Jonker Sailplanes JS-MD 3 - Technical Data

JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00
Rev. Date: 14-Feb-20
Page 1–4
Technical data
Geometry
JS-3 15 m
JS-3 18 m
Wing span
15 m / 49.21 ft
18 m / 59.06 ft
Wing area
8.75 m² / 94.18 ft
2
9.95 m² /
107.10 ft
2
Aspect ratio
25.4
32.8
Fuselage length
6.86 m / 22.51 ft
Fuselage height
1.35 m / 4.42 ft
Weight
JS-3 15 m
JS-3 18 m
Maximum weight
525 kg / 1157 lbs
600 kg / 1323 lbs
Empty Weight
(without engine)
270 kg / 595 lbs
282 kg / 622 lbs
Empty weight (minimum
options with engine)
286 kg / 631 lbs
298 kg / 657 lbs
Maximum weight without
water ballast
415 kg / 916 lbs
430 kg / 948 lbs
Wing load (min)
(70kg pilot)
40.0 kg/m² /
8.2 lb/ft
2
37.0 kg/m² /
7.58 lb/ft
2
Wing load (max)
60.0 kg/m² /
12.3 lb/ft
2
60.3 kg/m² /
12.35 lb/ft
2
Glide performance
JS-3 15 m
JS-3 18 m
Best glide ratio
50
55
Best glide speed at MTOM
flap setting 4 (9°- 13.5°)
125 km/h
67 kts
120 km/h
65 kts
Best glide speed at 450 kg
flap setting 4 (9 ° - 13.5°)
110 km/h
59 kts
105 km/h
57 kts
Sink rate
(200 km/h / MTOM)
1.57 m/s
309 ft/min
1.60 m/s
315 ft/min
Table 1.5-1 Technical data