Sökning: "Spacecraft"

Visar resultat 31 - 35 av 199 uppsatser innehållade ordet Spacecraft.

1. 31. Resonance Mitigation in the Attitude Control of a Flexible Large Solar Sail

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Jonas Linnros; [2023]
   Nyckelord :Resonance; Control theory; Mechanics; Solar sail; PID; Space; Resonans; Reglerteknik; Mekanik; Solsegel; PID; Rymd;

   Sammanfattning : This project is about the design process of a resonancemitigating algorithm for a large solar sail. The solar sail isa structure made up by four long booms in a cross patternwith suspended sails between the edges of the booms. Thespacecraft in this report is controlled using smaller rotatingsails at each tip of the booms. LÄS MER

3. 32. Attitude and orbit control analysis of a solar sail spacecraft for Space sunshade missions in the vicinity of the sub-Lagrange 1 point

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Benjamin Jouanneau; [2022]
   Nyckelord :;

   Sammanfattning : This Master thesis report contains a complete attitude and orbit control analysis for solar sail spacecraft in the Circular-Restricted-3-Body-Reference frame. The overall goal of the project is to drive one solar sail from the edge of the Earth Sphere of Influence to a vicinity of the sub-Lagrange1 point. LÄS MER

4. 33. Development of a Level-0 Geoprocessing Platform for a Multispectral Remote Sensing Payload

   Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Författare :Sergio Santiago Bernabeu Peñalba; [2022]
   Nyckelord :Infrared imagery; VIS; NIR; LWIR; geoprocessor; geolocation; quaternions; Aistech Space; image processing; ORB; RANSAC; Sentinel; Landsat; Infraröda bilder; VIS; NIR; LWIR; geoprocessor; geolokalisering; kvarternioner; Aistech Space; bildbehandling; ORB; RANSAC; Sentinel; Landsat;

   Sammanfattning : This thesis presented an overview of the development of a geolocating algorithm as part of a geoprocessor for raw satellite imagery. This algorithm was devised for and limited by the specifications of a state-of-the-art multispectral telescope designed by Aistech Space, hosted onboard the Guardian spacecraft, which will observe Earth through the visible, near infrared, and thermal infrared bands of the electromagnetic spectrum. LÄS MER

5. 34. Small Satellite Design for High Sensitivity Magnetic Measurements

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Noel Sebastian Janes; [2022]
   Nyckelord :Magnetic Cleanliness; FORESAIL; CubeSats; High Sensitivity Magnetic Measurements; Small Satellite;

   Sammanfattning : The magnetic cleanliness of a spacecraft during magnetic measurements is an important aspect in the design of many space science missions. The adequate reduction or removal of the spacecraft's magnetic disturbance plays a vital role in allowing the ambient magnetic field to be measured with the required accuracy. LÄS MER

7. 35. Validation of the attitude control of KNATTE with flexible appendages

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Christoffer Johansson; [2022]
   Nyckelord :KNATTE; flexible appendages; control; SMC; LQG; PWM; PWPF;

   Sammanfattning : The effect of flexible panels on a spacecraft during attitude movement may induce problems if not correctly accounted for in the control system for the spacecraft. The aim of this thesis is to find and evaluate, control algorithms that could be suitable for the Kinesthetic Node and Autonomous Table-Top Emulator (KNATTE) with two flexible mock-up solar panels during an attitude movement of 20 degrees. LÄS MER