FLIGHT MANUAL
DYNALI HELICOPTER COMPANY
Edition N°3
DYNALI H2S January 2012
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4
TECHNICAL FOLLOW-UP
For your own safety and that of other users, you should take the habit of regularly consulting
the “Technical Publications” section of the Dynali Helicopter Company website
www.dynali.com
. You will find there :
general information from Dynali Helicopter Company
technical modifications to be made to the helicopter
future planned evolution
new associations, clubs and meetings.
The objective of this flight manual is to provide you with the technical parameters which will
enable you to benefit from your helicopter under optimum conditions.
RECOMMENDATIONS
The main purpose of this manual is to focus on safety.
Please take the time to read it attentively.
It is essential to warn you about several risks that are too often underestimated or neglected
through force of habit and to provide you with the experience acquired by the whole family of
pilots of light helicopters.
We have therefore placed on the first pages the warnings that all pilots must constantly bear
in mind.
A helicopter is, by its nature, a capricious and unstable machine which is subject to both the
laws of the air and of physics. Furthermore, its mechanical components comprise a total
chain which is both complex and precise. It requires care and maintenance. Please study
carefully the specific characteristics and the recommendations which follow. These are
derived directly from the authorities responsible for the study of accidents. They summarise
the major causes of accidents involving light helicopters.
CHARACTERISTICS SPECIFIC TO LIGHT HELICOPTERS
- Low inertia of the rotor (this is not the case with the Dynali H2S).
- Rotor rocking ; sudden movement of the cyclic stick or certain flight conditions with light
loading may cause the rotor to rock to the limit, which may cause fracture of the rotor mast
(mast bumping).
- Relatively low reserve power in certain conditions such as transition phases, high altitude
flight or air conditions : high temperature, turbulence,…
- Maximum loading suddenly attained and a marked difference between the aircraft
ʼ
s
characteristics in solo flight and heavy dual flight.
- A piston engine has little inertia ; with the slightest drop in engine speed the rotor will
“freewheel”. In icing conditions, for example, the engine may simply stop as compared with a