| US 7,611,093 B2 | ||
| Dual flow APU inlet and associated systems and methods | ||
| Thomas A. Campbell, Seattle, Wash. (US); David S. Chambers, Bellevue, Wash. (US); Robert H. Willie, Bothell, Wash. (US); and Charles W. Rust, Seattle, Wash. (US) | ||
| Assigned to The Boeing Company, Chicago, Ill. (US) | ||
| Filed on Jul. 27, 2007, as Appl. No. 11/829,497. | ||
| Application 11/829497 is a division of application No. 10/974167, filed on Oct. 26, 2004, granted, now 7,344,107. | ||
| Prior Publication US 2008/0179466 A1, Jul. 31, 2008 | ||
| Int. Cl. B64D 41/00 (2006.01) | ||
| U.S. Cl. 244—58 [244/53 B] | 36 Claims |
| 1. An inlet system for an aircraft auxiliary power unit, comprising:
an inlet having an entrance aperture; and
a divider positioned in the inlet, the divider being located to separate a first portion of the inlet from a second portion
of the inlet, the first portion being configured to couple to an engine air intake of an aircraft auxiliary power unit, the
second portion being configured to direct air away from the air intake, the divider being positioned to direct air having
a first total pressure level and a first distortion level to the first portion of the inlet, and direct air having a second
total pressure level and a second distortion level to the second portion of the inlet, with
(a) the first total pressure level higher than the second total pressure level, and
(b) the second distortion level higher than the first distortion level.
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