F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 25/08 (2006.01) C23C 14/04 (2006.01) C23C 14/54 (2006.01) F01D 5/18 (2006.01) F01D 5/28 (2006.01)
Patent
CA 2352698
A method of adjusting airflow through a plurality of cooling holes (32) by depositing a thermal barrier coating (36) on an exterior surface (34) and/or an interior surface of the component (16) by a physical vapor deposition process. The cooling holes (32) are not masked. Thus, a portion (38) of the thermal barrier coating (36) partially obstructs airflow through the cooling holes (32) and reduces airflow through the cooling holes (32). A predetermined pressure drop is developed across the cooling holes (32) and airflow through the cooling holes (32) is measured. The measured airflow is compared to a preselected range of desired cooling hole airflows and the steps of depositing the thermal barrier coating (36), developing the predetermined pressure drop, calculating airflow and comparing the measured airflow to the preselected range are repeated until the measured airflow is within the preselected range of desired cooling hole airflows.
Caldwell James M.
Farmer Gilbert
Fessenden Karl S.
Kauffman Jerald M.
Wang Xuenan
Company General Electric
Craig Wilson And Company
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