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2.3 Operating speeds
Airspeed
km/h
IAS *
Warning
Vne
Vno
Vb
Va
Vfe
Vs
Vso
Never exceed speed
Maximum cruising speed
Maximum speed in
turbulence
Maximum maneuvering
speed
Maximum flap extended
speed
Stall speed / clean
Stall speed / landing
configuration
270
240
216
156
120
78
65
Do not exceed this speed in any
circumstance!
This speed can be exceeded only in smooth
air, use max. 1/3 of full deflections of the
controls.
Maximum speed for the flights in turbulence
and wind gusts
Do not use full deflections of flight controls,
the airplane could be overstressed.
Do not exceed this speed with the flaps
extended
Minimum speed with the flaps retracted
Minimum speed with the flaps full extended
*
Indicated Air Speed
2.4 Weight and load factors
2.4.1 Maximum and minimum weights
Maximum take off weight
Maximum landing weight
Maximum weight of the fuel
Maximum load of one seat
Maximum weight of load behind the seats
Minimum weight of the crew
450 kg
450 kg
49 kg
100 kg
8 kg
70 kg
2.4.2 Load factors, flight envelope
Load factors express the load of the airplane while operating with inertial and aerodynamic
forces in respect to its total allowed maximum weight. Airplane
FM-250 Vampire
is certified
for maximum take off weight 450 kg. The regulation UL 2 also demands the following load
factors.
N1 +4.0
N2 +4.0
N3 -1.5
N4 -2.0
N1, N2, N3, N4 ............. load factors by the diagram V-a (flight envelope)
Flight Manual Page 12 of 40
