Jonker JS-3 Rapture
{{Short description|South African glider}}
{{Use dmy dates|date=November 2022}}
{{Use South African English|date=November 2022}}
| {{Infobox aircraft begin
| name = JS-3 Rapture | image = File:Jonker JS-3 Rapture D-KDAB (40729214583).jpg | caption = | alt = }}{{Infobox aircraft type |type = High performance Sailplane |national origin = South Africa |manufacturer = Jonker Sailplanes |designer = |first flight = 12 December 2016 |introduced = |retired = |status = |primary user = |more users = |produced = |number built = 200 as of Oct 2023 https://jonkersailplanes.co.za/2023/10/11/celebrating-the-300th-js-glider-and-the-200th-js3/ |developed from = |variants with their own articles = |developed into = }} |
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 {{convert|15|m|ft|1|abbr=on}} or {{convert|18|m|ft|1|abbr=on}}.{{cite web|url= http://www.pilotspost.com/arn0001121|title= Jonker Sailplanes JS3 Rapture Launch|access-date= 24 July 2023|last= Henning|first= Bennie|work= Pilot Post|archive-url= https://archive.today/20230724191757/http://www.pilotspost.com/arn0001121|archive-date= 24 July 2023|url-status= live}}{{cite web|url= https://sailplanedirectory.com/sailplanes/js3-rapture/|title= JS3 Rapture |access-date= 24 July 2023|work= Sailplane Directory|archive-url= https://archive.today/20230724191813/https://sailplanedirectory.com/sailplanes/js3-rapture/|archive-date= 24 July 2023|url-status= live}}{{cite web|url= https://aeropedia.com.au/content/jonker-salplanes-js-3-rapture/|title= Jonker Sailplanes JS-3 Rapture|access-date= 15 July 2023|last=Eyre|first= David C.|work= Aeropedia|year= 2019|archive-url= https://archive.today/20230724191826/https://aeropedia.com.au/content/jonker-salplanes-js-3-rapture/|archive-date= 24 July 2023|url-status= live}}
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.
Design and development
File:Jonker JS-3 Rapture D-KKCT (47642489362).jpg
Type certification of the JS-MD 3 was achieved with EASA on 18 July 2019.
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 {{cvt|180|mm|2}} tail wheel with an aluminium hub. A retractable {{cvt|150|mm|2}} 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.{{cite web |title=JS 3 Rapture 18m – Jonker Sailplanes |url=https://jonkersailplanes.co.za/js-3-rapture-18m/ |website=jonkersailplanes.co.za |accessdate=15 August 2019 |language=en-ZA|archiveurl = https://web.archive.org/web/20190815132555/https://jonkersailplanes.co.za/js-3-rapture-18m/|archivedate = 15 August 2019}} The prototype flew in the 2017 World Gliding Championships{{cite web|url=http://www.wgc2017.com/pilots_add_here/competing-pilots.aspx|accessdate=4 July 2021|title=WGC web-site}}
Variants
;JS-3 Rapture 15m:Version with {{convert|15|m|ft|0|abbr=on}} wings
;JS-3 Rapture 18m:Version with {{convert|18|m|ft|0|abbr=on}} wings
Specifications (JS3 - RAPTURE 18m)
{{Aircraft specs
|ref=JS 3 Rapture 18m – Jonker Sailplanes
|prime units?=met
|crew=one
|capacity=
|length m=6.86
|length ft=
|length in=
|length note=
|span m=18
|span ft=
|span in=
|span note=
|height m=1.22
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=
|wing area note=
|aspect ratio=32.8
|airfoil=
|empty weight kg=280
|empty weight note=without engine, {{cvt|297|kg|0}} with engine
|gross weight kg=600
|gross weight lb=
|gross weight note=
|max takeoff weight kg=430
|max takeoff weight note=without water ballast
|more general=
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|max speed kmh=
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|never exceed speed kmh=
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|g limits=
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|glide ratio=55:1 at {{cvt|120|km/h|mph kn}} at MAUW
- Best glide speed at {{cvt|450|kg|0}}: {{cvt|105|km/h|mph kn}}
|sink rate ms=0.49
|sink rate note={{cvt|1.43|m/s|0}} at {{cvt|200|km/h|mph kn}} at MAUW
|lift to drag=
|wing loading kg/m2=37.0
|wing loading note=minimum, {{cvt|60.36|kg/m2|0}} maximum
|more performance=
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See also
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References
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External links
{{Commons category}}
- {{Official website|https://jonkersailplanes.co.za/js3-res/}}
- [http://www.pilotspost.com/arn0001776 Jonker Sailplanes JS3 Rapture 50th Roll-Out and Test Flight]
Category:2000s South African sailplanes