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Warnings and safety notes
Please note that operating the Graupner JetCat PHT3 can be dangerous. The case temperature
of the turbine can be up to 500°C (Celsius), and the exhaust gas may even reach 800°C. This is
a genuine turbine, and it requires expertise, discipline, and regular servicing and maintenance to
preserve your safety and that of other people. If you have little experience in building and
operating models of this type, it is vital that you enlist the help and advice of an experienced jet
modeller if you are to avoid potentially catastrophic errors; this applies in particular to the jet
engine itself, which should only be run when an experienced operator is present. If you have a
model flying group or club in your area where training and support are available, we strongly
recommend that you become a member. With jet-powered model aircraft any defect or
deficiency in construction or operation can result in serious personal injury or even death.
CAUTION!
Before you operate this model aircraft, you must determine the local by-laws and regulations
which apply to you, and keep within them. In legal terms our models are classed as aircraft, and
as such are subject to statutory regulations and restrictions which must be observed. Our
brochure "Luftrecht für Modellflieger" (Aviation Law for Model Flyers) is available under Order
No. 8032, and contains a summary of all these rules as defined under German law. Your local
model shop should have a copy which you can peruse. Models powered by jet engines require
the landowner's permission before flying. Third party insurance is mandatory. There are also
Post Office regulations concerning your radio control system, and these must be observed at all
times. The rules vary from country to country; please refer to your RC system instructions for
more details.
WARNING!
It is your responsibility to protect others from possible injury. Keep a safe distance from resi-
dential areas in order to protect people, animals and buildings: at least 1.5 km "as the crow
flies". Keep well clear of high-tension overhead cables. Don't fly your model in poor weather,
especially when there is low cloud cover or fog. Don't fly the model directly into the sun, as you
could easily lose visual contact with it. To avoid collisions, always keep well clear of full-size
aircraft, whether manned or unmanned. It is your responsibility to land immediately if a real air-
craft approaches.
When operating a Graupner turbine you must keep people and animals a safe distance away
from the danger area. This means:
In front of the turbine
To the side of the turbine
Behind the turbine
WARNING!
Operating a model aircraft under the influence of alcohol or drugs is not permissible under any
circumstances.
The operator of the model must be in full possession of his or her bodily and mental faculties.
This applies both to the operator and any assistants.
WARNING!
This turbine is designed exclusively for model flying, and is not suitable for any other purpose. It
must never be used in a machine for carrying people or goods, nor for any other purpose except
as a model aircraft power plant. Misuse of this engine may result in serious personal injury or
even death.
WARNING!
It is essential not to make any modifications of any kind to the turbine. If you deviate from the
instructions, perhaps by using different components or materials, or by making changes to the
structural design, you may seriously affect the ability of the engine to function correctly. Please
resist the temptation, and operate the turbine exactly as directed.
Helicopter mechanics
with model turbine engine
4.5 m
7.5 m
4.5 m
32
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