AP421CTF-WWR66U

Airmaster Propeller System

The AP421CTF-WWR66U is a two blade propeller for use on small direct drive engines. Its configuration is clockwise/tractor with the addition of a feathering facility.

The performance gain from the AP4x constant speed hub, combined with the outstanding design of the Whirlwind U series blade, allows this propeller to perform over a very wide range of speeds. As such it is an extremely popular model, finding application on a wide range of aircraft.

Features include

Designed for small direct drive engines (like UL260iS)
High strength AP421 CS hub with steel retention components
Fast response from high precision Maxon servo drive
Wide operating speed range from Whirlwind U series profile blades
Hard wearing composite blade construction with inlaid Nickel leading edge protection
Easy to use AC200F electronic governor/controller
Easy installation with a wide range of pre-made installation kits

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Specification
Features

Precision Hub Mechanism At the heart of each Airmaster propeller is a high quality hub mechanism. The single piece hub shell and steel retention parts ensure the hub is lightweight and strong. The high quality aerospace materials used throught the hub ensure a long life with superior fatigue resistance. High strength single piece shell Precision pitch change mechanism Durable steel retention components Fast and reliable electric PC motor
	Simple Operation The Airmaster propeller is extremely simple to operate thanks to the AC200 control system. The automatic management of the engine rpm is essential in reducing pilot worklaod during the critical phases of flight like landing and taking off. Easy selection of engine speeds for Take Off, Climb and Cruise Flexible speed selection using Hold function Precise speed regulation from solid state governor Clear pilot feedback of propeller operation Semi automatic 'Feather' function
High Aerodynamic Performance Airmaster Propellers offer exceptional performance and durability with a wide range of blade options. The high temperature cure prepreg carbon technology ensures an exceptionally stiff, lightweight blade. This increased strength allows thinner sections and more complex shapes to be formed resulting in highier efficiencies, over a wider speed range. The WWR66U blade from Whirlwind (USA) offers many features useful to modern Rotax powerered aircraft. Modern aerodyanmic design ensuring high cruise speeds Large 66in diameter for improved low speed thrust Strong and lightweight hollow carbon construction High gloss natural carbon finish with white tips gives good looks and long life Tapered blade tip giving quiet and efficient operation Fully shaped nickel leading edge protecting the leading edge
	Easy installation The installation of the propeller is very straight forward and is designed to be accomplished in a short time by any competent layperson. Included is a very comprehensive operators manual and propeller log book. The propeller comes pre-lubricated and statically balanced with all the necessary hardware supplied. Pre-lubricated Pre-balanced Pre- finished wiring Detailed manual Assembly boms

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Specifications

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Products specifications

Engine	UL 260iS
Hub	AP421
Engine	D-Motor L-26
Maximum Speed	3000rpm
Blade Make	Whirlwind
Diameter	66in (1676mm)
Mounting Flange	Rotax 4in (101.6mm) PCD

Products specifications

Engine	UL 260iS
Hub	AP421
Engine	D-Motor L-26
Maximum Speed	3000rpm
Blade Make	Whirlwind
Diameter	66in (1676mm)
Mounting Flange	Rotax 4in (101.6mm) PCD

Product tags

whirlwind (39)
,
AP332 (44)
,
R66U (1)
,
UL (6)

Power Capacity	DD 4cyl	100hp (75kW)
	DD 6cyl	120hp (89.5kW)
Maximum Speed	3000rpm
Weight	AP421-WWR66U	22lbs (10kg)
Moment of Inertia	~0.45kgm^2
Mounting Flange	AP421	Rotax 4in
	AP423	SAE-1
Engine Type	UL260iS
Hub Type	AP421
Configuration	Clockwise, Tractor
Blade Type	Whirlwind	R66U
Extension	as required
Spinner	8.3, 9.0, 9.5, 10.3, 11.2, 12.2, 13in
Available Controllers	AC200F, AC200R
Slipring	UL standard , UL SAE-1
Loom Length	Loom Extension	59in (1.5m) -335in (8.5m)
	Brushblock	20in (0.5m)

AP421CTF-WWR66U

AP421CTF-WWR66U

Airmaster Propeller System

Features include

UL Power 260iS

UL Power Engine

AH-421

Constant Speed Hub

B-WWR66U

Blade

AC-200F

Airmaster Electronic Governor

UL Power 260iS

UL Power Engine

AH-421

Constant Speed Hub

B-WWR66U

Blade

AC-200F

Airmaster Electronic Governor

UL Power 260iS

UL Power Engine

AH-421

Constant Speed Hub

B-WWR66U

Blade

AC-200F

Airmaster Electronic Governor