Essays about: "thruster control"

Showing result 6 - 10 of 15 essays containing the words thruster control.

  1. 6. Development and testing of algorithms for optimal thruster command distribution during MTG orbital manoeuvres

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Lars Sprengelmeyer; [2020]
    Keywords : linear programming algorithms; linear optimization; thruster command distribution; thruster control; Simplex; Karmarkar s method; minimum power controller; minimum flow rate controller; minimum control authority;

    Abstract : An accurate satellite attitude and orbit control is a key factor for a successful mission. It guarantees for example sun acquisition on solar panels, fine pointing for optimal telescope usage or satellite lifting to reach higher orbits, when required. READ MORE

  3. 7. The I2T5 : Enhancement of the Thermal Design of an Iodine Cold Gas Thruster

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Roger Michael Pereira; [2020]
    Keywords : Cold gas thruster; I2T5; CubeSat propulsion; thermal analysis; heat transfer; thermal resistance; orbital heat fluxes;

    Abstract : The I2T5, an iodine-propelled, cold gas thruster, developed by ThrustMe, France, is the first of its kind to make it successfully to space. Due to its simple, reliable and cost-effective design, it is a suitable propulsion system for CubeSat missions with low delta-V (ΔV) requirements. READ MORE

  4. 8. Analysis of Hall effect thrusters using Hybrid PIC simulations and coupling to EP plume

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : David Villegas Prados; [2020]
    Keywords : Hallis; SPIS; EP; plume; hybrid PIC; Hall effect; HET; inside channel; plume expansion;

    Abstract : In the last 30 years, numerical models have been developed to properly analyze Hall eect thrusters (HET),leading to a bridge between analytical prediction/empirical intuition and experiments. For companies in thespace sector, these codes serve to much more than simply simulating the thruster, but it provides a fast, cheapand reliable tool for processes such as validation and verication procedures, as well as for technical developmentof the thruster. READ MORE

  5. 9. Nonlinear MPC for Motion Control and Thruster Allocation of Ships

    University essay from Linköpings universitet/Reglerteknik

    Author : Alexander Bärlund; [2019]
    Keywords : MPC; nonlinear MPC; model predictive control; thruster allocation; thrust allocation; motion control; motion control system; ship; dynamic positioning; azimuth; azipod;

    Abstract : Critical automated maneuvers for ships typically require a redundant set of thrusters. The motion control system hierarchy is commonly separated into several layers using a high-level motion controller and a thruster allocation (TA) algorithm. READ MORE

  6. 10. Non-linear Model Predictive Control for space debris removal missions

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Alexander Korsfeldt Larsén; [2018]
    Keywords : ;

    Abstract : The rapidly increasing amounts of space debris orbiting Earth is threatening to reach a critical level, where the near-Earth environment becomes so overfilled with junk that many missions simply become unfeasible. Long-term active debris removal operations appear to be a necessity, but due to the scale of the problem this will likely be an expensive affair spanning decades or even centuries. READ MORE