Radio Controlled Soaring Digest June 2004 Issue
Issue Contents:
Results of California Valley Golden State X.C. Race are given. The winning distance was 63.2 mi. The winning speed 23.9 mph.
Mark answers questions from Chris Adams about changing camber on the winggoing from root to tip. Three Factors: 1. Penetration L/d and HL height.2. Tip Stall Resistance and 3. Min. Induced Drag. The optionsare considered. The optimum depends on what kind of flying is done.Options: a. thinned tips but wide b. thinned tips w/ taperc. tapered tips w/ twist d. tapered tips and decambered.
The Rocky Mountain Soaring Assoc. decided to rebuild their 6 winches toa single new design. Goals were established to make them light easy to set up storage of handles wheels for sod farm strong break arm spare parts to be on field. Motor plate and other parts had to be made. The frames were powder coated for protection. There were a few corrections. Cost per winch was $200 with motors and drums reused.
Lee describes the use of internet information to obtain soaring forecasts.Example given for April day using Soarcast. The process of thermalformation and cloud formation is given. Soarcast can be downloadedfrom the Harvard University SSA website.
Lithium Battery Fires is subject of bulletin. With higher energy densitycomes risk of fires with crashes improper charging shorting batteries.Lithium catches fire when exposed to oxygen.
Gordy explains the function of digital mixing capabilities and applications.2 channel V-tail is different than with ailerons. Two new terms definedas Rudder-vator and Aile-vator. Which trims do what is defined.Using Elevon mixing is what you need for planes without ailerons.Flaperons Spoilerons Rudder-aileron Mix Elevator-flap mixFlap-elevator mix multipoint Flap-elevator compensation. Differential
A review of the 50th Weak Signals RC Expo in Toledo OH. 270 vendors5000 attendees 6 sailplanes Bates Electric wing Picaliario variometerRollins synthesized receiver 8 gram receiver LSF. Static display categories and entries are shown.
Diva Pt 3 deals with the several components: D-tube keeps the sectionsof the wing aligned with right twist. The vertical fin rudder.The elevator control system. The BTP8 airfoil coordinates for thevertical fin are listed.
Thanks given to J.Andrews P.Debry M.Glass K.Love R.Weil in gettingRCSD into an electronic version. Also to Craig Burton and Bill BunnyKuhlman in converting past issues to PDF versions. Ryan Flowersis making more server space available for the new demand.
Front page is of Gordy Stahl flying his Compulsion in Franklin Kentucky.
Radio Controlled Soaring Digest June 2004 Issue
