59 Nov 05.qxp

59 Nov 05.qxp
AOPA Edition
Issue No. 59
November 2005
New Features for GEFP and Still Free!
The next version of GEFP, version 3.0, will introduce
several new features:
A Weather Tab
The Weather TAB controls the display of the above
features, and has been added to the Chart Preferences.
Everything selected from this tab will persist across each
of the zoom levels.
Only one weather type can be displayed at a time.
METAR Minimums - Allows for setting personal minimums for the display of the METAR on the Chart. The
display is represented by green, yellow, and red based on
the personal entry for this criteria.
Enhanced Weather Overlays - Winds aloft, METARS,
Temperatures, Dew Point, and Temp/Dew Point Spread
can be graphically represented on the charts. Lets take a
quick look at each feature:
Wind Barbs - will display the surface winds on the chart.
You will also get altitude winds displayed on the route
“Profile Display”. The altitude for the wind display is
selectable by selecting “Wind Altitude” under the menu
“View” and moving the “slide bar” in the pop-up.
METAR - The METARs will appear as boxes with the
letters “WX” in them. These boxes will be color coded
green, yellow, or red based on the personal minimums
set up by the user. If the user has the pointer set in
“router mode,” moving the pointer over the “WX” box
will display the entire METAR.
METAR Display
Temperature Display
Temperatures, Dew Point, and Temp/Dew Point Spread The Temperatures, Dew Point, or Temp/Dew Point
Spread will appear as values located at the METAR
reporting locations. The value that will be displayed is
selected in the “Weather Tab” in “Preferences” under the
“Chart” pull-down Menu.
Weight and Balance
Based upon the currently selected aircraft (see
[Properties]), this feature permits a graphic depiction of
the implications of various aircraft loading scenarios.
To utilize this tool, click the “Weight” column for the
desired “Moment-Arm” loading station.
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Enter the proposed actual weight and click in any other
weight station. The system will calculate the change and
graphically render the changes in the diagram on the right
side of the window.
1. Fuel is loaded in pounds in the Moment Arm stations defined with the
word “Fuel.”
New Route Planning Options - Two new options have been
added to the “Route” pull-down menu. These are Route
Wizard and Compare Altitudes. Let us look at each one:
Route Wizard - This function provides the option of
selecting SDs and STARS as input to the current GEFP
Auto Router.
2. To change the definition of the loading calculations, you must redefine the
aircraft model via the [Edit][Aircraft][Weight & Balance] tool.
3. Minimum useful fuel is defined when all usable fuel is exhausted. Therefore, in
all actuality, you will probably be landing at a higher gross weight and a
different center of gravity than displayed as indicated by the green “Minimum
useful fuel” dot.
Moment Arms
Click the Moment Arm tab
and click Add. Enter the
Moment Arm description,
default weight, and ARM
inches (typically found in
your POH). Normally, you
should enter the aircraft’s
empty weight conditions.
Note: When entering the
Moment Arm(s) for fuel, the word “fuel” needs to be in the description permitting
accurate “as loaded” calculations. Click on OK after each new Moment Arm entry.
CG Envelope
Click the CG Envelope tab and click Add. Beginning with the empty aircraft
weight and forward-most CG point, enter Weight and Inches (you will find this in
your POH) and click OK to save the data. Proceed to the next heavier weight
(typically the same forward CG point). Progress clockwise around the envelope
until all the data points are completed. Note: As you proceed, you may get a
rather strange looking envelope that changes with each data point you create.
This is okay. It will resemble the diagram in your POH when you enter the last
data point (typically the max gross weight and rear-most CG position.
Compare Altitudes - Once a route has been developed using
the GEFP flight planner, select “Compare Altitudes” under
the menu “Route” to compare time and fuel burn for different altitudes. For example, the altitude of 14,000 feet in the
chart below is optimum for both time and fuel for the aircraft
selected. By simply selecting an altitude and clicking the
“Select” button, the flight
log is automatically regenerated and the flight plan is
updated. Various altitudes
can be added for comparison
by entering the altitude in
the box at the top of the
form and clicking “Add.”
Any number of altitudes can
be added.
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