FlyPrep Help

Information about FlyPrep

Calculations Dialogs FAQ
Support
Glossary

 


FlyPrep   2.0
©2007-2012, EDV-Beratung und Erstellung von Software Olaf Bulmahn
E-mail: info@FlyPrep.com
http://www.FlyPrep.com


Information about FlyPrep

FlyPrep assists you during the flight preparation as well as during the flight.
You can do the flight preparation in front of the airplane with the exact weights of the passengers and baggage, and the correct amount of fuel in the tanks. In case of an engine failure during the flight, the GPS Mode helps you in estimating if a surrounding airfield can by reached by gliding.
In the simulation mode the airfields are shown on a map. The runways are displayed true of scale in length and in the true direction.
You can save your own airplanes in the airplane dialogs.

For flight preparation, FlyPrep provides the calculation of the planned TAS, MACH#, MH/HDG and GS; the required IAS, TAS and MACH#; the needed amount of fuel; and the Weight&Balance.
During the flight, FlyPrep provides the calculation of the current TAS, MACH# and GS; and the fuel consumption, the distance flown, the flight leg, the current wind, the Point of No Return, the Equal Time Point.
The calculation of the endurance, the pressure altitude and density altitude is useful before as well as during the flight.
For the weather trend it is important to calculate the cloud base and the dew point.

FlyPrep is only intended to be an add-on to the compulsory flight preparation and flight execution!

FlyPrep has been created with the greatest care. Nevertheless, it is not guaranteed to be error free. Always check the plausibility of the given information.

Remark: All values shown in the dialogs in this help are examples.

Usage


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Usage

At the bottom of the screen is the menu.
Menu
With the menu you can swap between the Flight preparation and Flight information dialogs, the GPS Mode, the Airplane dialogs, the Settings and the About window.

In each dialog you will find the Conversions button and the Reset button. The Input panel appears automatically by clicking into a value field.

Input panel

Input panel
With the input panel you can enter values in FlyPrep. The value selected for the input is marked with an orange background.
A click on a number or the decimal point writes the corresponding character in the orange highlighted field.
A click on the +/- symbol alternates the sign of the value in the orange highlighted field.
A click on the round cross deletes the value in the orange highlighted field.
A click on the cornered cross deletes the last character of the value in the orange highlighted field.
The click on "Return" ends the input. The input panel disappears and the orange highlighted field will set back to a white background.
Tipp: Time values can be entered as "h.m.s" (instead of "h:m:s").

Conversions button

Conversions
Pressing the Conversions button invokes the dialog Conversions.
In case you have to convert a value you want to enter in one of the Flight preparation/Flight information/Airplanes dialogs, click on the corresponding input field prior to pressing the Conversions button. Enter the value in the dialog Conversions and select the required converted value and unit. After leaving the dialog Conversions, this selected value will be copied into the previous selected input field.

Reset button

Reset
Pressing the Reset button deletes all values in the active dialog.

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Flight preparation and Flight information

In these dialogs you can do all the calculations for the flight preparation and flight information.

Start dialog

Single swipes to the right and to the left scroll between the dialogs Wind&Course, Weight&Balance, Altitude&Speed and Fuel&Distance.

Each of these dialogs holds beside the display row for the selected airplane, the Conversion button and the Reset button, the Set button and the Calc button.

Calc button

Calculation
Pressing the Calc button triggers a calculation. In the dialog Weight&Balance it leads to the calculation of the total weight, the centre of gravity and the total moment. In the dialogs Wind&Course, Altitude&Speed and Fuel&Distance the calculation depends on the given input values. In the description of these dialogs the calculations table shows which input values are needed for which calculation. When there are more input values given in a dialog than are needed for one of the calculations, all calculations of a dialog have different priorities. These priorities are shown in the calculations table in the respective dialogs as P1, P2, and so on where P1 has the highest priority, i.e. P1 is executed before P2, P2 before P3, and so on.

Set button

Set
In case you selected an airplane and/or GPS data is received, the Set button sets all relevant values of that airplane and/or from the GPS in the active dialog.
Which values can be set is described in each dialog's description.

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Wind&Course

This dialog provides the calculation of the planned MH/HDG, the planned GS, the required TAS, the wind direction and wind speed and the head wind and cross wind.

FlyPrep

For the various calculations enter the required input values and press the Calc button.

Negative values in the field "Head" mean tail wind.
Negative values in the field "Cross" mean wind from the left, positive values mean wind from the right.

In case an airplane was selected, the Set button sets the value for "TAS" and/or in case GPS data is received, the Set button sets the values for "Course", "VAR" and "GS".

The units for speed can be set via the menu "Settings".

Calculations with their required input values and priorities:
P1: planned MH/HDG in field "(Magn.)Heading", planned GS im Feld "GS"
required input values: wind direction in field "Direction", wind speed in field "Speed", TAS, true course
optional input values: variation in field "VAR"
P2: required TAS in field "TAS"
required input values: wind direction in field "Direction", wind speed in field "Speed", GS, true course
optional input values: variation in field "VAR"
P3: wind direction in field "Direction" and wind speed in field "Speed"
required input values: TT in field "Course", HDG in field "(Magn.)Heading", TAS, GS
P4: head wind in field "Head" and cross wind in field "Cross"
required input values: wind direction in field "Direction", wind speed in field "Speed", TH in field "(True)Course"

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Weight&Balance

This dialog provides the calculation of the total weight and the centre of gravity of the loaded airplane. To calculate, enter the weights and arms of the different weight points and press the Calc button.
Weight points not relevant for the upcoming flight can be left blank, they will not be considered in the calculation.

W&B

In case an airplane was selected, the Set button sets the weight value for the empty airplane and all arm values.

Pressing the Calc button triggers the calculation of the total weight, the centre of gravity and the total moment.
These values must be in the limits of your airplane!
In case an airplane was selected, the weights are checked against the specified limits (see dialog Weight in Airplanes) and it is also checked if the centre of gravity lies inside the centre of gravity diagram. When this is the case, the totals are displayed in green. When the centre of gravity lies outside the centre of gravity diagram, the totals are displayed in red. For a better visualisation the centre of gravity is shown as a cross in the centre of gravity diagram next to the Calc button.

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Altitude&Speed

This dialog provides the calculation of the pressure altitude, the desintiy altitude, the current TAS & MACH#, the planned TAS & MACH#, the required IAS & MACH#, the current TAS (from Mach#), the planned TAS (from Mach#), the cloud base and the dew point.

AltitudeSpeed

For the various calculations enter the required input values and press the Calc button.

In case an airplane was selected, the Set button sets the value for "TAS" and/or in case GPS data is received, the Set button sets the value for "Altitude".

When the background of the description "TAS" is grey you can copy the TAS value from the dialog Wind&Course. To do so, click on the greying description.

The units for speed and altitudes can be set via the menu "Settings".

Calculations with their required input values and priorities:
P1: pressure altitude
required input values: QNH, altitude
P2: density altitude
required input values: QNH, altitude, temperature or pressure altitude
P3: current TAS & MACH#
required input values: indicated temperature, IAS, pressure altitude
P4: planned TAS & MACH#
required input values: temperature, IAS, pressure altitude
P5: required IAS & MACH#
required input values: temperature, TAS, pressure altitude
P6: current TAS
required input values: indicated temperature, MACH#
P7: planned TAS
required input values: temperature, MACH#
P8: cloud base
required input values: temperature, dew point
P9: dew point
required input values: temperature, cloud base

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Fuel&Distance

This dialog provides the calculation of the Point of No Return, the Equal Time Point, the required fuel, the fuel consumption, the endurance, the flight leg, the flown distance and the current GS.

FuelDistance

For the various calculations enter the required input values and press the Calc button.

In case an airplane was selected, the Set button sets the values for "Consumption" and "Fuel" and/or in case GPS data is received, the Set button sets the value for "Speed".

When the background of the description "Headwind" is grey you can copy the head wind value from the dialog Wind&Course. To do so, click on the greying description.
When the background of the description "Speed" is grey you can copy the GS value from the dialog Wind&Course. To do so, click on the greying description.

The units for speed can be set via the menu "Settings".

Calculations with their required input values and priorities:
P1: Point of No Return in fields "Distance" and "Time"
required input values: fuel consumption in field "Consumption", available amount of fuel in field "Fuel", TAS in field "Speed", head wind
P2: Equal Time Point in fields "Distance" and "Time"
required input values: total flight distance in field "Distance", TAS in field "Speed", head wind
P3: required fuel in field "Fuel"
required input values: total flight time in field "Time", fuel consumption in field "Consumption"
P4: fuel consumption in field "Consumption"
required input values: flown time in field "Time", used amount of fuel in field "Fuel"
P5: endurance in field "Time"
required input values: fuel consumption in field "Consumption", available amount of fuel in field "Fuel"
P6: flight leg in field "Time"
required input values: distance flown in field "Distance", GS in field "Speed"
P7: distance flown in field "Distance"
required input values: flown time in field "Time", GS in field "Speed"
P8: current GS in field "Speed"
required input values: distance flown in field "Distance", needed time for this distance in field "Time"

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GPS Mode

The GPS Mode consist of two views, the airfield view and the map view. Both views show the selected airplane, the current altitude, the current true track and the current ground speed.
Single swipes to the right and to the left alternate the views.
A double tap on the track starts the simulation mode.

Airfield view

GPS

In the airfield view the runways are displayed true of scale in length and in the true direction. For grass runways, the runway and the name of the airfield are displayed in green, for sand runways both in brown, and for solid runways both in black.
The minute line indicates where the airplane will be in a few minutes. It is divided into minute segments and shows maximum 5 minute segments. Depending on the plane's speed and the resolution of the airfield view fewer minute segments may be displayed.
With the zoom buttons you can change the resolution (radius) of the airfield view. The number in the zoom button indicates which resolution the airfield view changes to after pressing it. Possible resolutions are 20(20NM), 10(10NM), 5(5NM) and 2(2,5NM). If no value is shown then there is no further zoom possibility.

The airfield view also helps you to estimate, in case of engine problems, if you can reach surrounding airfields by gliding. Prerequisite for this calculation is a selected airplane with given correct glide ratio and speed for maximum glide.
To help with the estimation, all airfields on the screen are connected to the current position with a red line. The blue part on this line marks the estimated glide distance.
When the blue part is far away from the airfield, you cannot reach this airfield by gliding.
Even if the blue part touches the airfield, it is not guarantied that you can reach the airfield by gliding. This depends on the wind, on the weather, on the surrounding terrain and how well you maintain the speed for maximum glide.

Map view

GPSMap

In the map view the airfields are displayed on a satellite map. At lower zoom the airfields are displayed as icons. At higher zoom the runways are displayed in the scale of their length and in the true direction. For grass runways, the runway is displayed in green, for sand in brown, and for solid in black. The name of the airfield is always displayed in white.
Zooming is done by pinching (zoom out) or spreading (zoom in) two fingers.
The map view needs an existing internet connection. If map tiles can't be loaded, FlyPrep automatically scrolls back to the airfield view.


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Simulation mode

The simulation mode consist of two views, the airfield view and the map view. Both views show the selected airplane and the latitude and longitude of the view's center.
Double taps on "SIM" (at the bottom of the views) alternate the views.
Both views can be scrolled using a finger like on maps. Additionally, the GPS coordinates can be entered into the input fields "Latitude" and "Longitude". A tap on a value activates the keyboard and the values can be changed. After having entered the value the view automatically scrolls to the new coordinates.
A double tap on "Longitude" ends the simulation mode.

Airfield view

GPSSim

In the airfield view the runways are displayed true of scale in length and in the true direction. For grass runways, the runway and the name of the airfield are displayed in green, for sand runways both in brown, and for solid runways both in black.
With the zoom buttons and you can change the resolution (radius) of the airfield view. The number in the zoom button indicates which resolution the airfield view changes to after pressing it. Possible resolutions are 20(20NM), 10(10NM), 5(5NM) and 2(2,5NM). If no value is shown then there is no further zoom possibility.

Map view

GPSMap

In the map view the airfields are displayed on a satellite map. At lower zoom the airfields are displayed as icons. At higher zoom the runways are displayed in the scale of their length and in the true direction. For grass runways, the runway is displayed in green, for sand in brown, and for solid in black. The name of the airfield is always displayed in white.
GPSMap

Zooming is done by pinching (zoom out) or spreading (zoom in) two fingers.
The map view needs an existing internet connection. If map tiles can't be loaded, FlyPrep automatically scrolls back to the airfield view.


Inhalt

Airplanes

In these dialogs you can manage your airplanes and airplane types respectively. In the following paragraphs the term airplanes is used for both airplanes (e.g. N765FL) and airplane types (e.g. Cessna 172).
You can create a new airplane or modify or delete an existing one.

Planes Dialog

Single swipes to the right and to the left scroll between the dialogs Weight, Centre of Gravity diagram and Misc. Values.

By clicking on another menu you quit the Airplanes dialogs and the last selected airplane will be shown in the flight preparation and flight information dialogs and in the GPS Mode. In the dialogs you can use the Set button to copy relevant values of that airplane into the active dialog.

To create a new airplane you have to enter the name in the field "Airplane" and the values in the three Airplane dialogs. By clicking on the Save button the new airplane will be added to the existing ones.
To modify an airplane select the desired airplane from the airplanes list (field "Airplane") and modify the incorrect or to be added values. By clicking on the Save button the values will be updated for this airplane.
To delete an airplane select the desired airplane from the airplanes list (field "Airplane"). By clicking on the Delete button the airplane will be removed from the list.

New button

New
Pressing the New button deletes all values in the airplanes dialogs and the field "Airplane" will be shown empty.

Save button

Save
Pressing the Save button saves the new or modified airplane.

Delete button

Delete
Pressing the Delete button removes the selected airplane from the airplanes list.

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Airplanes - Weight

In this dialog you can enter the weight of the empty airplane and the arms of all weights.

Weight

In the weight values for Fuel, Pilots, Passenger and Baggage you can enter the corresponding maximum permissible limits. The entered weights in the dialog Weight&Balance are checked against these limits during the calculation of the total weight and if a weight value violates a limit, the calculation is invalid.

Contents

Airplanes - Centre of Gravity diagram

In this dialog you can create a centre of gravity diagram from the centre of gravity limits defined in the flight manual. To do so, enter in order the pairs of value for the points of the centre of gravity limits.

Centre of gravity

By default the pairs of value are arranged as Weight and Arm. In case the pairs of value in the flight manual are given as Weight and Moment you can change the input by clicking on "Arm" to "Moment". This adjustment will be stored with the airplane and taken into account during the checking of the centre of gravity in the dialog Weight&Balance.

The correct way to fill the rows is: Enter in the top row the lightest, most front centre of gravity limit, in the second row the clockwise next centre of gravity limit (second lightest or second front) and so forth until you reach the first centre of gravity limit again.
Example with seven value pairs:
Centre of gravity example

Pressing the Draw button draws the centre of gravity diagram according to the entered values and you can check if the drawn one corresponds to the one in the flight manual.
In the dialog Weight&Balance it is checked during the calculation of the centre of gravity, as to whether it lies within this centre of gravity diagram.

Draw button

Draw
Pressing the Draw button draws the centre of gravity diagram according to the entered values.

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Airplanes - Misc. Values

In this dialog you can enter the usable fuel capacity, the average fuel consumption, the normal cruising speed (TAS), the glide ratio and the speed for maximum glide.

Misc.Values
The glide ratio and the speed for maximum glide are used in the GPS Mode to determine if a landing field is reachable by gliding in case of an engine failure.

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Conversions

This dialog offers the conversion of values. For this purpose the two input fields for unit conversion and for scale conversion are available.

Conversions

For the unit conversion, select the unit from which to convert and enter the value in the input field for unit conversion. This value will be automatically converted into values of corresponding units.
If you select one of the converted values by clicking on it, this value will be automatically copied into the last selected input field in the previous dialog when you quit this dialog (see Conversions button).

For the scale conversion, enter the value measured in cm on a map in the input field for scale conversion. This value will be automatically converted into the values for NM and km. For this the selected scale has to match the scale of the map. The scale can be changed by a click on the scale display.

To quit the dialog click on the arrow on the left side of the title.

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Settings

Here you can change the overall settings for FlyPrep and update the airfields and languages.

Settings

The following settings are available:
Contents

About

The About window. Here you can see the version of FlyPrep and start the Online help. The Online help will be shown in the selected language.

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FAQ

Q: How can I change the dialogs language?
A: Go to the menu "Settings" and select a language. The chosen language will be maintained also after restart of FlyPrep.

Q: I have a problem with the FlyPrep software, what can I do?
A: Please contact our Support and send us the following information:
a.) Model of your device
b.) Operating system (e.g. iPhone OS 3.1.3)
c.) Software name
d.) Software version (in About window)
e.) A detailed description of the problem, if possible

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Support

If you can't find a solution to your problem after reading the section "FAQ" or if you have any ideas for improvements, please contact our support: support@FlyPrep.com

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Glossary

GSGround Speed
HDGHeading
IASIndicated Air Speed
MACH#Mach number
MHMagnetic Heading
TASTrue Air Speed
TCTrue Course
THTrue Heading
TTTrue Track
VARVariation

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