Aviation researcher Dr. Jayant Mukhopadhyay discusses the realistic range limits of battery-electric aircraft like Eviation's Alice when accounting for required reserve margins.
Insight
Mukhopadhyay: Electric Aircraft Need 500 Wh/kg Batteries Near Theoretical Limit
“Whether you're talking about nine, 19, or a hundred seat aircraft, you require at least a doubling of current battery technology, and that's really a significant increase, especially when you're thinking about just lithium ion batteries. That is close to sort …”
Assertion Supported
Mukhopadhyay: Electric aircraft can only address 0.1% of global passenger kilometers
“These electric aircraft in the end don't actually end up playing a significant role in terms of the global aviation market. We're talking about close to like .1% of the global aviation traffic can be serviced by these aircraft. Now that's in terms of sort of p…”
Prediction Open · timeframe Dec 2050
Mukhopadhyay: Fleet turnover caps 2050 hydrogen aircraft penetration at 6% to 12%
“And so our projections suggest that even though hydrogen aircraft could service a third of passenger aviation, the actual market penetration is probably going to be more like six to 12% by 20 50. Because of that slow fleet turnover rate.”
Assertion Supported
Mukhopadhyay: Non-CO2 aircraft impacts like contrails cause twice the warming of CO2
“They say that current research suggests that the impact, the non CO two impacts, which includes these contrail formation can be twice as much as the impact from CO two alone.”
Assertion Supported
Mukhopadhyay: Airport hydrogen production infrastructure costs as much as a new terminal
“And the estimates for about, for what kind of Investment that would require is on the order of sort of build all of that onsite production and storage, it would cost as much for the airport to build a whole new terminal.”
Prediction Not checkable as stated
Mukhopadhyay: Net-zero aviation by 2050 requires electric, hydrogen, and SAF
“And then on the lower end, electrify everything. As much can be electrified, should be electrified. Wherever hydrogen can be used, should be used, and everything else will require SAF to decarbonize, and that's really the only way we get to net zero emissions …”