| 摘要 |
A method and system for controlling climate impact of an aircraft engine 10 comprising a location determination system determining a plurality of the engine locations 34 during a current or planned flight, an ozone sensitivity determination system determining ambient air sensitivity to ozone production at the locations, a deployment control system assessing a value of one or more current or future engine operation variable at the locations under a normal operation condition and outputting a revised value or threshold for the variable in order to reduce NOx output by the engine if ozone sensitivity exceeds a predetermined value. Preferably the variable is combustion temperature, fuel flow or composition, throttle setting, etc; the determination system reads ambient ozone, 42, NO2, 44, HO2, 46, OH, 48, H2O, 50 concentration or sunlight (UV) level, 52; a comparator assesses positive and negative climate impact resulting from deployment of a NOx reduction system. Figure 4 illustrates a process 28 calculating the net benefit 30 attributable to a proposed level of deployment 32 of a NOx reduction measure with a flight section. |
