The PECyT cyclorotor introduces several potential advantages in comparison with traditional VTOL or fixed wing air vehicles. Since it uses common surfaces to achieve lift and thrust along the full range of flight speeds, and this can be helpful in eliminating wing drag at high speed. The use of a wing rotating around the axial axis creates lift, and thrust, when the blades move backward in relation to the vehicle┬┤s direction of flight. This makes possible to use the inter-
mittent, but very high, lift value generated by the unsteady pitching of the blades. Further, the rotational speed and pitch of the cyclorotor does not need to increase with vehicle speed, since the achievable thrust increases with forward airspeed for a constant rotor angular velocity.
Moreover, the cyclorotor lifting area is related to its VTOL efficiency, and that area is inferior than for helicopters and jet vectored thrust.

The possibilities opened by the development of
an air vehicle that is capable to attain high subsonic
velocities, and also capable of VTOL without the
need to make a radical reconfiguration of its
geometry are enormous:
- more convenient commercial transportation
- rapid disaster/rescue response
- flexible multi-mission military defense vehicles
- green friendly vehicles able to be powered by
renewable or photovoltaic electricity

To achieve these goals, it is proposed that an air vehicle incorporating the PECyT cyclorotor
concept must make use of unconventional aerodynamic and structural innovations, leading to
the creation of a revolutionary subsonic aircraft. It is considered adequate that a cyclorotor based air vehicle will make use of symmetrical blades with unlimited controllable pitch in relation to the airframe. This vehicle can make a smooth transition from lowspeed and vertical flight to high
speed forward flight by reducing the rotor angular velocity, so that the blades ....
rotational speeds
drop below the forward vehicle flight speed. Since thrust and lift can be maintained across all speeds, and the achievable thrust increases with increasing vehicle speed at a constant rotor angular velocity.

Upcoming event:
Aerodays 2015, 20-23 October 2015, London.
CROP post-project presentation by invitation of European Union
CROP-Project Newsletter Q1/2014

CROP-Project Newsletter Q2/2015