Continuous ignition

An ignition system, comprising:

• a housing defining an interior and an exhaust outlet, wherein the housing is configured and adapted to be mounted to a combustor to issue flame from the exhaust outlet into the combustor for ignition and flame stabilization within the combustor;
• a fuel injector mounted to the housing with an outlet of the fuel injector directed to issue a spray of fuel into the interior of the housing;
• an igniter mounted to the housing with an ignition point of the igniter proximate the outlet of the fuel injector for ignition within the interior of the housing;
• an inner wall mounted in the interior of the housing and defining a combustion chamber within the inner wall and further defining an upstream end and a downstream end relative to a flow of combustion products through the combustion chamber, wherein the inner wall is spaced apart inward from the housing to define an air plenum between the inner wall and the housing;
• upstream end and downstream end air swirlers, the upstream end air swirler being proximate the upstream end of the inner wall, the downstream end air swirler being proximate the downstream end of the inner wall, wherein both the upstream end and downstream end air swirlers are configured to impart swirl onto a flow of air entering the combustion chamber;
• and
• an exhaust tube coupled to the downstream end air swirler such that the downstream end air swirler is disposed upstream of the exhaust tube and downstream of the upstream end air swirler and such that the exhaust tube conveys combustion products to the exhaust outlet.