Pilot Operating Handbook
Cavalon Pro
SECTION 9-1
Variable Pitch Propeller
RotorSport_POH_Cavalon Pro
Revision 1.0 – Issue Date 12 04 2015
9-2
The controller is energised with the aircraft master switch so that propeller parameters are
always available to the pilot.
9.1.4
Limitations
No change introduced by use of the VPP
9.1.5
Emergency Procedures
Proceed according to generic variable pitch propeller procedure provided in SECTION 3.
9.1.6
Operation
This controller has two modes of flight operation, Manual and Automatic (i.e. Constant
Speed Control).
Manual – the pilot controls the propeller pitch as necessary according to the
current flight mode. Full-FINE setting (MIN-pitch) is always used for certain flight
regimes, but any intermediate setting up to COARSE (MAX-pitch) may be
selected at the pilots discretion.
Automatic (Constant Speed Control) – the instrument compares engine rpm with
a preset value and controls the propeller so that the rpm is always within a
defined tolerance.
The propeller controller will automatically switch-off power when the propeller reaches either
of the limit stops and will indicate this by illuminating the MAX or MIN LED indicators
In addition there is a menu mode in which pre-set parameters can be examined and
adjusted. This mode would not normally be selected by the pilot in regular use. Instructions
for this part of the unit are given in the Woodcomp users manual.
