Simulation and Research Services Division Patuxent River Maryland

Simulation and Research Services Division Patuxent River, Maryland Roger Burton Program Manager 301 -866 -6715 roger. a. burton@saic. com MEETING No. 99 AEROSPACE CONTROL AND GUIDANCE SYSTEMS COMMITTEE Millennium Harvest House Boulder, CO. Feb 28 – Mar 2, 2007

History • Supporting the Navy at Patuxent River since 1970’s as Systems Control Technology- Acquired by SAIC in 1994 • Local Office opened in 1983 • Air Vehicle Support (AVS) Contract (AFTTECH) since 1983. – We are the aero & controls SMEs for Pax

Technical Capabilities • Flight Simulator Development and Acceptance • Simulation/Stimulation technology – Real-time and physics based modeling – Hardware and software • Flight Test Support – Planning – Execution – Analysis-Specializing in Systems Identification • Modern Controls/Optimization – UAV Control Systems – Control analysis – IV&V – Specification Compliance – Handling qualities

Roll In/ Roll Out Capability V-22 High Fidelity Simulator 6 Degree Of Freedom Motion Platform M 2 DART Platform

Present/Past Projects at NAWCAD • Simulation Support (F-18, V-22, S-3, C-130, AH-1 W) • Blade Element Modeling (AH-1 W, CH-53, UH-1 N, CH-47 F, SH-60 R/S ) • Trainer Model Development (AH-1 W, F-14 A/B, CH-53 E, UH 1 N, C-130 H 2/T, CH-47 F, SH-60 R) • Flight Control Hardware Support (SAFCS, S-3, V-22, F-18, EA-6 B) • UAV Support (SAIC Fixed and R/W a/c, Hunter and Pioneer) • Handling Qualities Expert System Development • Flight Control IV&V • Systems Identification • Simulation Mechanical Design • Flight Test Support

Special Instrumentation Systems SIMES • SIMES is an instrumentation system specifically designed to measure simulator cueing systems and their fidelity. • Measures bandwidth, transient performance, and time delays as well as compares predicted results to actual results for fidelity analysis. • Motion system, cockpit controls and visual system 1000 Hz Operation H/W Anti-aliasing Analog Digital and Video Processing High Performance Data Acquisition Provided as product or a service to our customers

Special Purpose Analysis Systems IDEAS • IDEAS - Integrated Data Evaluation and Analysis System – A “High-End” Data Analysis and Simulation Tool – Expert System IDEAS Integrated Data Evaluation and Analysis System Data Archiving Flight Test Data Wild-Point Editing Data Processing and Reconstruction Intuitive X-Window Motif User Interface Kinematic Consistency Analysis Electronic Archive Equation Error, Output Error, and Filter Error System Identification C lp Statistical and Math Routines MATLAB, User Developed Routines Math Model Improvement Interface to CIFER and other analysis Data Display and Plot Utilities On-line Help Utilities tools

IDEAS - System Identification and Model Fidelity y y - ys ys Iterative Process System Identification Procedure Estimates of System Parameters

Current UAV Flight Test Program Ground Tests –Engine / Prop Gov Dynamics –TO / Landing • Flying Qualities ITB –Doublets –Freq Sweeps –Pitch Captures –Wheel / Pedal Bank to Bank –Static Stability • High AOA –Stalls –WUTs • Hinge Moment ITB –Doublets • Airborne Engine Tests –Power Lever Bodes –Level Flight Accel. Decel

Current Data Processing

Example Frequency Sweep Elevator Deflection

Current Data Processing

Our Specialty-Simulation Model Fidelity Systems Identification Parameter Identification Flight Test Flight Prev. PID 0. 1 50. 40. 0. 0 -0. 1 Cl p -0. 2 (per rad) -0. 3 30. 20. -0. 4 P -0. 5 10. 0. 0 - 10. -0. 6 0 5 10 15 20 25 30 35 40 45 50 55 angle-of-attack (deg) Analyze the Flight Data - 20. - 30. - 40. - 50. 0. 1. 2. 4. 5. 6. 7. 8. 9. 1 0. TIME solid - PID IDEAS 3. dashed - Prev. dot-dash - Flight Update the Simulation Model M Simulate the Flight Test SI Data Acquisition ES A Continuous Integrated Process

FCS Design and Development Cycle GCS Upgraded Control System HWIL Flight Test Data Acquisition Data archiving, analysis, reduction IDEAS/CIFER Equivalen t system models Systems Identification High-Fidelity Non-linear Model MATLAB/Simulink, Conduit, etc. Control Law Development Regression testing & Acceptance Non-linear Control Law Implementation SWIL

Flight Control Algorithms • Common architecture across all platforms • Layered control concept

Summary • Heavy Simulation and Stimulation Support of NAWCAD, specializing in: – Physics based simulation modeling – Control system design and analysis – Flight test support • Training simulator model development specialists –make the sim. fly like the a/c • Systems developer for specialized simulation systems – SIMES -simulation instrumentation & testing – IDEAS – flight test and simulation analysis • UAV Control Systems Development