Canoeing oar

A technology of paddles and blades, applied in the field of rowing paddles, can solve the problems of sinking of the hull, increase of additional resistance, slow forward speed, etc., and achieve the effects of reducing additional resistance, increasing speed, and improving competition performance.
CN101992848AInactive Publication Date: 2011-03-30梅国威
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
梅国威
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a canoeing oar which comprise an oar rod and an oar blade, wherein an angle theta is formed between the axis of the oar rod and the plane of the oar blade, and the angle theta is more than 0 degree and less than 90 degrees; the shape of the oar blade meets the conditions that the length is less than or equal to the width; and the oar blade is of a flipper shape, a duck egg shape, or a broad share shape and the like. The canoeing oar of the invention has the advantages that the additional drag f of a canoe moving forward can be reduced, the water-skiing efficiency is enhanced, the forward speed is improved, and the game results of players are improved.
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Description

technical field

[0001] The invention relates to a rowing paddle. Background technique

[0002] At present, the known rowing paddle structure is generally composed of a cylindrical paddle shaft and a vertical shovel-shaped blade (the length of the blade is greater than the width, a>b), and the axis of the paddle shaft is in the plane of the paddle, that is, the paddle The rod and the paddle are in a plane and are a straight structure.

[0003] When the boat advances on a calm water surface, it is subject to a horizontal forward thrust F and a horizontal backward resistance f, the horizontal forward thrust F is called the driving force, and the horizontal backward resistance f is called the normal resistance. When an athlete strokes water with a straight oar, when the oar just enters the water, the oar shaft and blade are vertical to the water surface. As the athlete paddles hard, according to Newton's third law, the surface of the oar facing the water will be subject to a...

Claims

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