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Jonker Sailplanes  Newsletter: DECEMBER 2016
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JONKER SAILPLANES NEWSLETTER
MARCH/APRIL 2017

Russell Cheetham World Champion 2017

Russell Cheetham started gliding in 1984 in Saltby in Lincolnshire UK in a Ka6E. He eventually won the UK Standard Class Nationals in 1997 which gave him his first opportunity to a WGC in Open Class.  Since then he has proven himself as one of the top competitors with championship titles in both the Open and 18m class. 
Russell made us very proud by winning the Open Class in the 34th World Gliding Championships hosted by Benalla early this year. We asked him to share a bit on his experience. To read his article follow the link below to our website
Read More

JS1 Self Launcher
Engine System Progress

Development of the JS1 Self Launcher had to be temporarily put on hold for R&D to focus on the completion of the more critical JS3 Project. From the end of April full attention will shift back to the final development stages of the JS1-SL. However final development and testing of the exhaust-, fuel injection- and engine management systems are currently being done on sub-contracting level. Some updates are illustrated below:
Rubber pressing the expansion chamber of the Self Launcher's Exhaust at 600 000Kg's 
One half of the Self Launcher exhaust system ready for trimming and welding
3D Print of prototype header pipe for Self Launcher exhaust system
Congratulations to the following March and April birthday guys & girls working at the JS factory:

March 2017 
-01st Justin Bezuidenhout
-04th Pule Mokwena
-06th Victor Marake
-07th Johan Dreyer
-07th Jacqualene Swart
-08st Andreas Swanepoel
-15th Neil Human
-17th Clarence Golding
-20th Jana Ferreira
-20st Christo Spandiel
-21th Gielie Coetzee
-23th AP Kotze
-24th Louis van der Walt
-25th Ockie van der Walt
-27st Lee-Anne Kruger
-30th Stephen van Sittert
April 2017 
-01st Carina van Zyl
-04th Alfred Mopelwa
-11th Ruben Bengelele
-19th Shadrack Chosetso
-25th Andries Müller

Also congratulations to the following people in the extended JS family:
March 2017
3rd Carlos Rocca
4th Ian Evans
8th Ian MacArthur
9th Wilhelm Wendt, Hadriaan van Nes, Arne Boye-Moller
13th Bill Elliot
15th Branko Blagojevic, Remigus Stalder
16th Zibi Nieradka
21st Agnete Olesen
25th Rose Johnson Evans, Michael Graves
31st Oscar Goudriaan
April 2017
1st Peter Sheard, Eric Napoleon
3rd Brad Edwards
5th Jolanta Czeladzki
12th Bruce Hay
13th Phillippe Schroeder
19th Luis Ermirio de Moraes
20th Robers Frossard
21st Ronald Termaat
25th Jean-Marc Deycard
29th Leo Benetti- Longhini
30th Shaun Lapworth, Petr Krejčiřík

Time to say Goodbye

The end of last year was a bitter sweet time for JS as we had to greet a valuable employee that impacted our company in a very positive way.

Hazel Roos initially applied for the position of Logistics Manager at Jonker Sailplanes. However shortly after her appointment it became evident that she is completely overqualified and had much more to offer as a Manager.  Therefore it was decided to make her Jonker Sailplanes’ Production Manager as well as Logistics; Human Resources and Safety Manager. Hazel's contribution went beyond her ability as an excellent manager. She was loved and respected by all employees and she built strong relationships during her time at JS. She will be sorely missed but fortunately she will still be involved by serving on the Board. As a farewell gift she received a voucher for a free flight in a twin seater glider. 
We asked her to tell us a bit more about her gift and her time at JS:
I started working at Jonker Sailplanes at the beginning of 2014.  After a period of 3 years I made the decision to go back to the explosive’s industry where I worked for more than 26 prior to my short career at JS.  The decision was not an easy one as everyone at JS became my family.  As a farewell gift I received a flight with Uys in twin seat glider. I was super excited! The flight finally realised on Saturday the 11th of March.
 
Way back in 1985 I was at the right place at the right time in Tzaneen and was afforded the opportunity to fly in a glider.  What I can remember was that the pilot was a WWII pilot with only one leg.  The glider was constructed of wood I think.  I can’t remember much of that flight as I knew nothing about gliding and I am sure the glider that we flew in only had a control stick.
 
The experience with Uys was way different. Being an excellent teacher he explained everything while we were flying. Clouds now have a different meaning to me and if I look at the sky I think to myself “what a good day for gliding J” I am surprised that my body adapted so easily and that I did not feel any nausea, especially in the thermals. I must be honest in saying that when Uys wanted me to take the stick, I just could not do it. The best part of the day was just before we landed when a fly by was done over the club house and Potchefstroom dam. 
Thank you Uys – this was a great day which I will never forget. JS will always be part of my life!!

A visit from Aland Adams and his daugther

We were honored to have Aland Adams and his daughter, Amelia, visit our factory all the way from the USA. 

Jakob Degn Jensen

Jakob was the lucky winner of a week of gliding with a JS1 in South Africa. He received SN001 in 18m configuration with recently upgraded EVO tips. This was Jakob's first time flying a JS1.

Jakob shared some of his experiences:
"As I have never flown the JS-1 before, I cannot say if it has become better, but they certainly look good. I heard so much good about the JS-1, so my expectations were rather high. They were certainly fulfilled.  I found the JS very light, harmonic and easy to handle. On the glide you really feel the potential of the glider. It is listed with a glide ratio of 53 with a nice polar. The flaps are easily operated and almost positions at the optimum position by themselves. In general there is very little need for trimming.
Landing is also not complicated. The JS has very good airbrakes and if you put flaps in L you can make very steep approaches. Ailerons still works quite well in L position, so crosswind landings are easy.
It was truly a great experience to win this trip. I flew 10 flights, a total of 40 hours and approximately 3500 km.
I would like to thank Nordic Gliding Magazine, British Airways / Sunair and Jonker Sailplanes for this fantastic opportunity."

Jakob's full article can be read in Nordic Gliding Magazine

New JS1 Wing Moulds


JS recently upgraded our wing moulds with minor profile corrections which will be used on JS1-C and JS1 Self Launcher.  The finish of the moulds are improved as well as the jigging, ensuring a perfect out of mould finish on the wings.
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Jonker Sailplanes PTY LTD · 1 Tiger Moth Street · Potchefstroom, North West 2531 · South Africa

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