US20040147180A1

US20040147180A1 - Paddle aqua-glider used to propel floats, reach remote places and objects, survey rescue in water

Info

Publication number: US20040147180A1
Application number: US10/350,051
Authority: US
Inventors: Vladislav Gorshkov
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-24
Filing date: 2003-01-24
Publication date: 2004-07-29

Abstract

Oar, ancient propulsive mean is known many hundreds years ago and is not exchanged until now. Here is offered a new paddle device—a paddle aqua-glider able to exchange oars partially and it is able to expand applicability of manual paddle means much far. The paddle aqua-glider combines ability to glide forward with ability to rise up and to function as a paddle when backward force (such a cord tension) applied to it.

If here is no need to propel floating mean then the paddle glider can function in fleeing mode of operation that requires slackening and elongating the cord tied to the glider for it keel rear edge. This allows the glider to glide away forward freely in each cycle and to reach any desired distanced place or object on its way delivering help or something needed. It can also provide remote survey, rescue, hunting, seizing, etc.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The invention has no analogues.

STATEMENT REGARDING FEDERALLY SPONSORED R & D

The author created the invention by himself with own means in duty free time.

REFERENCE TO A MICROFICHE APPENDIX

Not Applicable.

BACKGROUND OF THE INVENTION

About Oars.

Until now the only oars are well known as the ancient paddle mean driven manually.

It seems, as the oars will never vanish out off human activity. However, the oars using requires a float to be of special form like a boat, an oblong raft and soon usually equipped with rowlocks. We can not use it when swimming or diving. We can not use it when we are on ice floe. We do not know diverse usage of the oars.

Endeavor:

Here we offer new type of paddle mean sharply changing its capabilities and methods to use it. Also it opens new opportunities of usage the same device in variety practical cases. The paddle device is designed as a paddle aqua-glider linked with a user through a cord, a cable, a string or a fishing-line.

As a glider it is able to outset itself far enough from an user, but as a paddle it is able to stay steady similar to an anchor when the user or a rower pulls the a cord back. Owing to design the paddle glider raises up when the user pulls it with the cord.

If the user does not paddle (for example stays on the shore) he slacks away a part of the cord to give freedom to the paddle glider, which glides far utilizing potential energy obtained at its rising time. After multiple repetition of described process the paddle glider gets any place on its way delivering itself as help or something needed.

BRIEF SUMMARY OF INVENTION

The general idea of the claimed invention is usage repeatable recombination of forces applied to the aqua-glider in order to set it in paddle mode of operation rising it to take potential gravity energy providing for next cycle moving forward. The recombination of forces is accomplished by pulling and slacking the cord attached to the paddle glider keel.

If the cord is of constant length than the user is a rower paddling with the paddle glider relocating forward with each cycle. If the cord increases in its length then the user is rather an operator remotely enforcing to move forward to new location or to a remote object to contact or interact with it.

The paddle glider can be of different size and so be used for different purposes individually or collectively (by a group of people).

BRIEF DESCRIPTION OF SEVERAL VIEWS OF DRAWINGS

FIGS. 1, 2, 3. Paddle aqua-glider (front, right side and bottom views).

FIG. 4. Aqua-glider uniformly slides down under gravity G and hydrodynamic pressure P.

FIG. 5. A lock mechanism integrating a keel and a hydrofoil to a paddle aqua-glider.

FIG. 6. State balancing three basic forces: gravity G, hydrodynamic pressure P and tension D.

FIG. 7. Paddle aqua-glider describes looking-like-a-saw path under repeatable recombination of applied forces caused by periodical zeroing force D.

FIG. 8. Common diagram for forces applied to the paddle aqua-glider.

FIGS. 9, 10. Centralized forces balance diagrams for small and great tension force D.

FIGS. 11, 12. A paddle aqua-glider able to collapse for convenient transportation, storage.

FIG. 13. A rower uses a paddle aqua-glider to propel a boat.

FIG. 14. A winter fishermen propels a broken off ace floe with a paddle glider.

FIG. 15. A rescuer directs a paddle aqua-glider to a drowning man.

FIG. 16. A paddle aqua-glider rigged with a TV camera and a hermetic electric light.

FIGS. 17,18. A paddle aqua-glider rigged with some tool: harpoon, awl, hook, gaff etc. (side view and a view of up right movement caused by tension D>0).

FIG. 19. Under water (under ace) remote survey with a paddle aqua-glider rigged with a TV camera and a hermetic light.

NUMERIC SYSTEM SIGNING ELEMENTS

AND PARTS OF SYSTEMS

Tens	Units

0:0	1- rounded edge,	2- foil (wing),	3- attachment,	4- keel,
_:5- sinker,	6- nest,	7- latch,	8- cord,	9- eye,
1:0- keel root,	1- flat spring,	2- screw,	3- hinge,	4- pillar,
_:5- stopper,	6- boat,	7- paddle glider,	8- ice,	9- plate,
2:0- ware,	1- hermetic tube,	2- channel,	3- TV camera,	4- canopy,
_:5- hermetic light,	6- tool seat,	7- pike,	8- ice-hole.

Letter's Denotes: [0029]
α—tension deflection angle, σ—tension inclination, ν—paddle glider inclination, F—angle opening, β—gravity angle, XY—coordinate system, P—hydrodynamic pressure force (head), D—tension (pulling force), L—lifting force, G—gravity force, T—free gliding thrust, E—distance between gravity center and an eye, R—distance between gravity center and the eye center, A—eye center, O—gravity center, C—hydrodynamic head center, V—velocity of propulsion, V[0030] 1—rising velocity, V2—gliding velocity.

DETAILED DESCRIPTION OF INVENTION

1. Conception. Claim [0031] 3)
The paddle aqua-glider combines two its abilities: first, to glide translationaly under gravity force; second, to be orient cross its gliding, to rise up and to function as a paddle under tension applied to it through taut cord. This type of operation is named as paddling mode of operation. The cord length is not changed here. If there is no necessity to paddle then paddle functioning is not used. And we have two other modes of operation. [0032]
If after rising up the paddle glider returns to initial position by water surface by pulling it back with the tension the mode of operation is named as hovering mode of operation. A man (operator) slackens but does not elongate the cord and the paddle glider slides forward again to the same remote position. Process is repeated and the paddle glider accomplishes closed cycle of motions around the same place. It can be used for fishing if the paddle glider is rigged with fishing hook and it is small enough. [0033]
If after rising up and cord slackening the paddle glider instantly slides forward to new remote position then the mode of operation is named as fleeing mode of operation. The man elongates the cord by loosing it from a bobbin or a coil. [0034]
2. Design and Description of Work for the Paddle Glider. [0035]
The paddle glider is very simple device (FIG. 1). It consists of a foil or a [0036] wing 2 connected to a keel 4 with attachment 3. It is not obligatory but some time it is desirable to disconnect the wing 2 and the keel 4 in order to pack the paddle glider when it is stored or transported. As we see (FIG. 1, FIG. 2, FIG. 5), the keel can be removed from the nest 6 by sliding it out predetermine unlocking it with the latch 7 fixed to the wing 2 with the flat spring 11 (FIG. 5). Sliding directions are shown with the arrow M. The keel holds a streamline sinker 5.
If we suppose that the glider weight is concentrated in the [0037] sinker 5 then the glider has two basic forces: gravity G and lift L that are balancing each other. For gliding it is needed that the hydrodynamic pressure P force (perpendicular to the wing plane) and the gravity force G should not be coincide and the gravity force needs to be shifted forward as shown by FIG. 2. In this case the glider takes forward inclination β (FIG. 4) when it is released and starts gliding.
The hydrodynamic force P is resolved into components L (lift) and T (thrust). The lift L equilibrates the gravity force G while the thrust T overcomes a hydrodynamic resistance force and moves the device with velocity V[0038] 2 (if the cord 8 is not taut).
A man pulling the [0039] cord 8 with the force D overturns the paddle glider orienting it cross to the cord line 8 (FIG. 6). This creates hydrodynamic head P. The horizontal component of it is the desired thrust propelling the floating mean. (claim 1) This component equilibrates horizontal component of the force D. Also sum of vertical components of the forces P and D is the lift L equilibrating the gravity force G. Here we see the simplest case when the forces L and G are coincide on the line.
In paddling mode operation the tension D (FIG. 7) enforces the glider also to rise up with velocity V[0040] 1. (claim 2) Zeroing the force D allows the glider first to speed up then to glide with some velocity V2. The new repetition of the force D revives the described process of the paddling mode of operation. It is clear that the velocity V2 is greater than the velocity V of some float propelled with the paddle aqua-glider.
3. Theoretic Basics and Numeric Example. [0041]
The theoretic basics allows to link and to understand the paddle glider behavior with its geometrical parameters, direction and volume of acting forces (especially the tension D). For consideration we have three the most important dots: O—gravity center, C—hydrodynamic head center, A—center of tension application. Also the very important center is the side-stabilizing center S. [0042]
To find the center of gravity O we can hang the paddle aqua-glider with string sequentially for the center A then for the center C. Lines continuing the strings along the keel plane are crossing at the gravity center O. Distances AO and CO represent constant eccentricities E and R. [0043]
If the paddle glider moves uniformly and does not change its angle position then it is in balance state where the vector sum of all force moments is zero and the vector sum of all forces acting on the paddle glider is also zero. [0044]
Sum of the forces P and D projections on the axis X is equal zero, so we have: [0045]
P·sin ν−D·sin σ=0. (1)
Sum of the projections of forces P and D on the vertical axis Y, the force gravity G is equal zero: [0046]
P·cos ν+D·cos σ−G=0. (2)
Because the angle σ and drag force D are supposedly known (easy measured) then equations 1 and 2 give an expression finding the angle ν of the paddle glider inclination: [0047]
tan ν=D·sin σ/(G−D·cos σ). (3)
After finding the angle ν we can find the force P from the equation 1: [0048]
P=D·sin σ/sin ν. (4)
For our example σ=82.5°, so sin σ=0.99, cos σ=0.13. If G=1.5 Kg and D=5 Kg then according the [0049] equation 3 we have tan ν=0.99·5/(1.5−5·0.13)=4.2. So ν=76.5° or ν=1.337 radians and sin ν=0.9728. It gives P=5·0.99/0.9728=5.088 Kg.
Now we can find also the tension deflection angle [0050]
α=ν+σ−F. (5)
In our example F=127°. So α=82.5°+76.5°−127°=32°. Thus the paddle glider picture (FIG. 8) should be turned anti clockwise for 12° additionally because it is depicted originally with the angle α=20°. [0051]
4. Collapsibility and Stabilization. [0052]
The paddle glider can be made collapsible (FIG. 1, FIG. 12). For that its [0053] wing 2 and sinker 5 are connected (instead a keel) with streamlined pillars 14 and hinges 13. Working state is fixed with the stopper 15 depriving the hinges its mobility. The rear pillar carries a plate 19 working as a side stabilizer. All others designs uses the keel 4 also as a stabilizer.
It is very important that the side pressure center S must be behind the gravity center O. Otherwise the paddle glider looses orientation and right direction of gliding. [0054]
5. Applications. [0055]
5.1. Propulsion. [0056]
The [0057] paddle glider 17 can be used effectively as propulsive mean in many cases where others can't. For example, rowing a boat (FIG. 13) in narrow place or in case of emergency. By the way, because of small size the paddle glider should be used in every boat as a spare paddle.
It is not difficult to imagine how a swimmer or an underwater swimmer can use the paddle glider for accelerating his swimming. Some times it is more effective than feet flippers. Till this moment we were powerless when we try to row on an ice floe or on a raft. The paddle glider is the best solution for this case (FIG. 14). [0058]
5.2. Rescue. [0059]
A rescuer uses the paddle glider in fleeing mode operation (FIG. 15). He repeatedly looses a cord elongating it every time after pulling taut. When the paddle glider reaches a drowning person the last one should seize it. The rescuer then pulls it out off water together with the drowning person. [0060]
5.3. Special applications. [0061]
The paddle glider can be rigged with different tools providing additional functionality to it. It can be rigged with a hermetic light and TV camera (FIG. 16) and be used for survey under water spaces (FIG. 19) in criminal or industrial cases. Here the cord should be exchanged with the thin but strong cable delivering video signal. [0062]
The other application is a flexible remotely acting, harpoon, hook or a gaff (FIG. 17). Repeatedly pulling the cord a user bring the paddle glider closer to a floating object. At last moment when the paddle glider has approached to the object beneath of it the user should sharply pull cord enforcing the paddle glider to turn and rise up very fast (FIG. 18). The [0063] pike 27 sticks into the floating object (a log, a shark, a raft etc.). Now the user can deliver it to him.

Claims

What I claim as my invention is:

1. Method using a aqua-glider as a paddle based on application of cord connected to rear edge of the aqua-glider keel; the cord tension orients the aqua-glider by its wing cross the cord line in each tension cycle and it experiences impulsive forward reaction—water resistance of aqua-glider wing treated as propelling thrust; the aqua-glider also rises up when the cord is taut and it glides away from gotten height to new position when the cord is slackened.

2. Method enforcing aqua-glider to get initial height reviving glide process and based on cyclic application of impulsive force to the aqua-glider keel rear edge backward that overturns the aqua-glider by its wing cross the force direction and lifts the aqua-glider up to the initial height.

3. Aqua-glider alternatively gliding away and rising up to initial height due to impulsive force cyclically applied backward to the aqua-glider keel rear edge mainly with taut cord connected to it and overturning the aqua-glider by its wing cross glide direction as a paddle; as a result the aqua-glider is able to work in three modes of operation:

paddle mode providing cyclical impulsive thrust for a floating mean, which a user applies the aqua-glider from keeping constant the cord length;

fleeing mode when the aqua-glider glides away to a distanced place or object for help, surveying, hunting or seizing; in this case the user elongates the work part of the cord;

hovering mode displaying the aqua-glider cyclic motion about the same place without advance; each cycle the aqua-glider returns to initial position by water surface starting glide repetition.