Jonker JS-3 Rapture
 | This article needs additional citations for verification. (August 2019) |
| JS-3 Rapture | |
|---|---|
| Role | High performance Sailplane |
| National origin | South Africa |
| Manufacturer | Jonker Sailplanes |
| First flight | 12 December 2016 |
| Number built | 10 (as of 2019) |
The Jonker JS-3 Rapture is a glider built of glass-fibre, carbon fibre and Kevlar. It has a 15 m (49.2 ft) wingspan.
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 2006.
Design and development
Type certification of the JS-MD 3 was achieved with EASA on 18 July 2019. [1]
Features
The JS3 is equipped with Tost nose and c.ofg. release hools, retractable main undercarriage leg with elastomeric shock absorbers, fixed pneumatic 180 mm (7.09 in) tail wheel with 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 2 x 12V LiFePo 7Ah/10Ah main batteries with fuse box in luggage compartment recessed battery boxes, accessible from cockpit. Conmmunications and navigation are improved through the use of a Goose-neck microphone, two independent speakers for radio, with antenna in the rudder and a navigation computer in the instrument panel
Variants
- JS-3 Rapture 15m
- JS-3 Rapture 18m
Specifications (JS3 - RAPTURE 18m)
Data from JS 3 Rapture 18m – Jonker Sailplanes[2]
General characteristics
- Crew: 1
- 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: 28.8
- Airfoil: JS-02-127 T12 with 6 variations along wing
- 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
- Water ballast: 200 kg (441 lb)
Performance
- Maximum speed: 290 km/h (180 mph, 160 kn)
- Stall speed: 75 km/h (47 mph, 40 kn)
- Max rough air speed - 198 km/h (123 mph)
- Maximum glide ratio: 55 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) empty
- 1.43 m/s (5 ft/s) at 200 km/h (120 mph; 110 kn)
- Lift-to-drag: 55
- Wing loading: 37.0 kg/m2 (7.6 lb/sq ft) minimum
- 60.36 kg/m2 (12 lb/sq ft)
See also
Aircraft of comparable role, configuration, and era
Related lists
References
- ^ "EASA approved – The JS3 Certification Journey – Jonker Sailplanes". jonkersailplanes.co.za.
- ^ "JS 3 Rapture 18m – Jonker Sailplanes". jonkersailplanes.co.za. Retrieved 15 August 2019.