Flytec 5030 v2.24 * - Manual (Page 20)

Flytec
5030 GPS
2.4 Head, Cross and Tail Winds; the Wind Component
During a goal flight or in calculating a final glide, it is the wind component (i.e. the difference
between Ground speed and Air speed) that is 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' (in the user defined fields) 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. The Flytec 5030
GPS takes the wind into consideration when calculating the best speed to fly and with final
glide calculations. (In order to find the correct angle between the destination and the wind
when a strong cross wind is present, please refer to the section 2.7 Goto function.)
Press several times at F1 until the info: HT wind = auto sh
this automatic calculated
windcomponent can be overwritten by
a manual input of a head-wind (with
negative sign) or a tailwind. Please
refer to 5.6 Final glide calculation.
But be careful with this manual win
input. The results will be wrong when
changing your flight direction. Anyway
the field SPD-Diff always displays th
real and actual difference between
Ground and Air speed and could be used for a check or a required correction.
ows up. There are reasons why
d
e
.5 Wind Direction and Windspeed
is very important to know the wind direction and speed before an out landing.
fly one or
rose by a
.6 Waypoints and Coordinates
waypoint is any single point on the earth's surface that you would like to go to. The Flytec
nter
nd commonly used
reference
nate format one chooses the following Input or Display formats
1. Degrees Minutes Decimal places of minutes dd°mm.mmm
ion )
Basically one should always try to use Nr 1) (=factory setting) because only this format is
t
Spd o . Gn d
Dis T Wp
Alt o .W P Time
Tr ac k
Tem p
2
It
The wind speed can be selected within the user defined fields. It is necessary to
two complete circles as steadily as possible. Whilst circling, the Flytec 5030 GPS
determines the wind direction and speed. Wind direction is shown in the compass
small windsock. During the landing approach this symbol must always be at the top.
2
A
5030 GPS can save up to 200 different waypoints. Each waypoint can have up to 17
characters, e.g. “Laber Airfield”. In determining the waypoint, it is also necessary to e
the altitude, i.e. “1865” meters above sea level. We still need the waypoint co-ordinates.
(Please also refer to 3.3 Waypoints – Alter, Delete or Add.)
For this the Flytec 5030 GPS utilizes the most international a
geographical maps with the name WGS84 (World Geodetic System 1984). This
system assumes that latitude is measured from the equator (0 degrees) to the North Pole,
90 degrees North, and to the South Pole, 90 degrees South. Longitude is measured from
the Greenwich meridian (London 0 degrees). East is positive (up to 180 degrees). West is
negative (-180 degrees
In Basic settings/Coordi
2. Degrees Minutes Seconds dd°mm'ss”
3. Degrees Decimal places of degrees dd.ddddd
4. UTM ( a grid with a 1km raster in both E-W and N-S direct
5. Suisse
grid
using exactly the same calculation format as the GPS receivers do and guaranty the highes
accuracy. With the other formats rounding errors could sum up to 15 m in worst case.
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