There is one outstanding safety issue in Rocketry Golf. I make it $150 – 200 for a round – not counting the green fees, of course. However, the E engines required for teeing off on the par-five holes cost $18 each. The bulk price for the smaller engines is about US$3 each, which isn't too bad. If two rocket shots are needed on average to reach the green, 36 rocket engines would be needed for the round. He claims it is adjustable to half a degree accuracy in both elevation and azimuth.Īn 18-hole round of Rocketry Golf would be a costly venture. While there are many possible solutions to this requirement, (Frost's company) makes available a precision launcher that mounts to a camera tripod for portability.
The official Rocketry Golf Az-El launch padĪside from the accurate and reliable design of the rockets, playing a good game of Rocketry Golf depends on having a solid and easily adjustable launcher. Still, depending on the engine size, the launch angle, and the ejection delay, the FB-1 can be used for shots from 350 yards (320 m) to 4 yards (3.6 m). Peak accelerations for the FB-1 are in the range of 10 – 20 g's. The launch weight for the FB-1 is perhaps one to one and a half ounces (28 – 42 g) smaller than the FB-3, but this doesn't quite make up for the smaller thrust. These engines have total impulses from 1.25 to 10 N-sec (0.3 – 2.25 lb-ft/sec) and peak thrust in the range of 8 to 15 N (1.8 – 3.4 lb). The main difference is the engine mount, which is sized to take model rocket engines from 1/2A to C class. The FB-1 is somewhat smaller with a 14 inch main tube, but otherwise has similar construction to the FB-3. The Rocketry Golf rockets have a piston-type recovery ejection system, which do not scatter paper wadding around the golf course. The total launch weight of the FB-3 is roughly 100 – 130 g (3.5 – 4.6 oz.), so the peak acceleration of the rocket is in the range of about 30 g's, and the total range varies from about 200 – 600 meters (220 – 660 yds), depending on the thrust curve of the engine, the angle of the launcher, and the delay time before an ejection charge expels a small parachute and a streamer to insure a soft landing.
This substitution for a real golf ball both avoids balance problems and launching something that could cause serious injury if a rocket went off course. A hollow plastic golf ball with a diameter of 44.5 mm (1.75 in) takes the place of the nose cone. This increases accuracy and consistency of the golf course launches. There are three basswood fins, which are sanded into airfoils that provide an asymmetric lift to spin the rocket along its axis. The FB-3 has a main tube of spiral-wound paper an inch (25.4 mm) in diameter and 17 inches (43 cm) long. The FB-3 takes D or E model rocket engines, having peak thrust of about 25 - 35 Newtons (5.6 - 7.4 lb) and total impulses of 20 and 30 N-sec (4.5 and 6.75 lb-ft/sec). National Association of Rocketry (NAR) safety rules. The construction materials for both rockets are lightweight and nonmetallic, in accord with the U.S. The first video below shows highlights of this short match. They played four holes ranging from 157 to 527 yards (144 - 482 m), and Frost managed three over par to beat Lowe and tie Gulo. The first game of rocketry golf was played in 1989 between Frost (nicknamed "Frog Dust" in rocketry circles) and golf pros Jack Gulo and John Lowe. The rockets are used to launch the ball onto the green, where the traditional putter comes back into play. Frost's rocketry golf replaces your golf clubs with a selection of rockets and a putter. Unfortunately, Doug isn't much of a regular golfer, and two-putted in for a birdie. Not fazed by the uphill approach shot to the green, he placed his tee. Then he launched his ball (on the nosecone of a model rocket) from the tee of the par-five 433-yard first hole at the Ridge Golf Club in Auburn, California. "FORE!! Three - Two - One - Fire!" called Doug Frost, inventor of Rocketry Golf and Manager of the Rocketry Golf Organization.
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