The MiniHawk-VTOL: Design, Modeling, and Experiments of a Rapidly-prototyped Tiltrotor UAV

Carlson, Stephen; Papachristos, Christos

doi:10.1109/icuas51884.2021.9476731

Cited by 14 publications

(3 citation statements)

References 23 publications

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“…Note that the initial propeller force is not zero because the motors are spinning with the aircraft armed. As the aircraft gains altitude and is further from the ground, the amount of ground effect force is reduced, reaching a point where the effect is negligible, as predicted from Equation (10). During landing, the aircraft descends so quickly that there is no visible difference in the captured graphs.…”

Section: Resultsmentioning

confidence: 91%

“…However, the complexity of having to derive the whole flight dynamics often incurs oversimplifications such as only considering frontwind aerodynamics [8], or very basic PID flight controllers [9]. Some more recent works relegate the calculation of the aircraft dynamics to a flight simulator such as RealFlight [10] or X-Plane [11,12]. Other robotics simulators such as Gazebo have also been employed for UAV simulation [13].…”

Section: Related Workmentioning

confidence: 99%

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HIL Flight Simulator for VTOL-UAV Pilot Training Using X-Plane

et al. 2022

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With the increasing popularity of vertical take-off and landing unmanned aerial vehicles (VTOL UAVs), a new problem arises: pilot training. Most conventional pilot training simulators are designed for full-scale aircrafts, while most UAV simulators are just focused on conceptual testing and design validation. The X-Plane flight simulator was extended to include new functionalities such as complex wind dynamics, ground effect, and accurate real-time weather. A commercial HIL flight controller was coupled with a VTOL convertiplane UAV model to provide realistic flight control. A real flight case scenario was tested in simulation to show the importance of including an accurate wind model. The result is a complete simulation environment that has been successfully deployed for pilot training of the Marvin aircraft manufactured by FuVeX.

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Section: Resultsmentioning

confidence: 91%

Section: Related Workmentioning

confidence: 99%

HIL Flight Simulator for VTOL-UAV Pilot Training Using X-Plane

et al. 2022

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“…The UX-7V VTOL UAV control system is being developed using a model-based design approach [34] [35]. Building a mathematical flight model is mandatory to facilitate aircraft attitude and motion studies [36][37][38][39][40]. Each flight model has its characteristics called model parameters [41].…”

Section: Introductionmentioning

confidence: 99%

Validation of Quad Tail-sitter VTOL UAV Model in Fixed Wing Mode

Priyambodo

Majid²,

Shouran³

2023

Journal of Robotics and Control

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Vertical take-off and landing (VTOL) is a type of unmanned aerial vehicle (UAV) that is growing rapidly because its ability to take off and land anywhere in tight spaces. One type of VTOL UAV, the tail-sitter, has the best efficiency. However, besides the efficiency offered, some challenges must still be overcome, including the complexity of combining the ability to hover like a helicopter and fly horizontally like a fixed-wing aircraft. This research has two contributions: in the form of how the analytical model is generated and the tools used (specifically for the small VTOL quad tail-sitter UAV) and how to utilize off-the-shelf components for UAV empirical modeling. This research focuses on increasing the speed and accuracy of the UAV VTOL control design in fixed-wing mode. The first step is to carry out analysis and simulation. The model is analytically obtained using OpenVSP in longitudinal and lateral modes. The next step is to realize this analytical model for both the aircraft and the controls. The third step is to measure the flight characteristics of the aircraft. Based on the data recorded during flights, an empirical model is made using system identification technique. The final step is to vali-date the analytical model with the empirical model. The results show that the characteristics of the analytical mode fulfill the specified requirements and are close to the empirical model. Thus, it can be concluded that the analytical model can be implemented directly, and consequently, the VTOL UAV design and development process has been shortened.

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Double Hybrid Tailsitter Unmanned Aerial Vehicle With Vertical Takeoff and Landing

2022

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We propose a new concept and architectural design for a double hybrid tailsitter unmanned aerial vehicle with vertical takeoff and landing capability. Basically, it consists of a modified flying wing with a single combustion powertrain set and a multirotor with 2 powertrain sets with electric motors. To this end, we have designed, built, and tested a prototype that spends less energy on vertical taking off and landing and also on horizontal flight, for maximizing flight endurance and distance. With electric propellers fixed at the leading wing edge, the tailsitter has two standard surfaces for elevation control and two vertical stabilizers that are used to give the necessary direction on vertical takeoff and landing. Experiments and results show the versatility of our hybrid tailsitter for operations in a restricted field. We performed several tests starting with the aircraft on the ground in vertical positioning. These tests include executing vertical takeoffs and landing, transitions from vertical to horizontal flight modes and transitions back from horizontal to vertical flight modes, and hovering, which were carried out successfully. Transition fourth and back from combustion to multirotor modes are inherent to some of those flight mode transitions, which have been performed smoothly. We also performed tests (in bench) to estimate the flight endurance. Final autonomous flight adjustments were not performed due to the Covid-19 pandemic caused by SARS-CoV-2. To this end the proposed and currently built prototype has proven to be functional as an effective hybrid UAV system.

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The MiniHawk-VTOL: Design, Modeling, and Experiments of a Rapidly-prototyped Tiltrotor UAV

Cited by 14 publications

References 23 publications

HIL Flight Simulator for VTOL-UAV Pilot Training Using X-Plane

HIL Flight Simulator for VTOL-UAV Pilot Training Using X-Plane

Validation of Quad Tail-sitter VTOL UAV Model in Fixed Wing Mode

Double Hybrid Tailsitter Unmanned Aerial Vehicle With Vertical Takeoff and Landing

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