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【范围】
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This SAE Aerospace Recommended Practice (ARP) describes the continuous sampling and analysis of gaseous
emissions from aircraft gas turbine engines. The measured gas species include carbon monoxide (CO), carbon dioxide
(CO
2
), nitric oxide (NO), nitrogen dioxide (NO
2
), hydrocarbons (HC) and water vapor (H
2
O). This ARP excludes engine
operating procedures and test modes, and is not intended for in-flight testing, nor does it apply to engines operating in the
afterburning mode.
It is recognized that there will probably be major advances in the gas analysis measurement technology. It is not the
intent of this ARP to exclude other analysis techniques, but to form the basis of the minimum amount of conventional
instruments (those in common industry usage over the last fifteen years) required for the analysis of aircraft engine
exhaust. It is the responsibility of the analyst to demonstrate the alternative measurement technology has comparable (or
better) performance than the techniques described in this ARP.
The measurement of other exhaust gas species is beyond the scope of this ARP.
It should be noted the measurement of oxygen (O
2
) is generally accepted as essential for assessing data quality, but is
not covered by this ARP. Sulfur dioxide (SO
2
) is normally not measured using conventional systems but is calculated from
fuel sulfur content. Again this is not covered by this ARP.strRefField
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