Rotax 898851, Operator'S Manual

Page: 26 / 140

2.1) Operating limits
General
ATTENTION
Monitor Operating limits. Limits must not be exceeded. If one or
more operating limits are exceeded, the engine must be operated so
that the values fall back into the allowed range. Carry out instruc-
tions for abnormal operation
performance is measured under following boundary conditions:
• Standard engine (without governor). Without auxiliary equip-
ment (e.g. external alternator)
• Installation in accordance with installation guidelines (e.g. in-
take and exhaust system). See latest Installation Manual
• ISA Condition( I nternational S tandard A tmosphere)
Engine speed
Parameter Min. Max.
Engine speed at idle 1800 rpm
–
Engine speed
–
5800 rpm (max. 5
minutes)
Performance
The engine performance is approximately proportional to the
airflow value and can be calculated as follows:
Observed Power [kW] ~-6.3264+0.0169*Airflow [g/min]
Parameter Min. Max.
Take-off Performance
(engine speed: 5800
rpm)
–
104 kW
Continuous Perform-
ance (engine speed:
5500 rpm)
–
99 kW (without
governor)
Critical Altitude (MAT:
max. 50 °C (120 °F)) 15000 ft
NOTE
The max. Continuous performance is available up to the critical
altitude.
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December 01 2017 BRP-Rotax Effectivity: 915 i A Series
Edition 0 / Rev. 0