Radio Controlled Soaring Digest June 2001 Issue
Issue Contents:
Information on wind direction and speed can be obtained from weather maps. Web sites listed. How to read weather charts.
Summary of MA409 and S6063 study of former article. Planform optimizationshowed 8-12 AR to be about right. Variable camber considered.calculations on launch height flight time with aspect ratio andweight. Flaperons may provide benefits beyond this analysis.
Shuffleboard landing pattern at Mid-south presents problems if you dontline up as if it was a runway and land like it is a circle.
Foamies have made steady progress since Anabats. The JW by Bowmans hobbiesis reviewed and praised my many fliers as the best slope foamy developed.Airfoil designed by Joe Wurts for task of dynamic soaring.Flutter on foamies is common at high speeds. The JW is designed for speed.
Scotts last column details the Montague XC Challenge of June. Lift wasgood on course. Mike Gervais flew 6 hr went 66 miles for a 100k pin.
Blackbird 2M Project Pt 4 – Fiberglassing the fuselage was done with 3adn 1.5 oz. cloth and polyester resin. This is a lower cost option.Heavy cloth goes on bottom side up front and small strips are usedon fin. Sand and fill before painting.Choose light colors on top and dark on bottom.Zynolyte Gray primer is compatible with many paint types fast filling and sands well.Auto paint suppliers can match paint color to covering. Acrylic enamels can take heat and solvents. Radio installation described and instructions for a cautious first glide. New airfoil works better than former.
Dynamic Soaring (DS) is explained. Energy is added to a model when flyinga circular path into and out of high velocity air on the front of a slopeThe practice was developed by Joe Wurts and is the subject ofthe “Lift Ticket” video.
Tow hook position should be roughly set using the CG position on the wingprojecting 30 deg forward to the fuselage bottom. Fine tune advice.
Cover photo of Scott Hewitts JW Flying Wing. JW stands for Joe Wurts
Radio Controlled Soaring Digest June 2001 Issue
