Bruno Assis Email & Phone Number

Minas Gerais, Brazil

São José Dos Campos, São Paulo, Brazil

São José Dos Campos

Responsável por desenvolver automatizações para otimizações de processos internos, rotinas em Python, traduzir textos para o inglês e revisar documentos em inglês, contribuir em atividades de análise de mercado, elaborar apresentações e analisar limitações operacionais da operação de eVTOLs.

Viçosa, Minas Gerais

After leaving the Skywards team, but undoubtedly still excited about the aeronautics field, I noticed the possibility and necessity of developing an Undergraduate Research focused on the automated optimization of airfoils for the SAE BRASIL AeroDesign competition - an unprecedented endeavor for the team - and received a grant from CNPq for it.Initially, dozens of profiles available on the internet with desirable characteristics for the project were selected. Then, several parameterization methods - the method by which is defined the outline of the airfoils - were compared (some of my own authorship), applying them to those chosen profiles.I challenged myself to perform this process through VBA - although I was by no means familiar to it - and after completing thousands of parameterizations and transferring all data to a common place, I verified that the B-Sky method, of my own authorship, stood out among the others. Later, nevertheless, I discovered a serious problem in the technique and ended up choosing the Bézier curves parameterization.For the optimization, I wrote a code in Matlab® (afterwards it was converted to Octave®) able to create and simulate the profile in XFoil® and to capture the geometric, structural, and aerodynamic parameters, orderly placing them in a Structure-Array. In addition, I developed a formula for comparison between airfoils that includes the main coefficients that foster the increase in lift force at the end of takeoff, since this is the goal of the competition. The optimization was done using the NSGA-II genetic algorithm, and the ULH algorithm created the initial population.As a result - in comparison with Selig 1223 - was obtained an airfoil displaying notable structural, aerodynamic, construction, aeroelastic, and in-flight performance benefits and which ensures an increase of up to 30% in the developed formula.

Minas Gerais, Brazil

The Skywards UFVoa de AeroDesign team is dedicated to design, build and fly a radio-controlled aircraft for the SAE BRASIL AeroDesign competition since 2010.As a member of the aerodynamics sub-team, I was responsible for performing countless investigations in an aerodynamic software vaguely known by the team, discovering key details to ensure its reliability and justify its use as the chief aerodynamic analysis software for the project.Through it, I analyzed several challenging and innovative configurations, as the Box-Wing, Tandem, elliptical wing, and the team's final design: a biplane with no fuselage. Through it, I also developed a more thorough and reliable analysis for the ground effect that included all the airplane's lift surfaces, apart from the propeller.Furthermore, due to the complexity of the airplane configuration and the interpenetration of stability, aerodynamics, structures, and performance sub-teams, an effective interaction between ourselves was necessary to avoid any design problem.All this contributed to improving the aerodynamic design report score by almost 25%, securing a difference of fewer than 1.5 points over one of the top three teams in the competition, moving from 35th place to 12th - our best placing since 2015.

Minas Gerais, Brazil

In 2018, responsible for:Defining the variable bounds of the optimization in conjunction with the team;Determining the optimization algorithm among the available genetic algorithms;Selecting the most appropriate values for the genetic operators;Determining the objectives;Creating an algorithm for preliminary calculation of the empty weight of the aircraft;Debugging the algorithms that define the aircraft preliminary design;Recovering the simulation results obtained - after a forced shutdown of the program -, contained in thousands of different folders through a code in Matlab®;Interpreting and analyzing the final results. The optimization provided an increase of almost 1kg (7%) in the maximum takeoff weight in comparison with the aircraft manually designed by the team in the same year.__In 2019, responsible for:Creating and organizing the workflow within modeFRONTIER®;Choosing the variables and defining their limits in conjunction with the team;Writing the codes in Matlab® for the design and simulation of the aircraft;Determining the objectives;Choosing the genetic algorithm and the values of the genetic operators.Despite working tirelessly for three months, the executive board and I concluded that the MDO should be abandoned that year due to financial and deadline issues, making us proceed with the manual project that was already at an advanced stage.__In general, the interaction with members from different sub-teams was fundamental to elaborate an MDO compatible with all the needs and goals of the team's design and with the requirements of the competition.At the end of the period, I wrote a handbook with more than one hundred pages elucidating in detail the optimization process, explaining the fundamental concepts of genetic algorithms and Pareto frontier, describing the genetic algorithms available in modeFRONTIER®, the workflow, how to interpret the results and several other important information for the use of the software.

Minas Gerais, Brazil

In 2018, after leading the Stability and Control sub-team, I was invited to be the president of the team, and - although I was still very timid - I accepted the great challenge. I was one of those responsible for the transition from manual design to the MDO, which provided greater integration between the sub-teams and an increase in the aircraft maximum takeoff weight by almost 1kg. Moreover, the executive board made the first installation ceremony aiming to recognize the effort of the members and motivate them. We adopted also more effective fundraising approaches and used for the first time laser cutting to manufacture the ribs of the aircraft, ensuring greater correspondence between the theoretical design and the built aircraft, besides the acceleration of the construction process. Moreover, I attended and encouraged the attendance at the AeroDesign Forum promoted by SAE BRASIL AeroDesign. I was as well responsible for writing the first "President's Handbook", with all the learnings obtained during the time, aiming to speed up the adequacy of new members to the position, giving advice, names of raw material suppliers, making observations about the days of the competition and the provisions of documents to SAE, among other considerations.That year, differently from the previous ones, we printed all the design reports and, during the competition, reminded the team that we strongly wanted all the sub-teams to seek its judges' face-to-face feedback to understand our mistakes and successes and to align more our project and design reports to the competition purposes. This goal was accomplished in the following year, with, perhaps, the best design report score and placement in the team's history.

Minas Gerais, Brazil

Soon after my approval in the team’s trainee program, I was appointed as Stability and Control sub-team leader, being responsible for ensuring the control and stability of the designed aircraft.Due to the challenge imposed by the requirements of the competition – which restrained the size of the aircraft by a cone –, I created an Excel® workbook capable of comparing multiple dimensions of horizontal and vertical tail for a given wing because the team wanted to design the most optimized aircraft possible, sufficiently stable and controllable, which would fit in the cone. In addition, I deepened the dynamic stability analyses in Matlab® by performing them for various flight conditions.Thus, despite the extreme change from trainee to leader, we obtained a satisfactory progress for the Stability and Control sub-team and design report.