US 12,234,024 B2
Ram filter purge system
John Robert Wittmaak, Jr., Newark, TX (US); Brennan Stults, Keller, TX (US); Keith David Weaver, North Richland Hills, TX (US); and Richard Lee Thackway, Trophy Club, TX (US)
Assigned to Textron Innovations Inc., Providence, RI (US)
Filed by Textron Innovations Inc., Providence, RI (US)
Filed on Jul. 26, 2023, as Appl. No. 18/226,526.
Prior Publication US 2025/0033786 A1, Jan. 30, 2025
Int. Cl. B64D 33/02 (2006.01); B64D 29/00 (2006.01)
CPC B64D 33/02 (2013.01) [B64D 29/00 (2013.01); B64D 2033/0246 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An aircraft nacelle comprising:
a forward cruise inlet;
a forward-cruise-inlet conduit coupled to the forward cruise inlet and operable to supply air from the forward cruise inlet to an engine housed by the aircraft nacelle;
an inlet barrier filter;
an inlet-barrier-filter compartment coupled to the inlet barrier filter;
a plurality of gills coupled between the inlet-barrier-filter compartment and the engine and operable to be in an open state and a closed state;
a filter-purge door coupled to the inlet-barrier-filter compartment and operable to be in a closed state and an open state; and
wherein, when the plurality of gills are in the closed state and the filter-purge door is in the open state, air from the filter-purge door flows from the inlet-barrier-filter compartment through the inlet barrier filter.