CN CNi  
 

 

CAI

CNv - Club Features - V2.6.2362
On-Line Club User Manual (5-14-2014)
ClearNav CNv Screen Navigation
PALT
CNV

At startup, the CNv will complete self diagnostics and display the following screens in sequence:

  • Spash Screen (left)
  • Serial number and Version Screen
  • Altitude Screen

The Altitude Screen will remain as the last display to allow the pilot to enter the actual field altitude using the Bottom Right Encoder.

All CNv screens and functions are accessed using two rotary encoders.

Red

Top Left Encoder

  • Navigates left/right to desired screen.
  • Normal rotation scrolls through all screens sequentially.
  • A quick CCW spin always displays the Cruise/Climb screen.
  • A quick CW spin always displays the Settings Screen Selector.
Green

Bottom Right Encoder

  • Controls vario volume in Cruise/Climb Screen.
  • Changes Flight parameters (MC, Bugs, Audio Volume, etc.).
  • Supports Setup parameters (Glider Model, Weight, Constants, etc.).
  • Selects Display Screen Set (Flight, Settings, or Info).
  • The CNv screens will display values (imperial, nautical, metric) selected using the PC CNvUtility application.
  • Knots, miles and feet are used for the examples following.
  • Left Mouse Click (LMC) on the desired screen in the scrolling windows below to see detailed screen usage instructions.

FLIGHT SCREENS

CLIMB
CRUISE
MC
WINDS
PROFILE HOME
BALLAST
BUGS
FLIGHT SCREENS
GLIDER SETTINGS SCREENS
ALT
OAT
MARGIN HEIGHT
DRY WEIGHT
POLAR SELECT
GLIDER SETTINGS
VARIO SETTINGS SCREENS
POINTER RESPONSE
AUDIO RESPONSE
CRUISE RESPONSE
TE SOURCE
TE SOURCE
PROBE TE COMP
ELECTRONIC TE COMP
UTC
VOLUME
BACKLIGHT
G/S WARNING
ZERO POINTER
VARIO SETTINGS

 

INFO SCREENS
GPS STATUS
LAT/LON SELECT
SPEEDS
P-ALT
SENSOR READINGS
SPLASH SCREEN
REVIEW SETTINGS
SYSTEM INFO
INFO SCREENS

 

TOOLS SCREENS
LOGBOOK
PROFILE
LICENSE
OAT (Manual)
INFO SCREENS
Detailed Screen Review

Climb Screen

20 Second Climb Average - The top row displays the average climb rate for the last 1,2 .. 20 seconds. Updates every second. Non Adjustable.

Total Climb Average - The lower row shows the average climb rate for the total climb duration. Updates every second. Max duration is one hour.

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.

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.

Each chevron corresponds to a five knot difference between the indicated airspeed and the speed-to-fly.

MacCready Screen

The MC Value is adjusted using the lower encoder.

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.

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.

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.

NAVIGATE HOME Screen

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.

H2O

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

BUGS

Bugs / Clean Screen

Estimated bug coverage is adjusted using the lower encoder.

100% = no bugs.

The impact on L/D is displayed for reference

Flight Screens

This is the entry and last screen in the Flight Screens set.

Other setting screen sets are selected using the lower encoder.

Glider Settings

This is the entry and last screen in the Glider Setting Screens set.

Other setting screen sets are selected using the lower encoder.

PALT

ALT/ GPS Screen

The altimeter setting can be adjusted using the lower encoder.

OAT Screen

The OAT value can be adjusted using the lower encoder.

Margin Height

Altitude margin added to get HOME altitude calculations.

Dry

Dry Weight

'Dry Weight' of the ship can be adjusted using the lower encoder.

Dry weight is the manufacturer's weight of the empty ship + instruments + pilot + chute + all other baggage. i.e. the actual weight of the ship with you in it - sitting on the takeoff grid - not including ballast.

Polar

Polar

A representative set of polars is available.

Polar (glider) is selectable using the lower encoder.

Any new polar may be defined using the configuration utility.

Vario Settings

This is the entry and last screen in the Vario Settings Screen set.

Other setting screen sets are selected using the lower encoder.

Pointer

Pointer Response

Pointer Time Constant is adjusted using the lower encoder. 2.5 seconds is the default.

Pointer and Audio time constants are independently adjustable.

Audio

Audio Response

Audio Time Constant is adjusted using the lower encoder. 2.5 seconds is the default.

Pointer and Audio time constants are independently adjustable.

Cruise Respone

This time constant controls the behavior of the STF chevrons and the netto (or relative netto) averages on the display.

OR

TE Source

TE Probe or Electronic TE is selected using this screen set.

The lower right encoder toggles between two screen options:

1/ Use TE probe

2/ No TE probe

The option selected here determines which TE compensation adjustment screen (following) will be displayed.

TE Probe Compensation

This screen appears next with a CW turn of the upper encoder if the 'Use TE probe' option is selected above.

TE Electronic Compensation

This screen appears next with a CW turn of the upper encoder if the 'No TE probe' option is selected above.

UTC

The LR encoder is used to enter the UTC offset required for a correct local time display.

VOL

Volume

Audio Level (volume) is adjusted using the lower encoder.

The Lower Right encoder always functions as a volume control on the Cruise/Climb Screen.

Backlight

Backlight

Backlight brightness level is adjusted using the lower encoder.

Pilot can adjust the CNv screen backlight from 0 - 100%.

Gear / Spoiler Warning Activation

Screen allows activation / deactivation of Gear and Spoilers Warnings.

Switch connections from the gear and spoiler actuators must be made to the ADC.

The warning will flash over the top of all screens until gear or spoiler retraction is completed.

Profile

Screen allows selection of a profile from multiple profile options created on the PC utility and uploaded to the CNv.

Info Screens

This is the entry and last screen for the Information Screens set.

Other setting screen sets are selected using the lower encoder.

GPS Status

Display Only.

LAT / LON / ALT Screen

Display Only.

IAS

SPEEDS - IAS/TAS/GPS Screen

Display Only.

Pressure Altitude and Fight Recorder Altitude


PALT is pressure altitude measured at the glider static source  referenced to the 1013.2 msl datum.

SFR altitude is pressure altitude measured at the cockpit pressure referenced to the 1013.2 msl datum.

Sensor Readings

Display Only.

CNv CLUB Splash Screen

Display Only.

 

Review Settings

Display Only.

 

System Info

Display Only.

Tools

This is the entry and last screen in the Tools Screen set.

Other setting screen sets are selected using the lower encoder.

Logbook

A list of the flights displaying date and duration will be displayed. Scroll don the list to see take-off time.

Tools - Profile

This screen allows profile selection from multiple available to provide different CNv defaults / setups for different pilots or configurations.

The profiles are loaded on a USB drive and are typically selected prior to takeoff.

License

This screen allows the pilot to select and install a license from a usb memory stick. Installation is only required once - the CNv will retain the license information.

OAT Manual Adjust

If no temperature probe is fitted the pilot can enter a temperature (or forecast temperature) for the current altitude and the instrument will use that to approximate the temperature with varying altitude.  An estimate within a few degrees will provide good IAS/TAS correction and wind calculations. 

Note: at present we use the standard atmosphere lapse rate.  We may switch to using an adiabatic lapse rate.

OAT probes are available here.

 

 

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