American Indian & The West June 8th Sale
Sat, Jun 8, 2019 12:00PM EDT
Lot 338
Vintage Aerofoil Shape Copper Tipped Propeller
Estimate: $200 - $400
Bid Increments
| Price | Bid Increment |
|---|---|
| $0 | $5 |
| $50 | $10 |
| $100 | $25 |
| $500 | $50 |
| $1,000 | $100 |
| $2,000 | $250 |
| $5,000 | $500 |
| $10,000 | $1,000 |
| $25,000 | $2,500 |
| $100,000 | $5,000 |
For your bidding pleasure is this Vintage Aerofoil Shape Copper Tipped Propeller. The twisted aerofoil shape of modern aircraft propellers was pioneered by the Wright brothers. While some earlier engineers had attempted to model air propellers on marine propellers, the Wrights realized that a propeller is essentially the same as a wing, and were able to use data from their earlier wind tunnel experiments on wings. They also introduced a twist along the length of the blades. This was necessary to ensure the angle of attack of the blades was kept relatively constant along their length. The understanding of low speed propeller aerodynamics was fairly complete by the 1920s, but later requirements to handle more power in smaller diameter have made the problem more complex. The condition of this propeller is good, though you can see its age; and has a chip starting to accumulate towards the center of the propeller. The propeller is tipped with sheets of copper . This propeller also has some hardware attached tot he center of the propeller. The measurements of the propeller are 6' x 4".
For a complete representation of condition and for additional images please call 800-686-4216. It is the buyer’s responsibility to view each image and preview the item to determine condition.
Condition
After you have succeessfully completed your purchase, including payment of your item, the shipping process will begin. Our company has partnered with a few local third party shipping vendors. Shipping will be handled between these third party business and the buyer. Auction company is not responsible for shipment or any duties there-in unless stated below.
Firearms will be shipped by our company. Once you invoice has been paid for contact Mark at 800-686-4216 ext. 3 for shipping infomation on firearms.
After your invoice has been paid one of the below third party shippers will pickup your items. Once these companies have created a shipping quote for you they will contract you using the contact information you have provided on your auction registration. Make sure to include the shipping address and correct contact information for a success shipping experience.
For questions on shipping please contract the companies below or JoEllen at 800-686-4216 ext. 1
For shipping quotes please contract the companies below:
"The UPS Store” #2420
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Bozeman, MT 59715
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Fax: 406-219-2209
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