US 11,965,461 B2
Inlet air management system
Daniel John Simpson, Arlington, TX (US); Tim Nobel, Fort Worth, TX (US); Mitchell Jay Griffith, Hurst, TX (US); Henry Rodger Bredenkamp, Jr., Granbury, TX (US); Dave H. Loe, Hurst, TX (US); and Paul Park, Fort Worth, TX (US)
Assigned to Textron Innovations Inc., Providence, RI (US)
Filed by Bell Textron Inc., Fort Worth, TX (US)
Filed on Apr. 12, 2020, as Appl. No. 16/846,377.
Prior Publication US 2021/0317783 A1, Oct. 14, 2021
Int. Cl. F02C 7/057 (2006.01); B64D 29/00 (2006.01); B64D 33/02 (2006.01); F02C 7/05 (2006.01)
CPC F02C 7/057 (2013.01) [B64D 29/00 (2013.01); B64D 33/02 (2013.01); F02C 7/05 (2013.01); B64D 2033/0246 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rotatable nacelle, comprising:
an engine inlet configured to receive air; and
an inlet air management system (IAMS), comprising:
a primary inlet for providing a portion of a primary flowpath, the primary inlet having inlet bottom ledge surface, the primary inlet configured to selectively allow air to flow into a duct associated with the engine air inlet via the primary inlet, wherein the duct is truncated and not connected to the engine inlet;
a secondary inlet configured to selectively allow air to flow into the duct associated with the engine air inlet via the secondary inlet, the secondary inlet being configured to receive an air filter;
an inlet door configured to selectively control airflow through the primary inlet.