Definition
Slang term used by pilots and mechanics to refer to a turbojet engine, particularly the early generations of jet engines whose exhaust resembled the flame of a blowtorch.
Plain English
An informal nickname for a jet engine. It comes from the way the engine's exhaust looks and sounds — a hot, focused stream of flame and gas, much like a handheld torch.
Context Anchor
Seen in aircraft maintenance, shop safety, and discussions of heating parts or working near flammable materials.
Derivation
A blowtorch is a handheld tool that produces an intense, narrow flame by forcing fuel and air through a nozzle. Early turbojets produced a similarly hot, concentrated jet of exhaust, so mechanics began calling them blowtorches. The nickname stuck.
Why Pilots Care
A pilot normally does not use a blowtorch during flight operations, but should recognize it as a serious heat and fire source around aircraft, fuel, fabric, paint, wiring, and other heat-sensitive parts.
Intuition Check
Do not think of a blowtorch as just a small flame. In aviation maintenance, it means a concentrated heat source that can quickly create damage or a fire hazard if used carelessly.
Example Sentence 1
The old-timers still call the J57 a blowtorch.
Example Sentence 2
Mechanics joked that the blowtorch on the ramp was so loud you could feel the heat from fifty feet away.