Bramwell's Helicopter Dynamics

By A. Bramwell, G. Done, D. Balmford. 2001

362 citations recorded by the source corpus.

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Sigma-point kalman filters for probabilistic inference in dynamic state-space models (2004, methodology): “The X-Cell 90 has a hingeless main rotor that is equipped with a Bell-Hiller stabilizer bar [24], which provides lagged rate feedback and augments the servo torque with an aerodynamic moment used to change the cyclic pitch of the blades.”
Aerodynamics and Control of Quadrotors (2017, methodology): “3 and any standard helicopter reference such as Bramwell et al. [2001] for such rotor blades, it is easy to observe that the blades used have significant tip and root cutouts.”
Multi-agent quadrotor testbed control design: integral sliding mode vs. reinforcement learning (2005, background): “Similar aerodynamic phenomenon for helicopters have been studied extensively [8], but not for the quadrotor, due to its relative obscurity and complexity.”
Thrust Control for Multirotor Aerial Vehicles (2017, methodology): “The 50 Hz limitation in the communication between the flight control board and electronic speed controllers (ESC) typical in quadrotor systems limit the performance of such an approach.”