Contents
What is flame holding?
A flame holder is a component of a jet engine designed to help maintain continual combustion. A flame holder creates a low-speed eddy in the engine to prevent the flame from being blown out. The design of the flame holder is an issue of balance between a stable eddy and drag.
What are combustors made of?
The liner is made from NeoNickel alloy X and its design is perforated to allow for inflow of air to cool the gases at the liner outlet. Combustor liners operate in high temperature, high stress, and high pressure conditions which must withstand high rates of burning with little or no pressure drop.
What does a flame stabilizer do?
Flame stabilization techniques vary by engine type but typically have a bluff body to impart a recirculation zone of hot combustion gases around the fuel injectors and compressed air inlet to prevent flameout.
What is the essential condition for flame stability?
5.04. Good flame stability depends of fuel particles being rapidly heated by hot gases recirculated from the flame to release volatile species, which combust readily in the near-burner region. This feedback system is the key to good combustion.
What is the purpose of a flame holder?
A flame holder creates a low-speed eddy in the engine to prevent the flame from being blown out. The design of the flame holder is an issue of balance between a stable eddy and drag. The simplest design, often used in amateur projects, is the can-type flame holder, which consists of a can covered in small holes.
Why do you need a flame holder in a jet engine?
A flame holder is a component of a jet engine designed to help maintain continual combustion.All continuous-combustion jet engines require a flame holder. A flame holder creates a low-speed eddy in the engine to prevent the flame from being blown out.
What happens when all the gas is washed out of the combustion chamber?
If all of the burning gas is washed out from the combustion chamber without igniting the following gas, the ignition process will stop. This is called a flame-out.