JS-MD Single
Together with our main partner Jonker Sailplanes from South Africa, we fulfil key functions with regard to the European certification of the JS-MD Single. We are the type certificate holder for all JS models in Europe. Therefore, all JS aircraft with EASA type certification are manufactured under our production authorisation. In addition, all JS aircraft arriving in Europe undergo our final quality control and are prepared for handover. In this way, we ensure that all requirements are met and all necessary documentation is available.
JS-MD 1C
The JS1 Revelation
18m/21m flapped sailplane
The JS1 Revelation is a high-performance FAI open class glider with a length of 18 and/or 21 metres.
Designed with aerodynamics, structures and pilot comfort in mind, the JS1 has quickly gained worldwide recognition for its outstanding performance and flight characteristics.
The JS1 is available either as a pure glider or with the MD-TJ 42 engine installed.
Although production has been discontinued, pristine examples of the JS1 are available all over the world.
Technical Data
Measures and Weight
Wingspan | 18 m | 21 m |
|---|---|---|
Wing surface | 11.19 m2 | 12.25 m2 |
Wing extension | 29 | 36 |
Hull length | 7,16 m | 7,16 m |
Rumpfhöhe | 1,32 m | 1,32 m |
max. take-off weight | 600 kg | 720 kg |
Tare weight | 310 kg | 435 kg |
Surface load (max) | 54 kg/m² | 58,7 kg/m² |
Surface load (minimum 70kg pilot weight) | 35,3 kg/m² | 33,8 kg/m² |
Performance
Wingspan | 18 m | 21 m |
|---|---|---|
Best glide ratio | 1:53 | 1:60 |
minimum descent rate | 0.5 m/s | 0.48 m/s |
best recomm. glide (at max. weight) | 120 km/h | 120 km/h |
best recomm. glide (at 450 kg) | 100 km/h | 100 km/h |
VNE Max. speed | 270 km/h | 270 km/h |
VRA in gusty weather | 203 km/h | 203 km/h |
JS-MD 3
The JS3 Rapture
15/18m Single seater
The JS3 Rapture is a high-performance glider in the FAI 15 and/or 18 metre class. The JS3 is available either as a pure sailplane or with the MD-TJ 42 engine installed.
Optional 15 metre outboard wing tips transform the JS3 into a fast, manoeuvrable glider.
The standard equipment sets the JS3 apart from other gliders in its class. It has been designed for pilots with a desire for ultimate performance.
The JS3 has been proven to offer the best in performance, safety, handling and comfort.
Early on, the designers Attie Jonker and Johan Bosman thought about a new development with a 15 metre wingspan, but with more performance than usual for the class. The two saw the key to achieving significantly more performance above all in the realisation of a new fuselage. The usual wind tunnel tests were replaced by highly effective CFD analysis (computational fluid dynamics). This enables fast and efficient simulation of flows in order to calculate the forces at work and thus understand the effects on the aircraft's performance. The results achieved are extremely impressive. In addition to a significantly optimised glide ratio, uncomplicated flight behaviour (independent of the load condition), a high maximum wing loading, crash safety and cockpit ergonomics were also on the agenda.
The JS-MD 3 has not only been newly developed and designed by an experienced team over many thousands of hours. A new and integrated development approach also breaks new ground in production. Every aspect, every component, every function of a large or small part, the manufacturing process, the optimum material thickness and the required mould were defined and developed together. This approach is somewhat slower during the initial phase, but ultimately saves time in production and significantly increases precision. This made it possible to significantly reduce the mass of the aircraft without having to compromise on safety. Thanks to the high level of manufacturing precision, it is now possible to interchange wings, stabilisers or fuselages from different aircraft for the first time without any further adjustments. A novelty in sailplane construction. The JS-MD 3 is an aircraft with a performance above the usual 15 metre class, combined with maximum wing loading and the proven jet system from M&D Flugzeugbau. Last but not least, a very characteristic and dynamic design was created.
Technical Data
Measures and Weight
Wing span | 15 m | 18 m | |
|---|---|---|---|
Wing surface
| 8,75 m2
| 9,95 m2
| |
Wing extension
| 25,4
| 32,8
| |
Hull length
| 6,86 m
| 6,86 m
| |
Hull height
| 1,22 m
| 1,22 m
| Rumpfhöhe
|
max. take-off weight
| 525 kg
| 600 kg
| |
Surface load (max)
| 40 kg/m2
| 37 kg/m2
| |
Surface load (at least 70kg Piloteweight)
| 60 kg/m2
| 60 kg/m2
|
JS-MD 3 RES
The JS3 Rapture RES
15/18m Single seater
The JS3 Rapture is a high-performance glider in the FAI 15 and/or 18 metre class. The JS3 RES is available either as a pure sailplane or with the built-in
electric solo engine/self-launch system.
Optional 15m outboard wing tips transform the JS3 RES into a fast, manoeuvrable glider.
The standard equipment sets the JS3 RES apart from other gliders in its class. It has been developed for pilots who are looking for ultimate performance.
The JS3 RES has been proven to offer the best in performance, safety, handling and comfort.
Technical Data
Measures and Weight
Wing Span | 15 m | 18 m |
|---|---|---|
Wing surface
| 8,75 m2
| 9,95 m2
|
Wing extension
| 25,4
| 32,8
|
Hull length
| 6,86 m
| 6,86 m
|
Hull height
| 1,22 m
| 1,22 m
|
max. take-off weight
| 525 kg
| 600 kg
|
Surface load (max)
| 40 kg/m2
| 37 kg/m2
|
Surface load (at least 70kg Piloteweight)
| 60 kg/m2
| 60 kg/m2
|
Electric Motor
| EMRAX 208
|
Propeller type
| Technoflug KS-1C-120-R-065-S
|
Maximum Static thrust
| 90 daN
|
Maximum RPM
| 4350
|
Max power for take-off
| 40 kW
|
Max continuous climb power
| 25 kW
|
System weight (no batteries)
| +/- 24kg (53 lbs)
|
Battery Specification
Battery Type
| EMECTRIC BM 384
|
Battery configuration
| 96S4P
|
Battery Voltage
| 270V-400V
|
Usable Energy
(available energy decreases with high power settings) | 3.4 – 4.2 kWh per battery
|
Battery weight
| 25kg (55.1 lbs)
|
Maximum number of batteries
| 2
|
Standard features for your comfort
-
Low-noise propeller design
-
Pilot interface: a single switch controls the pylon extension and doors
-
Optional configuration with two batteries or with one battery
-
Automatic centring of the propeller after switching off
-
Opening/closing of the engine room doors with control sequencing to close the doors for both the retracted and extended position of the pylon.
