B2500 Advanced Soaring
at a glance plus Voice status and Warning system
*current screen display varies slightly from example above.
The B2500 symbolic display was designed to answer the soaring pilot's
Where do I need to go?
How does that relate to where I am now going ?
Do I have the altitude to get there at some desired height above the
What is the wind in relation to my current track?
What is the wind in relation to my track to the next turnpoint?
Has the wind changed recently?
Can I reach a suitable landing option?
Should I remain in this thermal?
On area tasks, how am I going against the minimum task time? Can I
current screen display varies slightly from example above.
climbing the display changes and the cruise wind data is replaced
by a bar graph display showing average over the whole flight, current
thermal average, 20 second average and current Macready setting.
Without reading any numbers you can tell if this thermal is
worthwhile compared to the whole flight so far, if it is weakening or
strengthening and how the Macready setting relates to all this.
answers the main question while climbing - is this thermal a good one
or should I consider leaving?
same time the display still shows direction to next turnpoint and
Added to a
B500 variometer system the B2500 performs all soaring navigation,
glide calculations and meteorological information functions and
displays them on a simple, clearly presented graphical symbolic
display requiring minimum pilot workload for interpretation.
The instrument may also be operated “stand alone” as a
soaring optimised GPS unit with suitable GPS data input from a
commercial GPS or GPS mouse. There is some small loss of
functionality due to lack of air data input.
most flight computers have displayed much data in alphanumeric
format and while the data may have been accurate it required too much
mental effort to derive meaning and hence to be able to make
decisions based on it.
have featured highly detailed moving map displays which are eminently
suited to IFR navigation in powered aircraft but this isn't the task
at hand in a soaring computer.
have required excessive pilot interaction with switches/buttons/touch
screens/menus in a feedback loop with the instrument. Obviously this
is not ideal. It results in less time to look OUTSIDE the cockpit.
The B2500 Situational Awareness display de-clutters the displayed
information to the essentials for quick decision making and instant
As much as possible the B2500 is operated "open loop".
MacCready, bugs and ballast settings are automatically transferred
from the B500 and a pilot quickly learns how many clicks left or
right from the main flight display to call up in flight statistics,
task planning, moving map or landing site displays. The pilot can
look outside while doing this and when he next scans the panel the
desired information is there.
Other notable B2500 features
Mark a position,
decide to fly to it some time later then return to task navigation
all without interacting with the screen.
One button push alternates between a selected landing option and the
Continuous automatic in flight progress statistics.
Predicted time to finish based on real achieved rate of climb in
Simple and logical task programming/editing on the ground and
in flight for pilot option tasks.
Turnpoint rounding is automatic (fixed tasks) or pilot commanded for
area type tasks.
Final glide around all remaining turnpoints as well as next
turnpoint at the same time.
Glideslope display is the same as in professional aviation
instruments (the slope bar moves, the glider symbol is fixed) plus
numerical altitude surplus/deficit shown.
Simple "direct to" mode - allows temporary off task flying
without disruption of task statistics.
Moving map mode showing observation zone, task tracks and airspace
Status lights for diagnostics and extra situational awareness.
Turn point and airspace database and pilot optional settings/flight
recorder management by mini SD card via built in card slot.
Voice output for status and warnings. Customer configurable for
language and message format (make your own .wav files and store on
real time wind component
wind vector calculation simultaneously from drift in thermal while
circling and "zig - zag" wind.
"zig - zag" wind provides faster wind vector updates while
thermalling, while making track changes in cruising flight or while
wind change alert in cruise
wind shear indicator while climbing
All the information a soaring pilot needs for better and faster
decision making with less workload equals more time to look outside
to look at the magnificent view, clouds, birds, other gliders and air
Panel mounted LCD display
Wide temperature range
High contrast display easily visible under any glider cockpit
Low power - only 60mA at 12 volts. This instrument won't kill
batteries or require glider power system upgrades.
No batteries, memory backup by supercap
Compact size - fits over space for standard 80mm panel hole, only
32mm deep in front of panel.
Simple, intuitive control interface. No messy, difficult to use
IGC format flight recorder built-in. GPS altitude only, no pressure
altitude. Not IGC approved but may be used for contests depending on
Easy database/pilot setup options/logger downloads with mini SD card
via the built in card slot.
Does not run under PDA or PC operating systems. Uses an industrial
instrumentation and control module with programming language
optimised for stability.
B2500 manual as PDF file: B2500man.pdf