[rcsoaringdigest] The New RC Soaring Digest | December, 2022 | Vol. 37, No. 12

The beautiful, almost sculptural cover photo was taken at Oberiberg in the Swiss Alps in December of 2017 by Pierre Gumy and features is Elf from Vladimir's Model.

December, 2022 Volume 37, No. 12

We have another great batch of articles for you this month—we encourage you to click any of the stories below to go straight to that article and start reading...

The Launch Zone

In The Air The French have a word for it. Terence C. Gannon Dec 02 · 7 min read "I also love the fact there are words in French, perhaps capturing a certain Gallic nuance, that simply do not exist in the like-a-beat-up-Jeep, utilitarian English. My favourites of all, surprisingly, are the words neuf — as in brand new, right off the factory floor — and the word nouvelle as in 'new to me'..." Letters to the Editor No Christmas cards in the mailbag yet, but there were some fascinating letters that came in. The New RC Soaring Digest Staff Dec 01 · 5 min read "Thank you for sharing the patent information for the Motor-Glider in the October issue of the New RC Soaring Digest. I recognised the plane but I did not know they obtained a patent. One that was built and flown with the name NP-100 Albatross by Nippi Corp..." F3F World Championship Hot competition in a cold climate. Sverrir Gunnlaugsson Nov 21 · 8 min read "The most recent World Championship in F3F was held in Germany back in 2018 and in 2020 it was going to France but a virus threw a very big spanner into the cogs! After postponing the 2020 competition to 2021..." Cool New Stuff We have something for every Christmas wish list—maybe even yours! The New RC Soaring Digest Staff Dec 02 · 7 min read "We have great, brand new products from Sugar Glider, Sylvia Krahl, Composite RC Gliders, Sky Bench and even something new in The RCSD Shop which celebrates our readers in 106 countries." Yes, it's the brand new New RCSD Embroidered Beanie. Already stress tested to -25C in a late December cold snap and certainly good enough for a frozen lake in Norway. Available in five great colours. Check them out in the RCSD Shop.   Sponsored

Features

High-Speed Dynamic Soaring The science underpinning this fascinating flight regime. Dr. Philip L. Richardson Nov 25 · 26 min read "Dynamic soaring uses the gradient of wind velocity (wind shear) to gain energy for energy-neutral flight. Recently, pilots of radio-controlled gliders have exploited the wind shear associated with fast winds blowing over mountain ridges..." Dream 2700 | A Tailless Tale Part II: Design Optimization and the Bell-Shaped Lift Distribution Domenico Bosco Nov 26 · 10 min read "In this second part of the journey, I will guide you through the main aerodynamic design challenges of a tailless sailplane. Nowadays, several calculation tools are available to the hobbyist..." The Slingsby King Kite Part VI: Final Building Steps and the First Flights Vincent de Bode Nov 26 · 9 min read "The pilot would be very visible so it was a challenge to make a proper job of it. My sister offered to make clothes but then I had to have a body first. I used my own measurements only slightly Photoshopped..." How Many Degrees in a (GPS) Triangle? Part II: Well, you know, life. Raymond Wright Nov 27 · 4 min read "When I last actually got an article out to the ever patient editor there was great hope that I would be flying my GPS Triangle Racing† Sport Class plane at the Fall Soar for Fun at HighPoint Aviation Airfield..." We All Need Friends Like These A little story to reaffirm your faith in humanity. Rene Wallage Nov 27 · 3 min read "For nearly the past four years I have been the very proud owner of an Enigma F5J 4m, 1.5kg full carbon glider. A few weeks ago we had a little gathering in the centre of Israel. About ten glider guiders from the Quiet Flight Club having a nice day out..." This brand new addition to our collection of quality logo merch features the flags of all 106 countries where the New RCSD is read. It's a tribute to our readers (and writers!) all around the world and a thank you to them rolled into one. Available in all sizes and seven great colours. Check them out in the RCSD Shop   Sponsored

Ongoing Series

Science for Model Flyers Part II: Forces and Inertia Peter Scott Nov 28 · 30 min read "Now we turn attention to forces and inertia. Should anyone think these ideas are a little abstract, many of them will be used in future articles on structures and machines..." Soaring the Sky Podcast E092: The Perlan Project, Soaring On Mars and the Club Class Nationals Chuck Fulton Nov 30 · 2 min read "In this episode, we first talk with Miguel A. Iturmendi-Copado, one of the pilots from the Perlan Project as he answers your questions and shares his adventures flying super high altitudes ... in the only pressurized glider in the world..." CG Balancer for Large Scale Sailplanes So simple (yet effective) it almost explains itself. Tom Broeski Nov 30 · 2 min read "I was always having trouble balancing my large planes. It seemed I needed two people to assist me. They would have to crawl under the wing and hold up the plane. It wasn't very accurate and I wanted something I could use by myself..." Looking to jazz up the flight line at your next event? If so, then New RCSD Logo Events Flag is just the product for which you have been looking. Also, if you fly it near your slope or field, it will tell you which direction the wind is blowing—no extra charge! Check it out in the RCSD Shop   Sponsored

Retrospectives

The Year of 1911 in Aviation ... and the Wright Glider A look back at a year which brought the further development of soaring as a recreational sport to the public interested in flying. Simine Short Nov 18 · 14 min read "Progress in the science of aviation in 1911 surpassed any twelve months' advancement recorded since the Wrights first flew in a motor-driven airplane in 1903. These advances were not confined to a particular country or continent..." Rediscovering Martin Simons Part V: Turbulators as discussed in two of the noted author's model aircraft books. Peter Scott Nov 30 · 16 min read "This is more material from Martin Simons' excellent books, this time on the subject of turbulators. The Reynolds Number is central to fluid flow and has always been a bit of a mystery to me. Aircraft designers use scale models in their wind tunnel experiments..." Glider Patents US 2015/0266574 A1: Glider for Airborne Wind Energy Productions The New RC Soaring Digest Staff Nov 27 · 24 min read "A glider, a system and methods for electric power production from wind are disclosed. The glider includes an airfoil, onboard steering means for pitching, rolling and yawing the glider when airborne..." Stamps That Tell a Story Could getting airborne help Santa make his appointed rounds? Simine Short Dec 01 · 2 min read "Each year for more than twenty years Brazil has issued several special airletter sheets for the holiday season. These aerogrammes have different colourful themes, and everyone is encouraged to use them. The 1980 series included..."

That's a Wrap!

The Trailing Edge So this is The Winter Issue, is it? The New RC Soaring Digest Staff Dec 02 · 3 min read "The Ed just grumbled over the pony wall partition something along the lines of: «so, um, like…y'know…winter edition…okay?» That was the entirety of his laser-like editorial directive. Good to know..."

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