Shuttlecock and shuttlecock feather simulation

Abstract

This invention discloses a simulated badminton shuttlecock feather and a shuttlecock. The simulated badminton shuttlecock feather includes a shaft and a vane. The vane is arranged on the end of the shaft away from the shuttlecock head. The cross-section of the vane gradually widens in the direction away from the shuttlecock head and gradually narrows in the direction closer to the shuttlecock head. The vane is made of polypropylene and ABS resin. The vane also includes multiple barbs, which form a preset angle with the central axis of the shaft, with the preset angle being 30-50°. The distribution density of the barbs on the vane is 2-4 barbs / mm. This invention, through the design of an ultra-thin vane with gradually varying thickness and 2-4 barbs / mm angled, allows for efficient energy transfer and triggers a whiplash effect "sonic boom" when the shuttlecock is hit. The dense barbs can buffer and disperse the impact, improving energy utilization and directional accuracy. The dense angled barbs also optimize the flight performance of the shuttlecock, thus more closely resembling the flight characteristics and hitting feel of a natural badminton shuttlecock (feather).

Description

Technical Field

[0001] This utility model relates to the field of badminton technology, and in particular to a simulated badminton shuttlecock feather and a badminton shuttlecock. Background Technology

[0002] Existing synthetic badminton shuttlecock feathers, such as the Victor Carbon PRO, while similar in shape to natural shuttlecocks, still have some key defects and limitations. These defects mainly manifest as a poor feel upon impact, a less crisp sound upon impact, and the sharpness of the carbon fiber shaft potentially causing paint chipping or string damage. These shortcomings make it difficult to meet the stringent performance requirements of high-level players and enthusiasts. In particular, its "one-piece" structure, while completely replicating the morphological characteristics of natural feathers, lacks the microscopic structure of the branched branches on the shaft. This structural defect prevents the formation of the "braid effect" at the moment of impact, and also prevents the generation of a crisp "sonic boom" similar to a whip tip effect, resulting in a duller sound and a lack of the feel of a natural badminton shuttlecock.

[0003] Furthermore, due to structural limitations, existing synthetic shuttlecocks do not exhibit sufficient "contraction" deformation. The feathers cannot form a streamlined, inward-contracting posture, leading to a sharp increase in flight drag and poor trajectory stability. This structural deficiency results in a significant difference in flight performance compared to natural shuttlecocks, affecting flight efficiency and control. When a natural shuttlecock is hit, the feathers and shafts contract inward and backward. As speed decreases, the feathers gradually return to their original shape due to their elasticity. This recovery process allows the shuttlecock to maintain good lift and stability during flight. Existing synthetic shuttlecocks lack this contraction and deformation capability, failing to simulate the flight characteristics of natural shuttlecocks, thus impacting their market competitiveness and user acceptance. Utility Model Content

[0004] This utility model provides a simulated badminton shuttlecock feather and shuttlecock to solve the technical problem of the limitations of existing artificial feather shuttlecocks in terms of flight performance and hitting feel.

[0005] A simulated badminton shuttlecock feather includes a shaft and vanes disposed on opposite sides of the shaft. The vanes are arranged on the shaft at the end away from the shuttlecock head. The cross-section of the vanes gradually widens in the direction away from the shuttlecock head and gradually narrows in the direction closer to the shuttlecock head. The vanes are made of polypropylene and ABS resin. The vanes also include multiple barbs, which form a preset angle with the central axis of the shaft, the preset angle being 30-50°. The distribution density of the barbs on the vanes is 2-4 barbs / mm.

[0006] Optionally, the vane includes a base, a middle stabilizing part, and a tip optimization part connected in sequence; the distribution density of barbs on the base is 2 barbs / mm, and the preset angle between the barbs on the base and the central axis of the quill is 45-47°;

[0007] The distribution density of barbs on the central stabilizing part is 3 barbs / mm, and the preset angle between the barbs on the central stabilizing part and the central axis of the feather shaft is 43-44°.

[0008] The distribution density of barbs on the tip optimization section is 4 barbs / mm, and the preset angle between the barbs on the tip optimization section and the central axis of the feather shaft is 40-42°.

[0009] Optionally, the thickness of the base is 0.25-0.3 mm, the thickness of the middle stabilizing portion is 0.2-0.25 mm, and the thickness of the tip optimization portion is 0.15-0.25 mm.

[0010] Optionally, the simulated badminton shuttlecock feathers further include a sandwich composite structure layer disposed in the thickness direction of the feathers, the sandwich composite structure layer comprising a TPU outer layer, a piezoelectric ceramic fiber middle layer, and a carbon fiber skeleton inner layer.

[0011] Optionally, multiple uniformly arranged biomimetic fish scales are provided on the barbs of the base, middle stabilizing part and tip optimization part, and the edge of each biomimetic fish scale is provided with a preset gradient chamfer, and multiple scales form a unidirectional flow channel.

[0012] Optionally, the surface of the biomimetic fish scale is provided with a plurality of evenly distributed pneumatic adjustment holes.

[0013] Optionally, the mass of the feather vane is 0.12-0.15g; the width of the feather shaft gradually decreases in the direction toward the tip optimization portion.

[0014] This utility model also provides a badminton shuttlecock, including the above-mentioned simulated badminton shuttlecock feathers.

[0015] In this invention, the ultra-thin feather vanes with a gradually varying thickness and the obliquely arranged barbs with a density of 2-4 barbs / mm achieve multiple beneficial effects: when the shuttlecock is hit, energy is efficiently transferred along the length of the vanes, producing a crisp "sonic boom" in conjunction with the whip sheath effect; the dense barbs provide friction buffering and disperse impact energy, preventing trajectory deviation and improving energy utilization and directional control accuracy; during return flight, the convergence and deformation mechanism, through the comb-like structure of the vanes and the oblique arrangement of the barbs, compresses the windward area, reducing flight drag; the oblique barbs and the high strength and elasticity of the polymer materials combined with them optimize flight performance. Compared with vanes made of natural feathers, the shuttlecock has significantly improved durability, flight stability, and hitting feel, meeting the stringent performance requirements of high-level players and enthusiasts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a simulated badminton shuttlecock feather in one embodiment of this utility model.

[0018] 1-Plumule, 2-Vanilla, 21-Base, 22-Middle stable part, 23-Tip optimized part, 3-Barb. Detailed Implementation

[0019] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 As shown, one embodiment of this utility model provides a simulated badminton shuttlecock feather, including a shaft 1 and vanes 2 disposed on opposite sides of the shaft 1. The vanes 2 are arranged on the end of the shaft 1 away from the shuttlecock head. The cross-section of the vanes 2 gradually widens in the direction away from the shuttlecock head and gradually narrows in the direction closer to the shuttlecock head. The vanes 2 are made of polypropylene and ABS resin. The vanes 2 also include multiple barbs 3, which form a preset angle with the central axis of the shaft 1. The preset angle is 30-50°, and the distribution density of the barbs 3 on the vanes 2 is 2-4 barbs / mm. The width of the shaft 1 gradually narrows along its central axis from the shuttlecock head to the vanes 2. The width D1 of the shaft 1 near the shuttlecock head is 3.0-3.5mm, and the width D2 of the shaft 1 near the end of the vanes 2 is 1.0-1.2mm. The overall length L of the feather shaft 1 is 70-75mm. The cross-section of the feather vane 2 is divided into two parts. Taking a certain dividing point of the feather vane 2 (which can be set according to requirements) as the origin, the cross-section of the feather vane 2 gradually widens from the head of the shuttlecock to the origin, and gradually narrows from the end of the feather vane 2 to the origin. The maximum width of the cross-section of the feather vane 2 is 15-20mm. L1 is the distance from the feather shaft 1 to the end of the feather vane 2 closest to the head of the shuttlecock. The maximum length of the cross-section of the feather vane 2 is the difference between L and L1, which can be 37-37.5mm.

[0023] Understandably, the simulated badminton shuttlecock feathers undergo a fully dynamic process during the hit and flight of the shuttlecock as follows:

[0024] First, when the shuttlecock made from the simulated feathers is hit, the force is initially applied to the base of the vane 2, and the energy is transferred along the length of the vane 2 to the tip through the gradually varying thickness design of the vane 2. At this point, the whiplash effect begins to take effect. The obliquely cut barbs 3 with a density of 2-4 barbs / mm, combined with the ultra-thin vane 2 wings with a thickness of 0.15-0.3mm, accurately simulate the fine barb structure on both sides of the peduncle of a natural feather. This forked barb 3 layout forms a rapid backflip motion similar to the tip of a whip at the moment of impact. When the shuttlecock head drives the vane 2 to turn from "forward" to "backward" at high speed, the dense barbs 3 on both sides of the shaft 1 swing at high speed and impact the air, producing a crisp "sonic boom," thus giving the shuttlecock a crisp sound. At the same time, the design of the barb 3 with this density allows the shuttlecock to buffer and disperse the impact energy through the friction between the barbs 3 during flight, avoiding deviation in flight trajectory caused by energy dispersion, and significantly improving the energy utilization rate and directional control accuracy at the moment of impact.

[0025] Then, as the shuttlecock instantly changes from a forward to a backward trajectory, the vane 2 triggers a "contraction deformation" mechanism: due to the densely arranged barbs 3 (2-4 barbs / mm) forming a tight comb structure during convergence, the friction between adjacent barbs 3 restricts lateral displacement, making the convergence action more synchronized; the angled design of the barbs 3 causes them to naturally converge inward rather than diverge outward when subjected to force, further compressing the windward area at the moment of convergence, resulting in a sharp drop in air resistance. At the same time, the backward-tilting barb cluster superimposed the elastic pre-tension force at the base of the barbs 3 to enhance spinal stability. As the shuttlecock's speed decreases, the vane 2 gradually rebounds due to the elastic recovery force of its material. Due to the reasonable density and angle design of the barbs 3, they can elastically store energy during the recovery phase (within about 0.3 seconds), allowing them to maintain a stable parabolic trajectory at the end of the flight. Compared to existing artificial shuttlecocks that lack convergence deformation capabilities, this barb 3 can significantly improve its flight performance and hitting feel.

[0026] Furthermore, the array-cut feather vanes 2 allow for a more even distribution of force when the shuttlecock is struck, preventing damage caused by excessive localized force. The obliquely positioned barbs 3 help optimize the interaction between the shuttlecock and the air, reducing drag and turbulence during high-speed flight, thereby minimizing irregular vibration and deformation of the feather vanes 2. Thanks to the simulation capabilities of the polymer material, the barbs 3 maintain high strength while possessing moderate elasticity, preserving energy release efficiency at the moment of impact and enhancing the shuttlecock's durability and consistency.

[0027] In this invention, the ultra-thin feather vane 2 with a gradually varying thickness and the obliquely arranged barbs 3 with a density of 2-4 barbs / mm achieve multiple beneficial effects: when the shuttlecock is hit, energy is efficiently transferred along the length of the feather vane 2, producing a crisp "sonic boom" in conjunction with the whip sheath effect; the dense barbs 3 provide friction buffering and disperse impact energy, preventing trajectory deviation and improving energy utilization and directional control accuracy; during return flight, the convergence and deformation mechanism, through the comb-like structure of the feather vane 2 and the oblique arrangement of the barbs 3, compresses the windward area, reducing flight drag; the oblique barbs 3, combined with the high strength and elasticity of the polymer material, optimize flight performance, resulting in significant improvements in the shuttlecock's durability, flight stability, and hitting feel, meeting the stringent performance requirements of high-level players and enthusiasts.

[0028] In one embodiment, such as Figure 1 As shown, the feather vane 2 includes a base 21, a central stabilizing portion 22, and a tip optimization portion 23 connected in sequence. The distribution density of the barbs 3 on the base 21 is 2 barbs / mm, and the preset angle between the barbs 3 on the base 21 and the central axis of the shaft 1 is 45-47°. Understandably, the base 21 is primarily responsible for bearing the initial impact force during impact and transmitting energy. The distribution density of the barbs 3 on the base 21 can be set according to requirements. When the density is 2 barbs / mm, the structural strength of the base 21 can be enhanced, the initial impact force during impact can be dispersed, local overload damage can be avoided, and the initial impact force can be efficiently transmitted along the length of the vane 2 to the middle and tip, improving energy transfer efficiency. The preset angle of the barbs 3 on the base 21 can be set according to requirements. When the preset angle is 45-47°, this angle approximates the leading edge angle of attack design, allowing the barbs 3 to effectively cut the air at the moment of impact, reducing drag and providing sufficient power support for the initial flight of the shuttlecock.

[0029] Furthermore, the distribution density of the barbs 3 on the central stabilizing section 22 is 3 barbs / mm, and the preset angle between the barbs 3 on the central stabilizing section 22 and the central axis of the shaft 1 is 43-44°. Understandably, the central stabilizing section 22 is primarily responsible for providing stability and controllability during flight. The distribution density and preset angle of the barbs 3 in the central stabilizing section 22 can be set according to requirements. The distribution density of the barbs 3 in the central stabilizing section 22 is 3 barbs / mm, slightly higher than that of the base 21. This ensures stable energy transfer from the base to the tip optimization section 23 during impact while maintaining sufficient structural strength for energy transmission. The preset angle (43-44°) of the barbs 3 in this section reduces the positive obstruction area of ​​the barbs 3 on the airflow, resulting in less airflow interference when the airflow acts on the barbs 3. This balances structural strength and aerodynamic performance, and specifically improves the flight stability and attitude controllability of the shuttlecock.

[0030] Furthermore, the distribution density of the barbs 3 on the tip optimization section 23 is 4 barbs / mm, and the preset angle between the barbs 3 on the tip optimization section 23 and the central axis of the shaft 1 is 40-42°. Understandably, the tip optimization section 23 is primarily responsible for optimizing the flight characteristics of the shuttlecock and reducing air resistance. Both the density and angle of its barbs 3 can be set as needed. When the distribution density of the barbs 3 on the tip optimization section 23 is 4 barbs / mm, the dense distribution and small angle design of the barbs 3 perfectly match the requirements for triggering the whip-sheath effect: because the tip barbs are denser and have less mass, they are more likely to form a violent swing similar to the tip of a whip during the high-speed movement of the vane when struck—the dense barbs reduce the terminal inertia, making the vane's return from "forward" to "backward" more rapid; the preset angle design of 40-42° further reduces the positive resistance between the barbs 3 and the airflow, making it easier for the barbs 3 to "shake off" the air during swinging, thus enhancing the energy release efficiency of the whip-sheath effect. The combination of the two, with the tip optimization section 23 serving as the "front-end drag reduction area", effectively reduces air resistance during the high-speed flight of the badminton shuttlecock, improves energy utilization efficiency, and optimizes the smoothness of the flight trajectory, ultimately achieving significant optimization of flight characteristics (such as speed maintenance and distance extension).

[0031] In one embodiment, such as Figure 1 As shown, the thickness of the base 21 is 0.25-0.3 mm, the thickness of the middle stabilizing part 22 is 0.2-0.25 mm, and the thickness of the tip optimization part 23 is 0.15-0.25 mm. Understandably, the thickness of the blade 2 adopts a gradually decreasing thickness design along its length, gradually thinning from the head to the tip. This helps to achieve a more uniform airflow distribution during the shuttlecock's flight, reducing vibration and instability factors, thereby improving flight stability. By adjusting the thickness of different areas, the aerodynamic characteristics of the shuttlecock can be optimized, improving controllability and allowing athletes to more precisely control the shuttlecock's trajectory. Specifically, the thicker area of ​​the base 21 ensures the structural strength and energy transfer of the initial hit; the thinner middle section balances rigidity and reduces redundant drag; and the thinnest tip section forms a streamlined drag-reducing profile.

[0032] In another embodiment, the simulated badminton shuttlecock feathers can also be a sandwich composite structure layer (not shown) disposed in the thickness direction of the feather 2. The sandwich composite structure layer includes a TPU outer layer, a piezoelectric ceramic fiber middle layer, and a carbon fiber skeleton inner layer. Understandably, the TPU outer layer provides high elasticity to buffer impact and efficiently transfer energy, the piezoelectric ceramic fiber middle layer enhances energy conversion and transfer efficiency (such as stably conducting mechanical energy to various parts of the feather 2), and the carbon fiber skeleton inner layer provides high-strength support to maintain structural rigidity. The combination of these three elements, while maintaining overall lightweight, improves the accuracy and utilization of energy transfer, and enhances durability through material complementarity (TPU weather resistance, carbon fiber fatigue resistance), ultimately improving the feel feedback and aerodynamic stability of the feather 2 during impact.

[0033] In one embodiment, multiple uniformly arranged biomimetic fish scales (not shown) are provided on the barbs 3 of the base 21, the middle stabilizing part 22, and the tip optimization part 23. Each biomimetic fish scale has a preset gradient chamfer on its edge, and the multiple scales form a unidirectional flow channel (not shown). Understandably, the biomimetic fish scales can guide the air to accelerate along the axial direction of the barb 3, reduce air resistance, and improve the flight speed and stability of the shuttlecock. By forming a unidirectional flow channel, the lift-to-drag ratio of the shuttlecock can be optimized, allowing it to maintain flight for a longer time and improving flight efficiency. The microscale turbulence generated by the gaps between the biomimetic fish scales helps to suppress the formation of large-scale separation vortices. Separation vortices can lead to energy loss and flight trajectory instability. By reducing separation vortices, the flight trajectory of the shuttlecock is more stable and its controllability is better.

[0034] In one embodiment, such as Figure 1 As shown, the surface of the biomimetic fish scale is provided with multiple evenly distributed aerodynamic adjustment holes (not shown). Understandably, the aerodynamic adjustment holes can adjust the air pressure distribution on the surface of the barb 3, guide part of the airflow to pass through the biomimetic fish scale in an orderly manner, promote boundary layer flow and adhesion, and reduce airflow separation. This structure works in conjunction with the unidirectional guide channel to reduce air resistance and improve airflow adhesion stability, ultimately improving the flight efficiency and trajectory accuracy of the badminton shuttlecock.

[0035] In one embodiment, such as Figure 1 As shown, the mass of the feather 2 is 0.12-0.15g; the width of the feather shaft 1 tapers towards the tip optimization section 23. Understandably, controlling the mass of the feather 2 within the lightweight range of 0.12-0.15g reduces flight inertial drag and improves striking response speed and flight efficiency; the aerodynamic design of the feather shaft 1 tapering towards the tip reduces airflow separation and optimizes the flow field distribution, while the forward shift of the center of gravity enhances flight stability. The combination of these two aspects ensures efficient energy transfer during striking and improves overall flight stability and smoothness through aerodynamic drag reduction and center of gravity control.

[0036] This utility model also provides a badminton shuttlecock, including the aforementioned simulated badminton shuttlecock feathers. The simulated badminton shuttlecock feathers include a shaft 1 and feather vanes 2 disposed on opposite sides of the shaft 1. The feather vanes 2 are arranged on the end of the shaft 1 away from the shuttlecock head. The cross-section of the feather vanes 2 gradually widens in the direction away from the shuttlecock head and gradually narrows in the direction closer to the shuttlecock head. The feather vanes 2 are made of polypropylene and ABS resin. The feather vanes 2 also include multiple barbs 3, which form a preset angle with the central axis of the shaft 1, the preset angle being 30-50°. The distribution density of the barbs 3 on the feather vanes 2 is 2-4 barbs / mm.

[0037] In this invention, multiple simulated badminton feathers constitute a shuttlecock. Through the ultra-thin feathers 2 with a gradually varying thickness design and the obliquely arranged barbs 3 with a density of 2-4 feathers / mm, multiple beneficial effects are achieved: when the shuttlecock is hit, energy is efficiently transferred along the length of the feathers 2, producing a crisp "sonic boom" in conjunction with the whip sheath effect; the dense barbs 3 provide friction buffering and disperse impact energy, preventing trajectory deviation and improving energy utilization and directional control accuracy; during return flight, the convergence and deformation mechanism, through the comb-like structure of the feathers 2, synchronously converges and the oblique arrangement of the barbs 3 compresses the windward area, reducing flight drag; the uniformly cut array of barbs 3, combined with the high strength and elasticity of the polymer material, significantly improves the shuttlecock's durability, flight stability, and hitting feel, meeting the stringent performance requirements of high-level players and enthusiasts.

[0038] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A simulated badminton shuttlecock feather, characterized in that, The device includes a rachis (1) and vanes (2) disposed on opposite sides of the rachis (1). The vanes (2) are arranged on the end of the rachis (1) away from the head. The cross-section of the vanes (2) gradually widens in the direction away from the head of the rachis (1) and gradually narrows in the direction closer to the head of the rachis (1). The vanes (2) are made of polypropylene and ABS resin. The vanes (2) also include multiple barbs (3). The barbs (3) form a preset angle with the central axis of the rachis (1). The preset angle is 30-50°. The distribution density of the barbs (3) on the vanes (2) is 2-4 barbs / mm.

2. The simulated badminton shuttlecock feathers according to claim 1, characterized in that, The vane (2) includes a base (21), a middle stabilizing part (22), and a tip optimization part (23) connected in sequence; the distribution density of the barbs (3) on the base (21) is 2 barbs / mm, and the preset angle between the barbs (3) on the base (21) and the central axis of the quill (1) is 45-47°; The distribution density of the barbs (3) on the central stabilizing part (22) is 3 barbs / mm, and the preset angle between the barbs (3) on the central stabilizing part (22) and the central axis of the feather shaft (1) is 43-44°. The distribution density of barbs (3) on the tip optimization section (23) is 4 barbs / mm, and the preset angle between the barbs (3) on the tip optimization section (23) and the central axis of the feather shaft (1) is 40-42°.

3. The simulated badminton shuttlecock feathers according to claim 2, characterized in that, The thickness of the base (21) is 0.25-0.3 mm, the thickness of the middle stabilizing part (22) is 0.2-0.25 mm, and the thickness of the tip optimization part (23) is 0.15-0.25 mm.

4. The simulated badminton shuttlecock feathers according to claim 2, characterized in that, The simulated badminton shuttlecock feather also includes a sandwich composite structure layer disposed in the thickness direction of the feather (2), the sandwich composite structure layer including a TPU outer layer, a piezoelectric ceramic fiber middle layer and a carbon fiber skeleton inner layer.

5. The simulated badminton shuttlecock feathers according to claim 2, characterized in that, Multiple uniformly arranged biomimetic fish scales are provided on the barbs (3) of the base (21), the middle stabilizing part (22) and the tip optimization part (23). Each biomimetic fish scale has a preset gradient chamfer on its edge, and multiple scales form a unidirectional flow channel.

6. The simulated badminton shuttlecock feather according to claim 5, characterized in that, The surface of the biomimetic fish scale is provided with multiple evenly distributed pneumatic adjustment holes.

7. The simulated badminton shuttlecock feathers according to claim 4, characterized in that, The mass of the feather (2) is 0.12-0.15g; the width of the feather shaft (1) gradually decreases in the direction toward the tip optimization portion (23).

8. A badminton shuttlecock, characterized in that, Includes the simulated badminton shuttlecock feathers as described in any one of claims 1 to 7.

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