AMT_April-May2021 - 31

of fuel is spent on takeoff and climb, along with the
majority of emissions.
" So, if you think of a two hour flight, where your
takeoff and climb is fairly short out of the two hours,
that's less of a critical aspect. When your flight is
10, 15, 20 minutes long, and the majority of that is
your takeoff and climb, on a percentage basis, you're
spending a lot of fuel and emissions for a very short
flight. And yet with electric, the short flight is not
a limitation, because that's what it can do. And yet
you're saving all of the fuel and emissions from those
critical aspects of the fight, so it was a win-win for
everybody, " he continued.
The Alt Air fleet will be comprise of 15 seat Twin
Otters and 12 seat Cessna Caravans.
" As we add more fully electric planes to our fleet
once regulatory approvals are complete, passengers
will also enjoy an incomparably green and quiet commercial aviation experience, " Shaw said. " After more
than a decade of flying thousands of passengers over
stunning views around the Sydney Harbour, we're
delighted to take our next step into the future of
flight. "

Getting Airborne
Ganzarski said that equipping the planes with magniX's electric propulsion systems comes in two parts,
the physical and regulatory work.
" The Cessna Caravan today, the seaplanes that
Sydney Seaplanes have, have an internal combustion engine upfront, very large, heavy, clunky, " said
Ganzarski. " It has a gearbox, because the internal
combustion engines, to produce power, have to turn
at very high speeds, so it has what's called a reduction gearbox, that takes the high speed of the engine
down to the lower required speeds of the propeller.
" We take that off, we take out the entire oil system,
lubrication system, etc., that goes with that internal
combustion engine off. We take out the fuel tanks
and all of the fuel lines and fuel systems out of that
aircraft as well. So you take those out, and what you
do is instead you put in, instead of the fuel system,
you put in batteries, instead of the fuel lines you put
in electric cable or wiring, and then upfront, instead
of the internal combustion engine, you put in the
electric motor and the power electronics, or together,
what's known as the electric propulsion system. "

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AMT_April-May2021

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