Jonker Sailplanes JS-MD 3 - Stall Speeds

JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00
Rev. Date: 14-Feb-20
Page 5-2
Stall speeds
The stall speeds (IAS) for the 15 m and 18 m configurations of the JS-3
are given in Table 5.2-1 and Table 5.2-2.
Table 5.2-1 gives the stall speeds for the JS-3 (15 m configuration) with
the airbrakes retracted and CG in the foremost position:
15 m Configuration (forward CG)
Gross weight
415 kg / 915 lbs
525 kg / 1157 lbs
Flap setting
Minimum achievable
speed (IAS), CG fwd.
Minimum achievable
speed (IAS), CG fwd.
L (20°)
78 km/h
42 kts
86 km/h
46 kts
5 (16.6°)
79 km/h
43 kts
88 km/h
48 kts
3 (5°)
87 km/h
47 kts
95 km/h
51 kts
1 (-3°)
91 km/h
49 kts
98 km/h
53 kts
Table 5.2-1
Table 5.2-2 gives the stall speed with the airbrakes retracted and CG in
the foremost position in the 18 m configuration:
18 m Configuration (forward CG)
Gross weight
430 kg / 948 lbs
600 kg / 1323 lbs
Flap setting
Minimum achievable
speed (IAS), CG fwd.
Minimum achievable
speed (IAS), CG fwd.
L (20°)
74 km/h
40 kts
88 km/h
48 kts
5 (16.6°)
74 km/h
40 kts
83 km/h
46 kts
3 (5°)
81 km/h
44 kts
89 km/h
48 kts
1 (-3°)
89 km/h
48 kts
97 km/h
52 kts
Table 5.2-2