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Tech Talks

JS3 high wing design – from our Aerodynamic Chief Engineer Johan Bosman

 Why did you select a high-wing configuration on the JS3? Top performance sailplanes essentially must have the ability to climb and cruise better than its competitors. This implies that winning gliders have to be efficient flying machines at both low and high flight speeds which are, in many cases, contradictory design specifications. All parts, which

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News

The new standard – JS4

JS is expanding its product range and plans to release a product in the standard class – the JS4. It is important to have the “voice of the customer” early in the design phase, to ensure we specify a product meeting our customer’s needs. We need to understand who has interest in our new products,

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News

JS Production interrupted by Covid-19

Production at JS was unfortunately interrupted by the Corona virus. The South African Government has followed world best practises to slow down the spread of the COVID-19/Corona virus.    At this moment there are more than a thousand cases of infection reported in South Africa, including five fatalities.  Eight cases have been reported in the North

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News

MD-TJ 42 Jet Turbine Race

The MD-TJ 42 Jet Turbine creates the most versatile sailplane sustainer system ever made. The installation weighs a mere 17kg and with an additional 17kg of fuel an amazing 150km range is possible, climbing 2m/s at 140km/h. In the unlikely event that you are late with that critical appointment with your dear partner, you may

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Competition Results

Congratulating the best women glider pilots in the world – 10th Women’s World Gliding Championship

Jonker Sailplanes would like to congratulate the best women glider pilots of the world with their stunning performance Down Under! We particularly would like to congratulate all the winning girls: – Mélanie Gadoulet (France) in 18m class. – Sarah Kelly Arnold (USA) Standard class – Elena Fergnani (Italy) Club class. Team JS is especially proud

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Competition Results

Sailplane Grand Prix Series 10 – 2nd Qualifying Round South Africa

The Sailplane Grand Prix Series 10 – 2nd Qualifying round, hosted by Akavlieg Potchefstroom Gliding Club, was held from 3 January 2020 – 11 January 2020. Oscar Goudriaan (SA)  reigned champion followed by Louis Bouderlique (France) and Marcus Nouwens (SA), all flying JS3. Fourteen pilots competed where seven flew JS3s, six JS1s and one a

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News

100 Maiden Flights – by AP Kotze

I started gliding in 2004 at Potchefstroom gliding club after attending a training day during the final year of High school. Being from a small town, approximately 50 km north of Potchefstroom, and being involved in farming activities during most of my time there my original plan was to become a veterinarian. One flight in

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News

The JS2 SL Project Update

While other manufacturers claim to have an uncompromised design, we in the JS design team believe in a perfectly compromised design, taking into account all of the aspects of what makes a glider a superior product and balancing this to achieve the best designed glider in the world. Jonker Sailplanes has shown that they are

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Competition Results

CIM – Coppa Internazionale del Mediterraneo – 2019

From 4 August 2019 – 14 August 2019 JS’s European Agents participated at the COPPA INTERNATIONALE DEL MEDITERRANEAN CIM in Rieti – Bella Italia. This competition included spectacular mountain flying, awesome Italian food, nice company and friendship… Ten great contests days had a mix of everything – strong fast stuff but also weak blue conditions

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News

New JS Agent Structure – Europe

JS made some changes to the marketing structure in the European region. To enable us to meet the needs of our growing customer base, we have appointed two more agents, Yves Gerster and Katrin Senne . Yves lives in Switzerland, has been involved with JS since 2014 when he did his engineering internship at our design office. Since

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Competition Results

UK Open Class Nationals 2019

The UK Open Class Nationals, in spite of some relatively challenging weather, had six successful competition days! Many Congratulations to the winners Andy Davis, Tim Jenkinson and Peter Harvey, all flying in their JS1C-21 gliders! It’s also worth mentioning that the JS1 has now won the UK Open Class Nationals every year since 2013!! https://www.soaringspot.com/en_gb/lasham-nationals-lasham-2019/results/uk-open-nationals-20/task-7-on-2019-08-11/total

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News

EASA approved – The JS3 Certification Journey

June 2017 marked an incredible milestone for the JS-MD Partnership when the JS1 variant, the JS-MD 1C, was awarded type certification from EASA. Now two years later on the 18th of July the next huge milestone was achieved with the EASA approval of the JS-MD 3. The amount of resources and effort that goes into

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2019 German Championship_15m and 18m Class

The 2019 German Championships in the 15m and 18m classes was presented in Marpingen August 2019 . 15m class champion Steffen Schwarzer and runner-up David Bauder finished strong on the last day to ensure their podium places. Also hats off to Georg Theisinger who just got his nose in front of Ollie Springer and secured

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USA Open and 18m class Nationals Champions – June 2019

The outcome of the US Open and 18-m Nationals was very positive for JS pilots. Jim Lee claimed the championship title for a second time this season! The first was during the Senior Championships with a JS3 and now in the Open class with his JS1C! Jim broke 161 kph over 653 km! In Jim’s own words: “The JS1 is the best

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Danish 18m Champion – by Arne Boye-Møller

A first in Scandinavia The Danish 18m nationals in may/june was a first in many respects. For the first time ever, Jonker Sailplanes gliders participated in a Scandinavian competition, and nationals at that. On top of that, it was the first two JS3s to be allowed to fly in Scandinavia ever, piloted by respectively Henrik

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News

JS-3 18 meter, The Record Breaker – Anders Møller Andersen

Anders Andersen made this year, his year, by breaking not one but three Danish records! We are so proud of him and his uniquely purple painted JS3. We asked him to share a bit more about his adventures: Mid November offered excellent soaring conditions in the Bloemfontein area in South Africa. A whole week with thermals exceeding 5

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