Offene Themen für Semester- und Abschlussarbeiten am Lehrstuhl für Hubschraubertechnologie

Bachelor/Semester/Master thesis: Robust Helicopter Rotor State Estimation for High-Bandwith Control Laws (26.03.2021)

We offer an exciting opportunity to work on a high-bandwidth helicopter flight control system for our rotorcraft simulation environment. The thesis will aim to study the theoretical frameworks on state estimation and apply it to higher-order linear state space models of a bearingless helicopter. The student will seek to answer the research question:

  • How can the rotor states be estimated robustly and accurately using only the measurements of the fuselage states and a higher-order state-space model?

  • How can the estimated rotor states be used in the feedback control laws to improve bandwidth and stability characteristics?

  • How do human pilots perceive rotor state feedback control laws?

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Bachelor/Semester/Master thesis: Development and Validation of Helicopter Pilot-Controller-Vehicle Models (23.03.2021)

We offer an exciting opportunity to develop human biodynamic models for our rotorcraft simulation environment. The student will have the chance to study the factors influencing a human pilot’s actions in a helicopter cockpit with different autopilot modes.

The student will analyze data from a recent test campaign conducted with experimental pilots and different flight control modes. The student will study the relevant human pilot models given in the literature. The ultimate goal is to develop a suitable pilot-controller-vehicle system model that can replicate similar pilot behavior in helicopter flight tasks as the human pilots.

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Bachelor/Semester/Master thesis: Fluid Structure Interaction Investigation of a Dynamically Camber Morphing and Pitching Rotor Airfoil (01.03.2021)

Active camber morphing airfoils have a major potential to improve the efficiency of rotor blades by adapting to the various inflow conditions occurring over a rotor revolution. In comparison to traditional trailing edge flaps the continuous changes in camber show improvements for the lift-to-drag ratios by maintaining a similar lift.

The Fish Bone Active Camber (FishBAC) device was shown to be a promising approach for implementation. Due to the highly flexible structure of the FishBAC, aeroelastic effects play a crucial role and can have a vast influence on the aerodynamic performance of the airfoil. In previous studies a high-fidelity fluid-structure interaction simulation was build up with the CFD-solver TAU, the FEM-solver Calculix and the coupling library preCICE.

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