Contrails are a major factor in aviation's contribution to climate change, but a UK company is trying to prevent much of the impact by slightly changing the path of certain flights.
On a clear day, with the right weather conditions, a portion of the sky busy with commercial flights can become riddled with contrails, the wispy ice clouds that form as jet aircraft fly by. They might look innocuous, but they’re not – contrails are surprisingly bad for the environment.
“There are obviously very tight limits on flight time: we have to stay within five minutes of the original intended arrival time. That’s non-negotiable,” Durant says. As for fuel use, Durant aims to either have no impact on consumption, or keep it within tenths of a percent of the regular flight plan. “If a particular flight has a 0.1 or 0.2% fuel penalty to save potentially hundreds of tons of CO2, that’s fairly negligible but the benefits are huge.
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