JPS5988173A - Sky flying disc with spoiller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a type of entertainment generally known as "Frisbee"("Frisbee").
Concerning a flying saucer called under the name (registered trademark).

This class of previously known devices is represented by several patents that can be summarized as follows. U.S. Patent No. 3,828.466 titled "Flying Saucer" filed August 16, 1974
The issue discloses a flying saucer that exhibits indented ripples on its inner underside to provide a "good hand grip." The shaping of these waves creates a corresponding bulge on the upper surface of the disc, but these are not provided for aerodynamic purposes and their effect is not described. The ripples can, of course, be formed without any apparent bulging on the upper side.

U.S. Pat. No. 3,939.602, entitled "Circular Aerial Glider," filed February 24, 1976, discloses a flying saucer having radial ribs and passages for airflow from the lower side to the upper side. .

U.S. Pat. No. 4,051,655, entitled "Aerodynamic Sound Generating Entertainment Apparatus," filed June 28, 1977, is similar to the above-mentioned patent in that it has an air flow path from the lower side to the upper side. Disclose a flying saucer.

A whistle is provided within the flow path that makes a sound while the device is in flight. In one embodiment, the whistle is provided in a bulge-shaped projection on the upper side, but is not provided for aerodynamic purposes.

U.S. Pat. No. 4,157,632, entitled "Aerial Toys," filed June 12, 1979, discloses a rippling or raised rib that "acts as a spoiler." The main feature of the claimed invention is that it comprises a flying saucer that is scallop-shaped and has a periphery that is provided with a small weight that is added to increase the moment of inertia of the device.

U.S. Pat. No. 4,216,611 entitled "Aerodynamic Toys," filed Aug. 12, 1980, discloses a flying saucer having radially located lips on its upper surface to act as a spoiler.

All of the above-mentioned patents are concerned with the maximum distance obtained after throwing;
It has a structure that in one way or another compromises the main and essential aerodynamic purity required for the best possible stability.

It is best when the cross-sectional shape of a circular flying saucer is defined by an arch-like or partial elliptical curve, and the disc is relatively thin in the cross-section adjacent to the axis of rotation and relatively thick in the cross-section adjacent to the periphery. It has been discovered that the performance can be obtained with the disc,
Proven by experiment.

Moreover, the presence of individual spoilers extending unitarily upwards on the upper surface of the disc increases the reach.

It has been found to provide improved stability.

The spoiler is preferably, although not essential, in the shape of a hemisphere and located at a suitable location on the upper side of the flying saucer.

Accordingly, it is a feature of the present invention to provide an entertainment device with increased reach and improved stability in the shape of a hand-thrown flying saucer. This improvement in reach results from three sources.

First, the upwardly extending (individual) spoilers form a thin layer of turbulent air across the upper side of the flying saucer, which in turn forms a thin layer of turbulent air across the surface of the disk and the air. Separate from laminar flow,
This reduces aerodynamic drag. Second, the additional small weight created by placing raised (individual) spoilers at or near the periphery of the flying saucer increases the angular momentum of the device, which increases the duration of one rotation. resulting in a disproportionate increase in Sixth, concentric annular rings of individual spoilers of various shapes are separated by variable equator circles that provide flow paths for circumferential airflow. These channels provide "anti-roll" and "anti-slice" performance, which reduces the time and distance of flight even when the device is thrown poorly by a novice to the sport. It helps to extend the.

Experimental proof of the above-mentioned effect was obtained using a prototype modified flying saucer. The results are attached as Table 1. This shows that the modified (bulged) flying saucer flies farther through the air than the original flying saucer in each of the six trials. Each throw was made at the same angle to the horizontal and with the same momentum.

Each trial consists of 10 throws of each type of flying saucer. Follow along, the total number of throws for the 6 trials is 6 o throws for the modified flying saucer and 6 o throws for the original flying saucer.
It was 120, consisting of 0 throws. The average wind speed during each set of 10 throws is as shown in the table.

For equal or equal average wind speeds, the modified flying saucer flew farther between +10.6% and +20.6% (Trial 1.2.3).

In trial A4, the headwind was on average 40% faster in throwing the modified flying saucer, which resulted in a reduced residual of -)-5.2%. Similarly, during the downward wind throw (trial 5.6), the tailwind was faster during the original device throw, but with a reduction in performance difference. Nevertheless, the modified embodiment allows both trials C5,6
), it still flew farther by +7.8%. Therefore, it seems reasonable to expect between 10% and 20% performance improvement in terms of airborne range due to changes made to flying saucers.

Preferred embodiments of the invention are described below with reference to the accompanying drawings.

The performance difference between the modified flying saucer and the original flying saucer can be displayed using a bar graph. Figure 1 shows
It clearly shows the change in performance in headwind trials, while the second
The figure shows the results of a tailwind trial. Wind speeds are also shown in these figures and must be taken into account when evaluating relative performance as described above.

Referring to FIG. 6, a top view of a modified embodiment of a modified flying saucer 30 is shown. The circular raised individual spoilers 32 are arranged in three annular rings at or near the periphery of the disc. Each ring is formed by a plurality of raised "bulges" in the shape of hemispheres evenly spaced around the periphery of each ring on the upper surface of the disc. Although the diameters of the individual spoilers are shown as decreasing along decreasing radii, similarly sized or differently shaped spoilers may be used for these purposes.

Furthermore, rings of fewer than six or more than three spoilers may be used. Indeed, the entire upper surface of the flying saucer may be used to install an annular ring, but this has been found to unnecessarily add weight to the device without further improving range. .

Still referring to FIG. 6, the top view of the device is shown as (
In this modified embodiment) at least one spoiler is shown to intersect any radius. Thus, a "staggered arrangement" of spoilers in adjacent annular rings provides maximum splitting of airflow along any radius. This provides a stable turbulent layer of air that acts as a "lubricant" between the surface of the disc and the laminar flow of air further from the top surface.

Referring to FIG. 4, the cross section of the device shown in FIG.
Indicates the existence of an equator in the finite that separates each annular ring of the spoiler. These equators (which may be variable) provide channels for circumferential airflow that improve the stability (and therefore range) of the flying saucer.

In FIG. 4, the translation of the disk 30 in the air is as indicated by arrow 44. Thus, the parallel streamlines 40, after initially deviating near the periphery of the flying saucer, approach the stagnation point 42, so that the air flowing over the top of the saucer 30,
The air flows under the disk. The spoiler 32 acts as a turbulence device in the manner described above.

-Referring to Figures 5A to 5E, several different shapes of spoilers are shown. These are raised, curved spines (5A) of variable but finite length.
(Fig.) and ``of a raised hemispherical shape of varying diameter.
``bulges'' (Figure 5B), raised cylindrical shaped ``bulges'' of varying diameter (Figure 5C), raised rectangular or square shaped spoilers (Figure 5D), and raised star-shaped ``bulges'' (Figure 5D). spoiler (Figure 5E).

Many other raised shapes can be formed but are not shown here.

Note that the cross section of the spoiler shown in FIGS. 5A, 5C, 5D, 2, and 5E may be changed to a rounded edge or a scalloped edge as shown in FIG. 5B.

Finally, in FIG. 6, a removable and replaceable spoiler 60 is shown.
is an associated recess 62 provided in the upper side of the flying saucer.
It may also be held in place by friction. That is, the user:
Different shapes can be tried using different sets of spoilers of different shapes and sizes.

Other embodiments within the scope of the claims are possible in the art.

[Brief explanation of drawings]

Figures 1 and 2 are bar graphs of the results of field trials; Figure 6 is a possible configuration of the modified flying saucer showing a possible arrangement of individual spoilers and some streamlines and gold. plan view of
FIG. 4 is a cross-sectional view of the disc of FIG. 3 also showing the deformation of the air flow; FIGS. 5A to 5E are isometric, plan and cross-sectional views of various spoiler shapes; FIG. 2 shows a cross-sectional view of the disk of FIG. 1 with individual removable spoilers; FIG. 30...Flying saucer 32...Individual spoiler lifted up 60...Exchangeable spoiler agent Akira Asamura 4 people Figure 3 Figure 6 Doo 6 Procedure amendment (method) 1988 3 May 11th, Mr. Commissioner of the Japan Patent Office 1. Indication of the case Patent Application No. 194476 of 1982 2. Title of the invention A 3 Kui Hibiki Yabu 1 Assignment 3. Person making the amendment Relationship to the case Address of the patent applicant 4 , Agent 5, Date of amendment order February 22, 1980 8, Contents of amendment as attached.

Claims (9)

[Claims] (1) A flying saucer or saucer entertainment device or saucer sports device having a plurality of raised individual spoilers of various shapes or sizes on the upper side of the saucer. 2. The disc of claim 1, wherein the individual raised spoilers are arranged in an annular ring on the upper side of the disc. 3. The disc of claim 1, wherein the individual raised spoilers are provided at or near the periphery of the upper surface of the disc. (4) The disk according to claim 1, wherein the individual raised spoilers are arranged over the entire upper surface of the disk. 5. The disc of claim 2, wherein said raised individual spoiler annular rings are separated within a finite proportion of varying or equal widths. (6) Each annular ring has individual raised spoilers of a size or shape that vary evenly apart around a 660° arc formed by the radius of the ring. disk. (7) The disk according to claim 2, wherein the positions of the individual raised spoilers in the adjacent annular rings are staggered with respect to each other such that the positions of the individual raised spoilers are adjusted to an arbitrary radius and find at least one spoiler. . (8) The disc of claim 2, wherein the dimensions of each spoiler decrease with decreasing radius. (9) The disk according to claim 2, wherein the number of annular rings is one or more. 3. The disc according to claim 2, wherein α [the annular ring is arranged at or near the periphery of the disc. 2. A disc according to claim 1, wherein the individual spoilers are removable, have variable shapes and dimensions, and are freely convertible in sets or individually.