavilla Jacobo Rodríguez Otero A. Bello

Este proyecto de Innovacion Educativa, liderado desde la ETSIAE y desarrollado en colaboracion con otras Universidades, ha promovido la organizacion del UPM Concurrent Engineering Challenge (Reto de Diseno Concurrente de la UPM). El proyecto pretende combinar el Aprendizaje Basado en Retos (ABR) y el Diseno Concurrente en el ambito de la Ingenieria Aeroespacial, en particular, de la Ingenieria de Sistemas y diseno Preliminar de Vehiculos Espaciales. Como reto educativo, se propone el diseno preliminar de una mision espacial sujeto a un documento de requisitos. El diseno se realizara a lo largo del curso bajo la supervision del profesorado, colaborativa y paralelamente con otras Universidades, y utilizando una herramienta de diseno concurrente.

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Sloshing reduction in microgravity: Thermocapillary-based control and passive baffles

Physics of Fluids (2023)

C. Peromingo D. Gligor P. Sánchez A. Bello Karl Olfe

In this work, we numerically analyze different thermocapillary-based strategies for active control of sloshing in microgravity. The fluid system considered is an open rectangular container holding a L×H=30 × 15 mm2 volume of liquid. A classical controller is implemented to reduce the natural sloshing motion of the system, which is characterized by its decay time τd. The controller produces an output signal ΔT that is applied anti-symmetrically at the lateral walls of the container, driving thermocapillary flow. Its performance is characterized via the functional P=(1−λ) τ̂+λ κ̂, which allows for a trade-off between the damping of unwanted sloshing modes and the cost of implementing the control, with normalized decay time τ̂ and cost κ̂, and modulated by λ∈[0, 1]. We optimize P for discrete values of λ and determine the optimal performance envelope. The results show that thermocapillary controllers are generally able to reduce τd by a 50% factor, with reasonable cost and controller output. A novel strategy combining thermocapillary controllers and passive baffles is further proposed and assessed. On their own, passive baffles can reduce the natural decay time of sloshing by an 80% factor at zero cost. In addition, they significantly alleviate the thermal requirements associated with the control, while providing additional improvements in τd. Finally, the aforementioned strategies are tested against a reboosting maneuver of the International Space Station, showing their potential for sloshing reduction in microgravity.

Slosh dynamics

Baffle

Flow Control

10.1063/5.0170304

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Poly(hexamethylphosphoramide) and Its Copolymer

Macromolecules (1970)

A. Bello W. Bracke J. Jagur‐Grodzinski G. Sackmann M. Szwarc

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(hexamethylphosphoramide) and Its CopolymerA. Bello, W. Bracke, J. Jagur-Grodzinski, G. Sackmann, and M. SzwarcCite this: Macromolecules 1970, 3, 1, 98–100Publication Date (Print):January 1, 1970Publication History Published online1 May 2002Published inissue 1 January 1970https://doi.org/10.1021/ma60013a021RIGHTS & PERMISSIONSArticle Views55Altmetric-Citations6LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (312 KB) Get e-Alerts Get e-Alerts

Hexamethylphosphoramide

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10.1021/ma60013a021

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Comparison of Fuzzy and PID Controllers for the Attitude Control of Nanosatellites

Advances in intelligent systems and computing (2018)

Daniel Calvo A. Bello Victoria Lapuerta Ana Laverón-Simavilla

Robustness

10.1007/978-3-030-01057-7_79

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The γ relaxation in polymers containing ether linkages: conformational dynamics in the amorphous phase for a series of polybibenzoates containing oxyethylene spacers

N. Heaton Rosario Benavente Ernesto Pérez A. Bello J. M. Pereña

Thermotropic crystal

10.1016/0032-3861(96)00228-5

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Experimental evidence of thermocapillarity in phase change materials in microgravity: Measuring the effect of Marangoni convection in solid/liquid phase transitions

International Communications in Heat and Mass Transfer (2020)

J.M. Ezquerro P. Sánchez A. Bello J. Rodríguez Victoria Lapuerta

10.1016/j.icheatmasstransfer.2020.104529

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Microhardness as a thermally activated process: Indentation time dependence for an amorphous copolyester

Journal of Applied Polymer Science (1993)

Vicente Lorenzo Rosario Benavente Ernesto Pérez A. Bello J. M. Pereña

Abstract Vickers microharness, MH, measurements have been performed on samples of a plasticized amorphous copolyterephthalate with different diluent contents. The dependence of MH on contact time is explained in terms of the Eyring equation and it has been found that the activation volume increases abruptly in the vicinity of the glass transition. © 1993 John Wiley & Sons, Inc.

Copolyester

Indentation

Diluent

10.1002/app.1993.070480705

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Comparative Analysis of Dielectric Spectra by Using a Distribution of Relaxation Times or a KWW Decay Function

APS March Meeting Abstracts (1998)

A. Bello E. Laredo M. Grimau

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Pathways and reaction products for the oxidative degradation of CO2 loaded and concentrated aqueous MEA and MEA/MDEA mixtures during CO2 absorption from flue gases

Elsevier eBooks (2005)

Olayide S. Lawal A. Bello Raphael Idem

Stoichiometry

Degradation

Flue

10.1016/b978-008044704-9/50122-1

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Effect of the Delay in Fuzzy Attitude Control for Nanosatellites

Advances in intelligent systems and computing (2019)

Ástor del Castañedo A. Bello Karl Olfe Victoria Lapuerta

10.1007/978-3-030-29516-5_73

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