www.flyingmachines.cz FLYING MACHINES s.r.o. info@flyingmachines.cz
Flight envelope
-3
-2
-1
0
1
2
3
4
5
0
50
100
150
200
250
300
350
v [km/h]
n [
1
]
Flight envelope of the aircraft
FM-250 Vampire
2.5 Engine operating limitations
WARNING
Engines Rotax 912 UL and 912 ULS are not certified for aviation use and sudden
failure can occur at any time. That can lead to an emergency landing. Do not attempt
to fly when safe landing in the case of engine failure is not possible. There is no life
service or safety certificate issued to these engines. These engines are for use in
experimental and ultralight uncertified aircraft only and only in circumstances in which
an engine failure will not compromise safety.
WARNING
All risks and the responsibility concerning using and operating these engines are on
the side of the user. We inform you - as the user, that there is a possibility of sudden
engine failure.
Minimum outside temperature for take off
Maximum outside temperature for take off
Take off RPM (5 minutes max.)
Maximum continuous RPM
Idle speed
-25˚C
+50˚C
5.800 RPM
5.500 RPM
1.400 RPM
This data can slightly differ during actual operation of the engine, for details look in the
engine operator’s manual.
The installed engine must be operated in accordance with all instructions of its manufacturer.
If there is any information in this document, which contradicts the manufacturer’s instructions,
it is to be disregarded.
Flight Manual Page 13 of 40