Pilot Operating Handbook
H3 EasyFlyer Sport
SECTION 6
WEIGHT & BALANCE
Dynali_POH_H3 EasyFlyer Sport Rev. 2.5
– Issue date 30.10.2020 Page
47
6.2
PROCEDURE FOR WEIGHING THE HELICOPTER
Preparation of the aircraft
➢
Purge the fuel.
➢
Check oil levels.
➢
Check that all equipment included in the basic configuration are correctly
installed.
➢
Check the cleanliness of the aircraft and remove any foreign body.
Method to determine empty C.G. position and empty weight
➢
Place a water level on the rotor mast or on the tail boom.
➢
Hang the helicopter from a hoist.
➢
Note the empty weight _________kg.
➢
Place a tube under the skids, perpendicular to the helicopter.
➢
Lower the helicopter on the tube.
➢
Roll the helicopter on the tube until finding the equilibrium (tail tube at 0°).
➢
Measure the distance between the tube under the skids and the rotor mast.
➢
Note the empty C.G._________kg.
6.3
CALCULATION OF WEIGHT AND BALANCE
For each part of a helicopter there is an associated weight expressed in kilos and a
moment in relation to the datum point (the rotor mast) expressed in kg*m. This moment
corresponds to the weight of the part multiplied by the distance from the centre of
gravity of the part by reference to the datum.
Before each flight you should :
➢
Check that the position of the C.G. of the Dynali H3 EasyFlyer
‘Sport’, as it will
be on takeoff, is within the fore and aft balance limits.
➢
Ensure that the takeoff weight of the Dynali H3 EasyFlyer
‘Sport’ does not
exceed the maximum authorised takeoff weight.
These two conditions are met if the point defined by the takeoff weight and the position
of the C.G. are within the range of the longitudinal CG (see figure showing longitudinal
balance range). If either of these conditions is not met, pilot/operator must cancel the
flight.
The table below sums up the weights and distances from the datum and the moment
associated with the various parts of the helicopter and its payload.
