FLIGHT MANUAL
DYNALI HELICOPTER COMPANY
Edition N°3
DYNALI H2S January 2012
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52
6.1.
GENERAL
The purpose of this chapter is to provide the information and the required elements to enable
the calculation of the mass and balancing of the H2S helicopter in service.
6.2.
LONGITUDINAL BALANCING
WARNING
The field of balancing is conditional on the flight controls being well adjusted and with full free
movement. The original setting of the horizontal stabiliser must not be modified.
Longitudinal balance is limited between the two balancing extremities fore and aft which
correspond to the limits tested in flight.
Between these two extremities, fore and aft, anything is permitted as long as the maximum
takeoff weight of 700 kg is not exceeded.
EMPTY WEIGHT
Empty weight is the mass of a Dynali H2S helicopter empty but including :
−
basic on-board equipment
−
engine oil
−
engine coolant
−
the various lubricants
−
the unusable quantity of fuel (2,5L)
The empty weight as well as the empty C.G. must be measured for each H2S helicopter
once assembly is complete. There will be slight differences in the empty weight as well as
the position of the C.G. from one helicopter to another.
STANDARD EMPTY WEIGHT
Empty weight of a helicopter of the type measured at the Dynali plant.
PAYLOAD
Difference between the maximum takeoff weight and the empty weight.
METHODS OF DETERMINING EMPTY WEIGHT
−
Suspend the helicopter from a balance.
−
Find a technical weighbridge for vehicles (in customs or in an industrial zone).
−
Locate 4 sets of human scales 2 under each skid, on at 20 cm behind the axis of the wheel
attachment and one 26 cm forward. A delicate and imprecise operation.
