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> They claim improvements in fuel efficiency and their unique selling point (apart from the speed advantage) is the use of "green" fuels (whatever that implies)

> They claim improvements in fuel efficiency and their unique selling point (apart from the speed advantage) is the use of "green" fuels (whatever that implies). Also, see previous point: they don't want to be mainstream anyway. That seems a logistical issue to me. Airport fueling services have Jet A/A1. So airlines buying Boom will have to arrange contracts to supply these "green" fuels at service destinations?

fancy_pantser 5y ago
They've been using Prometheus Fuels (a YC-backed company with further investment from US DOE and BMW i Ventures) thus far, starting with a 2019 deal. It will probably be up to United as to how they fuel the aircraft once in service, but they are basically touting that it is using a carbon-neutral fuel source all through R&D and Prometheus is using Boom to show that it can produce A1 (or possibly JP-8 with additives) in some new ways starting with ethanol and renewable energy sources. https://www.globenewswire.com/news-release/2019/06/18/1870486/0/en/Boom-Supersonic-Partners-with-Prometheus-Fuels-to-Supply-Carbon-Neutral-Fuel-for-XB-1-its-Mach-2-2-Demonstrator-Aircraft.html https://www.globenewswire.com/news-release/2019/06/18/187048... https://www.greencarcongress.com/2020/09/20200916-prometheus.html https://www.greencarcongress.com/2020/09/20200916-prometheus...