EGTS™ – Greener Than We Thought

A study by an independent consulting firm indicates that the EGTS taxiing system being developed by Honeywell and Safran is even “greener” than previous estimates predicted.

In fact, a third-party study found that the annual use of EGTS on an A320 aircraft at an American airport is the “equivalent of planting up to 948 trees for carbon dioxide savings and eliminating 932 automobiles for nitrogen oxides reductions.”

Conducted earlier this year by Envisa, a global environmental consulting company specializing in sustainable aviation, the study concluded that “EGTS can form a useful and important component to abating aircraft ground roll emissions by introducing cleaner electric taxiing operations.”

Estimates suggest that airlines can reduce their total fuel consumption by as much as 4 percent per flight through the use of the EGTS electric taxiing procedures. EGTS delivers significant reductions in carbon and nitrogen emissions, according to the Envisa study. Carbon monoxide emissions are reduced by 73 percent, carbon dioxide by 61 percent and nitrogen oxide by 51 percent.

“Honeywell and our JV partner Safran are obviously pleased to learn that the benefits of the EGTS system surpass our earlier estimates,” said Brian Wenig, EGTS Program Vice President for Honeywell Aerospace. “Because an aircraft’s main engines were designed for flying rather than taxiing, they burn a disproportionate amount of fuel – and leave a large environmental footprint – during ground operations.

Developed by EGTS International, a joint venture between Honeywell and Safran launched in 2011, the EGTS technology uses the Auxiliary Power Unit (APU) generator to power motors on the main wheels. This lets the aircraft push back without a tug and then taxi without requiring the use of the main aircraft engines.

Click here to view an animated video on the environmental benefits of EGTS.

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