Flight Manual LS1-f
Issued May 2011
5.2
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
5.2
Stall speeds
The given speeds are the minimum achievable speeds during level flight in
km/h and (kts.).
LS1-f:
Airbrakes retracted:
70 – 65 km/h (38 – 35 kts.) without waterballast
80 – 75 km/h (43 – 40 kts.) with waterballast
Airbrakes extended:
80 – 75 km/h (43 – 40 kts.) without waterballast
90 – 85 km/h (49 – 46 kts.) with waterballast
LS1-f (45):
Airbrakes retracted:
70 – 65 km/h (38 – 35 kts.) without waterballast
85 – 80 km/h (46 – 43 kts.) with waterballast
Airbrakes extended:
80 – 75 km/h (43 – 40 kts.) without waterballast
95 – 90 km/h (51 – 49 kts.) with waterballast
5.3
Demonstrated crosswing performance
The demonstrated crosswind velocity is 15 km/h (8 kts) according to the
airworthiness requirements.
5.4
Gliding performance
Wing
loading
kg/m²
32 35 40 45
Min.
sink m/s 0,6 0,65 0,7 0,75
at
V
km/h
72 80 85 90
Max.
L/D
/ 37 37,5 38 38,5
at V
km/h
85
90
95
100
The wing fuselage joint, the horizontal tailplane - fin joint and the cutout
for the talplane fixing nut should be taped and the aircraft thoroughly
cleaned to obtain maximum performance.
The polars apply to a "clean" aircraft.
With dirty wings, especially at the leading edge, or flight in rain the
performance drops accordingly.
