Alejandro Fernández-Soler

Design of a COTS-Based, Low-Cost, Electronic Box to Standardize Student Balloon Applications

Blanca Boado-Cuartero, Ángel-Grover Pérez-Muñoz, J.M. Redondo, Pedro Barba-Navarrete et autres

Stratospheric balloons are a valuable platform for scientific and technological experiments, as they can reach altitudes of 20 to 40 km and stay aloft for weeks or months. However, designing electronic boxes for stratospheric balloons poses several challenges, such as thermal management, …

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Methodology for robust analysis of bolts slippage in cryogenic space missions

Alejandro Fernández-Soler, Andrés García-Pérez, G. Morgante, Javier Pérez-Álvarez et autres

The assessment of slippage in cryogenic space missions is fundamental from a mechanical point of view as it is one of the main failure modes of a bolt in a mechanical interface. It is usually performed on the basis of temperature maps …

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The telescope assembly of the Ariel space mission: an updated overview

E. Pace, Manuel Abreu, Gustavo Alonso, B. Barroqueiro et autres

Ariel (Atmospheric Remote-Sensing Infrared Exoplanet Large Survey) is the adopted M4 mission in the framework of the ESA “Cosmic Vision” program. Its purpose is to survey the atmospheres of known exoplanets through transit spectroscopy. The launch is scheduled for 2029. The scientific …

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Stratospheric balloon dynamics predictions for robust ascent phase payload thermal analysis

Alejandro Fernández-Soler, David González-Bárcena, Ignacio Torralbo, Isabel Pérez-Grande

Stratospheric balloons are platforms with great relevance in space missions to reach scientific observations. The payload thermal analyses of such missions are usually focused on the float phase. However, during the ascent phase, the coolest temperatures of the entire mission may be …

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Temperature mapping methods for thermoelastic analyses of the ARIEL spacecraft payload module

Andrés García-Pérez, Alejandro Fernández-Soler, G. Morgante, Javier Pérez-Álvarez et autres

The ARIEL mission is a European space project that aims to detect exoplanets with a spacecraft orbiting around the L2 point of the Sun-Earth system. The main payload consists of a Cassegrain telescope composed of mirrors that reflect and concentrate the incoming …

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Aluminum based large telescopes: the ARIEL mission case

P. Picchi, Andrea Tozzi, Anna Brucalassi, Antonio José Araiza et autres

Ariel (Atmospheric Remote-Sensing Infrared Exoplanet Large Survey) is the adopted M4 mission of ESA “Cosmic Vision” program. Its purpose is to conduct a survey of the atmospheres of known exoplanets through transit spectroscopy. Launch is scheduled for 2029. Ariel scientific payload consists …

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Planning the integration and test of a space telescope with a 1 m aluminum primary mirror: the Ariel mission case

Paolo Chioetto, José A. Araiza-Durán, Umberto Barozzi, Lorenzo Barubiani et autres

Ariel (Atmospheric Remote-Sensing Infrared Exoplanet Large Survey) is ESA’s M4 mission of the “Cosmic Vision” program, with launch scheduled for 2029. Its purpose is to conduct a survey of the atmospheres of known exoplanets through transit spectroscopy. Ariel is based on a …

The electrical design of the thermal control systems of the all-aluminum ARIEL telescope

Vladimiro Noce, Mauro Focardi, Pierpaolo Merola, Andrea Tozzi et autres

The Atmospheric Remote-sensing InfraRed Large-survey (ARIEL) is a medium-class mission of the European Space Agency whose launch is planned by late 2029 whose aim is to study the composition of exoplanet atmospheres, their formation and evolution. The ARIEL’s target will be a …

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HERCCULES: A university balloon-borne experiment for BEXUS 32 to characterize the thermal environment in the stratosphere using COTS

David González-Bárcena, Blanca Boado-Cuartero, Ángel-Grover Pérez-Muñoz, Alejandro Fernández-Soler et autres

The thermal analysis of stratospheric balloon payloads is still a complex task due to the variable thermal environment during the flight phases as well as due to the convective effects during the ascent. An experiment named HERCCULES has been successfully launched from …

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Ascent phase thermal study of stratospheric balloon-borne payloads

Alejandro Fernández-Soler

Stratospheric balloons are highly relevant platforms for space missions to achieve scientific objectives. These platforms are becoming increasingly important because they can place payloads at an altitude above almost 99 % of the atmosphere, where the environmental conditions are very similar to …

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Experimental correlation of natural convection in low Rayleigh atmospheres for vertical plates and comparison between CFD and lumped parameter analysis

David González-Bárcena, Noelia Martínez-Figueira, Alejandro Fernández-Soler, Ignacio Torralbo et autres

This paper offers a comprehensive exploration of thermal analysis for space systems operating in low Rayleigh atmospheres, with a primary focus on enhancing the accuracy and reliability of convective heat transfer modeling. The study centers around an analysis of a vertical heated …

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Ascent phase convective heat transfer of a stratospheric-balloon-borne payload

Alejandro Fernández-Soler, David González-Bárcena, Ignacio Torralbo, Isabel Pérez-Grande

Stratospheric ballooning flights are becoming more relevant due to these platforms can place payloads to an altitude above almost 99% of the atmosphere, where the environmental conditions are very similar to the space ones. From a thermal point of view, during the …

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