Aviation Glossary
10A comprehensive glossary of aviation terms, acronyms, and technical jargon explained in plain language.
Afterburner
ABA supplementary combustion system downstream of the turbine that injects extra fuel for massive short-term thrust increase, primarily used in military aircraft.
Engine TechnologyCeramic Matrix Composite
CMCAdvanced heat-resistant material used in turbine engine hot sections, enabling higher operating temperatures and reduced weight.
Engine TechnologyCombustion Chamber
NoneThe section of a jet engine where compressed air mixes with fuel and ignites, producing high-energy gases that drive the turbine.
Engine TechnologyCompressor Stage
NoneA set of rotating and stationary airfoils inside a jet engine that progressively compress intake air before combustion.
Engine TechnologyGeared Turbofan
GTFA turbofan design using a reduction gearbox between the fan and low-pressure turbine, allowing each to spin at optimal speed.
Engine TechnologyHigh-Bypass Turbofan
HBTA turbofan engine with a bypass ratio above 5:1, routing most intake air around the engine core for maximum fuel efficiency and minimum noise.
Engine TechnologyOpen Rotor Engine
NoneNext-generation propulsion concept using unducted, counter-rotating fan blades for turboprop-like efficiency at jet speeds.
Engine TechnologyPropfan
NoneA hybrid propulsion design combining turboprop efficiency with turbofan-like speed using swept, highly-loaded propeller blades.
Engine TechnologySingle-Crystal Turbine Blade
NoneA turbine blade cast from a single metal crystal, eliminating grain boundaries to withstand extreme temperatures above 1,500°C.
Engine TechnologySustainable Aviation Fuel
SAFDrop-in replacement jet fuel produced from renewable feedstocks that can reduce lifecycle CO2 emissions by up to 80%.
Engine Technology