Aircraft environmental control system
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United States of America Patent
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Nov 1, 2016
Grant Date -
N/A
app pub date -
Jul 22, 2011
filing date -
Jul 22, 2011
priority date (Note) -
In Force
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Abstract
An environmental control system for an aircraft. The environmental control system is powered by engine bleed air. A primary turbocharger is provided that includes a first turbine and a first compressor. The first turbine is powered by the engine bleed air. The first compressor draws ambient air and creates a first compressed air supply without ever exposing the first compressed air supply to the engine bleed air. A secondary turbocharger is provided that has a second compressor and an expansion turbine. The second compressor further compresses the first compressed air supply to create a second compressed air supply. A heat exchanger is provided that cools the second compressed air supply to create a cooled compressed air supply. The cooled compressed air supply powers the expansion turbine. This causes the cooled compressed air supply to losing both heat and pressure to become a conditioned air supply.
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