Coaxial rotor aeroelasticity is complex due to the counter-rotating wake system, rotor lift
offset, periodic blade passage loads, unsteady rotor wake interactions, reduced rotor speed …

An electrically controlled rotor (ECR), also known as a swashplateless rotor, employs a
trailing edge flap (TEF) system for primary rotor control instead of a swashplate …

Rotors with active flap control have considerable potential in reducing vibration and noise
and improving aerodynamic performance. However, due to the movement of the flap, there …

Coaxial rotor helicopters are a candidate for the next generation of rotorcraft due to their
ability to achieve high speeds without compromising hover performance. Coaxial rotors are …

An electrically controlled rotor (ECR), also known as a swashplateless rotor, eliminates the
swashplate system to implement the primary control via the trailing-edge flaps (TEFs), which …

A modular procedure is presented to simulate moving control surfaces within an overset grid
environment using the Navier–Stokes equations. Gaps are modeled by locally shearing the …

A suite of computational tools capable of predicting in-plane low-frequency rotorcraft noise
and its control using blade-tip geometry modifications is developed. The combined code …

Active Gurney flaps, or microflaps, are studied to determine their effectiveness in reducing
noise and vibration in rotorcraft as well as improving rotor performance. The effectiveness of …

The exponential growth of the aviation sector combined with environmental and energy
supply challenges have led companies to innovate to reduce aircraft fuel consumption …

The effectiveness of on-blade control for vibration and noise alleviation in rotorcraft is
examined in detail. The on-blade control is implemented by two sliding microflap …