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   Online Simulators


  Problems with Flash? Please also see:
     Enabling / Unblocking Flash in Different Browsers & Compatible Browsers

 Tip: Press F11 if you need to toggle full-screen on/off to view this page better in your browser. F11 works in Internet Explorer, Firefox and Opera.

The RMI (Radio Magnetic Indicator) Simulator was designed to demonstrate the approximate indication that an RMI would display with varying positions of an aircraft in relation to certain navigational facilities.

Condensed Instructions: (printable version click here)

Select desired Navaid type and settings. Drag aircraft on horizontal or vertical panels to change the aircraft's position in relation to the facility. If North Up is selected aircraft heading changes can be set by positioning the cursor close to the aircraft on the horizontal panel then clicking the button when a "-" or "+" appears. If Heading Up is selected, aircraft heading changes can be set by positioning the cursor close to the navigational facility on the horizontal panel then clicking the button when a "-" or "+" appears.

You can now use the keyboard to control the movement of the aircraft. The following are the keys that control the aircraft:
** if key is held the aircraft will level at a rate such that the aircraft will overshoot the heading by half the bank angle when the key is originally pressed (similarly to the real aircraft)

IMPORTANT KEYBOARD CONTROL NOTE: The simulator start button must be pressed and the aircraft rotating-arround-the-globe icon must be moving for the keyboard commands to work. In addition, if clicking outside the simulator (like clicking on the browser scroll bar, text or any other area outside) the browser may stop sending the keyboard commands to the simulator. You must click on any blank portion of the simulator to allow the browser to transfer keyboard commands to it. You can also still drag and reposition the aircraft even if it is moving.

When Heading Up is selected, even though it may seem that the aircraft rotates around the navigational facility, the aircraft remains in the same position when changing heading. The reason for this is that the display will always show the navigational facility in the center of the display. This means that regardless if North Up or Heading Up is selected the aircrafts position will always be relative to the navigational facility.

General Explanation of Features:

  Compass Rose - Used as an aid to show the orientation of the Horizontal Navigation panel. It serves the same purpose
         as the compass rose symbol on IFR en route charts to show direction in relation to the magnetic north.

  Horizontal Panel - Displays the horizontal position of the aircraft in relation to the navigational facility the same
         way an IFR en route chart or an approach plate's plan view would.

  Vertical Panel - Displays the vertical position of the aircraft in relation to the navigational facility the same
         way an approach plate's profile view would.

  Navigation Aid Type - Selects the type of navigational facility. Some features such as DME or glide slope will only work
         with certain types of facilities.

  Settings Section - Select and activate different feature such as setting wind, viewing wind triangle, zooming map and more.

  NAV information - Displays information such as heading bug, DME distance and OBS setting.

  Needles - For simplification purposes the simulator is tuned either to a VOR type navaid or and NDB type and behaves as
         if one were operating and tuned to a station and the other was and vice versa depending on the navigational facility
selected. The two needles have two distinct behaviors when not receiving an adequate signal. The needle associated
         with a VOR type navaid will always point to the 180 heading of the RMI when not receiving a signal. The needle
         associated with an NDB type navaid will stay at 3 o'clock position regardless of the heading.

  Performance - When using computers that that may be slower this section can be used to improve speed and processor
         usage by increasing preset parameters such as screen refresh rate and reducing size of the aircraft trace path. On faster
         computers you can take advantage of having smoother animation and a larger trace path.

*Please note that DME may not be present together with localizer, back course localizer, LDA or SDA approaches. The DME distance shown is the approximate value a DME would indicate if such navigational facility were collocated.

CAUTION: The behavior of the RMI and other information displayed is approximate for illustration purposes only and may not reflect the actual readings on the RMI and DME.

 Enabling / Unblocking Flash in Different Browsers

Firefox BrowserFirefox unblocking procedure
on Windows PC desktops and laptops)

Chrome BrowserChrome unblocking procedure
on Apple Mac desktopts and laptops. Performance on Windows PCs is mixed, many users report the simulators are slowed too much.

Explorer BrowserExplorer
Issues: Slow performance on some computers, but worth a try if Chrome isn't working well.

Opera BrowserOpera unblocking procedure
Issues: Cripplingly slow performance on many computers

Firefox BrowserEdge unblocking procedure
Issues: Cripplingly slow performance.

Firefox BrowserSafari unblocking procedure
Issues: Keyboard control not working

Click here to find out what all the fuss is about and what is going on with Flash!
* As of this update. The situation is always changing. Experimenting with different browsers is always recommended.
IMPORTANT NOTE FOR MOBILE DEVICES AND TABLETS: This website and the simulators are designed for desktop fast laptop computers. Most Apple IOS devices do NOT support Flash.

If you do not have the latest version of flash you may visit www.adobe.com and go to the downloads section for the latest plugin version or go via the direct link: http://www.adobe.com/go/getflashplayer.


Main New Features


1. Use keyboard to control aircraft movement.
(Easy to control so you can focus on navigation.)

  2. Execute holding patterns and trace them!  
3. View wind triangle in real time.
4. Hide map so that you can test your instrument skills without the aid of the map.
(You can enable it any time to see your progress.)
5. Built in chronometer that works based on simulator speed selected.



  Navigation Simulator
Practice in our simulator specifically designed for learning the basics of instrument navigation. Try the Navigation Simulator, available for Windows. Free to try fully functional version for 10 days, $39.95 to buy.


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