The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 24, 2024

Filed:

Mar. 06, 2024
Applicant:

Israel Aerospace Industries Ltd., Lod, IL;

Inventors:

Danny Abramov, Lod, IL;

Shai Alexandroni, Lod, IL;

Ben Keshales, Lod, IL;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 11/28 (2006.01); B64C 7/02 (2006.01); F01D 7/00 (2006.01);
U.S. Cl.
CPC ...
B64C 11/28 (2013.01); B64C 7/02 (2013.01); F01D 7/00 (2013.01);
Abstract

A propulsion system, including a rotor arrangement rotatably mounted with respect to a nacelle about a rotor axis. The rotor arrangement includes rotor blades, each being pivotably mounted to a hub element about a respective blade pivot axis, the rotor blades being deployable between an undeployed configuration and a deployed configuration. The nacelle includes a nacelle body having a nacelle outer surface including facet elements and transition elements, each facet element extending aft from the hub element, each adjacent pair of facet elements being circumferentially spaced from one another by a corresponding transition element, each facet element having a first curvature with respect to the rotor axis, each transition element having a second curvature with respect to the rotor axis. The first curvature is different from the second curvature. In the undeployed configuration, each rotor blade is in overlying and fully external relationship with respect to a corresponding facet element.


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