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PRINCE AIRCRAFT COMPANY
P-TIP PROPS

Prince P-tip props are the only wood / composite anti-vortex droop tipped propeller in the world. This propeller is a wood, fixed pitch propeller 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 disk. When a propeller operates at a slower airspeed than its maximum capabilities, it has a proportional pull in relation to the velocity of forward motion. At takeoff and climbing condition the propeller has its largest forward pull, due to the scimitar shape. The tip of the propeller cones forward, as the coning angle changes the propeller will lessen pitch providing shorter takeoffs and higher rates of climb. As the propeller increases in forward speed the disk pressure is reduced, forcing the propeller to increase pitch and top speed. This change in pitch is approximately 4 from takeoff to cruise. The droop P-TIP delays the vortices. The propeller then has smooth air to provide better thrust and a pronounced reduction in propeller noise. Additional benefit of the P-TIP design is the volume of air the propeller produces. When air flows through a standard tip propeller design the airflow at the tip will flow 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. A 68 P-TIP will give the same volume of air as a standard tip 72 propeller. By reducing propeller diameter there is less frontal area or flat plate drag of the aircraft, higher top speeds are the result without sacrificing takeoff or climb.
Note: Request Prince Propeller order form at time of order we will fax or mail form to you to complete to insure correct propeller is furnished for you application.
WOOD P-TIP PROPELLER

Before the "Carbon Fiber P-TIP Propeller", this had been considered one of the most efficient and lowest noise propellers available; the only wood/carbon fiber anti-vortex droop tipped propeller in the world. This propeller is a wood, fixed pitch propeller 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 disk. When a propeller operates at a slower airspeed than its maximum capabilities, it has a proportional pull in relation to the velocity of forward motion, so at takeoff and climbing condition the propeller will have its largest forward pull. Due to the scimitar shape, the tip of the propeller cones forward, as the coning angle changes 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, this forces the propeller to increase pitch and top speed. This change in pitch is approximately four inches from takeoff to cruise. The droop P-TIP is to control the air spillage over the propeller tip that delays the tip vorticies which cause drag and turbulence within the propeller arc. A propeller, like a wing, works best when it has unturbulated air over the airfoil sections. The P-TIP delays the vorticies, the propeller then has smooth air to provide best thrust and a pronounced reduction in propeller noise.

Additional benefit of the P-TIP design is the volume of air the propeller produces. When air flows through a standard tip propeller design, the airflow at the tip will flow 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 a P-TIP will give a volume of air from the propeller of approximately 68" of diameter; a P-TIP propeller will provide 72" of air volume. This means that a 68" P-TIP will give the same volume of air as a standard tip 72" propeller. By reducing propeller diameter there is less frontal area or flat plate drag of the aircraft. Higher top speeds are the result without sacrificing takeoff or climb.

Your benefit is a lightweight, pitch changing propeller that will give you the best of short takeoff, maximum cruise, and more flying enjoyment in a quieter cockpit.

COMPOSITE P-TIP PROPELLER
Composite P-Tip Props retain the same qualities of the wood P-TIP but are more efficient and durable. Prince uses the reliable time proven wood core of hard maple, then completely encloses the blades in multiple layers of high tensile strength composites. The hardwood core absorbs the dangerous harmonic vibrations and benefits your airframe by smoothing the engine power pulses, and the composite wrapping allows the airfoils sections to be thinner, reducing drag while increasing durability and locks each blade into operating at precise angles. The best working propeller is one that is rigid enough to allow all blades to move alike, thin at the cord section to eliminate as much drag as possible, and strong enough to satisfy the large amounts of stress required during flight. Urea Formaldehyde adhesive meets Military Specifications to insure reliable operation and trouble free flying for the life of the propeller. Propellers are finished in a metal prop gray color, this shade will match nearly every paint scheme, the Durability and Ultrahigh Gloss finish is a
two-part Urethane, machine buffed to achieve a propeller that reflects the quality of manufacturing like no other propeller available.
APPLICATION CHART
Aircraft
Engine
HP
Dia./Pitch
Hub Thickness
Price Schedule
Acro Sport
0-320
150
71/48
3.7
F
Avid Flyer
Rotax 503 52 68/34 2.1 B
Rotax 532
64
71/35
2.1
B
Baby Great Lakes
C-80A
80
66/48
3.25
F
Cozy
0-320 150 68/72 3.7 F
0-320 160 68/74 3.7 F
0-360
180
68/76
3.7
F
Dragonfly
1834VW 60 52/45 2.75 D
2100VW
82
52/48
2.75
D
Glasair
0-320
150
68/72
3.7
F
0-320 160 68/74 3.7 F
0-360 180 68/76 3.7 F
0-540 270 69/113 3.7 F
Glass Goose
0-320 150 64/62 3.7 E
0-320
160
64/64
3.7
E
Kitfox
Rotax 503 46 68/30 2.1 B
Rotax 912
80
68/47
2.25
B
KR-2
1835 VW 55 52/48 2.75 D
2100 VW 80 52/50 2.75 D
Subaru
75
53/68
3.7
D
Lancair
0-200
100
58/68
3.7
E
0-235 118 58/68 3.7 E
0-290 140 60-72 3.7 E
0-320 150 62/72 3.7 E
0-320 160 62/74 3.7 E
0-360 180 68/76 3.7 F
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