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Douglas Wilson – Chief Test Pilot Abraham Gutierrez – Chief Systems Engineer

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

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Douglas Wilson – Chief Test Pilot Abraham Gutierrez – Chief Systems Engineer

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  1. 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

  2. Mooney and Cessna Flight Simulation Investigation • Background of the Project • Objectives • Software • Data Comparison • Phugoid Mode • Phugoid Analysis • Summary

  3. Background • Mooney Rocket 305 -Engine modification to the Mooney M20K - Accident in Bakersfield, CA • Modified engine caused the aircraft to enter a phugoid mode • Cessna 172 • Focus is on the Cessna 172H model • Produced in the 1960s • Questions regarding engine power capabilities • Background Objectives • Software • Data • Comparison • Phugoid Mode • Phugoid Analysis • Summary

  4. Objectives • Look into the background of the two flights in question • Mooney 305 • Cessna 172H • Load Accurate versions of flight models onto simulators • X-Plane • Microsoft Flight Simulator • Perform test runs at several conditions • Weather Conditions • Plane configurations • Compare Radar and Actual Data to determine if Phugoid Mode can be demonstrated • Background • Objectives Software • Data • Comparison • Phugoid Mode • Phugoid Analysis • Summary

  5. Software • Research - 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 - Adjust the X-Plane software to wanted weather conditions • Connect programs to extract data • Tests -Conduct several test to obtain sufficient data for analysis - Verify that the data is obtain is accurate and useful • Background • Objectives • Software • Data • Comparison • Phugoid Mode • Phugoid Analysis • Summary

  6. Data Comparison • Code - Use a Matlab program to analyze our data - Compare our data obtain from our code to the data obtain from previous code • Airplane Modifications - Adjust the airplane tail • Compare data obtain from the adjust airplane to the airplane of interest • Data Analysis - Analyze velocity versus time of the Mooney M20K at different altitudes & weather - Look for the Phugoid Mode for different conditions • Background • Objectives • Software • Data Comparison • Phugoid • Mode • Phugoid Analysis • Summary

  7. Phugoid Mode • Motivation - Low-frequency, lightly damped oscillation • Aircraft becomes dynamically unstable - Reproduce data to see where phugoid mode occurs to verify if this contributed to the crashes • Background • Objectives • Software • Data • Comparison • Phugoid Mode • Phugoid Analysis • Summary

  8. Phugoid Analysis • Method • Extract data from simulator and compare with previous results - Use Wavelet and Fourier Transform to see Phugoid mode • Background • Objectives • Software • Data • Comparison • Phugoid • Mode • Phugoid Analysis • Summary Slide taken from ASE 463Q Prospective Presentation

  9. Summary • Background • Load Models into Flight Simulator and Run Tests • Analyze Data and Plot to Compare with Previous Results • Background • Objectives • Software • Data • Comparison • Phugoid • Mode • Phugoid Analysis • Summary

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