Vtol Pdf

Design methodology for hybrid (VTOL + Fixed Wing) unmanned aerial vehicles.

Design study for a high-speed, vertical take-off and landing aircraft

Testing was carried out to produce fundamental DiscRotor aerodynamics in hovering and fixed-wing flights. In order to evaluate the DiscRotor while hovering, small trials were carried out on a 3 foot disc without the existence of a hull. An â hovering deviceâ was designed that can rotate the pattern rotator at velocities up to 3,500 rev/min to achieve top velocities of 500 fps.

The thrust and momentum produced by the rotary models were obtained using a two-component weighcell and time-averaged results were obtained for different velocities and inclination angle. The DiscRotor has been shown to work well in hovering flight. The hovering effects were investigated by simulation of the floor with a moving fixed mural.

Distribution of pressures on the floor and disk surface was recorded. Speed measurement investigated the current stream upstream of the rotors by passing through a seven-hole speed sensor. It was found that a trace behind the wheel contracts due to a low-pressure area developing down the disk. Experiments were also carried out in the windtunnel to investigate the fixed-wing fly of the disk rotors.

On the basis of an early size survey carried out by our Boeing partner, a prototype of the body and a round blade was produced. Powers were directly sensed by a weighing system with six degrees of free motion or free flow balancing up to 200 fps. The low lift/return conditions were found to cause a high demand for the disc motor output during fixed-wing operation.

Speeds were recorded in a 2D lattice at right angles to the current on the simulation by passing through a seven-hole speed sensor. Hardness of the Shed-vortices from the models were computed. Consideration was given to a process to enhance the efficiency of the rigid blade by pulling two vanes out of the washer. A 0.17 rise in the CL was recorded due to the interactions between the disk and vanes.

The research used a broad spectrum of experimental techniques to generate fundamental fluid dynamics properties of the disk rotor. The results were taken into account in the first drafts of this airplane for the evaluation of the advantages of the DiscRotor-Konzept.