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PHYS 3Pxx lab report
PHYS 3Pxx lab report
A lab report template, suitable for any of the PHYS 2Pxx/3Pxx courses at Brock University.
Edward Sternin
Air quality predictor
Air quality predictor
Machine learning project report. The project aimed at predicting air quality based on weather and its code is available at https://github.com/annisall/mlproject.
Anniina Sallinen
Data acquisition from mobile sensors
Data acquisition from mobile sensors
Coursework project on data analysis. Using machine learning and android sensors data to predict whether gadget is located indoors or outdoors.
Matvey
MV013 final assignment report
MV013 final assignment report
Template for the final assignment report for the course MV013 Statistics for Computer Science taught at the Faculy of Informatics, Masaryk University, Brno.
Pavel Břoušek
Inleiding tot R
Inleiding tot R
Dit is een Nederlandstalige bijdrage vanwege Ludo Poelaert, UGent. In deze korte tekst wordt een inleiding tot de taal R gegeven. U mag de tekst vrij gebruiken onder het Creative Commons CC BY 4.0 . Succes ermee.
Professor Ludo Poelaert
Bi8773 DU
Bi8773 DU
Template for homework assigment for Bi8773 at Masaryk University
Mojmír Vinkler
FSC1004-LISTA-02
FSC1004-LISTA-02
Lista de exercícios para disciplina de computação básica para física - Fortran na UFSM
Hans Rogério Zimermann
SOLAR SALES ON YOUR TRIP TO MARS
SOLAR SALES ON YOUR TRIP TO MARS
We study Logarithmically Spiral Trajectories and, in particular, we look for a solution to minimize the transit time of a Spacecraft propelled by a Solar Sail, while simultaneously minimizing the area of the Solar Sail, which would allow us to carry more payload on board. We start by analyzing the forces that act on the Spacecraft taking into account that its propellant is a Solar Sail; we use the studied forces to deduce the motion equations. We then solve this motion equation with a Runge-Kutta 4 method and transform the problem of minimizing time and area to a Non-linear Optimization problem. When solving the NLP we also try to minimize the relative final speed of th spacecraft with the destination planet in order to guarantee the possibility of a safe landing on its surface. The model improves when an angle parameter α (describing the angle formed by the Solar Sail with the colliding photons) is defined as a piecewise constant function and optimized whose values are optimized in every interval to minimize transit time and Area. Using the developed model to optimize the trajectory to be followed for sending from Earth to Mars a 2000kg-spacecraft propelled by a Solar Sail, subject to the condition that at trajectory start Mars and Earth were at their closest approach, and the Arrival Relative Velocity is less than 9km/s, give us a minimal transit time of 500days and a minimal area for the Solar Sail of 183158m2, meaning that the maximal payload would be 718kg. Compared with different number of partitions of α, the optimum stays stable. This gives a solid optimal trajectory and a great result for the numerical method used. Actually, waiting until the best moment to throw the Spacecraft, id est, Mars is at 1.14 radians respectively to Earth initial position, the minimal sail area 145950 m2 and, therefore, ables to transport until 978 kg of payload with the same transit time. In addition and to conclude we tried the model to optimize the inverse trajectory.
Marco Praderio Bova, Eneko Martin Martinez, & Maria dels Àngels Guinovart Llort

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