Author: Louis Joyner
Edition: Model Aviation - 2004/12
Page Numbers: 130,131,132,133,134,135,136
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FREE FLIGHT DURATION

Louis Joyner, 6 Saturday Rd., Mt. Pleasant SC 29464

JUNIOR WORLD CHAMPIONSHIPS

August 8–14, the 11 members of the US team competed in the 2004 Junior Free Flight World Championships in Moncontour, France. I’ve had the opportunity to watch many of the team members in action at the Nats and have developed a respect for their teamwork and ability to persevere despite bad weather and other problems. These were qualities they needed in France.

For some of our junior team, the bad weather hit before the contest. Thunderstorms in London caused flight delays and thousands of pieces of misplaced luggage, including two of the team members’ model boxes. Philip Scheiman and Brian Bauer had to make do with borrowed aircraft.

Others had problems during the contest. Sarah Radziunas, who is noted for her aggressive winding style, broke two motors in the fourth round and then launched, only to have the DPR (delayed propeller release) fail to activate. A hurried second attempt resulted in the stabilizer staying down in the power-burst setting and the model diving in.

Taylor Gunder, who was one of 10 F1B fliers with all maxes at the start of the seventh round, had the rubber motor blow just after launch, resulting in a 24-second flight.

In Power, Cody Secor dropped one second on his fifth flight when his model glided into a tree. The two most experienced US team members—2002 Junior World Champion Austin Gunder and 2002 Silver Medalist John Lorbiecki—maxed out, as did fellow team member Jonathan Schelp. It was to be an all-US flyoff.

In the early-morning flyoff, John made the seven-minute max, with Austin 12 seconds behind for second. Jonathan did 284 seconds to place third. (Cody Secor was one second short of making the flyoff, finishing fourth.) With the team placing first, third, and fourth, the US won the F1J/P team award. (Because he was flying as the defending World Champion, Austin’s score did not count toward the US team’s total.)

This report was based on Ian Kaynes’ article in Free Flight News and reports in the Southern California Aero Club’s (SCAT) Electronic News. FFn is a monthly British newsletter that provides contest reports from around the world, as well as articles and three-view drawings for all aspects of free flight. For subscription information, e-mail Ian at [email protected]. SCAT Electronic News is available on the Internet at www.aeromodel.com.

Junior Free Flight World Championships results

#### F1A Individual (53 flew)

  1. Niels Wijnhoven (Netherlands): 1,260 + 267
  2. Sergey Protozoon (Ukraine): 1,260 + 216
  3. Teemu Taponen (Finland): 1,260 + 209
  4. Anton Gorky (Russia): 1,260 + 163
  5. Janis Zarins (Latvia): 1,260 + 161
  6. Michael Avallone (USA): 1,162
  7. Tyler Secor (USA): 1,133
  8. Brian Bauer (USA): 1,059

#### F1A Team

  1. Israel
  2. Russia
  3. Netherlands
  4. USA

#### F1B Individual (29 flew)

  1. Alexi Burdov, World Champion (Russia): 1,260 + 301
  2. Rejwan Shauli Avrahm (Israel): 1,260 + 278
  3. Vevhely Gorban (Ukraine): 1,260 + 210
  4. Benjamin Marquois (France): 1,260 + 183
  5. Stephen Jallet (France): 1,260 + 182
  6. Philip Scheiman (USA): 1,240
  7. Taylor Gunder (USA): 1,104
  8. Sarah Radziunas (USA): 1,063

#### F1B Team

  1. Ukraine
  2. Israel
  3. Russia
  4. USA

#### F1J/P Individual (20 flew)

  1. John Lorbiecki (USA): 1,260 + 420
  2. Austin Gunder, World Champion (USA): 1,260 + 408
  3. Jonathan Schelp (USA): 1,260 + 284
  4. Cody Secor (USA): 1,259
  5. Lukasz Zagorowski (Poland): 1,196
  6. Mykola Plasic (Ukraine): 1,196
  7. Amanda Barr (USA): 853

#### F1J/P Team

  1. USA
  2. Russia
  3. Poland

Sympo 37

One of the problems with magazine deadlines and the four-times-a-year schedule for this column is that it can take a long time to get information out. A prime example is the National Free Flight Society's (NFFS) 2004 Symposium Report. The deadline for the September 2004 Duration column was May 10—well before the Sympo publication date. That's why there was only a brief mention of it in that column, but it deserves much more than a mention.

Editor Walt Ghio has pulled together a wide-ranging collection of papers about technical and practical aspects of free flight. Highlights include:

  • Ken Bauer, "The F1A Bunt Computer Simulations" — uses a computer program to plot how stabilizer deflection and timing affect height gain on towline glider bunt transition.
  • Hank Cole, "Selected Wing Designs for F1A and F1B" — studies a number of popular airfoils in the 20,000–50,000 Reynolds number range, including full-size drawings of root, break, and tip airfoils.
  • Rudolf Höbinger, "The Pin Turbulator" — describes use of 0.6 mm plastic pins spaced ~1/4 inch back from the leading edge, protruding about 1.0 mm to control the boundary layer.
  • Paul Rossiter, "Computer Simulation of Rubber Powered Models" — explores matching propeller and rubber motor to the model; quantifies the flight-time penalty of building heavier than minimum weight (e.g., a P-30 10 g over minimum may lose ~20 seconds).
  • William McCombs, "Eliminating the Pusher Climb Trouble" — suggests a retractable forward fin to counterbalance increased effective vertical tail area on a pusher under power.
  • Hermann Andersen, "Tips on Tips" — examines options and tradeoffs in wingtip design.
  • Peter King & Sergio Montes, "Profil v2.0, A Review" — reviews airfoil software for drawing ribs and analyzing airflow at various Reynolds numbers.

On the practical side:

  • Allard van Wallene, "Composite Moulding at Elevated Temperatures" — step-by-step molding of carbon-fiber/epoxy components using a two-piece mold and silicone core.
  • Charles Groth, "Put Your Electric in the Clouds" — details a controller and gear setup that allows cleaner propeller fold while keeping motor weight near the CG; includes "Lithium Polymer Batteries for Electric Propulsion."
  • David Mills, "Growing Your Club" — strategies for attracting and retaining free flight club members.
  • Ron Pollard, "Rubber Testing" — methods for rubber evaluation.
  • Daniel Petru, "Building F1E Magnet-Steered Gliders" — helps remove mystery from slope-soaring magnet-steered designs.
  • Mike Segrave, "Variations on a Theme by Richmond" — adapts low-aspect-ratio indoor wing planforms to a Coupe.
  • Don DeLoach, "Beginning Free Flight Power: A Journey" — recommendations for engines, models, trimming, and contest flying.
  • Aimee Raymond, "Learning to Fly With a Flight Log" — an engineering approach to trimming and flying Coupe and Wakefield.
  • Michael Woodhouse, "The End of History? Part II? Or The Never Ending Story?" — a philosophical look at the future of free flight.
  • Charles Dorsett, "The More I Fly, The Luckier I Get" — analysis of how eight former World Champions prepared and won.

The awards committee, chaired by Aram Schlosberg, chose eight airplanes for the 2004 honors:

  • V‑Squared (AMA Power) by the late Ed Keck
  • Big Red electric by Charles Groth
  • STS‑88 F1B by Stephan Stefanchuk
  • B Coup by Bill Davis
  • 35 cm F1D design by Bill Bailey
  • MARPO F1E by Marian Popescu
  • S‑27 Magic F1A by Stefan Rumpp
  • F1H by Victor Stamov

Ken Bauer received a special award for his F1A electronic timer.

The Symposium also includes biographies of the five 2004 inductees into the Free Flight Hall of Fame: Hank Nystrom, Bob Randolph, Bob Stalick, Jim Walston, and the late Ed Keck.

Copies of the 2004 Symposium are available from NFFS Publications Services, c/o Bob Stalick, Box 1775, Albany, OR 97321. The cost is $25 for NFFS members and $30 for nonmembers. Postage is an additional $4. Please make checks payable to NFFS. For more information, contact Bob Stalick via e‑mail at [email protected].

The 2005 Symposium is already in the works. If you are interested in contributing a paper, please contact Michael L. Woodhouse, editor, at 12 Marston Ln., Eaton, Norwich, Norfolk, NR4 6LZ, United Kingdom, or e‑mail [email protected].

Starlink

For most of the last decade, Allen Brush and his wife Tina have provided high‑quality rubber kits and accessories under the Starlink and FliteTech labels. Their offerings included the Burdov Coupe and Wakefield models, the Bob White Twin Fin series, and several P‑30 designs. Al worked closely with Andrey Burdov, who produced the kits in Russia.

The new owner is Larry Bagalini. New contact information:

  • Company: Starlink‑FliteTech Models
  • Address: 15423 Barona Mesa Way, Ramona, CA 92065
  • Tel.: (760) 788‑1858
  • Fax: (760) 789‑6524
  • E‑mail: [email protected]
  • Web site: www.starlink‑flitetech.com

MA

Transcribed from original scans by AI. Minor OCR errors may remain.