Automated Flight Data Management System for ...

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Khadeeja Nusrath TK. Scientist. Modeling & Identification. FMCD,NAL. Automated Flight Data. Management System for. Aircraft System Identification. (AFDMS) ...
Automated Flight Data Management System for Aircraft System Identification (AFDMS) Khadeeja Nusrath TK Scientist Modeling & Identification FMCD,NAL



Introduction :System Identification



Flight Test Data Gathering



Why AFDMS?



Role of AFDMS in system identification



Challenges in Development



Overview Of Data Management System



Implementation



How MATLAB® is useful?



Features & Advantages



Conclusions

Dynamic System(f)

“Look at the results and try

to figure out what situation caused these results”

1. System Identification concerned with mathematical structure of flight vehicle.

2. Parameter Estimation Quantifying of parameters for a selected flight vehicle model 3. Simulation Fixed flight vehicle model and parameters

“If it is not in the Data it cannot be Modeled” (RV Jategaonkar)



Flight test efforts towards     

Handling qualities evaluation Safe Flight Envelope Expansion Aero Database Validation & Update Performance Analysis Air Data Calibration



Different configurations (slat, airbrake,….)



Flight conditions (altitude, speed,….)



Variety of maneuvers (longitudinal, lateral,…)



Weapon stations (external stores)



Different prototypes

Flight Test

Flight test matrix for system identification

Test point tracking

AOA

ENVELOPE PLOT

Aero database update

Performance analysis

Flight data pool

Mach

>5000 segment >1500 test points >20 configurations 10 prototypes

Role of AFDMS in System Identification Flight Test Point Matrix

Flight Path Reconstruction

Flight data pre-processing

Airdata Calibration, Aerodata Validation, Performance Analysis,..

Time Synch. + maneuver extraction

Classification according to aircraft config. Slats/UC/Airbrakes/ Mach

Data Management System

model validation



 





Extensive flight testing for envelope expansion and certification Flight test tracking for different applications Large number of flight conditions, maneuvers and store configurations on different prototypes Extremely complex set of data from different sources and sensors Minimize the users effort to retrieve and analyze the data of interest

Overview of AFDMS MS ACCESS®

DATA STORAGE UNIT

DATA ENTRY RETREIVAL & USER QUERY

DATABASE FOR TESTPOINTS

GRAPHICAL USER INTERFACE

DATABASE FOR FLIGHT DATA

DATABASE FOR ESTIMATION RESULTS MATLAB®

TESTPOINT TRACKING

PLOTS & REPORT GENERATION DATA PRE-PROCESSING







DATA STORAGE UNIT (DATA BANK) - Flight Test data Files in ASCII/MAT format DATABASE engine main modules - Microsoft® ACCESS™ Database for Flight data: Relevant information about flight trim conditions, configuration, aircraft, control inputs, maneuvers ,Flight no,…



Database for Test points: Test matrix for all configurations.



Database for Estimation Results: Results from parameter estimation/modeling





User Front end -MATLAB® Graphical User Interface (GUI) MATLAB® Interactive modules - Database Tool Box™ Data source interact with standard windows® ODBC driver.

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Report generator Data analysis and visualization functions SQL programming Automated data entry/retrieval



MATLAB® is widely used for aircraft data analysis /processing and visualization



Interfacing between database engine and MATLAB® SQL programming



Query generation, report generation and automation through M-file coding



A stand alone software for data management as well as data analysis /processing

Alpha (rad) Laoa (rad) Raoa (rad)

0.6

2

mach

ax (m/sq.sec)

3

1

0.2 0 0

20

0 0

40 60 time (sec)

20

40 60 time (sec)

20

40 60 time (sec)

1500

20 10

fuel (kg)

pstk (mm)

0.4

0 -10

1000

500

-20

0

10

20

30

40 Time (sec)

50

60

70

Time response plot of alpha from different sources

0

20

40 60 time (sec)

0 0

Different signal from maneuver concatenation

alpha (rad)

Test Point Tracking & Documentation

beta (rad)

Lateral Flight Data Coverage

Report generation

Automatic test point tracking

Quick look graphs of any data segments Generates data files for Estimation package

Easily configura ble for any aircraft

Parameter estimation results

Auto generation of envelope coverage

Queries for the user requireme nt

THANK YOU

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