Select a waypoint from the database

From Air Navigation User Manuals
Revision as of 12:07, 23 October 2015 by Oliver (talk | contribs)
Jump to navigation Jump to search
Other languages:
English • ‎español • ‎français



Wpimage.jpgBy pressing on this button at the top toolbar on an iPad or within the toolbar in an iPhone/iPod Touch (accessible from the «screwdriver» button), you can have access to the waypoints database.


Quick Search

The Quick Search will allow you to not only get quickly to a desired waypoint, but also to create new ones by using certain commands. The results can be selected as direct-to destinations, added to the current route, shown on map or added as an user waypoint (if it isn't already a waypoint on the database).

Search by Identifier

By entering at least 3 characters in the search field the search engine will start searching in the database. It will look after:

  • IDs (ICAO Codes or Navaids IDs) in the waypoints database (Custom user waypoints incl.)
  • Name of cities or mountains
  • Documents stored in the document browser


The results will be displayed under categories (Waypoints, Radionavigation Beacons, Airports).

Search Coordinates

You can also enter coordinates in the following formats / grids / datums:

  • WGS84 in DD:MM:SS
  • WGS84 in DD:MM.decimal
  • WGS84 in DD.decimal
  • Standard UTM
  • UTM with bands
  • UPS
  • MGRS 100m
  • MGRS 10m
  • MGRS 1m
  • Irish grid without zone
  • Irish grid with zone
  • NZ Grid 1949
  • NZ Grid 2000
  • Swissgrid (CH1903)
  • UK Grid without zone
  • UK Grid with zone
  • Swedish grid RT90
  • Swedish grid SWERED99TM

The engine will try to interpret the input to match the correct datum. In order to avoid ambiguity between grids it is necessary to enter the 2-letter code of the target country:

Irish grids : IE
New Zealand grids : NZ
Swiss grid : CH
UK grids : UK
Swedish grids : SE

Examples
WGS84 in DD.decimal 46.8943 -5.4535
WGS84 in DD:MM:SS 23:34:56N 145:12:01W
Swissgrid CH 553986 200005
Swedish grid SE 6669189 486557
MGRS 32TKR6770698424

If a valid coordinate has been entered the result will appear as the first line of the search result. A true bearing and distance from the current GPS location will be displayed as well.

Searching relative waypoints

By using similar syntax as when looking for coordinates and adding commands, it is possible to create waypoints relative to a known location. 3 Modes are available:

  • Location, Direction, Distance
  • Location, Direction, Speed, Time
  • Location, Direction, Location, Direction

Location: can be either a coordinate or a waypoint identifier

Direction: can be true bearing or radial.

  • True bearing will be an angle from 0 to 360 and prefixed with a B, e.g. B055.
  • Radial will be treated as a magnetic bearing and will be an angle from 0 to 360, prefixed with a R, e.g. R220. It will be converted to true by using the current magnetic variation model.

Distance: a value in nautical miles prefixed with a D. An optional suffix will allow using other units. Example: D120KM. Supported units:

  • SM (Statute miles)
  • KM (Kilometers)
  • M (meters)

Speed: a value in knots prefixed with a S or GS. An optional suffix will allow using other units. Example: S100KMH. Supported units:

  • MPH (statue miles per hour)
  • KMH (kilometer per hour)
  • MPS (meters per second)

Time: can be a relative in minutes or an absolute time in HH:MM UTC, prefixed with T or AT for absolute. Example: AT08:21.

Examples

Location, Direction, Distance

For these examples we will use the WGS84 in DD:MM:SS format DD:MM:S

Creating a waypoint knowing a radial and DME to a navigation aid For this we need to enter a string with the following information: Location of the navigation aid (ICAO Code or Coordinates), radial and distance to the aid (in Nautical miles, Statute miles, Kilometers or meters)

Let's say I want to create a point that is on radial 275 of the VOR of Geneva (GVA) at 25NM DME I will have to enter the following string in the tool: GVA, R275, D25

The tool will choose the navigation aid with that name that is nearest to your actual position. Alternatively you can enter the coordinates:

46:15:12 N 06:08:14 E, R275, D25

If you want to use the true bearing instead of the radial you have to change the R for a B. An to change the unit just add SM for statute mile, KM for Kilometer or M for meter at the end of Distance:

GVA, B275, D25KM

Location, Direction, Speed, Time

Let 's say you are flying and you are requested by ATC to report your position 5 minutes after passing over GVA. You are flying at 108 knots GS and you are on the radial 275 of GVA.

You can enter this String and the tool will search for that point: GVA, R275, S108, T5

You can also enter a specific time in UTC. Use the Code AT before the time for this: GVA, R275, S108, AT12:58

You can also enter the speed in statute miles per hour, kilometers per hour and meters per second. Enter just MPH, KMH or MPS after the speed.

Location, Direction, Location, Direction

Creating a waypoint knowing the radials of two navigation aids You can create a point easily by entering the following information: Navigation Aid 1, Radial 1, Navigation Aid 2, Radial 2.

GVA, R100 , SCS, R300

Of course you can use coordinates or bearings for the above command.


Browse Database

Searchimage.jpg

You can search by country or use the «search» field to go directly to the waypoint you are looking for. It is possible to search by “name”, “ID”, “place”.

Once you found the desired waypoint, you can directly press on it to select it as a “direct to” or adjust it to one of the instruments (HSI, VOR, ADF); or you can press on the blue disclosure button on the right side and check the information about it such as name, city, frequency (for Navaids), runway and contact frequency info (for Airfields) and you can “jump” on the map where that waypoint is located by selecting «Show on map» button.

Showonmap.jpg


Databar.jpg The data bar at the bottom of the moving map will display real time information such as next waypoint information (identifier, name, bearing, distance and estimated time), current speed as reported by the GPS (ground speed), track, altitude as reported by the GPS, height over ground (if the elevation data for your area is installed), quality of the GPS signal. For real time navigation, the quality of the GPS signal is required to be a green or yellow symbol. A red or orange symbol will only show an approximate location and will not report speed nor track information. For better results, you should place your device near a window, with a direct view of the sky, do not hold the iPad with the hand covering the GPS antenna (black area on the top of the iPad). If you are flying with a full metal airplane or your airplane is equipped with anti ice windshield, the internal iPhone/iPad GPS may be a bit weak and you may need an external GPS module.



Back to index