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FFR VL-1 "The FlippiFin"
The excitement of military type folding fins! First vertical breech-launch Kit! Includes complete vehicle, parachute, and 36 inch launcher, Vehicle is 1.385 inches diameter x 28.5 inches long. Assembly required, of course. Rocket may come with elliptical or conical (shown) nosecone.
Complete Kit with Metal Fins and Kraft Breech Launcher
The Story Behind the FlippiFin
It was destined to be tube launched because of the folding fins, and so Bill started researching that possibility and then came up with a great adaptation, breech launched folding fin rockets, where the closed breech can actually increase performance. The first few launches were with D-12's and were a little squirrelly. Besides needing ballast (the fins are heavier than the usual fins) the friction in the tube was high enough to retard the force of the little D-12. He tried booster charges in the breech and gave that up as an imperfect idea. The E-30 flights were great.
The design has subsequently been changed to lighten the aft end of the rocket. The PVC coupler and tube was eliminated in favor of stock kraft tubing throughout. As a result less ballast is necessary for a stable flying vehicle and simulations show a 25% increase in altitude on the E motor. Lightening the airframe has also allowed the use of Estes Black Powder D motors for surprising flights.
|Aerocon Systems Co.||Warning: All liability waived! Rocketry
is an inherently dangerous undertaking.
Make your choices and take personal responsibility for the outcome of your experiment!
Protect your privelege to fly rockets by not making the headlines or becoming a statistic.