Last Updated：2022/12/24
The high-pressure spool rotates faster than the intermediate- and low-pressure spools, as the high-pressure turbine is driven by superheated combustion gases straight out of the burners, while the high-pressure compressor has to spin very fast to compress air that has already been compressed and heated by the low- and intermediate-pressure compressors.
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The
high-pressure
spool
rotates
faster
than
the
intermediate-
and
low-pressure
spools,
as
the
high-pressure
turbine
is
driven
by
superheated
combustion
gases
straight
out
of
the
burners,
while
the
high-pressure
compressor
has
to
spin
very
fast
to
compress
air
that
has
already
been
compressed
and
heated
by
the
low-
and
intermediate-pressure
compressors.
