fpg ah64 mtf mtfc sum

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AH-64Maintenance Test FlightCalculator

Users Manual

Distribution Statement E:Distribution authorized to DoD components onlyCritical Technology, August 2004.Other requests for this document shall be referred to:

CDR, USARDECOMAMSRD-AMR-AE-A Aeromechanics DivisionVisit our website at http://www.aeromech.redstone.army.mil/

Prepared by the Flight Performance GroupRevision 1.1March 2005
http://www.aeromech.redstone.army.mil/http://www.aeromech.redstone.army.mil/


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FLIGHT PERFORMANCE GROUPDoc #: FPG-AH64 MTF-MTFC-SUMRevision: 1.1 Page 2 of 41

MTFC USERS MANUAL

REVISION LOG

Section Page Rev. Date Descript ion Of Change Approved by:

All All 1.0

All All 1.1 March - 2005 Various updates


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TABLE OF CONTENTS

1.0 Int roduct ion......................................................................................................... 61.1 Warnings, Cautions, and Notes......................................................................... 61.2 System Requirements ........................................................................................ 61.3 Installation Instruct ions .....................................................................................61.3.1 Ini tial Instal lat ion............................................................................................. 61.3.2 Subsequent Installat ions................................................................................71.4 Authorized Use ...................................................................................................71.5 Referenced Documents .....................................................................................82.0 User Interface...................................................................................................... 92.1 Menu .................................................................................................................... 92.1.1 File Menu ......................................................................................................... 92.1.2 Help Menu......................................................................................................102.2 Common Page Functions ................................................................................112.2.1 Drop-Down Combination Box ......................................................................112.2.2 Keypads ......................................................................................................... 122.2.3 Calculate Button .................................................................................................132.2.4 Warnings ............................................................................................................. 132.2.5 View Errors/Warnings Button............................................................................ 132.2.6 Errors .................................................................................................................. 142.3 Print ing................................................................................................................... 152.3.1 Printed MTFC Page ............................................................................................ 152.3.2 Export Report .....................................................................................................163.0 Operational Use of the MTFC .......................................................................... 173.1 Test Prof ile Inputs ............................................................................................ 173.1.1 Using the Test Prof ile Inputs Page.............................................................. 183.1.2 Aircraft Parameters ....................................................................................... 183.1.3 Engine Parameters ....................................................................................... 193.1.4 Other Parameters .......................................................................................... 193.1.5 Save Configuration ....................................................................................... 203.1.6 Load Configuration ....................................................................................... 203.1.7 Print Preview/Print ........................................................................................ 213.2 Baseline HIT...................................................................................................... 223.2.1 Using the Baseline HIT Page........................................................................ 233.2.2 Engine Under Test ........................................................................................ 233.2.3 Health Indicator Test Inputs ......................................................................... 233.2.4 Health Indicator Test Outputs ......................................................................243.2.5 Save Configuration ....................................................................................... 243.2.6 Load Configuration ....................................................................................... 243.2.7 Print Preview .................................................................................................253.2.8 Print ................................................................................................................ 253.3 Max Power Check .............................................................................................27


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3.3.1 Using the Max Power Check Page............................................................... 283.3.2 Engine Under Test ........................................................................................ 283.3.3 Max Power Check Inputs .............................................................................. 283.3.4 Max Power Check Outputs ...........................................................................283.3.5 ATF Calculator Inputs ................................................................................... 293.3.6 ATF Calculator Output .................................................................................. 293.3.7 Save Configuration ....................................................................................... 293.3.8 Load Configuration ....................................................................................... 293.3.9 Print Preview .................................................................................................303.3.10 Print ................................................................................................................ 303.4 Autorotat ion Check .......................................................................................... 323.4.1 Using the Autorotation Check Page............................................................333.4.2 Autorotat ion Check Inputs ...........................................................................333.4.3 Autorotat ion Check Outputs ........................................................................ 333.4.4 Additional Inputs ........................................................................................... 333.4.5 Autorotat ion Comments ............................................................................... 343.4.6 Save Configuration ....................................................................................... 343.4.7 Load Configuration ....................................................................................... 343.4.8 Print Preview/Print ........................................................................................ 353.5 Compass Correction ........................................................................................ 363.5.1 Using the Compass Correction Page.......................................................... 373.5.2 Compensating Swing Inputs ........................................................................ 373.5.3 Compensating Swing Outputs ..................................................................... 373.5.4 Residual Swing Inputs .................................................................................. 383.5.5

Residual Swing Outputs............................................................................... 38

3.5.6 Save Configuration ....................................................................................... 383.5.7 Load Configuration ....................................................................................... 383.5.8 Print Preview/Print ........................................................................................ 394.0 Appendix A - MTFC Trouble Report ..................................................................... 40


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TABLE OF TABLES

Table 2-1 Version Information .................................................................................... 10TABLE OF FIGURES

Figure 2-1 About AH-64 MTF-MTFC Dialog ............................................................... 10Figure 2-2 Drop-Down Combination Box .................................................................. 11Figure 2-3 Numeric Keypad Dialog ............................................................................ 12Figure 2-4 Alpha Numeric Keyboard Dialog ............................................................. 12Figure 2-5 Warning Alert Dialog................................................................................. 13Figure 2-6 Errors/Warnings Dialog ............................................................................ 13Figure 2-7 Warnings Dialog ........................................................................................ 14Figure 2-8 Errors Dialog ............................................................................................. 14Figure 2-9 Printed MTFC Page ................................................................................... 15Figure 2-10 Export Report Dialog .............................................................................. 16Figure 3-1 Test Prof ile Inputs View............................................................................ 17Figure 3-2 Date Dialog ................................................................................................ 19Figure 3-3 Test Profi le Inputs Printed Output ........................................................... 21Figure 3-4 Baseline HIT Page View ............................................................................22Figure 3-5 Baseline HIT Check Print Preview Dialog ............................................... 25Figure 3-6 Baseline HIT Check Print Dialog .............................................................. 25Figure 3-7 Baseline HIT Printed Output ..................................................................... 26Figure 3-8 Max Power Check Page View ................................................................... 27Figure 3-9 Max Power Check Print Preview Dialog ..................................................30Figure 3-10 Max Power Check Print Dialog............................................................... 30Figure 3-11 Max Power Check Printed Output .......................................................... 31Figure 3-12 Autorotation Check Page View .............................................................. 32Figure 3-13 Autorotation Check Printed Output .......................................................35Figure 3-14 Compass Correction Page View ............................................................36Figure 3-15 Compass Correct ion Printed Output ..................................................... 39


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1.0 Introduction

The AH-64 Maintenance Test Flight Calculator (MTFC) application automates thecalculations required for specific maintenance test flight procedures for the AH-64A andAH-64D. The Flight Performance Model (FPM) embedded in the MTFC application isbased on performance charts in the applicable Maintenance Test Flight (MTF) Manualand TM 1-2840-248-23.

NOTE

FPMs support various fl ight modes, accept input parameters, checkinputs against predefined limi ts, execute calculations, generateerror/warning messages, and provide results through outputs.

Revisions to the MTFC program and this manual are anticipated in order to conform toupdates to the references used in the development of the FPM. Comments from thefield are encouraged. If you encounter problems with the program, the trouble report in

Appendix A may be completed and faxed to (256) 705-9895, or a trouble report may befilled out online at http://www.aeromech.redstone.army.mil/ . The Help/About dialogcontains a link to this website as well as a link for sending a support email.

1.1 Warnings, Cautions, and Notes

Warnings, Cautions, and Notes are in accordance with the applicable reference manual.

1.2 System Requirements

The MTFC application requires Windows 2000 or Windows XP, 256 KB of RAM, 30 MBof hard drive space, and 1024x768 minimum screen resolution.

1.3 Installation Instructions

The procedures outlined below describe the installation sequence for the MTFCapplication.

1.3.1 Initial Installation

1. From the MTFC installation media, double click on setup.exe.2. Click the OK button

3. Wait for the installation window with the Aviation Engineering logo to open.4. Click the Next button to continue.5. The distribution and authorization screen is displayed next. You must read and

agree to the distribution and usage terms to proceed. Click the Next button tocontinue.

6. The release notes screen is displayed next. Click the Next button to continue.


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7. The installation program will suggest a default destination folder for the application.If you want to change the directory, click the Browse button and select the desired

location.8. Click the Next button to continue.9. Click the Next button to proceed with the installation.10. Click Close to complete the installation.11. Click OK to close the installer.

NOTE

The installer will install certain required system files to your computer. Incertain cases, one or more restarts may be necessary. If this is the case,the installer may again ask you for the installation folder. This is normal;simply repeat the steps above.

1.3.2 Subsequent Installations

1. From the MTFC installation media, double click on setup.exe.2. Click the OK button3. Wait for the installation window with the Aviation Engineering logo to open.4. Select whether you want to repair the software that is already installed or uninstall

the software.5. Click Finish to proceed with the selected option.6. Click Close to complete the installation.7. Click OK to close the installer.

To run the MTFC application, select Start/Programs (Windows 2000) or Start/AllPrograms (Windows XP), then AH64MTFC/FPG-AH64MTF-MTFC.exe.

1.4 Authorized Use

This software is available for download For Official Use Only (FOUO) through thefollowing web site: http://www.aeromech.redstone.army.mil/

An Internet browser with 128-bit encryption is required to access this web site.Registration is required to access the Performance Planning Home Page in order todownload software. Registered users receive update notifications crucial to maintainingthis software via email. Use of out-dated software may be a safety hazard and onlycurrent software should be used.

NOTE

Current notices regarding the use and availability of the software, as wellas the most current Airworthiness Release will be posted at thePerformance Planning section of the Aeromechanics web site.


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1.5 Referenced Documents

TM 1-1500-204-23-4 TECHNICAL MANUAL AVIATION UNIT MAINTENANCE(AVUM) AND AVIATION INTERMEDIATE MAINTENANCE (AVIM) MANUAL forGENERAL AIRCRAFT MAINTENANCE (ELECTRICAL AND INSTRUMENTMAINTENANCE PROCEDURES AND PRACTICES) VOLUME 4

TM 1-1520-238-MTF, Technical Manual MAINTENANCE TEST FLIGHTMANUAL HELICOPTER, ATTACK, AH-64A APACHE

TM 1-1520-251-MTF, Technical Manual MAINTENANCE TEST FLIGHTMANUAL HELICOPTER, ATTACK, AH-64D APACHE

TM 1-2840-248-23 Technical Manual AVIATION UNIT AND INTERMEDIATEMAINTENANCE MANUAL ENGINE, AIRCRAFT TURBOSHAFT MODELS T700-GE-700, T700-GE-701 and T700-GE-701C


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2.0 User Interface

2.1 Menu

The application menu is a standard Windows menu that cannot be undocked or moved.The main MTFC menu is composed of two submenus: File and Help.

2.1.1 File Menu

2.1.1.1

2.1.1.2

2.1.1.3

2.1.1.4

2.1.1.5

Load Configuration

Use the Load Configuration command to open an existing MTFC file. When you choosethe Load Configuration command, the Load Test File dialog appears. Use this dialog

to select the MTFC file you want to load.

Save Configuration

Use the Save Configuration command to save the current state of the MTFC applicationto a file. When you choose the Save Configuration command, the Save Test Casedialog appears. All current input values will be preserved in the saved file. Versioninformation will be written to the file for the FPM and MTFC application. If the filealready exists, a dialog will appear asking if you want to replace the previous version.Selecting Yes will overwrite the previous version and close the Save Test Casedialog. Selecting No will bring you back to the Save Test Case dialog to allow you toselect another file name.

Print

The Print command allows the user to print the calculated MTFC page to a selectedWindows printer. For more information, see the section on printing (section 2.3).

Print Preview

The Print Preview command opens the Print Preview dialog and allows the user topreview and print the calculated MTFC page. For more information, see the section onprinting (section 2.3).

Exit

The Exit command opens the Exit Confirmation dialog. Selecting Yes closes theMTFC application. Selecting No maintains the MTFC application in its current state.


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2.2 Common Page Functions

Each page of the MTFC contains a user interface designed to support a specific

maintenance test flight procedure. Though unique in appearance, the MTFC pagesshare many common functions. This section describes the common functions availableto the user.

NOTE

User interface features unique to a MTFC page are described in detail inthe applicable Operational Use section of this manual (Section 3).

2.2.1 Drop-Down Combination Box

To use a drop-down combo box, place the cursor anywhere in the input cell. Theselection of possible input values is then displayed and the desired input is selected byplacing the cursor on it.

Figure 2-2 Drop-Down Combination Box


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2.2.2 Keypads

To manually populate the MTFC input cells, the cursor must be active in the input cell.

This action will cause either a numeric keypad (Figure 2-3) or alpha numeric keypaddialog (Figure 2-4) to open. Input parameters are defined for each MTFC data input cellon the keypad dialog. Inputting the required information and selecting Enter on eitherkeypad enters the information into the MTFC input cell.

Figure 2-3 Numeric Keypad Dialog

Figure 2-4 Alpha Numeric Keyboard Dialog


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2.2.3 Calculate Button

After all required data is entered, pressing the applicable Calculate button executes all

available calculations for display in the active view

2.2.4 Warnings

After a calculation, output fields in the view may have warnings associated with them.The user is alerted to any warning by the Warning Alert dialog, shown in Figure 2-5.Selecting Yes displays the Errors/Warnings dialog described in 2.2.5. Selecting Noremoves the Warning Alert dialog.

Figure 2-5 Warning Alert Dialog

2.2.5 View Errors/Warnings Button

After any calculation that produces errors and/or warnings, the application will enablethe View Errors/Warnings button. Selecting the View Errors/Warnings button willdisplay the Errors/Warnings dialog, shown in Figure 2-6. The Errors/Warnings dialogdisplays all the errors and warnings produced from the last calculation. The dialog will

indicate the output associated with each message. The File menu allows the user toPrint Preview and/or Print the text or Exit (close) the Errors/Warnings dialog.

Figure 2-6 Errors/Warnings Dialog


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A warning is also indicated by asterisk symbols in the output fields (e.g. Target Nr*110%*). Right clicking any output field with the asterisk symbols and selecting Show

Warning Message(s) from the context menu will display the Warnings dialog shown inFigure 2-7.

Figure 2-7 Warnings Dialog

2.2.6 ErrorsAfter a calculation, output fields in the view may have errors associated with them. Anerror is indicated by the term NOCALC (no calculation) in the output fields and resultsfrom calculations that are beyond applicable reference manual data. Right clicking anyoutput field with a NOCALC value and selecting Show Error Message(s) from thecontext menu will display the Errors dialog shown in Figure 2-8.

Figure 2-8 Errors Dialog

Additionally, the error may be viewed by selecting the View Errors/Warnings buttondescribed in 2.2.5.


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2.3 Printing

The Test Profile Inputs page view and any calculated MTFC page view can be printed.

2.3.1 Printed MTFC Page

An example of a printed MTFC page is shown in Figure 2-9.

Figure 2-9 Printed MTFC Page

Any calculation that results in a warning message for a MTFC page will cause thefollowing message to appear on the printed MTFC page:

* indicates calculations with an associated warning

Additionally, a description of the warning(s) is printed on the MTFC page.


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Any calculation that results in an error message for a MTFC page will cause thefollowing message to appear on the printed MTFC page:

NOCALC indicates calculations that are beyond applicable referencemanual data

NOTE

For any maintenance test flight procedure page, in addition to the printedoutput for the selected page data, a copy of the Test Profile Inputs pagedata is also printed.

2.3.2 Export Report

Select the Print Preview function and press the Export Report button to open the ExportReport dialog (shown in Figure 2-10) to save a copy of the Print Preview data as a .pdf,.xls, .doc or .rtf.

Figure 2-10 Export Report Dialog


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3.0 Operational Use of the MTFC

The operational use of the MTFC is described in detail in this section.

3.1 Test Profi le Inputs

The Test Profile Inputs view is the default page when the MTFC program is first opened.To access additional pages of the MTFC, the user must either manually enter therequired data into the input cells of the Test Profile Inputs page, or select previouslysaved data via the File, Load Configuration function (section 3.1.6).

Figure 3-1 Test Profile Inputs View


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3.1.1 Using the Test Prof ile Inputs Page

The following instructions address the inputs required for the Test Profile Inputs page.

3.1.2 Aircraft Parameters

3.1.2.1

3.1.2.2

3.1.2.3

3.1.2.4

3.1.2.5 PID

3.1.2.6 Unit

A/C Type

Select the appropriate aircraft type. The aircraft type defines the input options andparameters available to meet the requirements of a specific MTF for the applicablepages of the MTFC.

WARNING

Failure to verify the appropiate selection will result in inaccurate

calculations on the Autorotation Check page of the MTFC.

Engine Type

Select the appropriate engine type. The engine type defines the input options andparameters available to meet the requirements of a specific MTF for the applicablepages of the MTFC.

CAUTION

Failure to verify the appropiate selection will result in inaccurate

calculations on the Baseline HIT and Max Power Check pages of theMTFC.

A/C S/N

Manually enter the aircraft serial number or select the aircraft serial number from thedrop-down combination box. The MTFC stores the last ten (10) manually enteredaircraft serial numbers and these are available via the drop-down combination box.

A/C Hours

Enter the aircraft hours.

Enter Personnel Identifier.

Enter unit identification.


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3.1.3 Engine Parameters

3.1.3.1

3.1.3.2

3.1.4.1 Date

S/N (Engine 1 and 2)

Manually enter the engine serial number or select the engine serial number from thedrop-down combination box for engine 1 and 2. The MTFC stores the last ten (10)manually entered engine serial numbers and these are available via the drop-downcombination box for both engine 1 and 2.

Hours (Engine 1 and 2)

Enter the engine hours for engine 1 and 2.

3.1.4 Other Parameters

Current day, month and year. To select an alternate date, see 3.1.4.1.1 below.

3.1.4.1.1 Date Dialog

The day, month and year are automatically set to the operating system calendar. Toselect a different date, press the Date button to use the Date dialog shown inFigure 3-2.

Figure 3-2 Date Dialog


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3.1.4.1.2 Purpose

The user is able to enter a description into the Purpose input textbox. User input will beprinted on the Test Profile Inputs printed form.

3.1.5 Save Configuration

Use the Save Configuration command to save the current state of the Test ProfileInputs to a file with an extension of .tpi. All current input values will be preserved inthe saved file. Version information will be written to the file for the FPM and MTFCapplication. If the file already exists, a dialog will appear asking if you want to replacethe previous version. Selecting Yes will overwrite the previous version and close theSave Test Case dialog. Selecting No will bring you back to the Save Test Casedialog to allow you to select another file name.

3.1.6 Load Configuration

Use the Load Configuration command to open an existing Test Profile Input file (a filewith an extension of .tpi). Select the desired file and press the Open button. Theapplication inputs for the Test Profile Inputs will be retrieved from the chosen file andpopulated on-screen.


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3.1.7 Print Preview/Print

The Print Preview and Print commands allow the user to preview and/or print the Test

Profile Inputs data to a form as shown in Figure 3-3.

Figure 3-3 Test Profile Inputs Printed Output


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3.2 Baseline HIT

e is used to calculate the values required for the health indicator

he user must either manually enter the required data into the

The Baseline HIT pag

test baseline check. Tinput cells, or select previously saved data via the File, Load Configuration function(section 3.2.6).

Figure 3-4 Baseline HIT Page View


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3.2.1 Using the Baseline HIT Page

in conjunction with the procedures and checks as1-2840-248-23. The following instructions

gine 2 via the applicable radio button. The engine serialthose values entered on the Test Profile Inputs page.

Enter 0 (kts) for an on the ground HIT baseline check or the forward airspeed value foran in-flight HIT check.

Enter the indicated pressure altitude.

NOTE

When using the MTFC Basel ine HI the input pressure al ti tude isautomatically rounded off to the nearest value for calculation, if

3.2.3.3 FAT

Enter the indicated free air temperature.

When using the MTFC Basel ine HI the input FAT is automat ical ly

rounded up to the nearest value for calculation, if applicable.

3.2.3.4 Torque

From the drop-down combination box, select 60 % for an on the ground HIT baselinecheck or 62 % for an in-flight HIT check.

The MTFC Baseline HIT page is usedoutlined in the applicable MTFand TMaddress the inputs required to use the MTFC Baseline HIT page to complete thecalculations for the health indicator test baseline check.

3.2.2 Engine Under Test

Select either Engine 1 or Ennumbers (S/N) displayed are

3.2.3 Health Indicator Test Inputs

3.2.3.1 Airspeed

3.2.3.2 PA

T page,

applicable.

NOTE

T page,


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3.2.3.5 ITGT

3.2.4.1

3.2.4.2

3.2.4.3

3.2.4.4

Enter the three indicated TGT values derived from the HIT procedures.

3.2.4 Health Indicator Test Outputs

After all required inputs are completed and verified; pressing the Calculate HIT buttonwill display the following items as calculated by the MTFC.

Avg ITGT

Calculated average indicated TGT.

Table TGT

Calculated table TGT for the input conditions.

TGT Margin

Calculated TGT margin.

TGT Limits (Min and Max)

Calculated minimum and maximum TGT limits.


Use the Save Configuration command to save the current state of the Baseline HIT to afile with an extension of .hce. All current input values will be preserved in the saved

file. Version information will be written to the file for the FPM and MTFC application. Ifthe file already exists, a dialog will appear asking if you want to replace the previousversion. Selecting Yes will overwrite the previous version and close the Save TestCase dialog. Selecting No will bring you back to the Save Test Case dialog to allowyou to select another file name.


Use the Load Configuration command to open an existing Baseline HIT file (a file withan extension of .hce). Select the desired file and press the Open button. Theapplication inputs for the Baseline HIT will be retrieved from the chosen file andpopulated on-screen.


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3.2.7 Print Preview

The Print Preview command allows the user to select which engine(s) data to preview

via the dialog shown in Figure 3-5.

Figure 3-5 Baseline HIT Check Print Preview Dialog

NOTE

Enabling the Print Preview command for the Baseline HIT Check requiresdata calculation for Engine 1 and/or Engine 2.

3.2.8 Print

The Print command allows the user to select which engine(s) data to print via the dialog

shown in Figure 3-6.

Figure 3-6 Baseline HIT Check Print Dialog

NOTE

Enabling the Print command for the Baseline HIT Check requires datacalculation for Engine 1 and/or Engine 2.


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After selecting which engines(s) data to print, the Print command allows the user to printthe calculated Baseline HIT data to a form as shown in Figure 3-7.

Figure 3-7 Baseline HIT Printed Output


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3.3 Max Power Check

The Maximum Power Check page is used to calculate the values required for the

maximum power check. The user must either manually enter the required data into theinput cells, or select previously saved data via the File, Load Configuration function(section 3.3.8).

Figure 3-8 Max Power Check Page View


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3.3.1 Using the Max Power Check Page

The MTFC Max Power Check page is used in conjunction with the procedures and

checks as outlined in the applicable MTF and TM 1-2840-248-23. The followinginstructions address the inputs required to use the MTFC Max Power Check page tocomplete the calculations for the maximum power check.

3.3.2 Engine Under Test

Select either Engine 1 or Engine 2 via the applicable radio button. The engine serialnumbers (S/N) displayed are those values entered on the Test Profile Inputs page.

3.3.3 Max Power Check Inputs

3.3.3.1 PA

3.3.3.2 FAT

3.3.3.3 Ng

3.3.3.4 Airspeed

3.3.3.5 TGT

3.3.3.6 Torque

Enter the pressure altitude.

NOTE

Pressure alti tude must be between 2000 and 10,000 feet to compute theTorque Speed Factor.

Enter the free air temperature.

Enter Ng.

Enter the airspeed value.

Enter the indicated TGT value derived from the maximum power check procedures.

Enter the indicated torque value derived from the maximum power check procedures.

3.3.4 Max Power Check Outputs

After all required inputs are completed and verified; pressing the Calculate MPC buttonwill display the following items as calculated by the MTFC.


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3.3.4.1 TTV

3.3.4.2 ETF

3.3.5.1

3.3.6.1 ATF

Calculated target torque value for the input conditions.

Calculated engine torque factor for the input conditions.

3.3.5 ATF Calculator Inputs

Engine 1 and 2 ETF

For each engine, ETF values are automatically entered from the applicable ETF valuecalculated in item 3.3.4.2 above. If a maximum power check was performed and

calculated for only one engine, manually enter the ETF value for the other engine.

NOTE

If a maximum power check was performed and calculated for both Engine1 and 2, any manually entered ETF value must reflect the calculated ETFvalue f rom 3.3.4.2 above.

3.3.6 ATF Calculator Output

After entering and verifying the ETFs, subject to the limitations in 3.3.5.1, pressing theCalculate ATF button will display the following item as calculated by the MTFC.

Calculated airframe torque factor is the average of the displayed ETF values for Engine1 and Engine 2.


Use the Save Configuration command to save the current state of the Max PowerCheck to a file with an extension of .mce. All current input values will be preserved inthe saved file. Version information will be written to the file for the FPM and MTFC

application. If the file already exists, a dialog will appear asking if you want to replacethe previous version. Selecting Yes will overwrite the previous version and close theSave Test Case dialog. Selecting No will bring you back to the Save Test Casedialog to allow you to select another file name.


Use the Load Configuration command to open an existing Max Power Check file (a filewith an extension of .mce). Select the desired file and press the Open button. The


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application inputs for the Max Power Check will be retrieved from the chosen file andpopulated on-screen.

3.3.9 Print Preview

The Print Preview command allows the user to select which engine(s) data to previewvia the dialog shown in Figure 3-9.

Figure 3-9 Max Power Check Print Preview Dialog

NOTE

Enabling the Print Preview command for the Max Power Check requiresdata calculation for Engine 1 and/or Engine 2.

3.3.10 Print

The Print command allows the user to select which engine(s) data to print via the dialogshown in Figure 3-10.

Figure 3-10 Max Power Check Print Dialog


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NOTE

Enabling the Print command for the Max Power Check requires data

calculation for Engine 1 and/or Engine 2.

After selecting which engines(s) data to print, the Print command allows the user to printthe calculated Max Power Check data to a form as shown in Figure 3-11.

Figure 3-11 Max Power Check Printed Output


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3.4 Autorotation Check

The Autorotation Check page is used to calculate the values required for the

autorotation check IAW the applicable MTF. The user must either manually enter therequired data into the input cells, or select previously saved data via the File, LoadConfiguration function (section 3.4.7).

Figure 3-12 Autorotation Check Page View


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3.4.1 Using the Autorotation Check Page

The MTFC Autorotation Check page is used in conjunction with the procedures and

checks as outlined in the applicable MTF. The following instructions address the inputsrequired to use the MTFC Autorotation Check page to complete the calculations for theautorotation RPM check.

3.4.2 Autorotation Check Inputs

3.4.2.1 PA

3.4.2.2 FAT

3.4.2.3

3.4.2.4

3.4.3.1

3.4.4.1

Enter the test altitude pressure altitude.

Enter the test altitude free air temperature.

Operating GWT

Enter the operating gross weight.

Start Fuel

Enter the total weight of fuel on board at the test altitude.

3.4.3 Autorotation Check OutputsAfter all required inputs are completed and verified; pressing the Calculate Auto buttonwill display the following items as calculated by the MTFC.

Target Nr

Calculated target Nr for the input conditions. The displayed value represents the targetNr and the allowable range of -0% to +3%.

3.4.4 Addit ional Inputs

To complete the requirements of the Autorotation Check procedures, the followingadditional inputs must be entered.

Test Nr

Enter the Nr value indicated upon reaching test altitude at the completion of theautorotation check.


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3.4.4.2 Recorded Fuel

Enter the fuel quantity remaining upon reaching test altitude at the completion of the

autorotation check.

3.4.5 Autorotation Comments

Enter desired data into the Autorotation Comments input textbox. User input will beprinted on the Autorotation Check printed form.


Use the Save Configuration command to save the current state of the Autorotation

Check to a file with an extension of .ace. All current input values will be preserved inthe saved file. Version information will be written to the file for the FPM and MTFCapplication. If the file already exists, a dialog will appear asking if you want to replacethe previous version. Selecting Yes will overwrite the previous version and close theSave Test Case dialog. Selecting No will bring you back to the Save Test Casedialog to allow you to select another file name.


Use the Load Configuration command to open an existing Autorotation Check file (a filewith an extension of .ace). Select the desired file and press the Open button. The

application inputs for the Autorotation Check will be retrieved from the chosen file andpopulated on-screen.


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The Print Preview and Print commands allow the user to preview and/or print the

calculated Autorotation Check data to a form as shown in Figure 3-13.

Figure 3-13 Autorotation Check Printed Output


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3.5 Compass Correction

The Compass Correction page is used to calculate values required for the compass

compensation. The user must either manually enter the required data into the inputcells, or select previously saved data via the File, Load Configuration function (section3.5.7).

Figure 3-14 Compass Correction Page View


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3.5.1 Using the Compass Correction Page

The MTFC Compass Correction page is used in conjunction with the procedures and

checks as outlined in TM 1-1500-204-23-4. The following instructions address theinputs required to use the MTFC Compass Correction page to complete the calculationsfor the compass compensation check.

3.5.2 Compensating Swing Inputs

NOTE

Items 3.5.2.1 and 3.5.2.2 must be repeated for each subsequent actualmagnetic heading and corresponding aircraft compass reading.

3.5.2.1

3.5.2.2

3.5.3.1 Dev.

3.5.3.2

3.5.3.3

3.5.3.4

Actual Head (M)

Enter the actual magnetic heading.

Aircraft Comp. (C)

Enter the aircraft compass reading.

3.5.3 Compensating Swing Outputs

After all required inputs are completed and verified; pressing the Calculate button in the

Compensating Swing Section will display the following items as calculated by theMTFC.

The values in the Dev. Column indicate the calculated deviation between each actualmagnetic heading and respective aircraft compass reading.

Coeff C =

Calculated value of coefficient C.

Coeff B =

Calculated value of coefficient B.

Coeff A =

Calculated value of coefficient A.


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3.5.4 Residual Swing Inputs

NOTE

Items 3.5.4.1 and 3.5.4.2 must be repeated for each subsequent actualmagnetic heading and corresponding aircraft compass reading.

3.5.4.1

3.5.4.2

3.5.5.1 Dev.

3.5.5.2

Actual Head (M)

Enter the actual magnetic heading.

Aircraft Comp. (C)

Enter the aircraft compass reading.

3.5.5 Residual Swing Outputs

After all required inputs are completed and verified; pressing the Calculate button in theResidual Swing Section will display the following items as calculated by the MTFC.

The values in the Dev. Column indicate the calculated deviation between each actualmagnetic heading and respective aircraft compass reading.

Max Dev. = Calculated maximum deviation between all input actual magneticheadings and aircraft compass readings.


Use the Save Configuration command to save the current state of the CompassCorrection to a file with an extension of .cmp. All current input values will bepreserved in the saved file. Version information will be written to the file for the FPMand MTFC application. If the file already exists, a dialog will appear asking if you wantto replace the previous version. Selecting Yes will overwrite the previous version andclose the Save Test Case dialog. Selecting No will bring you back to the Save TestCase dialog to allow you to select another file name.

3.5.7 Load ConfigurationUse the Load Configuration command to open an existing Compass Correction file (afile with an extension of .cmp). Select the desired file and press the Open button. Theapplication inputs for the Compass Correction will be retrieved from the chosen file andpopulated on-screen.


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The Print Preview and Print commands allow the user to preview and/or print the

calculated Compass Correction data to a form as shown in Figure 3-15.

Figure 3-15 Compass Correction Printed Output


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APPENDICES

4.0 Appendix A - MTFC Trouble Report

The trouble report can be used for requesting assistance with installation or use of theMTFC application, reporting errors in the software, or requesting improvements in thesoftware. If you have access to the Internet, you can submit a trouble report online athttp://www.aeromech.redstone.army.mil . The Help/About dialog contains a link to thiswebsite as well as a link for sending a support email. Otherwise, you can print, fill in,and fax the following page.


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U.S. Army Aviation and Missile CommandAeromechanics Division

Aviation Engineering DirectorateAttn: AMSAM-RD-AE-A

Redstone Arsenal, AL 35898

http://www.aeromech.redstone.army.mil/[email protected]

MTFC Trouble Report

To: Aeromechanics MTFC Support

Fax: 256-705-9895

Submitters Name:

Submitters Email:

Submitters Phone

Submitters Unit

MTFC Name / Version:

Description of Problem:
http://www.aeromech.redstone.army.mil/mailto:[email protected]:[email protected]://www.aeromech.redstone.army.mil/