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The Jonker JS-3 Rapture is a glider built of glass-fibre, carbon fibre and Kevlar. It has full-span flaps and can be operated with a wingspan of either 15 m (49.2 ft) or 18 m (59.1 ft).

The topic of this article may not meet Wikipedia's general notability guideline. (August 2019)

JS-3 Rapture
Role	High performance Sailplane Type of aircraft
National origin	South Africa
Manufacturer	Jonker Sailplanes
First flight	12 December 2016

The manufacturer is Jonker Sailplanes of Potchefstroom South Africa, founded in 2004 by two brothers, Attie and Uys Jonker. The structural and chief designer is Attie Jonker, while the airfoil and main aerodynamic features were developed by Johan Bosman in co-operation with the Delft University of Technology.

The first flight of the JS-3 was on 12 December 2016.

Design and development

Type certification of the JS-MD 3 was achieved with EASA on 18 July 2019. [1]

The JS3 is equipped with Tost nose and centre of gravity release hooks, retractable main undercarriage leg with elastomeric shock absorbers, and a fixed pneumatic 180 mm (7.09 in) tail wheel with an aluminium hub. A retractable 150 mm (5.91 in) tail wheel can be fitted in place of the fixed tailwheel. Provision is made to fit two 12V LiFePo 7Ah/10Ah main batteries with a fuse box in the luggage compartment's recessed battery boxes, accessible from cockpit. A goose-neck microphone is optional, as are two independent speakers for radio, with the antenna in the rudder and a navigation computer in the instrument panel.[2] The prototype flew in the 2017 World Gliding Championships[3]

Variants

JS-3 Rapture 15m

Version with 15 m (49 ft) wings

JS-3 Rapture 18m

Version with 18 m (59 ft) wings

Specifications (JS3 - RAPTURE 18m)

Data from JS 3 Rapture 18m – Jonker Sailplanes[2]

General characteristics

• Crew: one
• Length: 6.86 m (22 ft 6 in)
• Wingspan: 18 m (59 ft 1 in)
• Height: 1.22 m (4 ft 0 in)
• Aspect ratio: 32.8
• Empty weight: 280 kg (617 lb) without engine, 297 kg (655 lb) with engine
• Gross weight: 600 kg (1,323 lb)
  
• Max takeoff weight: 430 kg (948 lb) without water ballast

Performance

• Maximum glide ratio: 55:1 at 120 km/h (75 mph; 65 kn) at MAUW
• Best glide speed at 450 kg (992 lb): 105 km/h (65 mph; 57 kn)
• Rate of sink: 0.49 m/s (96 ft/min) 1.43 m/s (5 ft/s) at 200 km/h (120 mph; 110 kn) at MAUW
• Wing loading: 37.0 kg/m² (7.6 lb/sq ft) minimum, 60.36 kg/m² (12 lb/sq ft) maximum

See also

Related development

• Jonker JS-1 Revelation

Aircraft of comparable role, configuration, and era

• Schempp-Hirth Ventus 3
• Schleicher AS 33

Related lists

• List of gliders

References

External links

• Official website
• Jonker Sailplanes JS3 Rapture 50th Roll-Out and Test Flight

На других языках

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[de] Jonker JS3

Die Jonker JS3 Rapture ist ein einsitziges Segelflugzeug der FAI-15-m-Klasse, das auch mit 18 Metern Spannweite geflogen werden kann. Der Prototyp mit dem Kennzeichen ZS-TES flog erstmals am 12. Dezember 2016.[1]

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- [en] Jonker JS-3 Rapture

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[fr] Jonker JS-3 Rapture

Nouveau planeur de la société Jonkers, planeur de classe Course avec une envergure de 15 mètres. Il est possible de le commander avec des rallonges, portant son envergure à 18m.

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