Coanda
disk Aircraft.

Coanda
disk aircraft dictionary of special symbols.

** Uy** Vertical,
Y axis component of air velocity.

** u_{y1}** Mean
air velocity determined over the area of a disk.

** a** and

** P_{D}** Dynamic
pressure.

** r** Air
density.

** S_{D}** Area of
a disk of radius

** F_{L1}** A component
of negative lift.

** u_{y2}** Mean
air velocity determined over the area of an annulus.

** S_{A} **Area of an annulus of minor and major radii

** F_{L2}** A component
of positive lift.

** P_{I}** Induced power of primary air
source.

** S_{S}** Cross section area of the
annular slot, (primary air source).

** U_{S}** Air velocity dispensed from the slot.

*u _{yn}*

** P_{1} **Power to sustain lift
element

** P_{2}** Power to sustain lift element

** P_{L}** Power
dissipated through other means other than sustaining lift.

**Special terms used;**

CFD Computational fluid dynamic, a computational facility for the partial solution of Navier Stokes equations.

CV Controlled volume, an experimental enclosure.

Meshing A CFD technique employed to solve iterative differential equations.

Model A CFD representation of the object around which airflow is to be analysed.

Enclosing volume. A CFD technique establishing spatial limits to the computation.

Closing surface A CFD technique to enable boundary conditions to be set.

Results plane A CFD technique to enable the visualisation of analysis results.

.sat A file format commonly used in the transfer of files between computational systems.

Induced power The power produced by the primary air flow source.