Part Five - Flying With Era; Flight Preparation On Ground; Before Take Off; During Flight - LX Navigation Era 57 User Manual

Document Name:
LX Era 57/80 user's manual
PART FIVE – FLYING WITH ERA
To get the best out of the LX Era, it is important that some preparation is done prior to the flight – trying to
configure the instrument or set up a task while flying the glider may spoil your whole day! Pre-flight
preparation will ensure that the flight will be both successful and enjoyable.

Flight preparation on ground

- Check if you have desired TP, APT and Airspace database uploaded.
- Prepare a task.
- Check pilot information (this information is written into the flight declaration)
- Check logger settings

Before take off

- Switch the unit ON at least 3 minutes before take-off (this will ensure sufficient GPS reception and will
create a base line of the baro trace).
- Select correct pilot (many settings belongs to pilot) on initial setup or create new.
- Check if the task is correct using the Task setup menu.
- During take-off the task will automatically be declared in the flight recorder.

During flight

The LX Era HW and SW concept is optimized so that the pilot doesn't spend too much time to operating the
unit during flight. A helpful that shows that the unit has changed to flying mode is the Logbook page being
replaced by the statistics page.

Set QNH

The pilot should input actual QNH value of the airport used for take-off. This action should be carried out on
ground, after take-off, change of QNH in Setup/QNH Res menu will adjust altitude reading to actual QNH
setting if there is a change.

Wind calculation

LX Era is able to measure wind using two different methods. Wind calculation results are shown on main vario
page and on thermal assistant page. LX Era will switch between straight and circling method automatically and
history of wind will be counted in new measurements.
:
Circling
Wind calculation is based on ground speed (GS) oscillations due to wind influence during circling. The
method is active only during circling. The process starts automatically after circling is detected. The
calculation is based on fact that the ground speed is affected by wind with GS is at a maximum with a
tailwind and minimum with a head wind. This GS difference is used to calculate the wind.
Straight flight:
During straight flight, wind is calculated using an iterative method that is based on IAS, GS and TRK
measurements.

Influence of wind in final glide

The actual wind data (speed and direction) influences the final glide calculation. In task mode, the final glide
indication is based on remaining distance over all TP until finish (not over already flown turn points). Wind
influence for individual legs is based on current wind data.
Version: 0.9H
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