d04923.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
73-00-00
page 23
August 01/2012
Air intake socket
Air intake socket (1):
3.2.2) Requirements on the intake air ducting
Technical data High engine performance needs air temperature as low as possible at air
intake. Therefore the air filter should be located in a recess of the engine
cowling or separated from warm air by baffles such that fresh air can be
aspirated.
3.2.3) Airfilter
General note BRP-Powertrain offers an air filter as described below.
Choice of a suit-
able filter
The following points should assist the aircraft manufacturer at the choice
of a suitable filter:
- four fold cotton fabric
- surface covered with metal screen
- total filter area at least 1400 cm
2
(217 in
2
)
- a min. flow rate of 6.23 m
3
/min (220 yd
3
/h)
3.2.4) Airbox
General note - Volume at least 2.5 Liter (.66 US gal)
- Outline dimension see Fig. 12.
Outside dia. Ø 60 mm (2 3/8‘‘)
Slip-on length Max. 25 mm (1‘‘)
Max. length of ducting 500 mm (20 in.)
Inside dia. Min. inside dia. at least outside dia. of the intake
socket on airbox.
Min. mean bending radius 100 mm (4‘‘)
Non-compliance can result in serious injuries or
death!
Use only filter elements which will not tend to restrict
the flow when in contact with water.
The certification to the latest requirements such as
FAR and EASA has to be conducted by the aircraft
manufacturer.
A minimum flow rate of 220 m
3
/h (260 yd
3
/h) has to be
warranted for all conditions.
The pressure loss must not exceed 2 hPa.
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