Accession Number : ADD014117

Title :   Borescope Plug.

Descriptive Note : Patent, Filed 10 Sep 87, patented 28 Mar 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Hansel, Harold R ; Drerup, Vincent M

Report Date : 28 Mar 1989

Pagination or Media Count : 7

Abstract : The invention comprises a borescope plug for sealing a borescope inspection port on a turbine engine having a fluid flowpath and multiple casings. The borescope plug comprises a plug body having an interlocking drive interface, a plunger portion positioned for sliding coaxial movement relative to the plug body and spring means engaging both the plug body and the plunger. The spring means presses the plunger towards a fully extended position relative to the plug body. The plunger comprises a fixedly attached tip portion shaped to conform with the fluid flowpath. Key means is provided for aligning the tip to conform with the fluid flowpath and the tip is cooled with a cooling airflow. (jes)

Descriptors :   *PLUGS, *TURBINES, AIR FLOW, BORESCOPES, COAXIAL CONFIGURATIONS, COOLING, INSPECTION, SLIDING

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE