Effectivity: 914 Series
Edition 2 / Rev. 0
d04277
page 57
July 01/2008
BRP-Rotax
INSTALLATION MANUAL
Fig. 28
08320
9
1
10
In an installation as depicted with the radiator (9) in a higher position than the
standard supplied expansion tank, a water accumulator (10) has to be fitted instead
of the expansion tank. Additionally a suitable expansion tank (1) has to be installed
at the highest point of the cooling circuit.
■ CAUTION: The size and type of radiator should be adequate to transfer
thermal energy of approx. 30 kW (28 BTU/s) at take-off power.
◆ NOTE: Assessment data by experience. For troublefree operation at good
airflow a radiator of at least 500 cm
2
(78 in
2
) area has to be used.
The flow rate of coolant in the cooling system is approx. 60 l/min
(16 US gal/min) at 5800 rpm. As reference value for the necessary
cooling airflow approx. 0,75 m³/s at full load can be assumed.
The flow resistance of the coolant in the optional ROTAX-radiator
is properly designed for the cooling system.
Check flow rate and cooling capacity if other radiators are used.
12.9) General directives for the cooling system
See Fig. 28.
BRP-Rotax offers essential parts of the cooling system for this engine such as radiator,
etc..
▲ WARNING: Certification to the latest requirements to FAR or EASA has to be
conducted by the aircraft manufacturer.
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