Radio Controlled Soaring Digest September 2002 Issue
Issue Contents:
with a blue 3M painters tape and the 3M Silicone II where the caulkdidnt cure. Plane flies very fast and accelerates quickly in a dive.Using flaps to camber wing helps the model with speed range.Model only costs $215.
French Prodij 60″ Slope Racer is reviewed. Launches from catapults orbungee chord. Top of wing is molded the bottom is V.bagged. Fuse isF/g layup with a wing pylon. Nose cone slips on. Tail is abalsa lamination with F/g cloth between for a hinge. Greg found a problem
Martin Simons Sailplanes 1945-1965 is a 272 page hard cover showing3 view drawings and photos (some in color) with historical tidbits.Part 2 focused on Laminar flow smooth skinned sailplanes. By1948 no Amer. mfgr. produced sailplane had a L/d >30:1. Johnson Rossdesigned the RJ-5 which achieved a 40:1 ratio. Part 3 deals withfiberglass ships. This is a good source for scale builders.The book is available from Raul Blacksten P.O. Box 307Maywood CA 90270 on the web raulb@earthnet.net for $65+4 for S&H
The F3J World Championship in Finland is covered in a long article. ArendBorst from Canada beat out Joe Wurts by 0.7 points out of 3 000 to clinch the victory. Speared landings were required to avoid sliding out of the landing spot. Alex Hoekstra records his twister can do 10 min. in still air w/ a good launch. Europeans are happy with tight contests and no margin for error. Changes might be: Shorter tow lines (100-75m)Longer tasks (up to 15 minutes) based on conditions or Bonus tasks such as a distance to be achieved during the flight. Interesting comments about the British team and philosophy. Banquet plans didnt go well. Team Japan flew HLG models. Joe Wurts model flew with TX on ground. This was done with less drama while pilots looked over the areafor better conditions.
A family reunion in NW Iowa brought the family to the Big M and Pikes PeakPark. Toms attempt to soar the U2 met with disappointment but no damage.
Swept Wings Pt. 3 Reducing Yaw tendencies with aileron deflection.Swept wings w/o twist have an increased AOA at the tip relative to root.Wash-in is one important way to deal with it. Vectors involved with powered aircraft are discussed. Induced thrust can be caused by a winglet. A turn with a rectangular wing requires rudder input w/o aileron differential. Swept wings turn well because of induced thrust.
RCSD made a quick recovery to being current with recent mailing of Augand September issues. Special thanks given to writers and supporters.
Radio Controlled Soaring Digest September 2002 Issue
