59th American Helicopter Society International Annual Forum 2003
Phoenix, Arizona, USA
6 – 8 May 2003
Volume 1 of 3
ISBN: 978-1-61782-934-5 Printed from e-media with permission by:
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Copyright© (2003) by the American Helicopter Society International All rights reserved.
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Volume 1
INTEGRATED MANUFACTURING PROCESS & CONTROL TECHNOLOGY I – COMPOSITES TECHNOLOGY
Environmental Noise Modelling for UK Military Helicopter Training Operations...... 1 R. Munt, R. Browne, C. Simpson, S. Bradley, Y. Lam, G. Kerry, R. Beaman
ACOUSTICS
Longitudinal-Plane Simultaneous Non-Interfering Approach Trajectory Design for Noise Minimization ...... 14 G. Gopalan, M. Xue, E. Atkins, F. Schmitz
Design and Analysis of High-Frequency Periodically Layered Isolators with Passive Design Enhancement for Helicopter Gearbox Isolation ...... 32 J. Szefi, E. Smith, G. Lesieutre
Transonic Helicopter Noise...... 46 A. Morgans, S. Karabasov, A. Dowling, T. Hynes
Near Real-Time Simulation of Rotorcraft Acoustics and Flight Dynamics...... 56 K. Brentner, L. Lopes, H. Chen, J. Horn
Helicopter Acoustic Characterization by Simulation: Comparison with Flight Test Results and Predicted Impact of New Design Solutions...... 71 R. Ponza
AERODYNAMICS I – APPLIED AERODYNAMICS
Experimental Characterization of the Transition Bubble on a NACA0012 Oscillating Airfoil...... 86 E. Berton, C. Maresca, D. Favier
Dynamic Stall Measurements and Computations for a VR-12 Airfoil with a Variable Droop Leading Edge ...... 96 P. Martin, K. McAlister, M. Chandrasekhara, W. Geissler
Estimating Blade Section Airloads from Blade Leading-Edge Pressure Measurements...... 114 J. Aken
Calculation of Rotor Performance and Loads Under Stalled Conditions...... 135 H. Yeo
Aerodynamic Design of a New Affordable Main Rotor for the Apache Helicopter...... 150 R. Ram, R. Smith, B. Charles, A. Hassan
Effect of Airfoil Wall Temperature on the Performance of Micro-Rotorcraft...... 167 J. Kim, N. Koratkar
AERODYNAMICS II – COMPUTATIONAL FLUID DYNAMICS
Analysis of Vorticity Confinement for Compressible Flows ...... 178 M. Costes, G. Kowani
Toward a Better Understanding of Ducted Rotor Antitorque and Directional Control in Forward Flight...... 191 E. Alpman, L. Long, B. Kothmann
A Non-Linear Indicial Method for the Calculation of Unsteady Airloads...... 204 D. Lee, J. Leishman, J. Baeder
Ice Accretion Computations for Full Tiltrotor Configurations ...... 232 J. Narramore, P. Tran, G. Baruzzi, W. Habashi, I. Akel, S. Balage
Simulation of Unsteady Rotor-Fuselage Interactions Using Unstructured Adaptive Meshes...... 240 Y. Park, H. Nam, O. Kwon
Validation of UH-60A Rotor Blade Aerodynamic Characteristics Using CFD ...... 251 J. Sitaraman, J. Baeder, I. Chopra
Towards Affordable CFD Simulations of Rotors in Forward Flight -- A Feasibility Study with Future Application to Vibrational Analysis...... 268 H. Ven, O. Boelens
AERODYNAMICS III – WAKES AND VORTICES
Predictions of Transient Rotor Wake Aerodynamics in Response to Time-Dependent Blade Pitch Inputs...... 285 S. Ananthan, J. Leishman
First-Principles Free-Vortex Wake Analysis for Helicopters and Tiltrotors...... 307 D. Wachspress, T. Quackenbush, A. Boschitsch
The Interdependence of Straining and Viscous Diffusion Effects on Vorticity in Rotor Flow Fields...... 331 M. Ramasamy, J. Leishman
Helicopter Rotor Response to Wake Encounters in Ground Effect ...... 346 G. Whitehouse, R. Brown
Development of Unsteadiness in the Wake of a Rotor in Ground Effect ...... 362 T. Saijo, B. Ganesh, A. Huang, N. Komerath, S. Bhattacharya, D. Pulla, A. Conlisk
AIRCRAFT DESIGN I
Design & Development of a Thrust Augmented Entomopter: An Advanced Flapping Wing Micro Hovering Air Vehicle...... 370 M. Tarascio, I. Chopra
Development of an Advanced Singletilt Disc System VTOL Aircraft...... 388 S. Yassini, G. Syrovy
Application of an Integrated Decision Support System for Mid-Life Upgrade of Helicopters ...... 400 R. Kusumo, A. Sinha, D. Schrage
Application of a Probabilistic Design Environment to the Mission Requirements and Technologies for a Heavy Lift Helicooper ...... 410 A. Baker, D. Mavris, D. Schrage
Evaluation of Low Cost Unmanned Aerial Vehicle Comprised of Commercial-Off-The-Self Components as a Testbed for Military Research and Development...... 420 T. Watson Jr.
A Rapid Geometry Generator for Rotorcraft Exploratory Design with Computational Fluid Dynamics ...... 428 R. Narducci, J. Hirsh, T. Grandine, J. Vandenbrande, T. Hogan
UNCONVENTIONAL VTOL AIRCRAFT DESIGN SPECIAL SESSION
A Safe and Fuel-Efficient VTOL "Personal Aircraft" ...... 438 K. Milde Jr., A. Pruszenski Jr., J. Wagner
AIRCRAFT DESIGN II
Lastest Developments in Fluidlastic® Lead-Lag Dampers for Vibration Control in Helicopters ...... 446 P. Jones, D. Russell, D. McGuire
Advanced Technologies for High Performance NH90 Blades...... 456 P. Rauch, C. Quillien
Design of New EUROCOPTER Medium Twin Helicopter EC145...... 468 A. Humpert
High Stiffness ("Rigid") Helicopter Pylon Vibration Isolation Systems...... 485 D. McGuire
Design of an Integrated Servo-Flap Main Rotor...... 495 F. Wei
Composite Fuselage Design Synthesis...... 506 D. McCarthy, E. Walliser
Modelling Dynamic Rollover and Related Lateral Responses ...... 516 A. Cooke
AVIONICS & SYSTEMS I
Mobile Commander's Associate for AMUST-D...... 551 P. Stiles, C. Bodenhorn, K. Galamback
Comanche Situational Knowledge: A Consolidated Network View of the Battlefield: Maximizing the Versatility of the Tass Target Threat Manager...... 563 W. Maselko, J. Gustin
Enhanced Ground Proximity Warning System (EGPWS) for Helicopters ...... 572 Y. Ishihara, D. Bateman, S. Johnson
Obstacle (AND) Terrain Avoidance and Mapping Sensor for Helicopters and Other Aircraft ...... 575 H. Niv
Neural Network Estimation of Low Airspeed for the V-22 Aircraft in Steady Flight ...... 591 N. Bi, D. Haas, M. Morales
AVIONICS & SYSTEMS II
Improving Army Aviation Situational Awareness with Agent-Based Data Discovery ...... 602 P. Gerken, S. Jameson, B. Sidharta, J. Barton
Manned/Unmanned Common Architecture Program (MCAP) ...... 609 D. Wilkins
New Glass Cockpit and Avionics System Benefits for the New EC/225/725 Cougar Helicopter...... 616 S. Germanetti, J. Cognet, M. Godard, M. Lanteaume, V. Saintagne
Future Trends in Air Vehicle Systems Development...... 625 C. Dabundo, J. Mitchell
CRASH SAFETY I – CRASH SIMULATION
Comparisons of the Impact Responses of a 1/5-Scale Model and a Full-Scale Crashworthy Composite Fuselage Section...... 637 K. Jackson, E. Fasanella, K. Lyle
The Development of Cost Effective Tools for the Design of Crashworthy Helicopter Structures ...... 649 D. Delsart, J. Charles, J. Sobry, V. Lassus, Y. Chauveau
Application of Probability Methods to Assess Crash Modeling Uncertainty...... 658 K. Lyle, A. Stockwell, R. Hardy
Efficient Helicopter Skid Landing Gear Dynamic Drop Simulation Using LS-DYNA...... 666 C. Tho, M. Smith, C. Sparks, C. Johnson, A. Sareen
Creation of an MSC/DYTRAN Landing Gear Model with Rigid-Body Joint Modeling...... 679 C. Walters
Validation of Concepts for Improved Occupant Crash Safety in Helicopters...... 687 A. Johnson, M. Lutzenburger, J. Hoffmann, B. Steeger
Water Impact Test and Simulation of a Composite Energy Absorbing Fuselage Section...... 697 E. Fasanella, K. Jackson, C. Sparks, A. Sareen
CRASH SAFETY II – CRASH DESIGN FEATURES
The Evolution of Energy-Absorbing Systems for Crashworthy Helicopter Seats...... 717 S. Desjardins
Reduction of Lumbar Loading and Pelvic Acceleration in the TH-57 Using Cushioning Material ...... 743 R. Testerman
Analysis of a Helicopter Tail Landing Gear System Featuring Electrorheological Fluids...... 747 Y. Choi, N. Werely
Volume 2
CREW STATIONS & HUMAN FACTORS
Pilot Attitudes on Glass and Traditional Cockpits in the U.S. Army's AH-64 Apache Helicopter...... 759 C. Rash, G. Adam, P. Leduc, G. Francis
Apache Longbow Integrated Crew Systems: Taking Complexity Out of Radio Communications ...... 783 K. Dunlap
A Systems Methodology to Define Mission Capabilities for Helicopter Emergency Medical Operations ...... 789 M. Momin, A. Sinha, R. Kusumo, P. Hogan, K. Laycock
Lessons Learned from Operation Enduring Freedom: Implications for CV-22 ...... 798 J. Tatro, M. Hargis, M. Magness
DYNAMICS I – VIBRATION CONTROL
Closed-Loop Control Test of the NASA/Army/MIT Active Twist Rotor for Vibration Reduction...... 810 S. Shin, C. Cesnik, S. Hall
Risk Reduction Flight Test of a Pre-Production Active Vibration Control System for the UH-60M...... 828 T. Millott, J. Wong, R. Goodman, W. Welsh, J. Correia, C. Cassil
A High-Order, Time Invariant, Linearized Model for Application to HHCc/FCS Interaction Studies...... 836 R. Cheng, M. Tischler, R. Celi
Vibration Attenuation Through the Use of Active Frahms...... 850 J. Heilman, D. Swanson, A. Badre-Alam
DYNAMICS II – ROTOR STABILITY/AEROMECHANICS MODELING
Aeroelastic Stability of a Four-Bladed Semi-Articulated Soft-Inplane Tiltrotor Model ...... 861 M. Nixon, C. Langston, J. Singleton, D. Piatak, R. Kvaternik, L. Corso, R. Brown
Hybrid Magnetorheological Elastomeric Lag Dampers for Helicopter Stability Augmentation...... 870 W. Hu, N. Wereley
Performance of Swashplateless Ultralight Helicopter Rotor with Trailing-Edge Flaps for Primary Flight Control...... 882 J. Shen, I. Chopra, W. Johnson
Rotorcraft Vibration Reduction and Noise Prediction Using a Unified Aeroelastic Response Simulation ...... 893 D. Patt, L. Liu, P. Friedmann
Validation of Structural and Aerodynamic Modeling Using UH-60A Flight Test Data ...... 908 A. Datta, I. Chopra
Coupled Rotor-Fuselage Analysis with Finite Motions Using Component Mode Synthesis...... 923 O. Bauchau, J. Rodriguez, S. Chen
FLIGHT SIMULATION I – SHIPBOARD OPERATIONS
Dynamic Interface Simulation of Rotorcraft Shipboard On-Deck Operation...... 934 H. Kang, C. He, H. Saberi
A High Fidelity Simulation Model for Comprehensive Analysis of Rotorcraft Towing Operations ...... 946 H. Xin, C. He
Minimum Airwake and Quiescent Motion Indicator Simulator Test Results ...... 964 B. Ferrier, J. Duncan, T. Manninng
Simulation of Helicopter Shipboard Launch and Recovery with Time-Accurate Airwakes...... 975 D. Lee, N. Sezer-Uzol, J. Horn, L. Long
Development and Validation of an On-Deck Helicopter Manoeuvring Simulation ...... 994 R. Langlois, A. Feldman, D. Linn, A. Tadros
Low Cost Sensory Substitution for Effective Helicopter Training ...... 1006 R. Gilson, C. Brill, T. McDermott, W. Grigson
FLIGHT SIMULATION II – ROTORCRAFT MODELING
Investigation of Wake Curvature Dynamics for Helicopter Maneuvering Flight Simulation...... 1009 J. Zhao, J. Prasad, D. Peters
High Fidelity Helicopter Simulation Using Free Wake, Lifting Line Tail, and Blade Element Tail Rotor Models...... 1024 S. Spoldi, P. Ruckel
Identification of Helicopter Dynamics Based on Flight Data Using Recurrent Neural Networks: A Comparative Study...... 1031 M. Kumar, S. Suresh, S. Omkar, R. Ganguli, P. Sampath
An Autorotation Flight Director for Helicopter Training...... 1038 E. Bachelder, B. Aponso
HANDLING QUALITIES I
Evaluation of Limited Authority Attitude Command Architectures for Rotorcraft ...... 1050 R. Hoh
Piloted Evaluation of Modernized Limited Authority Control Laws in the NASA-AMES Vertical Motion Simulator (VMS) ...... 1068 V. Sahasrabudhe, E. Melkers, A. Faynberg, C. Blanken
Piloted Evaluation of a UH-60 Mixer Equivalent Turbulence Simulation Model...... 1092 J. Lusardi, C. Blanken, M. Tischler
Simulation Evaluation of V-22 Degraded-Mode Flying Qualities ...... 1104 J. Weakley, K. Kleinhesselink, D. Mason, D. Mitchell
HANDLING QUALITIES II
Development of Mission-Task Elements for V/STOLS ...... 1116 D. Mitchell, J. Weakley, K. Kleinhesselink, D. Mason
Progress in the Development of Complementary Handling and Loading Metrics for ADS-33 Manoeuvres...... 1126 M. Pavel, G. Padfield
Load Alleviation in Tilt Rotor Aircraft Through Active Control; Modelling and Control Concepts ...... 1139 B. Manimala, M. Naddei, P. Rollet
Damage Mitigating Control of Rotorcraft...... 1158 D. Bridges, J. Horn, A. Ray
Fuzzy Logic Detector for Aircraft Pilot Coupling and Pilot Induced Oscillation ...... 1170 G. Jeram, J. Prasad
INTEGRATED MANUFACTURING PROCESS & CONTROL TECHNOLOGY I – COMPOSITES TECHNOLOGY
Development and Testing of a Low-Cost Integrated RTM Horizontal Stabilizer...... 1178 J. Hethcock, L. Coyle, S. Goodwin, J. Andrews, M. Dearman, D. Armstrong
Development of a Low-Cost UAV Fuselage Using VARTM Technology...... 1187 R. Jones, P. Chiou, J. Andrews, K. Cominsky
Compliant Composite Part Machining ...... 1195 R. Moore
Rotary Wing Structures Technology Demonstration of Tool-less Assembly...... 1204 D. Sandy, C. Rogg
Case Study: Zero Volatile Organic Compound Topcoat Applications Sikorsky Aircraft Helicopters...... 1215 T. Rose
INTEGRATED MANUFACTURING PROCESS & CONTROL TECHNOLOGY II – METALS TECHNOLOGY
Reduced Leadtimes for Forged Helicopter Parts-RAPIDTOOL Program...... 1223 R. Shivpuri, K. Agarwal, D. Mathur, J. Lembo, W. Harris
Manufacturing Process Optimization as an Integrated Solution in CATIA...... 1229 P. Bender, P. Renton, T. Lee, T. Elwardany, M. Elbestawi, W. Harris, P. Darcy
Design Tool for Large Monolithic Structural Parts...... 1235 A. Saunders III
Case Study -- Mechanistic Feed Scheduling for Multi-Axis Machining of Titanium...... 1242 W. Harris Jr., S. Melkote
Process Development Through Simulation...... 1249 M. Russell
Improving Titanium Machining Processes...... 1256 N/A
HEALTH & USAGE MONITORING SYSTEMS (HUMS) I – OPERATIONAL RESULTS
Rotor Smoothing and Vibration Monitoring Results for US Army VMEP...... 1257 P. Grabill, T. Brotherton, B. Branhof, J. Berry, L. Grant
Helicopter Transmission Diagnostics Using Constrained Adaptive Lifting...... 1275 P. Samuel, D. Pines
Safety Factors and Risk in Usage Monitoring and Fatigue Substantiation of Helicopter Components ...... 1286 N. Toulas, P. Irving
Vibration Monitoring Techniques Investigated for the Monitoring of a CH-47 Swashplate Bearing...... 1298 P. Grabill, J. Keller
HEALTH & USAGE MONITORING SYSTEMS (HUMS) II – HUMS TECHNICAL
A Probability-Based Approach to Helicopter Track and Balance...... 1308 S. Wang, K. Danai
Spiral Bevel Pinion Crack Detection in a Helicopter Gearbox ...... 1318 H. Decker, D. Lewicki
Vibration Monitoring of UH-60A Main Transmission Planetary Carrier Fault...... 1329 J. Keller, P. Grabill
Threshold Assessment of Gear Diagnostic Tools on Flight and Test Rig Data...... 1340 P. Dempsey, M. Mosher, E. Huff
Rotordynamic Fault Diagnostics Using Phase Coherent Filtering ...... 1359 J. Pooley III, S. Murray
HEALTH & USAGE MONITORING SYSTEMS (HUMS) III – OPERATIONAL RESULTS
Challenges in Developing and Fielding an Interoperable Vehicle Health and Diagnostics System ...... 1364 R. Hess, H. Hollon, C. Carter, A. Duke
HUMS Development, Integration and Certification on the S-92A Aircraft...... 1374 R. Guessner, J. Cycon
A Satellite Data Link for HUMS Applications ...... 1381 L. Natoli, S. Buckley, D. Monopoli, D. Haas
Application of a Dependency-Model-Based Health Inference and Troubleshooting Strategy to a HUMS-Enabled Advanced Maintenance Concept...... 1391 A. Mathur, D. Haste, C. Domagala
Aviation Diagnostic and Engine Prognostic Technology (ADEPT) for the Chinook's T-55 Engine...... 1401 A. Stramiello, G. Kacprzynski eROTOR: A Windows CE Portable Flight Management Computer (FMC)...... 1408 M. Augustin, W. Shaw, D. Yeary, M. Pai
OPERATIONS
A Helicopter Flight Data Monitoring (FDM) Program...... 1418 B. Larder
Los Angeles County Fire Department's Acquisition of the Sikorsky Firehawk ...... 1444 V. Benson
The European Initiative on Civil Rotorcraft UAVs Within the CAPECON Program ...... 1457 S. Mouritsen, J. Boer, C. Sevin
PRODUCT SUPPORT
Rapid Deployment Initiative for the AH-64 Apache Longbow Helicopter ...... 1468 J. Veselovsky
United States Army T55-L-712 Gas Turbine Engine Torquemeter System Test Improvements ...... 1476 W. Cass, G. Echols
PROPULSION I – ENGINE INSTALLATION
The Nutating Engine - The Ideal Heavy Fuel Powerplant for Small UAVS ...... 1507 P. Meitner, M. Boruta
Integration of the RTM322 Into the WAH-64 Apache: A Model for Future Re-Engining ...... 1511 G. Volk
Mature Engine Reliability at In-Service Introduction - An Innovative Philosophy...... 1519 S. Bailey, P. Jones, H. Smailys, R. Trumper
Recommended Methodology for Army Helicopter Turbine Engine Component Vibration Qualification Testing ...... 1527 M. Wheeler
Volume 3
The Effects and Analysis of Backlash on Rotorcraft Torsional Stability...... 1533 J. Mattice, S. Spears, E. Hauter
PROPULSION II – ROTORCRAFT MODELING
Characterization of the Flow and Pressure Drop in Honeycomb Inlets with Grazing Flow ...... 1551 J. Keffler, A. Ortega, B. Bouldin
Recent Developments in Gas Turbine Engine Simulator Utility ...... 1562 P. Kedrowski, R. Wahl, E. Clark
Enhanced Turbine Engine Diagnostic System (ETEDS)...... 1570 S. Spring, A. Pisano, R. Wong, T. Baker, B. Baldwin, A. Mathur
Development of a Real-Time Labview-Based Testbed for Implementation of Planetary Gear Diagnostic Algorithms...... 1574 J. Conroy, P. Samuel, D. Pines
Experimental High Temperature Characterization of a Magnetic Bearing for Turbomachinery ...... 1582 G. Montague, M. Jansen, R. Jansen, B. Ebihara, A. Provenza, A. Palazzolo
Efficiency of High-Speed Helical Gear Trains ...... 1594 R. Handshuh, C. Kilmain
PROPULSION III – DRIVE TRAIN
Face Gear Transmission Development Program at Sikorsky Aircraft ...... 1606 D. Binney, H. Vinayak, Y. Gmirya, L. Zunski, D. Houser, E. Ames
Characterization of Flexible Matrix Composite Rotorcraft Driveshafts ...... 1614 E. Shin, K. Wang, E. Smith
The Development of a Fiber-Reinforced Titanium Matrix Composite Low Pressure Turbine Shaft for Turboshaft Engines ...... 1622 S. Spring, W. Kurz, K. Krishnamurthy, M. Peterson, H. Merrick, R. Ravenhall, B. Smith
STRUCTURES & MATERIALS I
Composite Tension-Torsion Load Cell ...... 1627 S. Agarwal, I. Kim, S. Dancila
The Development of a Durability & Damage Tolerance Qualification Methodology for Military Rotorcraft...... 1635 M. Portanova
STRUCTURES & MATERIALS II
Damage Tolerance in Helicopters Report on the Round Robin Challenge...... 1642 P. Irving, J. Lin, J. Bristow
Fatigue Life Analysis of Helicopter Dynamic Components in the U.S. Army Lead the Fleet Program ...... 1653 M. McFalls, D. White, E. Wagner
Non–Homogeneous Composite Beams Under Tip Loading ...... 1659 M. Grebshtein, M. Kazar, V. Rovenski, O. Rand
Damage and Failure Analysis of Co-Cured Fiber-Reinforced Composite Joints with Quasi-Isotropic Lay-Up...... 1670 C. Cao, D. Dancila
U.S. Army - Boeing's Rwstd -- Static Test and Non-Linear Analysis Correlation ...... 1680 D. Wilke, D. McCarthy
A Study of the Retirement Data for Rotorcraft Dynamic Components ...... 1690 E. Martin, F. Rumph
Modelling of Multiple Damages for a Fail Safe Evaluation of Helicopter Structures...... 1707 W. Berczynski
Life Predictions for High Cycle Dynamic Components Using Damage Tolerance and Small Threshold Cracks...... 1712 R. Vaughan, J. Chang
TEST & EVALUATION I
Open Loop Flight Test Results and Closed Loop Status of the IBC System on the CH-53G Helicopter ...... 1721 C. Kessler, D. Fuerst, U. Arnold
HART II Blade Motion Measured by Stereo Pattern Recognition (SPR)...... 1739 O. Schneider, B. Wall, K. Pengel
FHS - Experimental System for Flying Helicopter Simulator Put Into Operation ...... 1753 B. Gelhaar, H. Oertel, K. Alvermann, M. Bodenstein, R. Gandert, S. Graeber, H. Schwaneck
Getting a Primary Fly-By-Light Control System Into Flight...... 1762 N. Bickel, U. Butter, M. Hammerlindl, W. Eichberger
Flight Testing of the Eurocopter EC145...... 1781 C. Ockier
TEST & EVALUATION II
Machine Vision Based Position Measurement for Autonomous Low Speed Flight ...... 1791 C. Oertel
"Digital" SMA-Based Tracking Tabs for One-Per-Rev Vibration Reduction ...... 1799 R. McKillip Jr.
Measured Aerodynamic Interaction of Two Tiltrotors ...... 1827 G. Yamauchi, A. Wadcock, M. Derby
Low Cost/Low Airspeed Sensor for Helicopter Applications...... 1839 S. Mangalam, G. Sarma, M. Augustin, D. Yeary
UNINHABITED VTOL AIRCRAFT & ROTORCRAFT I – INTELLIGENT AUTONOMY ARCHITECTURES
Software Architectures for Robots Capable of Intelligent Autonomy: A Survey of the State of the Art...... 1848 R. Burridge
Team Communication Among Airborne Agents...... 1859 M. Gerla, Y. Yi, K. Xu, A. Moshfegh
Intelligent Autonomy for UAVS...... 1868 A. Pawlowski, L. Pridmore, J. Franke, R. Higgins
A Markov Decision Process Approach to Human/Machine Function Allocation in Optionally Piloted Vehicles...... 1873 C. Miller, R. Goldman, H. Funk
Autonomous UAV Team Planning for Reconnaissance Missions...... 1888 R. Szczerba, D. Garrison, N. Ternullo
An Architecture for Multi-Vehicle Autonomy with Small UAVS ...... 1900 B. Bamberger, J. Bruzek, H. Gilreath, T. Gion, K. Grossman
Formation Reconfiguration for Autonomous Vehicles...... 1908 T. Koo, S. Zelinski, S. Sastry
UNINHABITED VTOL AIRCRAFT & ROTORCRAFT II – INTELLIGENT AUTONOMY CONTROL DESIGN
Rotorcraft Autonomous Navigation System...... 1914 J. Jakeway
Envelope Protection in Autonomous Unmanned Aerial Vehicles...... 1919 I. Yavrucuk, S. Unnikrishnan, J. Prasad
Statistical Verification for UAV Autonomy...... 1930 P. Binns, M. Elgersma, V. Ha, T. Samad
Variable Autonomy Control System (VACS) and Supporting Technologies Overview ...... 1937 D. Duggan, B. Pate
A Revolutionary Control Framework for UAVS and Other Embedded Systems...... 1963 J. Paunicka, W. Koenig, B. Mendel
A Modeling Methodology for Manned and Manned and Unmanned Aircraft in a Close Airspace Environment ...... 1970 D. Schrage, D. Stringer
The NASA/Army Autonomous Rotorcraft Project...... 1976 M. Whalley, M. Takahashi, G. Schulein, M. Freed, D. Christian, A. Patterson-Hine, R. Harris
Situational Awareness Through Airborne Manned and Unmanned System Technology ...... 1990 B. Moreland, M. Ennis
An Exploration of Discontinuous Time Synchronous Averaging Using Helicopter Flight Vibration Data...... 2000 E. Huff, M. Mosher, E. Barszcz
ROTORCRAFT DEVELOPMENT LESSONS LEARNED
Mil Helicopters in the Chernobyl Nuclear Disaster...... 2012 A. Belov, G. Karapetian, M. Rozhdestyvenskiy, A. Siafukov, M. Tishcenko
UNCONVENTIONAL VTOL AIRCRAFT DESIGN SPECIAL SESSION
AHS Forum 59 - Special Session Unconventional VTOL Aircraft Designs (UVADs) The Next Generation CarterCopter (NxCC): Transformational Technology for a Paradigm Shift in VTOL Aviation ...... 2024 J. Carter Jr.
High Speed VTOL Aircraft using PARWINGTM Technology (Parallel Axis Rotary WING)...... 2056 M. LaBiche
The X-Hawk VTOL Utility Vehicle...... 2092 R. Yoeli
A Dual-Fan VTOL Aircraft Using Opposed Lateral Tilting for Pitch Control...... 2120 G. Gress
The First Human Powered Hover: The Human Powered Helicopter Project...... 2143 W. Patterson
STOVL CONCEPTS
Italian V/STOL Concepts of the Twentieth Century...... 2161 M. Hirschberg, T. Muller, E. Pinero
An Examination of Selected Problems in Rotor Blade Structural Mechanics and Dynamics Analysis...... 2177 A. Hopkins, R. Ormiston
Opposed Lateral Tilting (OLT) for Hover Pitch Control...... 2198 G. Gress
The Georgia Tech VTOL UAV Testbed – the GTMAX, as an Open System for Uav Research and Development...... 2213 D. Schrage, E. Johnson
Evaluation of Low-Noise, Improved-Bearing-Contact Spiral Bevel Gears...... 2219 D. Lewicki, R. Woods
Technology Assessment and Transition Management (TATM): Improving Technology Transition and Reducing Risk in Fielding New Aviation Technologies ...... 2240 S. Parker, R. Brown, J. Cox, M. McDaniel
Biodynamic Response Mitigation to Shock Loads Using Magnetorheological Seat Suspensions ...... 2269 Y. Choi, N. Wereley
"Personal Aircraft"(TM): Safe in VTOL Mode, Fuel-Efficient in FF Mode, Mechanically Simple ...... 2282 N/A
Author Index