Avancerad sökning

Hittade 4 uppsatser som matchar ovanstående sökkriterier.

1. 1. Sensor system for pressure measuring over a sail : Construction and implementation of a sail pressure measuring system

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Filip Palm; [2022]
   Nyckelord :Oceanbird; Sail pressure; KTH; pressure sensor system; Environment; Oceanbird; tryckmätningssystem; miljö; KTH; tryckmätning segel;

   Sammanfattning : Wallenius Marine, KTH and SSPA are working together on a wind powered car carrier, that will ship cars over the atlatic. KTH has a small scale prototype of this vessel, and uses this prototype to test performance and new sensor systems, that can be used on the full scale vessel. LÄS MER

3. 2. Sunshade Demonstrator Spacecraft Earth Sphere of Influence Escape Using a Propellant-free AOCS

   Master-uppsats, KTH/Rymdteknik

   Författare :Leonardo Ricci; [2021]
   Nyckelord :Solar sail; Solar radiation pressure; Attitude control; Escape trajectory; Centre of pressure; Disturbance Torques; Eclipse.; Solsegel; Solstrålningstryck; Attitydkontroll; Flyktbana; Tryckcentrum; Störningsmoment; Eclipse.;

   Sammanfattning : This thesis provides insights to what is peculiar about a solar sail attitude and orbit control system and provides the assessment, in the form of a feasibility study, of the effectiveness of sail tip vanes as a control hardware to escape the Earth sphere of influence. The demonstrator aims to prove the technology for the Sunshade project, a constellation of solar sails located at the Lagrangian point L1 to obscure part of the solar radiation directed towards earth. LÄS MER

4. 3. Aerodynamics of Sailing Yachts : Force, Pressure and sail shape measurements as bridge between experiments and numerical simulations

   Master-uppsats, KTH/Marina system

   Författare :Francesco Giacobone; [2017]
   Nyckelord :;

   Sammanfattning : The present work reports the first systematic results obtained in wind tunnel and at full scale with theexperimental apparatus developed within the joint project among Politecnico di Milano, North Sails andCSEM. The steady state upwind aerodynamics of sailing yachts are investigated through the contemporarymeasurement of global forces, distributed pressures and sail flying shapes, and with numerical simulationsbased on Potential Theory and Navier-Stokes equations. LÄS MER

5. 4. An Aeroelastic Implementation for YachtSails and Rigs

   Master-uppsats, KTH/Marina system

   Författare :Aron Helmstad; Tomas Larsson; [2013]
   Nyckelord :;

   Sammanfattning : An aeroelastic model has been developed to determine the elastic response of sailing yachts’ rigs and sails due to the aerodynamic pressure induced on the sails by the wind. A vortex-lattice method (VLM) is used to determine the aerodynamic pressure. The structural response is calculated with a non-linear finite element method (FEM). LÄS MER