Transcript X-plane

Use of Flight Simulation To
Investigate Aviation Safety Concerns
and Stability & Control Analysis of
the Mooney Rocket 305 and Cessna
172
Douglas Wilson – Chief Test Pilot
Abraham Gutierrez – Chief Systems Engineer
Anh Huy Nguyen – Chief Flight Engineer
Basil Philip – Advisor
Dr. Stearman –Class instructor
ASE 463Q
Spring 2004
Mooney and Cessna Flight Simulation
Investigation
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Background of the Project
Objectives
Software
Data Comparison
Phugoid Mode
Phugoid Analysis
Summary
Background
Background
• Mooney Rocket 305
Objectives
- Engine modification to the Mooney M20K
Software
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Data
Comparison
Phugoid Mode
Phugoid Analysis
Summary
Accident in Bakersfield, CA
Modified engine caused the aircraft to enter a
phugoid mode
• Cessna 172
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Focus is on the Cessna 172H model
Produced in the 1960s
Questions regarding engine power capabilities
Objectives
• Look into the background of the two
flights in question
Background
 Objectives
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Mooney 305
Cessna 172H
Software
• Load Accurate versions of flight models
onto simulators
Data
Comparison
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Phugoid Mode
• Perform test runs at several conditions
Phugoid Analysis
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Summary
X-Plane
Microsoft Flight Simulator
Weather Conditions
Plane configurations
• Compare Radar and Actual Data to
determine if Phugoid Mode can be
demonstrated
Software
Background
• Research
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Objectives
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Software
Data
Comparison
Make sure that the Mooney M20K and the Cessna 172 can
be tested in the flight simulator
Make sure the X-Plane software can be modified to wanted
characteristic
• Setup
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Adjust the X-Plane software to wanted weather conditions
Connect programs to extract data
Phugoid Mode
Phugoid Analysis
• Tests
Summary
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Conduct several test to obtain sufficient data for analysis
Verify that the data is obtain is accurate and useful
Data Comparison
Background
• Code
Objectives
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Use a Matlab program to analyze our data
Compare our data obtain from our code to the data obtain
from previous code
Software
Data
Comparison
Phugoid
Mode
• Airplane Modifications
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Adjust the airplane tail
Compare data obtain from the adjust airplane to the airplane
of interest
• Data Analysis
Phugoid Analysis
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Summary
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Analyze velocity versus time of the Mooney M20K at
different altitudes & weather
Look for the Phugoid Mode for different conditions
Phugoid Mode
Background
• Motivation
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Low-frequency, lightly damped oscillation
Software
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Aircraft becomes dynamically unstable
Data
Comparison
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Reproduce data to see where phugoid mode occurs to verify if
this contributed to the crashes
Objectives
Phugoid
Mode
Phugoid Analysis
Summary
Phugoid Analysis
• Method
Background
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Extract data from simulator and compare with
previous results
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Use Wavelet and Fourier Transform to see
Phugoid mode
Objectives
Software
Data
Comparison
Phugoid
Mode
Phugoid Analysis
Summary
Slide taken from ASE 463Q Prospective Presentation
Summary
Background
• Background
Objectives
Software
Data
Comparison
Phugoid
Mode
• Load Models into Flight Simulator
and Run Tests
• Analyze Data and Plot to Compare
Phugoid Analysis
with Previous Results
Summary