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.

Patent No.:

US 9586691 B1

Date of Patent:

Mar. 07, 2017

Filed:

Jul. 17, 2014

Regulated three-engined power plant for a rotary wing aircraft

Applicant:

Airbus Helicopters, Marignane, FR;

Inventors:

Regis Rossotto, Marseilles, FR;

Hanno Boie, Marseilles, FR;

Assignee:

Airbus Helicopters, Marignane, FR;

Attorney:

Brooks Kushman P.C.

Primary Examiner:

Tuan C To

Int. Cl.

CPC ...

B64D 31/06 (2006.01); B64C 27/00 (2006.01); B64C 27/12 (2006.01); B64D 35/08 (2006.01); F02C 9/42 (2006.01);

U.S. Cl.

CPC ...

B64D 31/06 (2013.01); B64C 27/00 (2013.01); B64C 27/12 (2013.01); B64D 35/08 (2013.01); F02C 9/42 (2013.01); F05D 2220/329 (2013.01); F05D 2270/05 (2013.01); F05D 2270/053 (2013.01); Y02T 50/671 (2013.01);

Abstract

A power plant () having two engine groups () and a main gearbox (MGB) (), and a rotary wing aircraft () having such a power plant (). Each engine group () drives said MGB () mechanically to rotate a main outlet shaft () and, consequently, a main rotor () of said aircraft () at a frequency of rotation NR. A first engine group () has two main engines () and is by a first setpoint NR* for said frequency of rotation NR, while a second engine group () has one secondary engine () and is regulated by a second setpoint W* for power from said second engine group (). The first engine group () is also regulated by a third setpoint Wf* for anticipating power such that said first engine group () and said second engine group () deliver the power needed at said main rotor ().

Find Patent Forward Citations

Rossotto, Regis. (2017). Regulated three-engined power plant for a rotary wing aircraft (U.S. Patent No. 9586691). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9586691

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