Essays about: "guillermo"

Showing result 6 - 10 of 34 essays containing the word guillermo.

  1. 6. SUSTAINABLE LUBRICATION FOR FUTURE TRANSMISSIONS : Micropitting performance of Glycerol-based lubricants

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Zapata Tamayo Juan Guillermo; [2021]
    Keywords : micropitting; mild sliding wear; surface coating; diamond-like carbon DLC; glycerol-based lubrication; green lubricant; rolling contact fatigue; rolling-sliding;

    Abstract : Achieving sustainable lubrication by using environmentally friendly formulated lubricants has became an essential component of the transition process from fossil-powered vehicles to electrified transportation. Mixtures, or aqueous solutions of molecules such as polyhydroxy alcohols, and glycols usually known as green lubricants make it possible to achieve low friction coefficients under different lubrication conditions, which constitutes a potential alternative to improve the tribological performance of moving parts in automotive systems, at the same time that the environmental requirements are satisfied. READ MORE

  3. 7. Design and Virtual Validation of a Fixture/Clamping Device Used in Boring Experiments

    University essay from Högskolan i Skövde/Institutionen för ingenjörsvetenskap

    Author : Aitor Igartua Urzelai; Guillermo Roldan Garcia; [2021]
    Keywords : ;

    Abstract : The present work is classified within the framework of the final thesis in mechanical engineering at Högskolan i Skövde. The aim is to carry out a literature review and a subsequent analysis of how workpiece clamping is performed in the thin-walled machining industry. READ MORE

  4. 8. Techno-economic Analysis and Market Potential Study of Solar Heat in Industrial Processes : A Fresnel Direct Steam Generation case study

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Guillermo de Santos López; [2021]
    Keywords : Solar heat in industrial processes; techno-economic analysis; market potential; direct steam generation; Fresnel technology;

    Abstract : The industrial sector not only has a big contribution to global emissions but also a low share of renewable energy for heat demand. Knowing that most of the energy consumption in industry is heat and that half of it is at medium-low temperature (below 400 ºC), it is a great market for the integration of solar thermal technologies. READ MORE

  5. 9. Numerical optimization ofsolar sail trajectories to Mars

    University essay from KTH/Rymdteknik

    Author : Guillermo Martínez Cabalga; [2020]
    Keywords : ;

    Abstract : Typical propulsion systems for space transportation involve the ejectionof mass for momentum gain. Solar sails remove the requirement forpropellant mass by obtaining their momentum from solar photons, whichrequires large surface area and very low mass. READ MORE

  6. 10. Guidance and Control for Launch and Vertical Descend of Reusable Launchers using Model Predictive Control and Convex Optimisation

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Guillermo Zaragoza Prous; [2020]
    Keywords : Model Predictive Control; RLV; Rocket; Guidance; Control; GNC; Vertical Landing; Vertical Launch; Convex Optimisation; Reusable Launcher;

    Abstract : The increasing market of small and affordable space systems requires fast and reliablelaunch capabilities to cover the current and future demand. This project aims to studyand implement guidance and control schemes for vertical ascent and descent phases ofa reusable launcher. READ MORE