Results 31 to 40 of about 80 (54)
Some of the next articles are maybe not open access.
Design and Joint Control of a Conjoined Biplane and Quadrotor
Unmanned Systems, 2023Unmanned Aerial Vehicles (UAVs) have the potential to perform many different missions, some of which may require a large aircraft for endurance and a small aircraft for maneuverability in wind gusts or cluttered environments such as buildings. This paper proposes a novel combination of a quadrotor and a hybrid biplane capable of joint hover, joint ...
S. Schröter +2 more
openaire +3 more sources
Proceedings of the Vertical Flight Society 79th Annual Forum and Technology Display, 2023
Jean-Paul Reddinger +4 more
exaly +2 more sources
Jean-Paul Reddinger +4 more
exaly +2 more sources
Proceedings of the Vertical Flight Society 77th Annual Forum and Technology Display, 2021
Jean Reddinger +3 more
exaly +2 more sources
Jean Reddinger +3 more
exaly +2 more sources
Iterative Learning based feedforward control for Transition of a Biplane-Quadrotor Tailsitter UAS
2020 IEEE International Conference on Robotics and Automation (ICRA), 2020This paper provides a real time on-board algorithm for a biplane-quadrotor to iteratively learn a forward transition maneuver via repeated flight trials. The maneuver is controlled by regulating the pitch angle and propeller thrust according to feedforward control laws that are parameterized by polynomials.
Nidhish Raj +4 more
openaire +1 more source
Transition Trajectory Planning and Control for Quadrotor Biplanes in Obstacle Cluttered Environments
Proceedings of the Vertical Flight Society 78th Annual Forum and Technology Display, 2022This paper presents a trajectory planner and a control architecture capable of guiding a quadrotor biplane tailsitter (QRBP) through obstacle cluttered environments. The trajectory planner is formulated as an optimization problem that uses a differentially flat, point-mass model of a QRBP that considers wake effects on the aerodynamic forces generated ...
Kristoff McIntosh +3 more
openaire +1 more source
Aerodynamic and Aeroacoustic Analysis of a Quadrotor Biplane Tailsitter
Journal of the American Helicopter SocietyUnmanned aerial systems with vertical take-off and landing capability have seen rapid development with the advent of advanced air mobility. However, their high noise footprint remains a major obstacle to commercial deployment. This study investigates the aerodynamic mechanisms driving noise generation in such systems, focusing on a quadrotor biplane ...
Dilhara Jayasundara, James Baeder
openaire +1 more source
Flight Dynamics and Control of a Transitioning Quadrotor Biplane Tailsitter
Journal of the American Helicopter SocietyThis article presents an in-depth flight dynamics analysis of a quadrotor biplane tailsitter and proposes novel dynamic inversion (DI) flight control laws for autonomous hover-to-cruise transition. As the basis for the synthesis and demonstration of such control laws, a flight dynamics model is developed that also accounts for rotor dynamics and rotor-
Umberto Saetti +2 more
openaire +1 more source
Sizing Tool for Quadrotor Biplane Tailsitter UAS
2017The Quadrotor-Biplane-Tailsitter (QBT) configuration is the basis for a mechanically simplistic rotorcraft capable of both long-range, high-speed cruise as well as hovering flight. This work presents the development and validation of a set of preliminary design tools built specifically for this aircraft to enable its further development, including: a ...
openaire +2 more sources
A Switching-Free Control Architecture for Transition Maneuvers of a Quadrotor Biplane Tailsitter
2022 American Control Conference (ACC), 2022Kristoff McIntosh +2 more
openaire +1 more source