FI124238B - Smelting archery arrow - Google Patents

Description

A fletchless archery arrow

5 FIELD OF THE INVENTION

The invention relates a fletchless archery arrow comprising a point portion, a nock portion, and an elongated shaft portion between said point portion and said nock portion, said arrow having a longitudinal axis and a convex outer surface.

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BACKGROUND OF THE INVENTION

Publications US 5,273,293 and US 6,129,642 and US 2003/0017892 all disclose fluted arrows for attaining different purposes like lower weight thanks to higher 15 strength, smaller drag, and avoidance of repairs.

Document US 5,273,293 concerns an arrow and its shaft wherein the shaft has a longitudinal axis extending between the arrowhead and the arrow nock. Flight feathers are disposed on the shaft near the nock to guide and rotate the arrow during 20 flight. The shaft is hollow having longitudinally extended, substantially straight flutes to strengthen and stiffen the shaft. Strengthening and stiffening the shaft permits a smaller diameter shaft with a thinner wall thickness to be used to lighten the shaft and arrow without sacrificing the strength and stiffness of the arrow. The arrow and especially the flutes may be covered by a boron or graphite fiber layer. 25 This way a very lightweight but simultaneously very strong arrow is attained.

Document US 6,129,642 discloses a design of arrow shafts such as used in the field of archery. According to the document such arrow shafts are round and straight, have points of various types, nocks and fletching, whereupon the points are essen-30 tially for penetration either into targets or game, the nock of the arrow functions to co engage the bow string until the arrow is loosed, and the flight characteristics of the o arrow depend primarily on the fletching, either made from feathers or plastic. The ^ document teaches that the fletching, usually consisting of three vanes, each attached V to the rear of the arrow shaft at about 120° from the others, causes a measurable o 35 drag on the arrow and may also become partially or wholly torn from the shaft of x the arrow during use, further impairing the aerodynamics of the flight of the arrow, necessitating the repair or replacement of the fletching. The points have been made from bone, flint, and metal and vary in shape, depending upon their use at targets, § fish or various games. Nocks have been carved into the shaft of the arrow, but are ^ 40 nowadays predominately plastic and replaceable. Fletching has been usually made from feathers, such as turkey, or plastic. Shafts have been made from reed, wood dowels, carbon fiber and metal tubes and have always been round and straight. More particularly the document teaches the use of an aerodynamic groove on the bottom of the shaft of the arrow to allow the shaft to capture air to fly further and 2 more accurately, whereupon much as the groove on the bottom of a snow ski helps it to track in a straight line, the groove on the bottom of the arrow shaft has a stabilizing action that helps the arrow to fly straight.

5 Further, document US 2003/0017892 relates to an archery arrow with a fluted or crimped shaft, which can be made lighter and hence provide greater velocity than a standard, non-fluted arrow. The document also describes a fluted arrow wherein the fluting includes grooves that spiral along the length of the shaft, allowing spin to be imparted to the arrow. Spinning the arrow about its shaft will give it increased sta-10 bility. According to the document the arrow disclosed may have less fletching than a standard arrow, because the spin imparted to the arrow reduces or may eliminate the need for fletching. With less fletching, there is less wind resistance, less susceptibility to coming in contact with something in flight, and less noise in handling the arrow. Further, the arrow of the document includes a nock adapter and a special 15 nock attachable to the nock adapter that interacts with a nock receiver attached to the bowstring to impart spin to the arrow. The special nock also lessens the problem of the arrow falling off the bow string when the hunter lets down his draw to take a break from a full draw.

20 SUMMARY OF THE INVENTION

The fletchless archery arrow according to the invention is characterized by claim 1. some preferable embodiments are described in dependent claims. The nock portion or the rear section of the shaft portion next to the nock portion comprises at least 25 two tubular flow holes having front ends open at said convex outer surface and open rear ends, which tubular flow holes extend either helically or linearly with an inclination angle in respect to the longitudinal axis of the arrow. These either helically around the longitudinal axis or linearly across the arrow extending tubular flow holes makes a better flight stabilizer for the arrows, and simultaneously minimizes 30 any direction error caused by contacting the bow or other parts of the archery ^ equipment. Also a flatter trajectory is usually achieved, which further enhance shooting accuracy.

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^ BRIEF DESCRIPTION OF THE DRAWINGS

° 35 1 Fig. 1 is a side view of the fletchless arrow flight stabilizer according to the first embodiment of the invention, which flight stabilizer is formed in the nock portion g of the arrow, the figure also generally visualizing the connection between the nock c\j portion and a tubular shaft portion.

I 40

Fig. 2 is a side view of the fletchless arrow flight stabilizer according to the second embodiment of the invention, which flight stabilizer is formed in the nock portion of the arrow.

5 3

Fig. 3 is a side view of the fletchless arrow flight stabilizer according to the third embodiment of the invention, which flight stabilizer is formed in the rear section of the solid shaft of the arrow.

Fig. 4 is a side view of the fletchless arrow, which has an arrow flight stabilizer according to the invention, in the same view as in figures 1 to 3.

Fig. 5 schematically illustrates the configuration of a single tubular flow hole for the 10 flight stabilizer according to the invention, which flow hole extends helically around a longitudinal axis of the arrow, whereupon the front end of the tubular flow hole is outwards open at the convex surface of the arrow, and the rear end of the tubular flow hole is backwards open along the axis of the arrow, and whereupon the helical center curve of the flow hole specifically extends along a virtual surface of 15 revolution, e.g. along a virtual cone surface - in the respective view as Figs. 1 to 4.

Fig. 6 schematically illustrates the configuration of a single tubular flow hole for the flight stabilizer according to the invention, which flow hole extends linearly across the nock or the body of the arrow, whereupon the front end of the tubular flow hole 20 is outwards open at the convex surface of the arrow, and the rear end of the tubular flow hole is also outwards open at the convex surface of the arrow, and whereupon the center line of the flow hole specifically is one of the generators of a virtual twisted cylinder surface, e.g. elliptic hyperboloid of one sheet - in the respective view as Figs. 1 to 5.

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Fig. 7 visualizes a single tubular flow hole according to the invention, which tubular flow hole has the center curve extending along a virtual cone surface, whereupon the front end of the flow hole is open at the convex surface of the arrow and the rear end of the flow hole is open along the axis of the arrow - seen in the direction VI of cm 30 Fig. 5.

δ ^ Fig. 8 visualizes a single tubular flow hole according to the invention, which tubular V flow hole has the center curve extending along a virtual cylinder surface, where- o upon both the front end of the flow hole and the rear end is open at the convex sur- x 35 face of the arrow - in a direction corresponding direction VI of Fig. 5 and direction VII of Fig. 6.

c\j c\j co Fig. 9 visualizes a single tubular flow hole according to the invention, which flow q hole has the center line extending across a virtual cylinder like an arrow having a ^ 40 convex surface, whereupon both the front end of the flow hole and the rear end is open at the convex surface of the arrow - in the direction VII of Fig. 6.

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Figs. 10A and 10B show two tubular flow holes according to the invention, which flow holes extend helically around the longitudinal axis of the arrow and open backwards through one open rear end, which flow holes have a polygonal cross-section, in cross-sectional views I-I and II—II of Fig. 1, respectively.

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Figs. 11A and 1 IB show three tubular flow holes according to the invention, which flow holes extend helically around the longitudinal axis of the arrow and open backwards through a rear end or ends, which flow holes have an oval cross-section, in cross-sectional views III—III and IV-IV of Fig. 2, respectively.

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Figs. 12A and 12B show four tubular flow holes according to the invention, which flow holes extend linearly across the arrow and open outwards from the arrow's convex surface through a same number of rear ends as is the number of flow holes, which flow holes have a circular cross-section, in cross-sectional views V-V and 15 VI-VI of Fig. 3, respectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Archery is the art, practice, or skill of propelling arrows with the use of a bow. Ar-20 chery can be used for hunting, combat, or recreation. The arrow discussed in this paper concerns arrows to be used together with any type of bows, like a short bow, a longbow, a recurve bow, a reflex bow, a compound bow (e.g. US 3,486,495) or a crossbow etc. It is pointed that bow stabilizers have nothing to do with flight stabilization of the arrow. The classical archery arrow consists of the point, the shaft, the 25 fletching and the nock, whereupon the fletching can be attached on the nock and/or on the shaft near the nock. The fletching is traditionally made from bird feathers, but also solid plastic vanes and thin sheetlike spin vanes have been used, and the fletching is attached with thin double sided tape, glue, or, traditionally, sinew. The shafts of arrows are typically composed of solid wood, fiberglass, aluminium alloy, 30 carbon fiber, or composite materials. Arrow sizes very greatly, but has typically a ^ total length between 45 cm and 150 cm. The arrow is generally, but not necessarily, ^ perpendicular to the bow when nocked on the string. The flight velocity of arrows ? generally ranges from 100 km/h to 300 km/h, depending on the bow power, the ar- g row weight and the wind speed. The classical fetching causes errors in flight direc- x 35 tions of the arrows, when contacting the bow or other parts of the equipment, like ^ sight or aiming means, clicker, arrow rest etc., after releasing the arrow. During free cvj flight after leaving the bow, the fletching stabilizes the arrow's flight effectively, but § cannot of course correct any direction error. This is probably why it has been tried ™ to make fletchless arrows, o ™ 40

Now considering the external ballistics, the classical archery arrows with fletching are fin-stabilized, like any other projectiles with fins or fletches or similar components. In this situation the flight stability is achieved by forcing the center of pres- 5 sure to be behind the center of gravity by using tail surfaces. The center of pressure behind the center of gravity condition yields stable arrow or projectile flight, meaning that the arrow/projectile will not overturn during flight through the atmosphere due to aerodynamic forces. Specifically in the classical prior art arrows the center of 5 pressure is always near the nock portion i.e. at the rear portion of the arrow - because the fletching or fins evidently cause the main portion of the drag and so substantially affect the position of the center of pressure, and the center of gravity is either near the longitudinal center of the arrow - typical in the case of competition or leisure arrows with lightweight points or closer the point portion of the arrow - in 10 the case of hunting arrows having heavy arrow heads. Under these conditions the distance between the center of pressure in the rear part of the arrow and the center of gravity in the center or front part of the arrow is very large, and consequently no other means for flight stabilization of the arrow is necessary.

15 The invention describes an improved fletchless archery arrow 1, which comprises a point portion 2, a nock portion 3, and an elongated shaft portion 4 between the point portion and the nock portion, whereupon the arrow has a longitudinal axis C and a convex outer surface 13. The convex outer surface 13 means that every cross-section of the arrow's elongated shaft portion 4 has convex outline contour only, 20 which outline contours together form the outer surface 13. More specifically, each of the infine number of outline contours along the shaft portion and the nock portion has only convex sections, but not any concave sections. Accordingly, the outline contours perpendicular to the longitudinal axis C, may include sections, which have different curvatures, but all of them are outwards convex anyway. Preferably, but 25 not necessarily the convex outer surface 13 is cylindrical, as can be understood from Figs. 5 to 12B. No part in the arrow 1 according to the invention extends outside the outer surface 13 between the nock portion 3 and the shaft portion 4. This means that the mentioned outer surface 13 forms the envelope surface of the whole arrow 1, whereupon all parts of the arrow 1 along the nock portion 3 and along the shaft por-^ 30 tion 4 are inside the convex outer surface 13 of the arrow. When the outer surface o form is cylindrical, which is preferred but not compulsory, the arrow has cylindrical ^ envelope surface, which does not cause any flight direction errors during contacting V with the bow, arrow rest, aiming aids etc. The nock portion 4 often has one groove o or two or more grooves 24 - as can be seen in Figs. 1, 2 and 4 - for receiving the x 35 string of the bow, or alternatively the nock portion 4 can have other kind of configu- ration 25 - as can be seen in Fig. 3, which nock configuration is received by the c\j contacting parts attached on the string for gripping the arrow and releasing it co which kind of means are familiar from various documents, δ ^ 40 The arrow with the tubular flow holes 9 forming the inventive flight stabilizer has a convex outer surface 13 along the nock portion 3 between the optional tubular flow holes and along the a rear section 5 of the shaft portion 4 next to the nock portion 6 between the optional tubular flow holes there, too. Accordingly the arrow's outer surface 13 is convex between the input or front ends 8 of the tubular flow holes 9 and between the exit or rear ends 7 of the tubular flow holes 9 in case they are within the nock portion or the above mentioned shaft portion. The point portion 2 and 5 the nock portion 3 as such often have non-convex sections, e.g. in the arrowhead of the point portion 2, and a groove for the string in the nock portion. Particularly in the inventive construction, the nock portion 3, or a rear section 5 of the shaft portion 4 next to the nock portion comprises at least two tubular flow holes 9 having input or front ends 8 open at the convex outer surface 13 and open exit or rear ends 7. 10 These tubular flow holes 9 extend either helically or linearly with an inclination angle K in respect to the longitudinal axis C of the arrow 1, i.e. the direction of the tubular flow holes 9 resembles a short section of a very steep screw surface. More in detail, the center curve - in fact a tangent of the curve - or center line 15 is projected to a plane P, which is parallel with the section of the center curve or center 15 line under consideration and includes the longitudinal axis C, and then the inclination angle K is the angle between the center line 15, or the tangent in question of the center curve 15 and the longitudinal axis C. These inventive linear or curved tubular flow holes 9, which allow air to flow - or allow water flow in underwater harpooning - therethrough, and which are tilted by the inclination angle K relative to the 20 longitudinal axis C, engender flight stabilizer for the arrow. Because of the inclination angle K of the flow holes 9, the flow of fluid like air causes the arrow to rotate around its longitudinal axis C. The tubular flow holes 9 have smooth and continuous inner surfaces 23 to allow homogenous flow of the surrounding fluid, which is typically air, but may be also water or other gaseous or liquid medium.

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Considering the external ballistics in the situation according to the invention, when there is no fletching on the arrow, the position of the center of pressure is either a bit uncertain and/or too far towards to nock portion 3 of the arrow 1, whereupon the arrows may be destabilized during their flight. It shall be understood that the center ^ 30 of gravity is in the same position as in arrows with fletching, i.e. fletching naturally o does not affect the position of the center of gravity, or has only a minimal effect.

^ The center of gravity is anyway either near the arrow's center of length - typical in V the case of competition or leisure arrows with lightweight points, or closer the point o portion of the arrow - typical in the case of hunting arrows having heavy arrow x 35 heads. Neither the center of gravity nor the center of pressure is marked in the draw- “ ings, because this is a theoretical analysis, and not dimensioning, and because the c\{ positions of these centers are changed depending on various design variables. The § factors concerning the location of the centre of pressure are e.g. the flowfield βίαιος ture, the shape air density and surface features. It is believed that in this situation the ^ 40 flight stability is achieved by forcing the arrow or projectile to spun around its lon gitudinal - leading to trailing - axis C. The spinning mass makes the arrow's or projectile's longitudinal axis C resistant to the destabilizing overturning torque of the 7 center of pressure being even in front of the center of gravity. Also, albeit the effect of the Magnus force on an arrow's flight path itself is usually insignificant compared to other forces such as aerodynamic drag, it however is known to affect greatly the arrow's stability, which in turn affects the amount of drag and many other fac-5 tors. The flight stability of the arrow is affected because the Magnus effect acts on the arrow's centre of pressure instead of its centre of gravity. The yaw of the arrow is neglected. Anyway, whether the conclusion/explanation above is correct or not quite perfect, the arrow according to the invention is extremely stable during flight and does not suffer direction errors caused by contacting the bow or its assistive de-10 vices.

According to the invention, each of the tubular flow holes 9 has a circular or oval or polygonal cross-section 6 and a center line/curve 15, which forms the described inclination angle K, which is greater than 10° and smaller than 60° in respect to the 15 longitudinal axis C of the arrow 1. Preferably, the inclination angle K is at least 25° and at maximum 45° in a parallel plane P through the longitudinal axis C, as described earlier in this text. These tilted tubular holes 9 are very effective in catching or abducting typically air, or any other fluid, from the convex outer surface 13 of the arrow and directing the catched or abducted air/fluid as a flow or stream with 20 low drag backwards and simultaneously peripherally. This means that the air/fluid flow F out of the holes 9 has both an axial component A and a peripheral component B, which peripheral component B causes the arrow 1 to rotate around its longitudinal axis C.

25 In the fletchless archery arrow 1 according to one embodiment of invention each of the center curves 15 of the tubular flow holes 9 extend around the longitudinal axis C and simultaneously along a virtual surface of revolution 10 with an apex 11 that is backwards from or within the nock portion 3. Here the apex 11 is within a moderate and/or measurable distance within or from the nock portion 3. The mentioned virtues 30 al surface of revolution 10 is typically a virtual cone surface with the apex 11, or a o virtual body looking generally like a cone, whereupon the virtual surface of revolu- ^ tion 10 has either a virtual straight slant height 12, as in classical cone, or a convex T or a concave virtual slant height 12 - as visualized in Figs. 5 and 7. Preferably the o virtual surface of revolution 10 is right and circular, i.e. the rotation/revolution axis x 35 passing through the apex 11 is perpendicular to the base of the surface of revolution “ and perpendicular to the longitudinal axis C, and the points of the surface of revolu- c\| tion are points of circles. The mentioned rotation/revolution axis is coincident with co the longitudinal axis C of the arrow 1. But in two further embodiments the men- 5 tioned virtual surface of revolution 10 can also be a virtual cylinder, whereupon its ^ 40 apex is at an infinite distance from the nock portion, in which case each of the cen ter curves 15 extend along a right-angled, i.e. a non-twisted virtual cylinder surface, or along a twisted virtual cylinder surface in other position than its generator - as 8 visualized in Fig. 8. In these three variants the center curves 15 are not linear but just curved, as are the respective tubular flow holes 9. Alternatively in a further embodiment, each of the center lines 15 can extend as a generator of a virtual twisted cylinder surface 20, which is a hyperboloid of one sheet. In this variant the center 5 line 15 is not curved but linear- as visualized in Fig. 6 and 9.

Each of the linear or curved flow holes 9, which have both their input/front ends 8 and their exit/rear ends 7 at the convex outer surface 13 of the arrow - as shown in Figs. 3, 6, 8 and 9 - is individual or separate from each other, i.e. these kind of flow 10 holes 9 does not intersect each other within the arrow 1. Under this situation the air flows through the holes remain undisturbed. In the case when the exit/rear ends 7 open backwards in the nock portion 3 - as shown in Fig. 1, 2 and 7 - the tubular flow holes 9 preferably, but not necessarily, are combined within the arrow so that the several flow holes 9 have a common exit/rear end 7. Under this situation the 15 center curves 15 of the tubular flow holes, and the holes naturally too, arc so that they are parallel, or approach parallelism with each other and the longitudinal axis C near their rear end 7, whereupon the air flows through the holes remain undisturbed, too. Of course in the case when the rear ends 7 open backwards in the nock portion 3, these rear ends and the tubular flow holes 9 can also be totally separate 20 from each other.

As defined the arrow comprises at least two tubular flow holes 9. Accordingly, there can be two, or three, or four, or even several tubular flow holes 9 in a single arrow 1. Independent of the number of the tubular flow holes 9, the flow holes in an arrow 25 1 shall not cross each other but can unify or join each other, which means that the air, or any other fluid, coming into and through the front end 8 of a tubular flow hole flows out of the rear end 7 of same flow hole, or out of the rear end 7 of a flow hole common to several or all tubular flow holes. Without mutual crossings the flu-id/air flow in each flow hole 9 is very homogenous, whereupon unnecessary losses, ^ 30 e.g. by turbulence, are avoided. In an analogous way with unifying or joining flow o holes 9 the air flow in each flow hole 9 is very homogenous, whereupon unneces- ^ sary losses, e.g. by turbulence, are avoided, too. For attaining this homogenous flow V of the air or other fluid through the tubular holes 9 the rear ends 7 of the tubular o flow holes 9 are backwards or outwards open. The rear ends 7 can be open at or x 35 around the longitudinal axis C of the arrow - as in Figs. 1, 2, 5, 7, 10B and 1 IB, or at the convex outer surface 13 of the arrow - as in Figs. 3, 6, 8, 9 and 12B.

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co Each of the tubular flow holes 9 within the nock portion 3 or within the rear section 5 5 of the shaft portion 4 respectively have a hole length LH between the front end 8 00 40 of each flow hole and the rear end 7 of each flow hole. The hole length LH is meas ured parallel with the direction of the longitudinal axis C of the arrow 1, and accordingly this hole length LH is preferably at least 15 mm and at maximum 70 mm, 9 even if shorter hole lengths LH down to 10 mm and greater hole lengths LH up to 100 mm are possible. Often the hole length LH is between 20 mm and 30 mm. I.e. the hole length LH of the tubular flow holes 9 is only a fraction of the total length of the arrow. As already mentioned, the tubular flow holes 9 have a circular cross-5 sectional form, or an oval cross-sectional form, or a polygonal cross-sectional form, which cross-sections and respective forms are perpendicular to longitudinal axis C of the arrow. These perpendicular cross-sectional forms and the parallel length are valid, because the inventive tubular flow holes 9 are almost or approaching parallelism with the longitudinal axis C. Because the tubular flow holes 9 intersect the con-10 vex outer surface 13 in a small/sharp angle - formed between the center curve/line 15 and the convex outer surface, not shown in the Figures, each of the front ends 8 has a prolonged circular or oval or polygonal opening configuration 14 along the convex outer surface 13. Said opening configuration 14 has an opening length LF in the direction of the longitudinal axis C, and this opening length LF is at least 10% 15 and at maximum 96%, or often between 15% and 90% of the hole length LH between the front end 8 of each flow hole and the rear end 7 of each flow hole.

Shortly, the input or front ends 7 of the tubular flow holes 9 open from the convex outer surface 13 of the arrow, and the exit or rear ends 8 open either to the convex 20 outer surface 13 of the arrow, whereupon flow out of the holes 9 is in direction substantially deviating from direction of the longitudinal axis C, or to back surface of the arrow inside the convex outer surface 13 or its virtual extension, whereupon flow out of the holes 9 is either parallel with the longitudinal axis C or almost parallel with the longitudinal axis C.

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Claims (11)

1. Sulaton jousiammuntanuoli (1), joka käsittää kärkiosan (2), nokkiosan (3) ja pitkänomaisen varsiosan (4) mainitun kärkiosan ja mainitun nokkiosan välissä, jolloin 5 mainitulla nuolella on pituusakseli (C) ja kupera ulkopinta (13), tunnettu siitä, että mainittu nokkiosa (3) tai mainitun akseliosan (4) mainitun nokkiosan vieressä oleva takaosa (5) käsittää ainakin kaksi putkimaista virtausreikää (9), joilla on mainitulla kuperalla ulkopinnalla (13) avoimet etupäät (8) ja avoimet takapäät (7), jotka putkimaiset virtausreiät ulottuvat joko kierteisesti tai lineaarisesti kallistuskulmalla (K) 10 mainittuun pituusakseliin (C) nähden.A molten archery arrow (1) comprising a tip member (2), a cam member (3) and an elongated shaft member (4) between said tip member and said cam member, wherein said arrow has a longitudinal axis (C) and a convex outer surface (13) characterized by that said cam portion (3) or a rear portion (5) adjacent said cam portion of said shaft portion (4) comprises at least two tubular flow holes (9) having open forward ends (8) and open rear ends (7) on said convex outer surface (13), the tubular flow holes extending either helically or linearly with an inclination angle (K) 10 relative to said longitudinal axis (C). 2. Patenttivaatimuksen 1 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että kullakin mainituista putkimaisista virtausrePistä (9) on ympyrämäinen tai ovaali tai monikulmainen poikkileikkaus (6) ja keskilinja/kaari (15), joka muodostaa maini- 15 tusta kallistuskulmasta (K) suuremman kuin 10° ja pienemmän kuin 60° nuolen mainittuun pituusakseliin (C) nähden.Molten archery arrow according to Claim 1, characterized in that each of said tubular flow ramps (9) has a circular or oval or polygonal cross-section (6) and a centerline / arc (15) forming more than 10 of said inclination angle (K). ° and smaller than 60 ° the direction of arrow with respect to said longitudinal axis (C). 3. Patenttivaatimuksen 2 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että mainittu kallistuskulma (K) on ainakin 25° ja enintään 45° mainittuun pituusakseliin 20 (C) nähden.Molten archery arrow according to claim 2, characterized in that said tilt angle (K) is at least 25 ° and at most 45 ° with respect to said longitudinal axis 20 (C). ? 4. Patenttivaatimuksen 2 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että o - kukin mainituista keskikaarista (15) ulottuu mainitun pituusakselin (C) ympäri O ^ pitkin virtuaalista pyörähdyspintaa (10), jolla on kärki (11) taaksepäin nokkiosasta c\j x 25 (3) tai sen sisällä; tai CC - kukin mainituista keskilinjoista (15) ulottuu virtuaalisen kierteisen lieriöpinnan CNJ o (20) generaattorina. CVJ δ C\J? Molten archery arrow according to claim 2, characterized in that o - each of said central arcs (15) extends about said longitudinal axis (C) along a virtual rotation surface (10) having a tip (11) rearward of the camshaft 25 (3). ) or within it; or CC - each of said center lines (15) extending as a virtual helical cylindrical surface CNJ 0 (20) generator. CVJ δ C \ J 5. Patenttivaatimuksen 1 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että 30 mainittu nuoli käsittää kolme putkimaista virtausreikää (9).Molten archery arrow according to claim 1, characterized in that said arrow comprises three tubular flow holes (9). 6. Patenttivaatimuksen 1 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että kullakin mainituista putkimaisista virtausrei’istä (9) mainitun nokkiosan (3) sisällä tai vastaavasti varsiosan (4) mainitun takaosan (5) sisällä on reiänpituus (LH) kunkin 5 virtausreiän etupään (8) ja kunkin virtausreiän takapään (7) välillä, joka reiänpituus (Lh) on ainakin 10 mm ja enintään 100 mmMolten archery arrow according to claim 1, characterized in that each of said tubular flow holes (9) within said cam portion (3) or respectively within said rear portion (5) of the stem portion (4) has a hole length (LH) in front of each of the 5 flow holes ) and the rear end (7) of each flow hole having a hole length (Lh) of at least 10 mm and at most 100 mm 7. Patenttivaatimuksen 1 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että mainittujen putkimaisten virtausreikien (9) mainitut takapäät (7) ovat taaksepäin 10 avoimet - nuolen pituusakselin (C) kohdalla tai ympäri; tai - nuolen mainitun kuperan ulkopinnan (13) kohdalla.7. claimed in claim 1 smelter archery arrow, characterized in that said rear ends of said tubular flow holes (9) to (7) are open back 10 - arrow longitudinal axis (C), at or around; or - the direction of the arrow said convex outer surface (13) of the case. 8. Patenttivaatimuksen 2 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että 15 kullakin mainituista etupäistä (8) on pidennetty ympyrämäinen tai ovaali tai moni- kulmainen aukkokonfiguraatio (14), jolla on aukonpituus (LF) mainitun pituusakselin (C) suunnassa, joka aukonpituus (LF) on ainakin 10 % ja enintään 96 % kunkin virtausreiän etupään (8) ja kunkin virtausreiän takapään (7) välisestä reiänpituudesta (Lh)· 20Molten archery arrow according to claim 2, characterized in that each of said front ends (8) has an elongated circular or oval or polygonal aperture configuration (14) having an aperture length (LF) in the direction of said longitudinal axis (C), which aperture length (LF) ) is not less than 10% and not more than 96% of the hole length (Lh) between the front end (8) of each flow hole and the rear end (7) of each flow hole · 20 9. Patenttivaatimuksen 4 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että ^ mainitulla virtuaalisella pyörähdyspinnalla (10) on joko suora tai kupera tai kovera δ ^ virtuaalinen sivukorkeus (12). c\j cpMolten archery arrow according to claim 4, characterized in that said virtual rotation surface (10) has either a straight or a convex or concave virtual side height (12). c \ j cp 10. Patenttivaatimuksen 1 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että CC nuolen (1) kaikki nokkiosaa (3) ja varsiosaa (4) pitkin olevat osat ovat nuolen mai- CVJ o nitun kuperan ulkopinnan (13) sisällä. CO CVJ δ CVJ10. claimed in claim 1 smelter archery arrow, characterized in that all along the nokkiosaa (3) and the stem part (4) parts of the CC of the arrow (1) of the arrow milk CVJ No nitun inside of the convex outer surface (13). CO CVJ δ CVJ 11. Patenttivaatimuksen 1 mukainen sulaton jousiammuntanuoli, tunnettu siitä, että mainituilla putkimaisilla virtausrei’illä (9) on tasaiset ja yhtenäiset sisäpinnat (23) ympäröivän fluidin homogeenisen virtauksen mahdollistamiseksi. 5 't δ c\j C\l O CM X cc CL CM CM O CO CM O CMMelting arrow of claim 1, characterized in that said tubular flow holes (9) have smooth and uniform inner surfaces (23) to allow a homogeneous flow of surrounding fluid. 5 't δ c \ j C \ l O CM X cc CL CM CM O CO CM O CM