Airplane Vintage WWI Propeller 47.25 with Clock Wood Laminated Model Aircraft. This Decorative WWI Aircraft Wood Propeller is brand new. The Aircraft Wood Propeller is made of alternating light & dark pieces of solid laminated wood and brass. A wall mounting bracket is included. The propeller has a natural wood finish and has been lightly distressed.The clock rim is brass plated metal, the clock face is paper with large roman numerals and an airplane depicted. The clock can be rotated so the propeller can be displayed in any position. This decorative propeller is a replica of a WWI Biplane propeller. It is sure to become a decorative & conversational addition to your decor whether hanging over the mantel or leaning against the wall in a corner. Size: 47.25" length x 4.25" width x 2.25 deep. Material: Solid laminated wood & brass. Construction: Alternating light & dark pieces laminated wood.
Includes: Wall mounting bracket (please see below). Clock Requires one AA battery (not included). Handcrafted individually, colors may vary.Aircraft propellers convert rotary motion from piston engines or turboprops to provide propulsive force. They may be fixed or variable pitch.
Early aircraft propellers were carved by hand from solid or laminated wood with later propellers being constructed from metal. The most modern propeller designs use high-technology composite materials. The twisted airfoil (aerofoil) shape of modern aircraft propellers was pioneered by the Wright brothers. They found that a propeller is essentially the same as a wing and so were able to use data collated from their earlier wind tunnel experiments on wings. They also found that the relative angle of attack from the forward movement of the aircraft was different for all points along the length of the blade, thus it was necessary to introduce a twist along its length.
Their original propeller blades are only about 5% less efficient than the modern equivalent, some 100 years later. The item "Airplane Vintage WWI Propeller 47.25 with Clock Wood Laminated Model Aircraft" is in sale since Monday, June 22, 2015. This item is in the category "Home & Garden\Home Décor\Clocks\Wall Clocks".The seller is "atlantisgift" and is located in New York. This item can be shipped to United States, Canada, United Kingdom, Denmark, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Colombia, Costa rica, Dominican republic, Panama, Guatemala, El salvador, Honduras.