Radio Controlled Soaring Digest June 1999 Issue
Issue Contents:
LET L-33 SOLO is a 1/4 scale model of the Czech full size sailplane. Coveredwings with servo wires installed. $800 949-442-3910
Buckmann 1/3/5 Pawnee is available in kit form for aerotowing.Gel coated Kevlar fiberglass sandwich fuselage. Obechi/foam wings
Mongo is an 8 foamy flying wing called the Mongo. The flying weight wasup to 16 lbs. In spite of weight it flys well in light lift. Good storiesof launching landing and catching the heavy model at Los Banos.Based on Panknin planform scaled to a 36″ root chord. $120 of foam.
U-2 Building Project Part 6 indicates that Steve got the help of DaveGarwood to finish the model for an appearance at Elmira 99. 7 lb. weight
Bill Winters Simitar Saracen was first of a series flying wings. Itwas a glider but most all have been powered planes. Story about involvementEPP Centron is the latest version of the Simitar which Gordytalks about in glowing terms. The original Centron was designed in 1979.
A list of safety and etiquette items which can keep you from crashing.Most accidents are pilot related. Etiquette for thermalling landing.Analysis of an accident from a person who took wrong frequency pin.Advice to have shoot down rule at your field.
Shaping the leading edge of the wing requires some careful use of simpletools. Making sanding blocks choosing grit using mini-plane fillers.
S3021 airfoil is discussed. It is a good drop-in replacement for theE-205 but with better low speed performance.
V-tail and cruciform tail designs are compared. Equations are shown andcomments made about tail volume coefficients their proper ranges andhow the requirements change with dihedral model size. alsocomparison of flat plate and symmetrical airfoils. Good resource.
Flying experiences on Maui are told by Randy Bullard Kurt Dumas fromcomments made in HSWT. Duane Asami invited mainlanders to his domain.
The late Dave Jones -western Plan Service was the source of several designs.light wing loading. 9 modifications to original design are noted.This first section discussed the design features and severalinteresting comments. Next month construction series begins.
Plywood patterns for wing ribs were cut from 1/16″ ply. Patterns were heldto balsa against table using push pins. Anderson plotting program used.A plan for polyhedral and fuselage side view are shown.Cutting out the 36 ribs took two blades.
Modifications are described to Dale Ueckers Apogee a Standard Class modeland excellent flyer. His Sophisticated Lady is shown and mods. described.
A pull-pull rudder control as described in Jers Workbench was applied to aPelican. Details about the parts used and routing are shown.
Raven Flying wing is shown and then described on article beginning on pg 8.
Radio Controlled Soaring Digest June 1999 Issue
