COMBUSTOR WITH HELIX AIR AND FUEL MIXING PASSAGE

A combustor (98) includes a combustor liner (102) defining a combustion chamber (105) and a fuel and air mixing body (104) connected to the combustor liner (102) to deliver mixed fuel and air into the combustion chamber (105). The mixing body (104) includes an inner housing member (103) centered on a center axis (X) and an intermediate housing member (131). A mixing passage (112) is defined between the inner and intermediate housing members (103, 131). The mixing passage (112) extends along a direction from an upstream end (119, 114) to a downstream end (120, 116) with a circumferential component, a component in an axially downstream direction, and a radially inward component with at least one air inlet (118) into the mixing passage (112). A fuel supply (99) extends into the mixing passage (112) at a location downstream of the air inlet (118). The mixing passage (112) extends downstream to supply fuel and air into the combustion chamber (105). A gas turbine engine (20) is also disclosed.