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Title: Ceramic combustor mounting

A combustor for a gas turbine engine includes a metal engine block including a wall portion defining a housing for a combustor having ceramic liner components. A ceramic outlet duct is supported by a compliant seal on the metal block and a reaction chamber liner is stacked thereon and partly closed at one end by a ceramic bypass swirl plate which is spring loaded by a plurality of circumferentially spaced, spring loaded guide rods and wherein each of the guide rods has one end thereof directed exteriorly of a metal cover plate on the engine block to react against externally located biasing springs cooled by ambient air and wherein the rod spring support arrangement maintains the stacked ceramic components together so that a normal force is maintained on the seal between the outlet duct and the engine block under all operating conditions. The support arrangement also is operative to accommodate a substantial difference in thermal expansion between the ceramic liner components of the combustor and the metal material of the engine block.
 [1];  [2]
  1. (Speedway, IN)
  2. (Danville, IN)
Issue Date:
OSTI Identifier:
General Motors Corporation (Detroit, MI) OSTI
Patent Number(s):
US 4363208
Country of Publication:
United States
ceramic; combustor; mounting; gas; turbine; engine; metal; block; including; wall; portion; defining; housing; liner; components; outlet; duct; supported; compliant; seal; reaction; chamber; stacked; thereon; partly; closed; bypass; swirl; plate; spring; loaded; plurality; circumferentially; spaced; guide; rods; directed; exteriorly; cover; react; externally; located; biasing; springs; cooled; ambient; air; rod; support; arrangement; maintains; normal; force; maintained; operating; conditions; operative; accommodate; substantial; difference; thermal; expansion; material; portion defining; metal material; wall portion; engine block; circumferentially spaced; ceramic components; ceramic component; operating conditions; ambient air; turbine engine; reaction chamber; thermal expansion; gas turbine; cover plate; support arrangement; operating condition; spring loaded; ceramic combustor; compliant seal; metal block; metal engine; guide rods; ceramic liner; normal force; /60/431/