Avia Constant Speed Automatic Propeller, Certified for Cessna C-172 Aircraft For Sale
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Avia Constant Speed Automatic Propeller, Certified for Cessna C-172 Aircraft :
Avia Constant Speed Automatic Propeller, Certified for Cessna C-172 Aircraft . Condition is Used. Shipped with all original components and packaging.
Used for 100 hours of operation on an experimental aircraft.
V 503AP AIRCRAFT PROPELLER
Basic technical data
Number of blades:2Propeller diameter:max. 75 in. (1905 mm)Propeller type:tractorDirection of rotation:clockwise (viewed from behind of the aircraft)Type of operation:Automatic, autonomousBlade-pitch change operation:Automatic, hydraulicMaximum horsepower rating:160 SHP (119 kW)Maximum rotation speed:2700 RPMDry, rotating prop weight:70,1 lb (31,8 kg)Engine (HP)General aviation with Lycoming engine Q- 320Aircraft:Cessna C-172TBO:1000 hrsCertification bases:FAR 35Type certificates:CZ 98-08, USA-P18BO
Description of the operation
This propeller is anautomatic, self-containedpropeller. For change of the propeller blade angle of setting neither control forces derived from the aircraft engine nor any other control actions from the aircraft pilot are required. However, all control forces are derived from the air flow, the propeller being air-sensitive. The torque resulting from the aerodynamical forces acting on the wind mill is converted with the aid of a gear pump into pressure energy of the oil by means of which the propeller blades can be forced into a high-pitch position. It is the resulting torque of the propeller blades by means of which the blades can be turned to a low-pitch position. Regulation of pressure oil within the servo-mechanism is secured by means of a slide valve, this being controlled by the wind mill. The control energy of the wind mill is dependent on the air mass ram pressure, the value of which is propotional to the speed of flight. The V 503AP propeller is therefore a fully automatic and self-contained propeller, provided with open regulating circuit operating as an airspeed-sensitive pitch-control propeller.