A method of generating lift for a vehicle including a gas turbine engine
having a combustor, a core flow heated by the combustor, and a bypass
flow which bypasses the combustor. The method includes segregating at
least a portion of the core flow from the bypass flow, directing the
segregated portion of the core flow in a first direction to generate lift
for the vehicle, segregating at least a portion of the bypass flow from
the core flow, and directing the segregated a portion of the bypass flow
in a second direction to generate lift for the vehicle.