Earth-Asteroid Transfer Design with Analytic Curve-Fitting Functions

The proposed method in this study pretends to improve the mission analysis procedure by generating a tool that allows to rapidly compute the main parameters and characteristics of a SEP transfer towards an arbitrary PHO, avoiding the application of complex numerical methods in the preliminary phases of the mission design process to improve its...

Fast computation of SEP transfers to Mars using analytic curve-fit functions

The increasing interest in solar electric propulsion techniques, that enable significant propellant mass savings for a wide class of transfers, has brought about a revolution in the approach to trajectory design and optimization, as a result of the complexity and diversity of the problem. To date, solutions of different nature exist, but...

Identification of Probe of an Atomic Force Microscope Using Curve Fitting

<br/>In recent years the Tapping Mode-Atomic Force Microscope (TM-AFM) has become one of the most important tools for imaging on the nanometer scale. In comparison with other contemporary technologies, the AFMs have been able to obtain atomic resolution both in high vacuum and liquid environments thus affirming their supremacy. The AFM can be...

Local Buckling Analysis of Thin-Wall Shell Structures

This master thesis presents research into buckling of thin hyperboloid shells structures. This type of structure is typically applied as the large cooling towers at coal fired electricity plants. However, modelling cooling towers is not the objective of this research. The objective of this research is to understand the buckling behaviour of...

Identification of response amplitude operators for ships based on full scale measurements

Heerema Marine Contractors (HMC) operates several crane vessels, barges and tug boats for the transportation, the installation and the removal of offshore facilities. To achieve safe and successful projects, the accurate prediction of vessel motions is of great importance. Vessel motions are calculated on the basis of wave energy spectra and...

Implementing and evaluating a simplified transistor model for timing analysis of integrated circuits

Static Timing Analysis (STA) is one approach to verify the timing of a digital circuit. The currently used Gate Level Model (GLM) has limitations on performing STA for circuits when taking process variations into consideration. The transistor level model is developed taking the statistical factors into account. This thesis presents an...

The application of piecewise polynomials to problems of curve and surface approximation

For many years, long, thin strips of wood or some other material have been used by draftsmen to fair in a smooth curve between specified points. These strips or mechanical splines are kept in place by attaching lead weights called "ducks " at points along the strip. In order to represent similar smooth curves mathematically, the concept of...