Implementation and Experimental Validation of a Dynamic Model of a 10 MW Nacelle Test Bench Load Application System

Hybrid Unmanned Aerial Vehicles (H-UAVs) are currently a very interesting field of research in the modern scientific community due to their ability to perform Vertical Take-Off and Landing (VTOL) and Conventional Take-Off and Landing (CTOL). This paper focuses on the Dual Tilt-wing UAV, a vehicle capable of performing both flight modes (VTOL and CTOL). The UAV complete dynamic model is obtained using the Newton–Euler formulation, which includes aerodynamic effects, as the drag and lift forces of the wings, which are a function of airstream generated by the rotors, the cruise speed, tilt-wing angle and angle of attack. The airstream velocity generated by the rotors is studied in a test bench. The projected area on the UAV wing that is affected by the airstream generated by the rotors is specified and 3D aerodynamic analysis is performed for this region. In addition, aerodynamic coefficients of the UAV in VTOL mode are calculated by using Computational Fluid Dynamics method (CFD) and are embedded into the nonlinear dynamic model. To validate the complete dynamic model, PD controllers are adopted for altitude and attitude control of the vehicle in VTOL mode, the controllers are simulated and implemented in the vehicle for indoor and outdoor flight experiments.

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Experimental Validation of Quadrotors Angular Stability in a Gyroscopic Test Bench

2018 22nd International Conference on System Theory, Control and Computing (ICSTCC) ◽

10.1109/icstcc.2018.8540660 ◽

2018 ◽

Cited By ~ 3

Author(s):

M. F. Santos ◽

M. F. Silva ◽

V. F. Vidal ◽

L. M. Honorio ◽

V. L. M. Lopes ◽

...

Keyword(s):

Experimental Validation ◽

Test Bench ◽

Angular Stability

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Experimental validation of a PEM fuel cell dynamic model

International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006. ◽

10.1109/speedam.2006.1649832 ◽

2006 ◽

Cited By ~ 5

Author(s):

G. Bucci ◽

F. Ciancetta ◽

E. Fiorucci ◽

E. Rotondale ◽

F. Veglio

Keyword(s):

Fuel Cell ◽

Dynamic Model ◽

Experimental Validation ◽

Pem Fuel Cell

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A New Load Application System for In Vitro Study of Ligamentous Injuries to the Human Knee Joint

Journal of Biomechanical Engineering ◽

10.1115/1.2794195 ◽

1995 ◽

Vol 117 (4) ◽

pp. 373-382 ◽

Cited By ~ 49

Author(s):

J. M. Bach ◽

M. L. Hull

Keyword(s):

Knee Joint ◽

Degree Of Freedom ◽

Load Application ◽

Accuracy Evaluation ◽

Application System ◽

Human Knee ◽

Human Knee Joint ◽

Flexion Extension ◽

External Loads

This paper describes the design and accuracy evaluation of a new six degree of freedom load application system for in vitro testing of the human knee joint. External loads of both polarity in all six degrees of freedom can be applied either individually or in any combination while the knee is permitted to move unconstrained in response to applied loads. The flexion/extension degree of freedom permits the full physiological range of motion. In addition to external loads, forces of the three major muscle groups (quadriceps, hamstrings, gastrocnemius) crossing the joint can be developed. Full automation and rapid convergence of loads to programmed values are achieved through a computer which feeds command signals to servo controller/electro-pneumatic servo valves. The servo valves regulate pressure to pneumatic actuators which develop the various loads. Experiments undertaken to quantify the accuracy of both load and displacement measurements reveal that errors particularly in load measurement are effectively controlled through the apparatus design.

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A New Load Application System for In Vitro Study of Ligamentous Injuries to the Human Knee Joint

Skiing Trauma and Safety: Tenth Volume ◽

10.1520/stp37933s ◽

2009 ◽

pp. 232-232-12

Author(s):

JM Bach ◽

ML Hull

Keyword(s):

Knee Joint ◽

In Vitro Study ◽

Vitro Study ◽

Load Application ◽

Application System ◽

Human Knee ◽

Human Knee Joint

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Adaptation of a Knee Joint Testing System to Testing of the Spine

ASME 2008 Summer Bioengineering Conference, Parts A and B ◽

10.1115/sbc2008-193170 ◽

2008 ◽

Author(s):

Joel M. Bach ◽

Todd H. Baldini

Keyword(s):

Knee Joint ◽

First Generation ◽

Original System ◽

University Of California ◽

Load Application ◽

Testing System ◽

Application System ◽

The University ◽

Knee Load

The first generation of the knee load application system was developed at the University of California, Davis under the direction of Professor Maury Hull. This apparatus has been described in several abstracts and was published in 1995 [1]. This original system continues to be used by Dr. Hull and associates.

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Numerical Simulation and Experimental Validation of an Oil Free Scroll Compressor

Energies ◽

10.3390/en13225863 ◽

2020 ◽

Vol 13 (22) ◽

pp. 5863

Author(s):

Massimo Cardone ◽

Bonaventura Gargiulo

Keyword(s):

Experimental Data ◽

Experimental Validation ◽

Test Bench ◽

Outlet Temperature ◽

Analysis Software ◽

Scroll Compressor ◽

One Dimensional ◽

Geometrical Features ◽

The One ◽

Semi Empirical

This paper presents a virtual model of a scroll compressor developed on the one-dimensional analysis software Simcenter Amesim®. The model is semi-empirical: it needs some physical details of the modelled machine (e.g., the cubic capacity), but, on the other hand, it does not require the geometrical features of the spirals, so it needs experimental data to calibrate it. The model also requires rotational speed and the outlet temperature as boundary conditions. The model predicts the power consumption and the mass flow rate and considers leakages and mechanical losses. After the model presentation, this paper describes the test bench and the obtained data used to calibrate and validate the model. At last, the calibration process is described, and the results are discussed. The calculated values fit the experimental data also in extrapolation, despite the model is simple and performs calculations within 7 s. Due to these characteristics, the model is suitable for being used in a larger model as a sub-component.

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