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Emergency Mask (EM)

Emergency Mask (EM). Integrating MBSE Into Ongoing Projects: Requirements Validation and Test Planning for ISS SAFER, AIAA Annual Technical Symposium, May 18, 2012, G. Pierce/T. Williams. Emergency Mask. EM Design is based on heritage mask already in service with DoD …

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Emergency Mask (EM)

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  1. Emergency Mask (EM) Integrating MBSE Into Ongoing Projects: Requirements Validation and Test Planning for ISS SAFER, AIAA Annual Technical Symposium, May 18, 2012, G. Pierce/T. Williams

  2. Emergency Mask EM Design is based on heritage mask already in service with DoD… with a change in hood material to improve flammability resistance and permeation resistance, but… Gore hood • One size fits all • Seals at the neck • Dual bayonet connectors accommodate either: • Two Fire Cartridges • Two 3M Ammonia Cartridges • Hardware Overview Visor Adjustable head strap Butyl Rubber Neckdam Inhalation port (2x) w/ keyed bayonet fittings The hood material touches almost every interface in the mask Exhalation port Emergency Mask without Cartridges (Front) Emergency Mask with Fire Cartridges (Side)

  3. Qualification/Acceptance Tests Performed Prototype testing covered every high risk test planned for qualification testing… Fabrication WSTF A Visor/Gasket Leak Inhale/Exhale Valve Test Leakage Test (Water) Leakage Test (Salt) Neckdam Stretch Test PDA/PIA WSTF B Molten Drip After Flame Thermal Cycle Don/Doff Cycle Test (7 cycles) Qual1 Salt Water Neckdam Salt Water Neckdam Salt Water Neckdam Key: WSTF C Molten Drip After Flame Thermal Cycle Don/Doff Cycle Test (7 cycles) Ammonia Permeability Salt Water Neckdam Salt Water Neckdam Salt Water Neckdam Qual2 Molten Drip After Flame Thermal Cycle Don/Doff Cycle Test (7 cycles) Salt Water Neckdam Salt Water Neckdam Water Salt Neckdam Qual3 Post-test evaluation was digital, rather than analog Thermal Cycle Don/Doff Cycle Test (7 cycles) Salt Water Neckdam Qual4 JSC Activity Cartridge Cantilever Pull Hood Strap Pull Thermal Cycle Don/Doff Cycle Test (28 cycles) Cartridge Axial Pull Cartridge Torque Protection Factor Demos Salt Water Neckdam Salt Water Salt Water Salt Water Neckdam Salt Water Salt Water Qual5 Gentex Activity WSTF Activity Depress/ Repress Inhalation Resistance Field of Vision Exhalation Resistance CO2 Buildup Functional Tests (as required) Qual6 Outside Vendor Neckdam Stretch Leakage Test (Water) Leakage Test (Salt) Possibly Destructive

  4. Lessons/Summary

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