Crosswind resistant fletching construction
View Patent ↗A molded aerodynamically crosswind resistant fletching includes pairs of spaced apart fletchings having distal edges bowed inwardly towards each other thus to deflect crosswinds over the tops of the fletchings.
1. Apparatus for resisting the crosswind effect on arrows provided with fletchings comprising:
a number of pairs of fletchings spaced about a central shaft of the arrow, each of said pairs of fletchings having vertically rising surfaces having tips which are arched inwardly towards each other at the distal edges of the fletchings such that the fletchings are bowed inwardly to present minimal area to crosswinds while at the same time directing the flow of the crosswinds around the arrow.
2. The apparatus of claim 1 , wherein the numbers of pairs of fletchings is 3 or greater.
3. The apparatus of claim 2 , wherein said fletchings are mounted to said central shaft of said arrow so as to spiral down said arrow from the proximal point of said arrow to the distal end of said arrow thus to engender rotation of said arrow when in flight.
4. The apparatus of claim 1 , wherein said pairs of fletchings are spaced apart so as to create a valley between the pairs of fletchings.
5. The apparatus of claim 4 , wherein the valley between the pairs of fletchings is narrow at the outward tips of said fletchings such that crosswinds that impact said fletchings are not carried in said valley.
6. The apparatus of claim 1 , wherein each of said fletchings of said pair is non-straight.
7. The apparatus of claim 6 , wherein said pairs of fletchings are bowed such that the facing internal surfaces of said fletchings are bowed towards each other.
8. The apparatus of claim 7 , wherein said bowed in surfaces of said fletchings create a valley between the adjacent pairs of fletchings.
9. The apparatus of claim 8 , wherein the bowed in distal edges of said fletchings form an almost sealed notch over the valley between the fletchings such that crosswind airflow is directed over the distal edges of the fletchings due to the curvature of the spaced apart fletchings in the pair.
10. A method for reducing the effect of crosswind on an arrow comprising the steps of:
providing the arrow with pairs of spaced apart fletchings, said fletchings oriented along the longitudinal axis of the arrow, with the inside surfaces of the opposed fletchings being bowed inwardly such that the distal edges of said fletchings are close together, the close together distal edges of the fletchings resulting in the directing of crosswinds about and around the fletchings as opposed to directly impacting the sides of said fletchings, thus to minimize rotational stall.
11. The method of claim 10 , wherein the arrow includes a number of pairs of fletchings.
12. The method of claim 10 , wherein the orientation of said fletchings on said arrow are such as to provide a spiral configuration of said fletchings from a proximal position on said fletchings to a distal end of said fletchings, with said fletchings oriented about the arrow shaft in a spiral configuration to impart rotation of said arrow during flight.