[rcsoaringdigest] The New RC Soaring Digest | April, 2023 | Vol. 38, No. 4

This month our cover comes to us by way of Uroš Šoštarič, who captured this gorgeous 5m DG–1000 at Mangert in the Julian Alps of his native Slovenia.

April, 2023 Volume 38, No. 4

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 trouble with Canada. Terence C. Gannon Apr 03 · 9 min read "It landed in my inbox ironically on Wright-mas, which regular readers of this column will know as December 17th. If email is capable of make the sickening thump of a dead-blow hammer, this incoming email would have made that sound. It was from our national model aviation organisation..." Letters to the Editor Intellectual property, flight simulators and Daylight Saving Time - the letters we received are eclectic, to say the least. The New RC Soaring Digest Staff Apr 02 · 4 min read "It comes as a surprise that the single-most commented series we run is this one! Here's a representitive sample of what we've received in response to last month's Folding Wing Glider patent..." Spencer Lisenby Shatters Own Record, Pushes Transonic DP to 907km/h The dynamic soaring ace extends his dominance of the outright model aircraft speed record extending back over a decade. The New RC Soaring Digest Staff Apr 02 · 3 min read "Flying a Transonic DP ballasted to 9.2kg (325oz) Spencer Lisenby rocketed past his own dynamic soaring (DS) speed record to clock a run of 907km/h (564mph)..." Cool New Stuff Two exciting new contest ships, a better way of burnishing your balsa and what all the cool kids will soon be wearing. The New RC Soaring Digest Staff Apr 02 · 6 min read "Currently most state-of-the-art F5K gliders feature carbon construction. This is because they are basically revamped designs based on their motorless predecessors. It dictates great performance, just like the original DLGs, but with a steep price tag to go with it..." Here's a great way to cheekily comment on all the regulations coming down the pipe which will undoubtedly impact this thing we love to do. The slogan worked for skateboarding, so why not RC soaring, right?. Check them out in the RCSD Shop   Sponsored

Guest Editorial

It's Time to Raise the 250g Limit A 1kg limit proposed by FAA-recognized, community-based organizations strikes a better balance. Adam Weston Apr 02 · 5 min read "These CBOs ... have suggested their members and anyone else who flies RC aircraft in this weight class join a letter-writing campaign to Congress. They feel now is the time to make this move as the current FAA authorization expires in 2023 — this year..."

Features

Alien A Carbon Encounter of the Bird Kind Pierre Rondel Apr 01 · 10 min read "The new flying wing designed by Christophe Bourdon and manufactured in Ukraine by Anton Ovcharenko (OA Composites) is aptly named as the concept goes off the usual track. It is a hybrid flying machine borrowing both from the world of the flying wings but also from F3K..." Magnetic Building Board An attractive project for a Sunday afternoon. Marc Panton Mar 31 · 5 min read "Like many of you, I have a backlog of kits to build. At least three of them are 'built up' wings and one or two are even built up fuselages too. My workbench is pretty solid and mostly flat with a monolithic (and sacrificial) slab of 18mm (3/4") MDF (medium-density fibreboard) on top..." Flying Back in Time A fond recollection of an event where the star of the show burned bright but not long. Chris Williams Mar 30 · 5 min read "Every year the Ghost Squadron goes off for its holidays, usually for a week, and often in different locations. For the last couple of years, one of those locations has been near the landmark of Cheddar Gorge, in Somerset and this year, after careful scrutiny of the weather forecasts..." Project ALTius Part III: Working within weight and financial constraints. Tiberiu Atudorei Mar 30 · 13 min read "With the information from the RCGroups discussion ... and the hints from the previous articles you should have a good idea of what can be done with xflrwing and what needs to be done in NetFabb and OpenSCAD..." Twist Distributions for Swept Wings Part 3: Taming adverse yaw created by aileron deflection. Bill Kuhlman Mar 31 · 13 min read "In Part 1 we defined and provided examples of lift distributions. Part 2 examined stalling patterns of various planforms and introduced the notion that sweep angle and coefficient of lift can affect the angle of attack of outboard wing segments. Three consistent themes have been underlying the discussion thus far..." Vacuum Bagging Basics A primer for those just starting out on their composite construction journey. Rachael Geerts Mar 30 · 7 min read "Vacuum bagging is when a composite that is laid up and wet out by hand is then put under vacuum to compact the laminate and force out excess epoxy. Vacuum bagging has been a choice method of manufacturing and repairing composites for a long time..." The New RCSD Logo Peaked Cap comes in eleven colors to match your inimitable personal style. Thanks to the adjustable strap it is one-size-fits-all for both men and women. It features the New RCSD logo on the front and on the back you'll find the classic RC Soaring Digest sailplane motif which first appeared on the very first issue from January of 1984. Check them out in the RCSD Shop.   Sponsored

Ongoing Series

Condor Corner Three generations of pilots channelling flight experience through simulator training. Scott Manley Apr 01 · 5 min read "On this particular trip, the captain had also arranged to have his eight-year-old son Jason tag along, and as luck would have it, the senior Leonard finished his training early, leaving open some scheduled time on the simulator. And so it was that young Jason Leonard found himself at the controls of his first flight simulator, an American Airlines MD-11..." Soaring the Sky Podcast E108: A Soaring Fix From The Gliding Junkie Chuck Fulton Apr 01 · 2 min read "On this episode we bring you a guest host and a guest pilot! Barbora Moravcová, AKA The Gliding Junkie on Instagram is a member of the Czech National Gliding Team, flight instructor and comes from a family of aviators with both her parents being pilots..." Super Strong Clevis Rods Don't let them be the weakest link. Tom Broeski Apr 01 · 2 min read "I was having trouble with the clevis rods for my flaps bending or breaking on landing. I tried carbon rods and they broke. I tried the regular 2–56 rods and they bent. So..." Tired of that errant drop of epoxy ruining your new cashmere sweater? Is balsa dust your constant companion even when you're finished sanding for the evening? Or do you simply want to look good while working on your latest creation? In that case, you need the 100% organic cotton RCSD Shed Head Shop Apron available in four great colours, one size fits all. Check them out in the RCSD Shop.   Sponsored

Retrospectives

Glider Patents US 5026313 A: Model Airplane The New RC Soaring Digest Staff Apr 01 · 15 min read "A model airplane of the glider or sailplane type made of foamed plastics, comprising rigid stabilizing surfaces and wings and having the bottom side of the fuselage provided with a catapulting hook disposed in the vicinity of the center of gravity in a vertical plane extending through..." Stamps That Tell a Story Philatelic tributes to soaring in Japan, along with a brief history. Simine Short Apr 02 · 5 min read "The Japanese Post Office issued a set of four postcards in the early summer of 1988 to be used as summer greeting cards. One (see above) shows a stylised sailplane as the imprinted postage stamp and a stylised image of the Southern Wind. The Postal Ministry adopted the design of the glider to show..."

That's a Wrap!

The Trailing Edge The Aviator The New RC Soaring Digest Staff Apr 03 · 3 min read "Anybody who has seen the 2004 Martin Scorcese film The Aviator will likely have fallen in love with the Hughes H-1. It's sumptuous silhouette is featured in the key photo above as it glides over the slope near Wilson Lake, Kansas around the time the movie was released..."

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