© Flytec USA, 2003
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If the user remains stationary at the same location, then the course and compass pointer are inoperative. The exact
course (i.e., the direction the user travels over ground) is always at the top of the compass, but can also be read in
the “
Track
”
user field. When circling in a thermal the compass rose appears to turn. In reality the pointer does not
move; the unit, along with the aircraft, moves around the rose.
B3 Speed over Ground
The GPS receiver fixes its position once every second. Ground speed is derived from the distance between these
positions and can be shown in the user field
Gnd speed
. Only from the difference between airspeed and
groundspeed can one make conclusions about the wind’s influence. Using the paragliding version of the 5030 (no
pitot sensor) without a vane wheel sensor plugged in, the 5030 automatically shows the GPS speed in the analog
speed and scale and the digital speed field. The same applies to the hang gliding version of the 5030 (w/ pitot
sensor) if the pitot has been deactivated under Menu>Basic Settings>Airspeed correct. pitot
B4 Head, Cross and Tail Winds, the Wind Component
During a final glide to a goal, the wind component (i.e. the difference
between ground speed and air speed over the track) is very
important. In most cases the wind does not blow directly from the
front or from behind, but from the side. If the wind component “
Spd-
Diff
” is positive, then the pilot will fly with a tail wind, and the glide
ratio over the ground will improve. If it is negative, the glide ratio will
worsen. To find the correct angle between the destination and the
wind when a strong cross wind is present, please refer to the section
B7 Goto function.
The 5030 takes the wind component into consideration when calculating the best speed to fly and with final glide
calculations. The wind component can be either automatically entered or manually entered by the pilot. Manual
entry of the wind component is preferable to automatic in some circumstances (e.g. when there is a significant
velocity an/or direction wind shear or when a more conservative approach to goal in a headwind is desired). The
5030 defaults to automatic entry of the head/tailwind, if a manual head/tailwind is desired press the F1 (Next Func.)
key until the
Information Display
shows “HT wind auto”. Press the
or
key to set the desired head/tailwind. The
Information Display
will show the new manual setting (e.g., “HT man.
↑↓
–12” for a 12 mph head wind). To revert to
automatic head/tailwind press the F2 (Auto Wind) key. If other screens or functions are accessed during the flight the
display of the head/tailwind status my not be present in the
Information Display.
To view the current setting, alter the
current setting or change to manual/automatic status, repeatedly press the F1 (Next Func.) key until the head/tailwind
setting feature is shown in the
Information Display.
B5 Wind Direction and Speed
The wind speed can be displayed in the user field
WindSpeed
. It is necessary to fly one or two complete circles as
steadily as possible to get the 5030 to register and display a wind speed and direction. Wind direction is shown in the
compass rose by a small windsock. During the final landing approach, this symbol should always be at the top of the
compass rose (to the extent the landing field will allow).
B6 Waypoints and Coordinates
A waypoint is any single point on the earth’s surface that you would like to go to. The 5030 can save up to 200
different waypoints. Each waypoint name can have up to seventeen characters, e.g. “
Quest Air”.
To navigate to a
waypoint you also need its’ coordinates. You can also enter the altitude, i.e. 6120 feet (1865
meters) above sea level
in the waypoint altitude field.
The 5030 can also interpret waypoints entered according to the convention of using the first three letters of the
waypoint name and three numbers for the altitude in hundreds of feet. For example:
LAB067
indicates a waypoint
with the name LABxxx
and
an altitude of
6700
feet
MSL. This altitude is stored in the waypoint’s altitude field.
The 5030 displays coordinates in degrees, decimal degrees; degrees, minutes, decimal minutes; degrees, minutes,
seconds; UTM or Swiss Grid formats. These formats can be set in Menu>Basic Settings>Coordinate Format. The
5030 utilizes the standard
WGS84
(World Geodetic System 1984).
Spd o. Gnd
Dis T Wp
Alt o.WP
Time
Track
Temp
