Abstract: In some aspects, the disclosure is directed to methods and systems for determining ballistics of golf balls in different atmospheric conditions. The system can receive a set of characteristics for a plurality of golf swings of a golf ball under baseline atmospheric condition. The system can generating a player profile comprising an average of each of the set of characteristics for the plurality of golf swings. The system can identify a second atmospheric conditions different from the baseline atmospheric conditions. The system can calculate a predicted distance traveled by the golf ball if hit by a golf swing under the second atmospheric conditions. The system can present, in a graphical user interface, the predicted distance traveled by the golf ball under the second atmospheric conditions.

Abstract: A three-dimensional fluid simulation method is disclosed wherein: a first mesh of a flow domain non-uniformly split with respect to each of three degrees of freedom is defined; a second mesh uniformly sprit with respect to only one of the three degrees of freedom but non-uniformly with respect to other two degrees is defined; an object model is set in the first mesh and a motion equation is formed and calculated to obtain fluid velocity; based on the fluid velocity, flow imbalance is computed for each cell; based on the flow imbalance, fluid pressure correction equation is formed; the flow imbalance is mapped onto the second mesh and the fluid pressure correction is computed; the fluid pressure correction is mapped onto the first mesh; and until the flow imbalance and motion equations are converged the computation is repeated.

Abstract: A golf ball trajectory simulation method is provided. The method includes setting up a golf ball model within a virtual airflow space where a grid has been generated and setting a weight for the ball model and applies initial conditions (initial velocity, launch angle, spin rate) to the ball model so as to cause the model to fly within the virtual airflow space. The method further includes calculating the lift coefficient and the drag coefficient for the golf ball from the air stream velocity, the direction and pressure in each grid cell, and the flight distance and left-to-right dispersion for the golf ball from launch until landing by calculating, at predetermined short time intervals, the change in height, change in lateral direction, change in velocity and change in spin rate for the golf ball during flight.

Abstract: Golf balls with a reduced flight path are disclosed. In some cases, foam incorporated into a middle layer increases impact absorption and reduces a ball's flight path. In other cases, a dimple pattern may be selected to reduce a ball's flight path. In other instances, a parachute or other drag inducer may be deployed as a result of striking the ball to induce drag and minimize the ball's flight path.

Abstract: The invention is directed at a golf ball trajectory simulation method which sets up a golf ball model within a virtual airflow space where a grid has been generated, sets a weight for the ball model and applies initial conditions (initial velocity, launch angle, spin rate) to the ball model so as to cause the model to fly within the virtual airflow space, then calculates the lift coefficient and the drag coefficient for the golf ball from the air stream velocity, direction and pressure calculated in each grid cell, and calculates the flight distance and left-to-right dispersion for the golf ball from launch until landing by calculating, at predetermined short time intervals, the change in height, change in lateral direction, change in velocity and change in spin rate for the golf ball during flight.

Abstract: A golf training aid which incorporates a standard golf club, with a Nerf golf ball or a whiffle golf ball, and a target which is hung on the wall at adjustable heights, the target having a backboard removable secured to the wall, a face board positioned forward of the backboard, the face board having an aperture there through, the aperture in communication with a cavity positioned between said face board and said backboard for the collection of a Nerf golf ball or whiffle golf ball whose trajectory from the golf club has carried it through the aperture and into the cavity.

Abstract: A golf training aid which incorporates a standard golf club, with a Nerf golf ball or a whiffle golf ball, and a target which is hung on the wall at adjustable heights, the target having a backboard removable secured to the wall, a face board positioned forward of the backboard, the face board having an aperture there through, the aperture in communication with a cavity positioned between said face board and said backboard for the collection of a Nerf golf ball or whiffle golf ball whose trajectory from the golf club has carried it through the aperture and into the cavity.

Abstract: A golf putting practice device and ball is provided, wherein the ball has a flat end and a friction face which allow the putting practice ball to slide across the level putting surface of the putting practice device. The specific coefficient of friction provided by the friction face of the putting practice ball reduces the speed and the distance the putting practice ball travels over a putting surface of the putting practice device. This allows a golfer to practice a complete range of putts on a conveniently sized portable device.

Abstract: Putting is a very important factor in golf playing. Above all, a putting distance feeling is the hardest to master, and many rounds in golf courses are said to be required for improving putting. Nevertheless, a putter mat is normally only 2- to 3-m long, and a carpet surface or the like that offers the same rolling as by golf greens is hardly available. Many smooth floor surfaces found in homes and firms cannot be used for putting practice due to excessive rolling of golf balls. It is an object of the present invention to eliminate these drawbacks. A ball implement for practicing golf putting is invented which includes a disc provided at the center thereof with a hole, and a main body having a cylindrical portion.

Abstract: A training golf ball apparatus designed to imitate the realistic feel, weight, acoustic and flight characteristic of a real (regulation standard) golf ball, to allow a golfer to practice the sport in a realistic way safely at home, includes mechanized flights concealed within a cavity of the golf ball; a lightweight ball component and a magnetized tee. The device will perform as well as a standard golf ball; give accurate feedback on performance and promote realistic training in the home environment. The device provides the illusion that a lightweight golf ball is of standard weight when it is placed on a tee. For safety reason, the training golf ball apparatus changes aerodynamic properties once leaving the golf tee, and behaves as a lightweight, high aerodynamic drag object once airborne.

Abstract: A training golf ball apparatus designed to imitate the realistic feel, weight, acoustic and flight characteristic of a real (regulation standard) golf ball, to allow a golfer to practice the sport in a realistic way safely at home, includes a mechanized shuttlecock; a lightweight ball component and a magnetized tee. When arranged functionally, the device will perform as well as a standard golf ball; give accurate feedback on performance and promote realistic training in the home environment. The device is engineered in such a way to give the illusion that a lightweight golf ball is of standard weight when it is placed on a tee. For safety reason, the training golf ball apparatus changes aerodynamic properties once leaving the golf tee, and behaves as a lightweight, high aerodynamic drag object once airborne.

Abstract: A kit containing all the materials necessary to assemble a putting and chipping training unit that may be used in total darkness since a putting cup, golf balls, and direction labels for a golf club head are all equipped with phosphoric markings that glow in the dark for about eight hours before recharging is necessary by light exposure.

Abstract: A kit containing all the materials necessary to assemble a putting and chipping training unit that may be used in total darkness since a putting cup, golf balls, and direction labels for a golf club head are all equipped with electrophoretic markings that glow in the dark for about eight hours before recharging is necessary by light exposure.

Abstract: A water golf game comprising at least one floating portable green surrounded by at least one floating circle is disclosed. The floating green has a circle that sits on top of the green or is molded into the green. Both the floating circle and the circle on the green have lights so the game may be played at night.

Abstract: A golf game with a three dimensional target that utilizes hook and loop material. The game includes a club, a ball, a mat, and a three dimensional target. The ball and the three dimensional target have a hook and loop material (commonly referred to as Velcro®) affixed to them such that when the ball comes in contact with the three dimensional target, the ball will remain in position on the three dimensional target. The three dimensional target commonly is a cylinder with a hook material attached. A padded cushion can additionally be placed between the three dimensional target and the hook and loop material to buffer the contact between the ball and the three dimensional target. The ball has a material of a loop type surrounding it such that it will stay in position on the target as it contacts the target.

Abstract: A golf game is played with a standard golf club in and around a swimming pool having a surrounding deck. The game contains a floating green made of a sheet of floating foam having a cross-sectional area of at least about 10 square feet with an upper surface covered with a loop-type fabric upper surface. The game also contains a plurality of floating golf balls covered with a hook-type fabric. The game is played by hitting the floating golf balls with the golf club from the deck to the floating green in the pool.

Abstract: A playground golf course with an artificial turf, the greens of which are formed by disposing a thin resilient urethane foam layer below the artificial turf so as to reduce golf ball bounce and hence roll on the artificial turf. Greens are formed by disposing a polyethylene buffer below the thin layer and disposing a green boundary edge member composed of an artificial turf belt member around the artificial turf. Greens are also formed by tensioning predetermined portions in the vicinity of the periphery of the artificial turf with springs. The playground golf course is formed by disposing a plurality of greens formed in such a manner in an existing athletic facility. The playground golf course is composed of the greens, a golf club with two club heads formed at both ends of a shaft, a golf ball with reduced flight characteristics, and a golf tee that allows players to easily hit golf balls.

Abstract: A simulated golf game including a substantially reduced size course in which each "hole" (10) and its respective tee marker (40) is separated from each other by a minimum of about fifty (50') feet and a maximum of about one hundred and fifty (150') feet for "holes" having pars "3" to "5" (FIG. 7), that can be played, for example, in the yard of the user, including regulation size balls (20) that are of relatively light weight; "holes" in the form of, for example, relatively large, outer diameter [e.g. twenty (20") inch] and relatively large, inner diameter [e.g. fifteen (15") inch] ramp rings (10, FIGS. 1A & 1B) substantially spaced about on the ground, each having an easy-entry/reluctant-exit hoop configuration; miniature flags (30, FIGS. 3A-C) associated with the "holes", and tee markers (FIGS. 4A-4D) and tees. The ball has an effective "maximum" range of about fifty (50') feet and is formed of an aerated, hollow, plastic hemisphere with a weight of about a tenth (0.1 oz) of an ounce.

Abstract: A miniature golf game that utilizes hook and loop material commonly referred to as VELCRO to capture a ball rolled onto a green. The game includes a miniature green that has a simulated hole covered with VELCRO material. The VELCRO material can either be sewn into the green or attached to a disk that is placed onto the hole. The green may also have a sandtrap patch that has VELCRO material. A VELCRO covered ball is rolled onto the green with a golf club. The golf ball becomes attached to the simulated hole or patch when the ball is rolled into the simulated hole or patch areas. There is also disclosed a hook and loop baseball game that includes a miniature field which simulates a baseball diamond. The baseball game has a plurality of VELCRO covered disks located throughout the field. A player throws a VELCRO covered ball at the disks on the field. A disk is removed from the field when the ball strikes the disk. Each removed disk may represent a single, home run, out, etc.