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Sailplane · JS5

JS5 Rey

The Open Class flagship: 24.2 m span, up to 69:1 glide ratio and a choice of SOLO self-launch or jet sustainer.

The JS5 was designed with one goal: to be the best Open Class sailplane in the world. Its new, smaller inner wing on the optimised JS2 fuselage makes it the king of the 24.2-metre class. As the official JS partner in Switzerland we guide your configuration personally.

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A JS5 Rey sailplane soaring over open countryside
A JS5 Rey sailplane on the airfield apron ready for launch

Why the JS5

Dr. Johan Bosman's team ran the numbers across many wingspans — 24 metres proved optimal for the Open Class: maximum performance with manageable structure, stiffness and ground handling.

Lightweight construction lets the JS5 climb in small thermals and hold high speeds. A later 18-metre winglet option is planned.

69 : 1
Best glide ratio
24.2 m
Open Class
SOLO / JET
Propulsion
9 G
Cockpit crash resistance

Technical data

24.2-metre configuration.

Best glide ratio (L/D)69 : 1
Wing area13.2 m²
Aspect ratio44.0
Empty weight450 kg
Max. take-off weight800 kg
Water ballast199 l
Minimum sink0.45 m/s
Max. wing loading60.6 kg/m²
Never-exceed speed (VNE)270 km/h
Manoeuvring speed (VA)193 km/h
Max. aerotow speed180 km/h
Max. pilot height2.03 m
JS5 Rey leather headrest with embroidered Jonker Sailplanes logo
JS5 Rey cockpit seat with safety harness and energy-absorbing cushion

Cockpit & comfort

  • Cockpit in the JS3 layout — the largest performance cockpit in its class
  • Electrically in-flight adjustable pedals and seatback with headrest
  • Forward-opening canopy, green-tinted, with an improved ventilation system
  • Leather interior with storage pockets, 525 mm shoulder width

Performance & safety

  • Teflon/Mylar control-surface gap sealing and boundary-layer control
  • Airsense probes at the tailplane, integrated bug-wiper garages
  • Dynafoam seat cushion, fire warning system as standard
  • Hydraulic disc brake, steerable tailwheel, optional Flarm antenna

Propulsion options

SOLO NEO self-launch

The retractable pylon system carries the SOLO® 2625-02i NEO Silent: a liquid-cooled, fuel-injected twin-cylinder, 50 kW (64 hp), for true self-launch. Runs on automotive or aviation gasoline, smooth and reliable.

MD-TJ-42 jet sustainer

The MD-TJ-42 jet sustainer is the perfect match for JS gliders: one switch, one throttle dial, with no noticeable performance loss when the jet is extended. Reliable, efficient and remarkably easy to use.

Class & certification

Open Class, certified under EASA CS-22; type certification via M&D Flugzeugbau, the EASA-approved design organisation. An 18-metre winglet option is planned for the future.

Complete technical data, manuals and brochures from the manufacturer Jonker Sailplanes.

Full specifications & downloads

Request an Offer

Interested in this aircraft? Request a no-obligation offer — we will get back to you personally.

Propulsion