EMASMAX ® – New Developments FAA Technology Transfer Conference April 21-23, 2010 Atlantic City, NJ Presenters: Dr. Hong Zou – R&D Director Ms Silvia Valentini – Sr. Tech Advisor ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Successful Arrestment at Yeager Airport Courtesy of Yeager Airport

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS What is EMAS?  A bed of cellular cement blocks placed at the end of a runway to safely decelerate an overrunning aircraft in an emergency  Passive system that will reliably and predictably crush under the weight of an aircraft

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS EMAS Operation  Material crushes under weight of traversing aircraft.  Tire/material interface provides resistive loads to decelerate the aircraft  Loads are placed on the aircraft landing gear and support structure  Material is engineered to minimize potential for landing gear collapse.

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS EMAS Characteristics  FAA Advisory Circular AC150/  Up to 70-kt arrestment capability  Three strength options: 50, 60, and 80  Jet Blast Resistant bed components Cellular core material Top surface Seam seal Side coating Vents Steps vents seam seal side coating top surface

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS EMASMAX ® Recent Developments ENGINEERED ARRESTING SYSTEMS CORPORATION  EMAS performance under extreme cold condition  EMAS field strength testing

Grey area is for photos Part I: Arctic Weather Performance Part II: Field Strength Test Method Development

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Major Objectives of Cold Climate Testing  Evaluate the long term durability of the EMAS through twenty (20) years of simulated cycling from extreme cold to warm temperatures.  Evaluate the effect of temperature and humidity cycling on EMAS material strength.  Evaluate the effect of extreme cold temperature on plastic top durability.  Evaluate the effect of extreme cold temperature on silicone seal durability and adhesion. ENGINEERED ARRESTING SYSTEMS CORPORATION Research was conducted under Cooperative Research and Development Agreement with the FAA.

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Thermal cycling simulated 20 yrs arctic weather ENGINEERED ARRESTING SYSTEMS CORPORATION Arctic Durability Testing: An EMAS bed was installed inside a “Room size Environmental Chamber” with Temperature changes between -20ºF to +67ºF. Cycle: Two weeks into cold and two weeks into warm temperature simulated a 20 yrs exposure to arctic climate.

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Details of Installation ENGINEERED ARRESTING SYSTEMS CORPORATION Thermocouples were inserted at different height inside some blocks; as well as moisture sensors in the gaps.

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Example of a Temperature Record ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Infrared Image of Bed Surface During Cold Cycle ENGINEERED ARRESTING SYSTEMS CORPORATION Block -- Seam

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Evaluate Effect on Core Material Strength Block NumberPre-Test MeasurementPost-Test Measurement Average Std. Deviation

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Post Examination of Core Material Integrity ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Evaluate Properties of the Top Surface 0.5 lbs 3.3 lbs

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Evaluate Properties of Other Components ENGINEERED ARRESTING SYSTEMS CORPORATION Top Material Seal Tape Caulk

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Extreme Cold Weather Testing Summary  “CRREL testing showed that the EMAS system tolerated the cold cycling well, with little change in strength and subsequently little or no change in expected performance. The silicone seals, adhesive, and lid materials also showed little change in durability and performance.  Based on these results, it was concluded that the current EMAS configurations durability, performance, and expected life will not be significantly impacted if installed in an extreme cold weather location and properly maintained.” * * B.A. Coutermarsh. EMAS Cold Weather Performance Investigations. ERDC/CRREL Letter Report 08-09, October, ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Field Strength Test (FST) Method  FST tolerance band development Test apparatus and instrumentation Material selection Correlations between FST and PTM FST 60-strength tolerance band  Field testing method Sample size determination Random sampling method Test procedure Data presentation ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Test Apparatus and Instrumentation  In-House Test Apparatus (PTM)  Field Strength Tester (FST) Temp range: 32~122 ºF Resolution: 0.2 lb Ultrasonic distance measurement Speed indicator Real-time resistive load curve Download data to computer for later analysis ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS In-House Testing Effort  Material Selection Hundreds of blocks of various sizes tested Cover whole range of production line Forty EMAS blocks for formal 60- strength analysis  Tested the same samples with PTM and FST ENGINEERED ARRESTING SYSTEMS CORPORATION

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Correlations between FST and PTM ENGINEERED ARRESTING SYSTEMS CORPORATION  Significant correlations Large sample size High coefficient of correlation  Equivalent to PTM  Margin of error

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Field Testing Effort in Development Stage ENGINEERED ARRESTING SYSTEMS CORPORATION  Used to assess conditions of EMAS beds during development o BGM, ROC, POU, HYA, LRD, BUR, BTR…

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS Field Testing Method ENGINEERED ARRESTING SYSTEMS CORPORATION  Sample size determination Precision level Confidence level Strength variability  Random sampling method  Minimal damage to bed  Test data presentation

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS FAA Approval on FST Method ENGINEERED ARRESTING SYSTEMS CORPORATION  Written approval given by the FAA on July 15, 2009  ESCO-ZA’s FST method is ready for use on installed EMAS.  ESCO-ZA’s FST method is currently the only approved method available.

AEROSAFETY & TECHNOLOGY / EMERGENCY ARRESTING SYSTEMS ENGINEERED ARRESTING SYSTEMS CORPORATION Courtesy of Stantec