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US 5,293,775 AGranted
Gas turbine engine test cell
AssigneeUnited Technologies Corporation
InventorsTerry A. Clark, Mark W. Peszko, John H. Roberts, George L. Muller, John P. Nikkanen
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Abstract
Inlet vortex ingestion is deterred when testing an engine (12) in a test cell (10). Ramp structures (26) are installed on the walls blocking 30% to 50% of the flow area. The apex (42) of these ramps is located adjacent the engine inlet (24) with the upstream faces (46) at about a 45.degree. angle.
Claims11
A test cell for testing a gas turbine engine comprising:
- a plurality of planar walls defining an air flow duct, having an axis, a flow area and an upstream end;
- a support for supporting a gas turbine engine having an inlet, within said duct;
- an exhaust collector passage for removing air from said duct;
- a plurality of ramp structures installed on at least two opposing walls of said air flow duct;
- said ramp structures blocking between 30% and 50% of said flow area at a location at or adjacent the inlet of said gas turbine engine, when the gas turbine engine is supported in said duct;
- and
- each ramp structure having an upstream facing surface at an angle between 40.degree. and 50.degree. from said axis.
4 more elements
Dependencies are inferred from the claim text.