AIRCRAFT BRAKE USAGE INDICATOR SYSTEM

NAVAIR HAS EXPRESSED INTEREST IN THE DEVELOPMENT OF A DEVICE WHICH MEASURES AIRCRAFT BRAKE USAGE. PDI PROPOSES TO DESIGN A BATTERY POWERED, MICROCONTROLLER BASED SYSTEM TO MEASURE BRAKE HYDRAULIC PRESSURE AND WHEEL SPEED OF ROTATION. THE PRODUCT OF THESE VARIABLES WILL BE INTEGRATED OVER THE TIME OF AN AIRCRAFT STOP TO ESTIMATE THE TOTAL ENERGY ABSORBED BY THE BRAKE. THIS WILL PROVIDE THE SYSTEM WITH THE ABILITY TO DISTINGUISH BETWEEN LOW ENERGY, NORMAL, AND HIGH ENERGY STOPS AND TO ACCUMULATE THE NUMBER OF STOPS IN EACH CATEGORY. THE TECHNICAL OBJECTIVE OF PHASE I IS TO DEMONSTRATE THE FEASIBILITY OF DEVELOPING THE PROPOSED AIRCRAFT BRAKE USAGE INDICATOR. THIS WILL BE ACCOMPLISHED THROUGH THE PRELIMINARY DESIGN OF BOTH THE HARDWARE AND SOFTWARE REQUIRED FOR SUCCESSFUL IMPLEMENTATION OF THE SYSTEM. TASK 1 OF THE PROJECT WILL ESTABLISH THE REQUIREMENTS FOR THE SYSTEM. A PRELIMINARY DESIGN OF THE SYSTEM WILL BE PREPARED IN TASK 2 INCLUDING SELECTION OF THE MICROCONTROLLER, SENSORS, AND BATTERY. SYSTEM SOFTWARE WILL BE DEVELOPED AND DEMONSTRATED IN TASK 3. PACKAGING FOR THE SYSTEM WILL BE DESIGNED IN TASK 4. DOCUMENTATION PREPARED IN TASK 5 WILL CONSIST OF A DESCRIPTION OF THE SYSTEM, BLOCK DIAGRAMS, SCHEMATIC DIAGRAMS, SOFTWARE DOCUMENTATION, AND EVALUATION OF THE FEASIBILITY OF THE SYSTEM, AND RECOMMENDATIONS FOR PHASE II. AN APPENDIX TO THE FINAL REPORT WILL CONTAIN THE DESIGN DRAWINGS AND SPECIFICATIONS REQUIRED TO BUILD PROTOTYPE UNITS FOR INSTALLATION AND TESTING ON NAVY AIRCRAFT IN PHASE II.