Propellers
Eagle Aviation proudly uses the Prince P-TIP Carbon Fiber propeller for the EA-100 S-LSA
The Prince P-TIP is one of the most advanced fixed bladed
propeller available. It is efficient, quiet, durable and virtually maintenance
free which naturally is why it is used for the EA-100. Only the best for the
best!
Read on to learn more about this amazing propeller.
The P-TIP design. The droop P-TIP controls air spillage over the
propeller tip. It delays the tip vortices which cause drag and turbulence within
the propeller arc. A propeller, like air over a wing, works best when it has
unturbulated air over the airfoil sections. The P-TIP delays the vortices so the
propeller then has smooth air to provide the best thrust available and
pronounced reduction in propeller noise.
An additional benefit of the P-TIP design is the air volume of air the propeller
produces. When the air flows through a standard propeller, the airflow will
‘roll’ over the propeller tip. As soon as it passes the tip it will tuck down
behind the propeller blade giving a cone of air from the propeller smaller than
the propeller diameter. For example, a 72” diameter propeller without the P-TIP
will give the same volume of air from a 68” diameter P-TIP propeller. By
reducing the propeller diameter there is less frontal area or flat plate drag on
the aircraft. Higher top speeds are the result without sacrificing takeoff or
climb.
Pitch change and the Scimitar shape.
The propeller has a fixed pitch that relies on the forward pull of the propeller
to automatically provide pitch change proportional to the amount of force being
applied to the propeller. When a propeller operated at a slower airspeed than
it’s maximum capability, it has a proportional pull in relation to the velocity
of forward motion, so at takeoff and climb, the propeller will lessen pitch that
provides shorter takeoffs and higher rates of climb. As the propeller increases
in forward speed the disk
pressure
is reduced which forces the propeller to increase pitch and top speed. This
change in pitch is approximately four inches from takeoff to cruise.
The P-TIP propeller uses a time proven wood core of hard maple and then
completely enclosed in layers of Carbon Fiber. The hardwood care absorbs any
dangerous harmonic vibrations and benefits the airframe by smoothing any power
pulses.
The best working propeller is one that is rigid enough to allow the blades to
move alike, thin at all cord sections to eliminate as much drag as possible and
strong enough to satisfy the large amounts of stress required during flight. The
P-TIP propeller has proven very effective in performance gains as the Carbon
Fiber provides the very best in performance.
Multiple layers of Hard Rock Maple are used throughout construction. All
propeller blanks are constructed to insure quality. Urea Formaldehyde adhesive
meeting strict military standards is used to insure reliable and trouble free
operation for the life of the propeller. The propeller is finished to a high
gloss finish which will compliment the EA-100.