Biological agent detection with the use of an airborne biosensor

The ability to identify aerosolized bacteria remotely with the use of a sma ll unpiloted, all-electric aircraft was demonstrated. Swallow, an aircraft custom-built for the purpose of air-particle collection, was catapult-launc hed, flown by line of sight for 20-min missions, and recovered by landing o n a short runway. Once airborne, the sensor payload, which included a parti cle collector, fluidics control unit, and biosensor, was activated. The sen sor utilized was the Analyte 2000 fiber optic biosensor, which performs fou r simultaneous fluorescent sandwich immunoassays on the surface of tapered optical probes. Five-minute test cycles were conducted continuously and mon itored at the ground station until the plane returned. Then Swallow and its sensor payload could be ready for additional flights within 30 min of land ing. During the trial, Swallow successfully collected and identified an aer osolized bacterial sample. (C) 1999 John Wiley & Sons, Inc.*