Glasair III aircraft re-define High Performance!!Glasair III
Fuselage Glasair Aviation, LLC is proud to offer you the sleek and exciting Glasair III. This aircraft has been designed for pilots who demand the highest performance, while expecting outstanding utility, strength, quality and proven reliability -- in short, the III is for those who demand the ultimate kitplane!
The well for the retractable nose wheel is supplied as a pre-molded composite part with high-density foam core inserts molded in for attachment of both the nose wheel doors and the rudder pedals on the inside of the cockpit.
Fire-retardant, closed cell polyurethane foam core is used in all areas of the III fuselage, including the firewall.
Wing
The Glasair III’s wing span and area are the same as those of the Super II -- 23', 3" and 81.3 sq. ft., respectively. However, the lower aft surface of the LS(1)-0413 airfoil has been modified in the aileron and flap area on the III to reduce induced drag, profile drag and trim drag. This change, coupled with the upswept Hoerner tips, provides light aileron forces even at higher speeds.
The III's wing features pre-molded main landing gear support boxes. These rigid, structural boxes eliminate the majority of the laminating and jigging work on the main landing gear installation and simplify the job considerably.
Control Surfaces
The Glasair III uses the same horizontal stabilizer airfoil section as the Super II. However, graphite fibers have been incorporated into the skin laminates of the III stabilizer and the span has been shortened compared to the Super II to obtain the higher degree of stiffness and torsional rigidity prescribed by our in-depth vibration testing and computer flutter analysis.
The Glasair III also features larger-diameter aluminum push-pull tubes for the aileron and elevator control systems than earlier models, providing increased column load capacity. Increased mechanical advantage is provided in the flap control system, which has been designed to reduce the effort required for flap actuation while maintaining a simple manual linkage. Electrically actuated flaps, both standard and slotted, are available as options.
Landing Gear
Durable oleo-pneumatic landing gear struts are used for all three wheels on the III. These are top quality, rugged and designed with low-maintenance features throughout. Internal fluid metering has been customized for the III’s weight to give smooth taxiing over rough ground, as well as proper damping for hard landings. The internal parts are designed so that specialized wrenches are not required for disassembly, and service can, if necessary, be accomplished by a novice with the detailed service instructions Glasair Aviation, LLC provides.
The landing gear is retracted by an electro-hydraulic pump driving actuating cylinders. The complete retraction cycle takes about ten seconds. The gear is controlled by a switch on the instrument panel and monitored with a panel-mounted hydraulic pressure gauge and three gear position lights. The lights indicate gear down and locked (green), gear in transit (red), and gear up and locked (lights out). Additionally, a warning horn is activated if the flaps are lowered prior to gear extension.
Cowling
The Glasair III cowling has been optimized to provide outstanding engine cooling with minimal aerodynamic drag. The protruding exhaust tunnel common on other models has been eliminated on the III in favor of twin exhaust stacks that protrude only slightly beyond the cowling. This change greatly reduces drag by allowing for a sleek, uninterrupted belly contour from spinner tip to tail. Engine
The Glasair III uses a certified Lycoming aircraft engine. With such exciting cross-country capabilities, having a proven, reliable engine is a must.
The Glasair III is designed to use the most readily available 300 hp Lycoming engine, the IO-540-K series. The engine installed in our prototype III is a smooth-operating -K1H5. This engine has the fuel injector mounted on a straight air inlet housing on the aft side of the engine oil sump. It is equipped with a Bendix RSA-10ED1 fuel injector, a diaphragm-type fuel pump and drive, and two impulse coupling magnetos. Propeller
The 80"-diameter Hartzell two-bladed, compact-hub constant-speed propeller can be used on the Glasair III. After extensive testing, two-bladed props were selected over three-bladed models due to their efficiency, lighter weight and lower cost. The landing gear legs are sized to give a healthy 10" of ground clearance with either of these props.
The prop is not included in the kit, but a complete spinner installation is standard. The composite spinner is manufactured to perfectly match the loft lines of the cowling. Hartzell and McCauley propellers are available, factory-new, at OEM prices direct from Glasair Aviation, LLC.
Information and pictures are used with permission from Glasair Aviation. Any unauthorized reproduction of text and pictures, without the consent of Glasair Aviation, is strictly prohibited.
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