Avionics

Bio Protection

Overview - JetAir™ Cabin Air Management Systems
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A breath of fresh air for passengers and crew

THE CHALLENGE
Controlling an aircraft's internal atmosphere so as to provide the highest levels of comfort, safety and health for passengers and crew, independently of a widely varying and sometimes hostile environment outside the aircraft, is a complex undertaking. “Airborne pathogens (AP) consist of airborne particles (bioaerosols) generated by coughing or sneezing persons with infectious disease, as well as with their normal breathing and talking, that remain airborne for a period of hours to days. These airborne particles typically range from perhaps 1 to 8 μm in diameter, and can contain viable fungi, bacteria, or virus suspended in respiratory secretions” according to American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), Occupancy densities (OD), as well as ventilation rate per person (V), are important factors affecting AP exposure with a higher OD increasing exposure for the same V in both intermodal transportation and building environments. In this regard transportation systems such as trains, buses and passenger aircraft ODs are uniquely high in comparison with OD in public buildings such as theatres and classrooms. The diversity of sources and lack of immunity to the various AP exposures encountered in passenger aircraft with the intermixing of persons from different population centres and continents is unique in comparison with other transportation systems with the exception of cruise ships, or with other high OD venues such as subway cars, theatres and classrooms where the occupants tend to be from one geographic region.

INDUSTRY RESPONSE
The aviation industry has recognized the need for standards for air quality in mid and large-size aircraft. Led by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), this major effort has culminated in the 2005 release of "Standard 161, Air Quality within Commercial Aircraft”. Most recently, ASHRAE  has launched a Study of Influences of HVAC on Airborne Pathogen Transmission in Public Spaces and Development of Effective Control Strategies.

SOLUTIONS
The JetAir™ Bio-Protection System (BPS) uses innovative technologies to manage these complexities while achieving new levels of performance in terms of cabin air quality and comfort on a wide range of aircraft types. The JetAir™ Bio-Protection System (BPS) effectively and economically addresses many of the unfulfilled needs in this area.