The phrase "a pilot flame" is correct and usable in written English.
It can be used in contexts related to heating, cooking, or industrial processes where a small flame is used to ignite a larger flame or maintain a flame.
Example: "Before starting the furnace, ensure that the pilot flame is lit to provide a steady ignition source."
Alternatives: "ignition flame" or "starter flame".
BP operators were unaware of the leak because a pilot flame was not lit and security cameras were not pointed in the right direction, the committee said.
Starting a steam car requires a propane torch to heat and vaporize the fuel (typically gasoline) and to light a pilot flame.
The spray burner has been designed to generate a stable flame without the use of a bluff body or a pilot flame facilitating numerical simulations.
With the bed initially fluidized at room temperature, combustion (after ignition by a pilot flame) occurs in a premixed flame sitting on top of the bed.
The effect of a pilot flame is well predicted by the conditional scalar dissipation rate derived from a trimodal PDF for fuel, air, and pilot streams.
The flame exhibits significant stratification where the central jet has an equivalence ratio of 0.4, which is surrounded by a pilot flame with an equivalence ratio of 0.9.
She shows how sexual ardor can turn into a "tidy pilot flame" and how an impulsive tryst can become a treasured memory, hoarded as a bulwark against the banalities of middle age.
From the outer tube a rich methane/air mixture was supplied at a relatively low flow velocity, while a jet of pure air was introduced from the inner one, resulting in a turbulent jet flame on top of a laminar pilot flame.
She describes how a woman's mad passion for a man she has known her entire life can mutate into a "tidy pilot flame, attentive, wifely".
We confirmed experimentally that this system can ignite and preserve a stable pilot flame with quite high probability.
The targeted turbulent flames were generated on a specially designed coaxial jet burner, in which low speed stoichiometric gas mixture was fed through the outer large tube to provide a laminar pilot flame for stabilization of the high speed jet flame issued through the small inner tube.
