Especially in the wake of Covid’s body blow to the air transport industry, it’s an unforgiving world out there among airlines. The prospect of electric aircraft existed before the pandemic, but will commercial operators now see this as a viable part of their medium-term recovery and long-term future?
A new joint study by transportation consultants Roland Berger and the Royal Netherlands Aerospace Centre (NLR) addresses this point head-on by questioning whether electric aircraft can ever compete on cost with existing airliners. Yes and no is their answer.
NLR evaluated a hypothetical 19-seat sub-regional all-electric aircraft that had been produced by modifying a 1980s-vintage BAE Jetstream 32 twin turboprop. They gave it the snappy name NLR-RB-19E and determined that it would be able to operate on routes of up to around 700 km (438 miles). This was based on what the authors, Nikhil Sachdeva, senior project manager with Roland Berger, and Wim Lammen, a research engineer with NLR, admit is the optimistic assumption that batteries with an energy density of 1,000 Wh/kg would be available. Even then, it is acknowledged that a turbine engine would be needed as a backup.
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