Radio Controlled Soaring Digest January 2004 Issue
Issue Contents:
Photo showing authors 10 month old son in the cockpit of a 1/3 scaleFOX at Aerotow day at Maddens Plains Sidney AU (on back cover)
The scope and focus of his column is defined as being not much on travel but new equipment methods and philosophies skegs spot targets TD contests Soaring for fun. Planning and practice landings prepare fun fliers for contests. Gordy suggests weakly clinics on spot landings and flight management.
Lessons from a lava lamp and descriptions of thermal behavior.
Advice on how to deal with slope soaring during winter conditions. Manylayers of clothing that can be shed if you get too hot. Head covering isimportant. Skii goggles protect eyes and resist fogging. Long underwear sweat shirts sweaters or flannel shirt topped off with wind jacket. For lower body parts Gortex garments are recommended or Carhartt insulated overalls or a snowmobile suit. Skii gloves or military gloves work well (Army-Navy store) Wear 2 pair of socks. Cotton under wool Consider electric socks. A positive attitude is helpful.
Servo bays cut into the bottom surface of a wing decrease the upper surf.ability to resist buckling. A calculated solution using 60 mil CF rodsprovides a solution that produces a stronger wing.
Lee Dave provide engineering data (physical properties) for expanded and extruded polystyrene (EPS XPS). Expanded PS is also known as bead board.Published compression strengths moduli from Dow and Owens Corningare not directly comparable. Dow numbers would be higher for the same foam.Links to a CAD foam cutter are given with comments.
A review of Phil Barness techniques for composite wing building is given high marks for content. Phil works talks about what he is doing on the video. A must have for would-be vacuum baggers. www.paonline.com/hayman/video.html Victory Edge XP3
Great planes laser incidence meter ($20) from GP helps you put washout ontips to control stalls. Setting decalage is another example. Normally1-2 deg between wing and h.stab. Shines spot on scale at end ofmeter. An example of understanding a tip stall problem is given.
The Fauvel AV-50 “Lutini” flying wing design is discussed. Should be agood electric model. aka AV-61 Prototype built but may not have flown.
Matt at the Univ of MN asked for support in designing a solar powered glider including covering materials and construction details.
RES Nostalgia rules are posted on www.silentflight.org Bill Kuhl givencredit for technical assistance with Mark Drela articles.
Photo on cover is of Terry Dwyer Syracuse NY Slope Dog holding CSD slopescale Northrop F-20 Tigershark on a chilly day on lake Ontario.
Radio Controlled Soaring Digest January 2004 Issue
