IHSS – Montreal, Canada September 2005

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Enhancing Aircraft Survivability through Implementation of Lightweight On-Board Inert Gas Generating Systems (OBIGGS). IHSS Montreal, Canada September 2005. Classification Level UNCLASSIFIED Briefing. Presentation Outline. Current Platforms with OBIGGS Aircraft Survivability Chain - PowerPoint PPT Presentation


<ul><li><p>Enhancing Aircraft SurvivabilitythroughImplementation of Lightweight On-Board Inert Gas Generating Systems (OBIGGS)IHSS Montreal, CanadaSeptember 2005</p><p>Classification Level UNCLASSIFIED Briefing</p></li><li><p>Presentation Outline Current Platforms with OBIGGS Aircraft Survivability Chain What is The Risk Addressing The Risk Comparative Review of Available Technologies OBIGGS Technology Overview Aircraft Parameters Drive OBIGGS Sizing Non-Developmental OBIGGS Solutions OBIGGS Maintenance and Logistics Briefing Summary</p></li><li><p>OBIGGS Equipped Aircraft</p></li><li><p>Aircraft Survivability Chain</p><p>Avoid detection</p><p>Avoid engagement</p><p>Avoid damageCrash worthinessOBIGGS</p></li><li><p>What Is The Risk Fuel Tank Ullage Explosive Mixture of Fuel-Rich Vapors and AirFuel vapor can cause catastrophic damage9 - 12% oxygen limit Protect Against Enemy Ground Fire Threat Protect Against Static/Electrical Discharge Properly Address the Avoid Damage Segment of the Aircraft Survivability Chain</p></li><li><p>Typical Aircraft SurvivabilityAircraft requirements call for ballistic tolerance.Fuel System is always a major issueAddresses the Avoid Damage segment of the Aircraft Survivability ChainSelf-sealing fuel tanks are typically implemented.</p><p>Does Not Provide a Complete Solution</p></li><li><p>Properly Addressing The Risk Major Issue - Self-Sealing Fuel Tanks Not Sufficient OBIGGS Required to Address Explosive Nature of Fuel Tank Vapors High Aircraft Vulnerability based on Fuel Tank Volume and Location. Requirements Need to Properly Address A Solution Incorporate Wording for Self Sealing Tanks and Fuel Tank Vapor ProtectionVapor Protection Gets OBIGGS</p><p>Self-Sealing Fuel Tanks + OBIGGS = Full Protection!!</p></li><li><p>Comparative Review ~ Available TechnologiesReticulated FoamFlexibleLowers Fuel Tank CapacitySignificant Weight IncreaseMaintenance ImpactTake foam out problemsHazardous material disposalDegrades over time</p><p>HalonOzone-Depleting ChemicalLogistics and MaintenanceOne time useBanned by Montreal ProtocolResearch for Friendly OptionsLiquid NitrogenWeight Savings Over FoamHazardousMajor Logistics ImpactHuge tail One time use</p><p>Gaseous NitrogenHeavier Than LiquidHigher Pressure - Safety</p><p>OBIGGSUnlimited Nitrogen SupplyLow Weight SystemLow Life Cycle CostNegligible Logistics Impact</p></li><li><p>Molecular Sieve OBIGGS TechnologyOptimal Performance ~ Low Pressure 15-40 psig &amp; Temp. 30-120 oFPhysical Separation ~ Not Chemical Utilizes Molecular Sieve Zeolite CrystalApplies Pressure Swing Adsorption ProcessSame Process used for On-Board Oxygen Generating System (OBOGS)</p></li><li><p>Molecular Sieve OBIGGS ProcessPR/SO - press reducer shut-off valve</p></li><li><p>Molecular Sieve OBIGGS ProcessMolecular Sieve In Concentrator Beds. Cycling Valve Controls Charge and VentPressure Swing Adsorbtion (PSA) ProcessStep A:Bed 1: Pressurize with air through inlet-- O2 adsorbed, N2 passes through check valve to outlet.Bed 2: Exhaust, O2 desorbed &amp; vented through inlet. Step B:Bed 1: Exhaust, O2 desorbed &amp; vented through inlet. Bed 2: Pressurize with air through inlet-- O2 adsorbed, N2 passes through check valve to outlet.</p></li><li><p>Hollow Fiber Membrane OBIGGS TechnologyOptimal Performance ~ High Pressure (35-55 psig) &amp; Temp. (160-200 oF)Multiple Base PolymersPhysical Separation Process ~ Not ChemicalSelective Permeation Through Separating LayerInlet AirShut-Off ValveHFMCheck ValveFilterWaste GasOxygen Monitor93-99 % N2</p></li><li><p>Aircraft Parameters Drive OBIGGS SizingFuel Tank Capacity and UllageInitial Inerting Goal Protection Time to InertVent System Pressurization (Climb / Dive Valve Settings)Rate of Descent</p><p>System Trades Drive Technology Selection and Requirements Compromise</p></li><li><p>Non-Developmental OBIGGS Solutions Helicopter ApplicationsAttack/Combat Search &amp; Rescue/UtilityTotal Integrated Weight ~ 30 to 40 PoundsAir Consumption ~ 1 Pound/Minute MaximumMulti-Mission Cargo/TransportTotal Integrated Weight ~ 50 to 60 PoundsAir Consumption ~ 2 Pound/Minute</p></li><li><p>Non-Developmental OBIGGS SolutionsMilitary Cargo/Transport ApplicationsTotal Integrated Weight ~ 250 - 400 PoundsAir Consumption ~ 7 - 16 Pounds/MinuteImplement Through Modular Air Separation Modules</p></li><li><p>OBIGGS Maintenance/Logistics Operational to Depot Level Support Inlet Air Filter Only Scheduled Maintenance Action Interval Approx. 1,000 Hour Interval Include In Planned Aircraft Maintenance 10-15 Minute Maintenance Action No GSE or Special Tools Required Estimated Yearly Support Costs/100 AircraftBased on 20 Operational Hours/Month/AircraftLess Than $1,000 Per Aircraft/Year</p></li><li><p>Briefing SummaryCritical to Address Explosive Nature of Fuel Tank Ullages.Self-Sealing Fuel Tanks Does Not Completely Address Ballistic Tolerance OBIGGS and Self-Sealing Fuel Tanks Are ComplimentaryIncorporate Adequate Verbiage in Requirements Documents Fuel Tank Vapor ProtectionOBIGGS ~ Technically Feasible &amp; Realistic for Todays Aircraft</p></li><li><p>Contact Information:</p><p>Robert DemidowiczBusiness Development Manager Carleton Life Support SystemsTelephone: 563-383-6310E-Mail: rdemidowicz@carletonls.comThank You!</p><p>View of aircraft survivability - Chain. 3</p></li></ul>


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