Vent System - BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual

VENT SYSTEM

Each tank is vented at two different points
through a series of vent lines which allow air
to enter or escape the tanks, depending upon
whether fuel is being used or added (Figure 5-
11). The vent lines extend from each wingtip
to common manifolds which form an inter-
connected inverted "U" in each fuselage wall
and then return to the wing area where they ter-
minate under the trailing edge on each side in
a flush-mounted NACA scoop. The scoop,
which has ice rejection capability, maintains
MAIN TANK VENT
MOTIVE
FLOW
5-12 CL 601-3A
NACA SCOOP INLET
SCAVENGE FLOW
TO COLLECTOR TANK
PURGE
SCAVENGE
LINE
EJECTOR
Figure 5-11. Vent System
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
CL-600-2B16 PILOT TRAINING MANUAL
a slight positive tank pressure during flight due
to ram-air effect.
There are no valves or screens in the vent
lines, so dirt or ice accumulation does not nor-
mally occur. Any trapped fuel or moisture in
the vent lines is continuously purged from the
low points by a bleed line connected to each
scavenge ejector.
During pressure fueling, the fuel tank vent lines
are augmented with special vent valves which will
be described later under "Pressure Refueling."
MAIN TANK
CLIMB VENT
INVERTED U
VENT TUBE
PURGE LINE
L té e
L td .
AUXILIARY
TANK VENT