Sökning: "Aerodynamic"

Visar resultat 11 - 15 av 270 uppsatser innehållade ordet Aerodynamic.

  1. 11. Feedback Linearization for Model Agnostic Aircraft Simulation Control

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Fredrik Horn; [2023]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This thesis presents a method, based on feedback linearization, for controlling a general 3-degree-of-freedom simulation model of an aircraft. Only aircraft models that utilize Taylor approximations of the aerodynamic coefficients are considered. LÄS MER

  3. 12. Implementation of Flight Mechanical Evaluation Criteria in an Aircraft Conceptual Design Tool with focus on Longitudinal Motions

    Master-uppsats, Linköpings universitet/Fluida och mekatroniska system

    Författare :Argyro Giota; Aleksandra Roszkowska; [2023]
    Nyckelord :flight mechanics; Pacelab APD 8.1; aerodynamic derivatives; equations of motion; B747; stability and control; longitudinal dynamics; phugoid mode; short period mode; DATCOM ; OpenVSP;

    Sammanfattning : This report focuses on the utilisation of flight mechanics in the context of aircraftconceptual design to assess stability, control, and motion characteristics. The pri-mary objective is to acquire the equations of motion and implement longitudinalstability and control criteria using Pacelab Aircraft Preliminary Design 8. LÄS MER

  4. 13. Range impact of a high velocity aft-propeller on a subsonic aerodynamic body

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Jens Teodor Mattsson; [2023]
    Nyckelord :propeller; transsonic; fluid dynamics; cfd;

    Sammanfattning : This master’s thesis is aimed to examine the possible range increase of a ballistically fying body equipped with a propeller working at transonic velocities. To determine whetherthe propeller will provide an improvement in range, results from simulations are compared to corresponding cases of similar bodies fying without a propeller. LÄS MER

  5. 14. Airspeed estimation of aircraft using two different models and nonlinear observers

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Alexander Roser; Anton Thunberg; [2023]
    Nyckelord :sensor fusion; flight mechanics; Kalman filter; extended Kalman filter; unscented Kalman filter; pitot tube; airspeed estimation; simulation;

    Sammanfattning : When operating an aircraft, inaccurate measurements can have devastating consequences. For example, when measuring airspeed using a pitot tube, icing effects and other faults can result in erroneous measurements. LÄS MER

  7. 15. Statistical Analysis on Aerodynamics of Passenger Vehicles

    Master-uppsats, Uppsala universitet/Sannolikhetsteori och kombinatorik

    Författare :Dingkang Peng; [2023]
    Nyckelord :statistics; aerodynamics; automotive engineering; causality; time series; cluster analysis;

    Sammanfattning : This thesis aims to use statistical methods to analyze wind tunnel data generated in automotive aerodynamics testing to understand the properties of aerodynamic force and pressure in a vehicle's working environment. The data used for analysis are visualized, clustered and finally analyzed for Granger causality to see whether a causal link exists between different variables. LÄS MER