Protech ZOOM 425 ccpm Specifications Page 73

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Chapter 8. Simulators
A simulator is highly recommended for helicopter beginners.
A typical well-trimmed helicopter will only hover in place for two or three seconds "hands-off"
before it starts to drift in a random direction. Therefore, a helicopter requires constant correc-
tion to hover in one spot. In addition, a drifting helicopter will gain speed much like a ball rolling
down a hill. If you are slow to move the stick to correct the drift, then you need more input to
arrest the drift, so it is best to arrest the unwanted motion quickly before it gains speed.
The hardest part of flying a helicopter is developing the "reflexes" to move the stick in the cor-
rect direction regardless of helicopter orientation and the "delicate touch" required to adjust the
helicopter movement without overcompensating. A simulator will help you develop these skills
quickly without spending a lot of money on replacement parts.
Here is a quick subjective review of some simulators, with links to get additional information:
8.1. FMS
Free! (score: 3/10)
FMS
FMS is okay for learning hovering in all orientations. The models move extremely slowly so
hovering is a little too easy. However, it does not seem to model forward flight correctly, so
when you are ready to practice forward flight, I would recommend finding a better simulator.
Futher information available from n.ethz.ch/student/mmoeller/fms.
You need to buy, or build an interface lead. There are several different designs for serial,
gamesport or USB connection. Many of the suppliers listed in Chapter 27, Electric Helicopter
and Parts Vendors sell them and a search on the web will produce a lot of suppliers, but here
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