ClearNav CNv NavDisplay User Manual
CNd Manual
CNv NavDisplay - Controls
CNd the Display for the CNv Variometer with IGC Logger
CNv NavDisplay - Climb / Cruise / Map Screens
Climb Screen Cruise Screen Map Screen
Vario Average and Current
Climb Scale - Range
Adjustable
MC Value - Adjustable
20 Second Climb Averager
and timer
Achieved Climb Averager
and timer
Climb Averager Calc
Method (TE)
Glide Slope Scale and
Metrics
Wind or Navigation
Display - Selectable
Push Pull Indicator
MC Value - Adjustable
Speed To Fly Value / Target
Cruise Averager and timer
Cruise Averager Calc
Method (N, RN)
Glide Slope Scale and
Metrics
Wind or Navigation Display
- Selectable
Moving Map still in
development - supporting:
Navigation Info - Graphics
and Metrics
Task Editor
Turn point geometry
limited to 0,5 km
circle with an FAI
sector collocated
No cylinders (Start,
Finish, or Area)
Manual selection of
the next TP in a task
No terrain, culture or
airspace
Left / Right Navigation through Screen Sets
A long press scrolls to the first or last
screen/option in the set.
Up / Down Navigation through Menus and Lists
Changes selected mode values up / down
A long press quickly scrolls to the top or bottom
screen / option in the set.
The 'GO' button supports multiple funtions:
A short press toggles the wind / navigation
display in the Cruise and Climb Screens
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A long press enables mode selection - Scale, MC
or Volume - indicated by white text over a black
background. (see next section)
A 'GO' press on other screens selects files or
displayed options.
CNv NavDisplay - Screen Modes - Scale, MC, Vol
- The mode can be switched using a long press on the 'GO' Button
- The selected mode will display on the top of the screen - over the current mode value.
- The value is changed by pressing the up / down button
- The changed values are stored in the ADC and display in all devices connected to the ADC
Scale Mode MC Mode Vol Mode
Adjusts Cruise / Climb Scale on Adjusts vario MC value using the Adjusts vario volume using the up
the left side of the display using up / down buttons / down buttons
the up / down buttons
CNv NavDisplay - Screen Navigation
FLGHT SCREENS
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POINTER
RESP
NAVIGATION SCREEN MAP (In Development)
GLIDER SETTINGS SCREENS
ALT OAT MARGIN DRY
POLAR GLIDER
SELECT SETTINGS
HEIGHT WEIGHT
VARIO SETTINGS SCREENS
AUDIO
CRUISE
TE TE PROBE ELEC TE UTC VOLUME
SOURCE SOURCE TE COMP
RESP RESP
COMP
INFO SCREENS
GPS LAT/LON SPEEDS P-ALT SENSOR SPLASH
REVIEW
SYSTEM
STATUS SELECT READINGS SCREEN SETTINGS INFO
TOOLS SCREENS
LOGBOOK PROFILE
LICENSE
OAT INFO
(Manual)
SCREENS
FLIGHT
SCREENS
G/S VARIO
WARNING SETTINGS
INFO
SCREENS
Climb Screen
20 Second Climb Average - The top numeric value displays the average climb
rate for the last 1,2 .. 20 seconds. Updates every second. Non Adjustable.
The average climb rate for the last N seconds is also indicated graphically on
the variometer scale on the left side - the triangle indicator is the N second
climb rate.
Total Climb Average - The lower numeric value shows the average climb rate
for the total climb duration. Updates every second - max duration is one hour.
CLIMB
CRUISE
MAP
MC
WINDS
PROFILE
HOME
BALLAST
BUGS
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MacCready Screen
The MC Value is adjusted using the up / down buttons.
The STF is calculated using the MC setting, ship polar, dry weight, ballast, and
bug % entered by the pilot. This is the STF in neutral air.
Map Screen
Content Forthcoming.
Cruise Screen
The Netto value is the calculated vertical speed of the airmass based on the
last 1 – n seconds of cruise flight where n = cruise time constant . The timer
shows the actual duration from the start of the current glide.
The STF is calculated based on selected flight parameters (polar, ballast,
bugs, MC, vertical airmass motion).
Wind direction and speed are displayed graphically and numerically.
Navigation information information can be displayed by pressing 'GO' button.
Each chevron corresponds to a five knot difference between the indicated
airspeed and the speed-to-fly.
The total average climb rate is also indicated graphically on the variometer
scale on the left side - the solid bar is the total climb rate average.
Both values are reset to zero when the manual cruise/climb switch is cycled.
When automatic C/C switching is in use the screen typically switches to Climb
at about 45 degrees or one eighth of a turn. The two averagers and the timers
however are reset after the first few degrees of any turn so that if/when the
vario goes into climb mode the averages (and the timers) display values from
the first point at which turning was detected. This allows the pilot to make a
faster and more accurate assessment of the lift quality.
Winds Screen
The solid black arrow shows the direction of the wind relative to the ground
track.
For small crab angles, the ground track and glider heading are roughly equal.
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Flight Screens
This is the entry and last screen in the Flight Screens set.
Other setting screen sets are selected using the up / down buttons.
Bugs / Clean Screen
Estimated bug coverage is adjusted using the lower encoder.
100% = no bugs.
The impact on L/D is displayed for reference
Ballast Screen
Ballast may be litres or US gallons.
For US gallons the AUW of the ballasted glider is computed and displayed in
lbs.
For litres the AUW of the ballasted glider is computed and displayed in kg.
AUW = Dry Weight + Ballast
NAVIGATE HOME Screen
The XC version displays navigation information for the currently selected
waypoint, or the next waypoint in a task declared in the Map Screen.
For Club versions, this screen will provide Navigation to the Home airport. The
coordinates for HOME and the elevation of the home field must be entered
using the configuration utility.
In this example, the glider has to turn right ~ 90 degrees to get home. but is
427 below the altitude required to arrive with zero margin.
Tail wind is displayed on the left side of the screen - a tail wind of two knots is
depicted.
The wind strength is 8 kts and is blowing from 352 degrees.
Ribbon Menu - Navigation
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