Aerodynamic-Enhancing Attachment For A Beverage Can With Launch Capability
A device with a plurality of attachments for a beverage can which enhance the aerodynamics of the beverage can, comprising a base assembly adapted for attachment to a beverage can and a nosecone adapted for attachment to a beverage can. The base assembly further comprises a basal member, a peripheral sidewall, a guide unit, a central aperture, and a plurality of stabilizing units. The basal member further comprises an inner surface configured to follow the contour of a beverage can. The inner surface of the basal member contains a central aperture. The central aperture is surrounded by a divergent thrust nozzle, which focuses the beverage contents and increases the pressure of the liquid rivulet that is released. The heightened pressure of the beverage contents increases the thrust of the rocket during launch beyond what the thrust would be in the absence of the thrust nozzle.
The present disclosure relates to attachments to improve the aerodynamics of a cylindrical shape. The attachments allow a previously flightless object to be launched as a projectile. More particularly, this disclosure concerns attachments for a beverage can.
BACKGROUND INFORMATIONRockets made from the shell of aluminum beverage cans have become popular with model rocket enthusiasts. However, launching a beverage can previously required emptying the beverage can of its contents and converting the shell for use with fireworks, a compressed air launcher, or other method to propel the empty can.
SUMMARYThe exemplary embodiments describe a device having a plurality of attachments to reduce aerodynamic drag of a cylindrical object. In the exemplary embodiment the base section fits flush to the contour of the bottom of a beverage can. In another possible exemplary embodiment, a thrust nozzle may accompany the base section to direct beverage contents out of the bottom of the can through a central aperture.
The exemplary embodiments may be further understood with reference to the following description of the exemplary embodiments and the related appended drawings, wherein like elements are provided with the same reference numerals. The exemplary embodiments are related to a device having a plurality of aerodynamic-enhancing attachments to modify a beverage can for launch. This device allows a model rocket enthusiast to take advantage of the natural carbonation present in a beverage can and easily convert the rocket for flight without needing to dismantle the can. Throughout this description, the assembled device will be referred to as a “beverage can rocket.” However, it should be clear from the description that the beverage can component of the beverage can rocket may be substituted out for a different component.
It should be noted that the base assembly 1 illustrated in
In another example, the peripheral sidewall 3 is shown as having a series of ridges. These ridges are only exemplary and are not required. For example, the peripheral sidewall 3 may be a flat surface or may include any design.
The base assembly 1 is configured and of such size that the beverage can will be received into the basal member 4 and peripheral sidewall 3 to form a friction fit to secure the beverage can 1 within the base assembly 1. However, the friction fit is only exemplary and other methods of securing the base assembly 1 to the beverage can or vice versa may also be used. For example, an adhesive or other material may be used to secure the beverage can to the base assembly 1, the base assembly 1 may include a compression ring that is tightened when the beverage can is received into the base assembly 1, etc.
The base assembly 1 is configured such that central aperture 5 of the basal member 4 is generally centered on the end of the beverage can when the base assembly 1 is attached to the beverage can. As will be described in greater detail below, it is assumed that the beverage can will be punctured through the central aperture 5 to cause the under pressure contents (e.g., the propellant) to be released from the beverage can. By having the central aperture 5 centered on the end of the beverage can, the propellant may be released at the center of gravity of the beverage can rocket (e.g., the point in the beverage can rocket where the weight is evenly balanced). By having the propellant be ejected at this point, it is more likely that the beverage can rocket will launch and will be stable when it is flying.
In this embodiment the divergent form of the thrust nozzle 6 focuses the beverage contents (e.g., the propellant) through the thrust nozzle 6 toward the exhaust, thereby increasing the velocity of the stream of liquid that is released. This increased velocity augments the thrust of the beverage can rocket during launch. In a different exemplary embodiment, the thrust nozzle 6 could also be made longer than it appears in the illustration. In another exemplary embodiment, the thrust nozzle 6 may be moveably mounted to the basal member 4 such that the thrust nozzle 6 may be adjusted to provide thrust in a desired direction.
The base assembly 1 and the nosecone 11 may be made of the same or different materials. In one example, the base assembly 1 and the nosecone 11 are constructed of a plastic material by, for example, injection molding. In such an embodiment, each of the base assembly 1 and the nosecone 11 may be a unitary body. However, it is not required that the base assembly 1 and the nosecone 11 each be a unitary body. In addition, the base assembly 1 and the nosecone 11 may be constructed of different materials, metal, wood, composites, paper, cardboard, etc.
In one exemplary embodiment, the base assembly 1 or the nosecone 11 may also include a parachute such that the beverage can rocket may float down to the ground rather than come crashing down when it is out of fuel. This may allow the base assembly 1 and the nosecone 11 to be reused multiple times as they are less likely to be damaged when the beverage can rocket returns to the ground. In one exemplary embodiment, the parachute is located in the hollow portion of the nosecone 11. This arrangement would allow the beverage can rocket to come down in an upright orientation and avoid damage to the tip of the nosecone 11.
It should be noted that the diameter of the central aperture 5 and the puncture area may depend on the particular beverage can (e.g., absolute size, weight, diameter, etc.) and contents of the beverage can (e.g., energy drink, soda, beer, etc.). In addition, depending on the manufacturing process used to fill the beverage can, the pressure inside the can may vary. Other factors may also effect the can such as the temperature of the can inside a refrigerator versus being held at room temperature can affect the pressure inside the can and whether the can is shaken may also have an effect on the pressure inside the can. These factors may be considered when creating the size of the puncture hole (that will be made through the central aperture 5) in relation to the pressure inside the can.
In typical 250 ml sized energy drink embodiment, a puncture hole that is larger than 1 cm wide is generally too big in relation to the amount of pressure that can be generated inside the can. The contents of the can would spurt out but not at a regular or constant enough rate in relation to the can size to afford any stability or enough thrust to make a difference. A hole less than 1 mm wide also is negligible depending on the amount of pressure inside the can. A 1 mm hole cannot provide enough stability or thrust that would noticeably affect the can's trajectory or velocity on a 250 ml size can. Thus, in this embodiment, the size of the puncture hole (and the corresponding central aperture 5) should be in the range of 2 mm—less than 1 cm. However, a smaller can under high pressure may be affected noticeably by a 1 mm hole. In one embodiment, it has been shown that for a room temperature, shaken, carbonated beverage can being punctured and providing stability and thrust is in the range of 2 mm to 5 mm.
It should also be noted that the central aperture 5 diameter does not need to be exactly the same as the desired puncture hole. The central aperture 5 may be slightly larger than the desired puncture hole to allow the device that is puncturing the can to be inserted and removed.
It should also be noted that while the exemplary embodiments are described with reference to the contents of the beverage can being the propellant for the beverage can rocket, it is also possible to equip the beverage can rocket with a supplemental thrust source. The supplemental thrust force may be, for example, one or more Estes-type model rocket motors that may be included within the base assembly 1, may be strapped to the side of the beverage can, etc.
It will be apparent to those skilled in the art that various modifications may be made in the present invention, without departing from the spirit or the scope of the invention. Thus, it is intended that the present invention cover modifications and variations of this invention provided they come within the scope of the appended claims and their equivalent.
Claims
1. An apparatus, comprising:
- a nosecone configured to be coupled to a first end of a beverage can, wherein the nosecone comprises an inner wall and an outer wall, the inner wall including a lip around a circumference of the nosecone, the lip configured to couple the nosecone to the first end of the beverage can via a friction fit; and
- a base assembly configured to be coupled to a second end of the beverage can.
2. (canceled)
3. (canceled)
4. The apparatus of claim 1, wherein the base assembly further comprises:
- a basal member configured to enclose a second end of a beverage can;
- a peripheral sidewall configured to surround a portion of a sidewall of the beverage can when the base assembly is coupled to the beverage can; and
- a plurality of stabilizing units, coupled to the peripheral sidewall, wherein the stabilizing units are configured to create lift and stabilize the apparatus when in flight.
5. The apparatus of claim 4, wherein the stabilizing units have a trapezoidal shape.
6. The apparatus of claim 4, wherein the peripheral sidewall further includes a guide unit, wherein the guide unit extends from the peripheral sidewall in a radial direction with respect to the sidewall of the beverage can.
7. The apparatus of claim 4, wherein the basal member comprises a central aperture.
8. The apparatus of claim 7, wherein a thrust nozzle surrounds the central aperture.
9. The apparatus of claim 7, wherein an inner surface of the basal member is configured to follow a contour of the second end of the beverage can.
10. The apparatus of claim 7, wherein when the base assembly is coupled to the beverage can, the basal member is adjacent to an end of the beverage can, such that when the end of the beverage can is punctured the beverage contents are released through the central aperture.
11. The apparatus of claim 7, wherein the beverage contents that are released through the central aperture provide some of the thrust for the launch of the beverage can.
12. A base assembly configured to be coupled to a can, comprising:
- a basal member configured to enclose a second end of a beverage can;
- a peripheral sidewall configured to surround a portion of a sidewall of the beverage can when the base assembly is coupled to the beverage can; and
- a plurality of stabilizing units, coupled to the peripheral sidewall, wherein the stabilizing units are configured to create lift and stabilize the apparatus when in flight.
13. The apparatus of claim 12, wherein the stabilizing units have a trapezoidal shape.
14. The apparatus of claim 12, wherein the peripheral sidewall further includes a guide unit, wherein the guide unit extends from the peripheral sidewall in a radial direction with respect to the sidewall of the beverage can.
15. The apparatus of claim 12, wherein the basal member comprises a central aperture.
16. (canceled)
17. The apparatus of claim 5, wherein each of the plurality of stabilizing units include at least one flat side configured to allow the apparatus to stand in an upright direction such that the flat sides are at a bottom most position in the upright direction, wherein the at least one flat side is in a plane that is parallel to a radial plane of the beverage can and is displaced from the second end of the beverage can in a longitudinal direction.
Type: Application
Filed: Sep 2, 2016
Publication Date: Mar 8, 2018
Inventors: Brian Reyes (Minato), Bartosz Wysnzski (Hakataekimae)
Application Number: 15/255,225