VARIABLE GEOMETRY COMBUSTORS

摘要

The combustion chamber for a gas turbine engine is constructed of a plurality of spaced telescoping sections, the gap between the sections providing an inlet for the introduction of cooling air. A flexible joint is provided between the overlapping portions of the telescoped sections permitting each section to expand and contract with low constraint. This results in a change in the size of the air inlet gap, and thus controls the amount of air introduced to the combustor under varying operating conditions. In one embodiment the joint comprises a plurality of circumferentially disposed flexible wiggle strips welded at one end to one section and at the other end to the other section. In another embodiment the joint takes the form of a plurality of circumferentially disposed flexible Z-section spacers.