Jonkers JS5 – Discovering the Namibian Sky

The latest flagship from Jonker Sailplanes, the JS5 Rey, has successfully completed its first flight in Namibia - in the world-famous thermal oasis of Bitterwasser. Thanks to excellent weather conditions, several 1000-kilometer flights have already been achieved.

With the JS5, Jonker Sailplanes sets new standards in the open class. The development focused on a lightweight structure for optimum climbing in weak thermals and exceptional glide performance at high speeds with a wingspan of 24.2 meters.


We are excited to see what record flights will be possible with this glider in the future!

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1000 km Trainingscamp Bitterwasser 2025 Zweite Phase

Von Luc Stalman, Team-Captain der Wilfried-Grosskinsky-Stiftung
Die zweite Hälfte unseres 1000-km-Trainingscamps ist gestartet, und mit der Ankunft von Felix Herold und Andreas Weitz beginnt ein neues Kapitel.

1000 km Trainingscamp Bitterwasser 2025 startet

Von Luc Stalman, Team Captain im Namen der Wilfried Grosskinsky Stiftung
Das jährliche 1000 km Trainingscamp in Bitterwasser ist erneut hervorragend gestartet.