Terms Associated With Airfoils
Fight equilibrium is straight and level flight.
Stability is being able to return to flight equilibrium after outside force action on the aircraft such as air
turbulance.
Lift is the rise to the airfoil.
Redirected lift factor is a term which can be both simple and complicated in relation to its use. Simple movement
of the flight controls can redirect the lift factor to the airfoil. In highly critical aircraft designs redirected lift factor can
be a term used to discuss such things as an airplane flying backwards and a winged spacecraft going into orbit.
Rearward component of lift sometimes relates to the position of high pressure area against the wing when its going
through its operation.
Thrust is usually considered in basic aircraft terms that pushes or pulls the aircraft through the air.
Drag's basic character in avation manner relates to the resistance that the structure has as it flies through
the air.
Parasitic drag comes from structures such as landing gear that's down, radio attennas...
Induced drag is drag induced from different movements using the flight controls.
Vortex and vortices are terms related to the characteristics of developed sections of air that change and don't
change as the aircraft flies through the sky at varying degrees of flight operation.
Downwash is both a simple and complicated term. The use of this term basically relates to the angle of attack
and the style of airfoil as it goes through its geometric plane of operation in flight.
Chord line is an imaginary line drawn through the center of the airfoil from a leading edge to the trailing edge.
Critical angle is a angle at which a stall ususally occurs at particular degree station of its geometric position.
Angle of attack is a word that usually relates to the position of the airfoil as it's controlled through the flight
control system when it flyies through the air. However, critical angle and angle of attack can be built into the aircraft
when it is manufactured or configured without movement of the flight control systems.
Spanwise flow is usually the movement of the air from the center of the airplane down the wing.
Relative wind is stationary air that envelops the airfoil that doesn't move as the airfoil travels through its
environment.
Reynold's numbers are airfoil number formula components created to describe windtunnel models as its relates o
full size aircraft.
Airfoil numbers are used by the Civil Aviation Administration, The Federal Aviation Administration and NASA to
catagorize and number different styles and airfoil designs.
Wing loading is a structural engineering term that usually described in factors. A component in understanding
wing loading would be the weight of the aircraft as it goes through a particular flight operation such as tight turns and
aerobatics with a full fuel load.
Compressability is usually a term related to just before or just after an aircraft or airfoil goes faster than
the speed of sound. Compressability can make flight controls disfuntional if not properly balanced or designed for that operation
of flight.
The first thing to think about in Tinkerbells giant spaceship design that flys backward into
orbit is that in a strong headwind airplanes can actually fly backwards and the issue of large size comes into the aspect
of propeller compressability over the fuselage and wings.Propeller blade bite and blade twist all repond to the numbers of
propeller RPM and engine RPM and torque and the work that the propeller design can do in moving the aircraft down the
runway and into the air.
The design of the BF and ME-109 the wings are of an old 1930's design simple and large to be
able to generate high pressure areas under the wing at relativley low speeds.Fighter planes of the 1940's used
laminar flow wings which were thinner in their shape and consequently used and had higher takeoff speeds.Tinkerbell thought
the old big wing off of the WW2 german fighterplane was a plus in understanding that the BF-and ME-109 were relatively smaller
fighters compared to others, many of them allied.
Just in case as the giant hostest with the mostest as Me's were sometimes called
Tinkerbell added pulse jets on top of the wing to boost its take off capacity with large amounts of fuel and propellants on
bored.
This facter and the factor that Christafer Robin and Udets platform use a circle
wing around the fuselage and fly backward give the Hexagon's giant airplane-spaceship idea its unique design operation.
