PowerFLARM Manual Version 1.0
Warnings are issued in accordance with the time remaining to a
possible collision, not the geometric distance between the
aircraft. The first warning is typically issued between 19 and 25
seconds prior to the calculated possible collision with aircraft or
obstacle; the second is issued 14 to 18 seconds beforehand, and
the third 6 to 8 seconds in advance. Warnings are sustained as
long as the threat remains as calculated. Depending upon the
prediction, the threat may be downgraded or deleted. Warnings
are selective, i.e. they are only issued if the calculation detects a
high probability of a collision in the immediate future.
Communications between PowerFLARM units employ a
proprietary copyright protected protocol in different frequency
bands allocated by region. Effective range depends very much
upon the position in which device is fitted.
The communications system between units is locked against
unauthorised access. The design is patent protected. There is no
public access to the protocol. Any unlicensed use, copying,
distribution, conversion, replication, de-compiling, reverse
engineering, or further transmission of knowledge so acquired
relating to the system components or software, in whole or in
part, is forbidden and will result in legal enforcement action.
FLARM is an internationally registered Trade Mark and may not
be used by third parties without a license. Technical data may be
changed at any time and without prior warning. Some named
functions are not provided in all versions of PowerFLARM, but
may be provided at extra cost or for a fee.
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