For 1999-2002 Nostalgia Model Sailplanes

From Jack Iafret, "Keeper of the Rules"
These are the ORIGINAL RULES before the AMA created this competition catagory, 461 (NOS).

  1. Design Release Requirements:

    • Date of Release:
      The latest accepted magazine or book date for the published design *, or the release of a kit will be January 1, 1980.
      If the kit or published design had several release dates that included modifications to the design, only those prior to January 1, 1980 will be accepted.

      Models that have been kitted, but where there is no date on the plan or on the instructions, an advertisement in a dated magazine or book can be used for dating of the design.

    • Clarification:
      If the plan used for construction and documentation was published in a book or magazine, all of the parts of the plane must be scaleable and buildable from the plan. the aircraft construction must be detailed, and not just a 3-view. this is especially important for the shape of the airfoil if it is not from a published set of coordinates.

  2. Airframe Requirements:

    • Items that Must Duplicate the Original:

      1. The plane must replicate the original styling and appearance and comply with the vision of the Nostalgia event (Vision is stated under Special Items).

      2. Airfoil, flying surfaces plan forms, moments and surface areas.

      3. Fuselage form or styling in outlines both in side and plan views.

      4. Basic construction... i.e. open bay wing structure, wood vs. FRP etc.

    • Items that Can Deviate from the Original:

      1. Control surfaces... if desired, on a plane with no glide control capability, spoilers may be added to the upper wing surface as long as the plans do not call for any other glide control device. If the plans have a glide control system, it must be the one used and shall not be deviated from.

        If spoilers are added, they must be designed to minimize the affect on the styling of the original aircraft. (An example would be on an open structure wing; the spoiler system must be of minimal dimensions including the area around the spoiler bay used to attach the covering.)

      2. Any interior, non-visible, structural modifications to enable the plane to handle modern launch equipment and techniques... some examples:

        - Substitute spruce for balsa

        - CF reinforcements

        - Larger joiner rods

        - Stronger tow hook systems

      3. Wing incidence and decalage

      4. Wing mounting (bolt on vs. rubber bands)

      5. Removable or bolt on stabs rather than permanent stabs as long as the assembled position replicates the original and the visible architecture is unchanged.

      6. Dihedral (either tips or center or both) can be modified a maximum of 25% of the original for personal handling characteristics.

    • Special Items:

      1. Radios can be of any type legal to operate and electronic mixing is allowable on any set of surfaces.

      2. The use of landing arrestor devices is prohibited. this does not eliminate the use of a smooth surface skid to protect the bottom landing-surface of the aircraft from scratches and nicks.

      3. The CD will have the final vote on legality on any item not covered in this document.

Bear in mind that the vision of the event is to duplicate the spirit of the old days in styling and form of aircraft and flying capability of said aircraft and only those changes consistent with launch and landing safety will be allowed.

The final proof of legality of the design for this event lies with the contestant. (Having an original set of plans would be the optimum way to settle any questions.)

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