Brothers Alex and David Pastor direct this Spanish horror centering around the life of project manager Marc (Quim Gutiérrez). After news breaks revealing that noxious gases are slowly consuming the earth, Marc and his colleagues become trapped in their office; they quickly run out of food and supplies and start to fear the outside world. Three months pass and Marc decides he needs to find his girlfriend, Julia (Marta Etura), and so with the help of his boss Enrique (José Coronado) Marc attempts to search Barcelona until he finds her. What will await him when he opens the door?

The purpose of this book is to illustrate step by step the design of the Composite Wing Structure of the external wing for an Unmanned Aerial Vehicle- UAV. The design is conducted using software tools for Finite Element Analysis, such as, NASTRAN and ANSYS to find the structural integrity limits for composite materials and fittings. Data for this study were obtained from AEROTECH Research Group at Universidad de San Buenaventura, Bogota, Colombia. Finite Element Methods are used in order to evaluate the static strength, maximum stresses and buckling behavior of composite structures. Sections, such as spars, webs and caps, ribs, skins and stringers assemblies are analyzed to get the best strength to weight ratio and its manufacturing procedure. The analysis should be especially useful to professionals in Aerospace and Mechanical Engineering, or anyone else who may be considering utilizing design methodologies to analyze structural configurations of composite structures using Finite Element Methods and the conceptual manufacturing procedures for further fabrication.

La industria aeroespacial mundial mira las aeronaves no tripuladas, mas conocidas como drones, como una herramienta indispensable para tareas de seguridad y vigilancia, ya que se logra disminuir los costos de fabricacion y operacion, al tiempo que se reduce el riesgo para las tripulaciones. El presente libro pretende establecer un metodo de diseno de aeronaves no tripuladas teniendo como base diferentes autores expertos en el tema y la experiencia obtenida en la Universidad de San Buenaventura Bogota con el proceso de diseno, construccion y pruebas de vuelo de prototipos anteriores. Se buscara cumplir con algunos requerimientos planteados por el grupo de investigacion AeroTech, pero teniendo como prioridad lograr una aeronave versatil, de facil transporte y ensamble y con facilidad de mantenimiento e inspeccion de sus elementos a bordo. El proceso utilizado servira a aquellas personas interesadas en el diseno de aeronaves tanto tripuladas como no tripuladas y en el estudio de la mecanica del vuelo. Asi mismo, sera una herramienta util para determinar los equipos y sistemas necesarios a bordo segun las regulaciones aplicables."