Browsing by Author "Ignatev, Dmitrii"

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    Data for: Ground Vibration Testing of a High Aspect Ratio Wing with Revolving Clamp
    (Cranfield University, 2022-12-01 09:17) Dessena, Gabriele; Ignatev, Dmitrii; Whidborne, James; Pontillo, Alessandro; Zanotti Fragonara, Luca
    33rd Congress of the International Council of the Aeronautical Sciences (ICAS). Abstract: The advancements in the aeronautical industry and research on materials and manufacturing methods in the last 70 years have been shifting the paradigm of wing design to high aspect ratio flexible wings. These wings can show a varying behaviour in different operating conditions, as per the nature of their geometry and materials. This work proposes a case study of a high aspect ratio flexible wing in order to study the effect of operating conditions on its structural properties. To test different operating conditions on the ground, a revolving clamp is designed to attach the specimen to a clamp-on shaker. A clear relationship between the wing’s modal properties, and so structural properties, and the angle the clamp sets is found.
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    Skid Steering Tracked Vehicle Simulink Model
    (Cranfield University, 2021-08-12 16:27) Ignatev, Dmitrii; Strawa, Natalia
    A comprehensive mathematical model of a skid steering tracked vehicle, including track-terrain interaction, motion kinematics and dynamics, is provided. The model is also equipped with the control system for accurate following the desired trajectory. A compound identification scheme utilizing an exponential forgetting recursive least square, generalized Newton–Raphson (NR), and Unscented Kalman Filter methods is also added to estimate the model parameters, such as the vehicle mass and inertia, as well as parameters of the vehicle-terrain interaction, such as slip, resistance coefficients, cohesion, and shear deformation modulus on-line.