03-25-2019, 12:30 PM
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Banned
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Join Date: Mar 2005
Location: Raleigh, NC Area
Posts: 1,743
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Quote:
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Originally Posted by LeeR
I’ve had pretty good luck surface mounting basswood fins, but here is an idea for use on the 24mm powered booster on the Farside-X. These pictures are from a post by Gary Rosenfield, showing a neat method he used to enhanced the surface mounting of fins for a minimum diameter rocket.
As I recall, a piece of masking tape was applied inside the tube to prevent leakages of epoxy, then removed once it started to set up.
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Lee,
The first time I ever saw that fin attachment method was at NARAM-19, Kansas City, 1977 . . . Gary Rosenfield was the builder and it was a minimum-diameter rocket, flown on an "undisclosed motor" during the Manufacturer's Demo.
Whatever the motor was, the orange-ish flame was longer than the rocket, with highly-visible mach diamonds, and the rocket "disappeared in an instant" off the pad at ignition . . . G. Harry Stine was "having a conniption fit", as RSO . . . LOL !
Jerry Irvine calls that method the "Interlap Attach" in his "Advanced Information Report # 10" / " Advanced Construction Methods" ( AIR-10 ). ( Image below ).
Dave F.
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