Assertion: jet | /r/CapableOf | burn fuel
Facets:
value: to heat the air
type: PURPOSE
Source sentences:
text: The compressed air in cold tip jets generally exited at quite high temperatures due to compression-heating effects, but they are referred to as "cold" jets[citation needed] to differentiate them from jets that burn fuel to heat the air for greater thrust; similar to the difference between the "cold" and "hot" exhausts on the Harrier "Jump Jet", which uses "cold" air heated to several hundred degrees by compression inside the low-pressure compressor of the Pegasus engine.)