Patent · US Active

Rotary wing aircraft with a shrouded tail propeller

US11697493B2 · kind B2 · utility

1Cited by

9References

20Claims

0Family size

Assignee

AIRBUS HELICOPTERS DEUTSCHLAND GMBH · DE

Inventors

Rupert Pfaller · Riemerling, DE
Tobias RIES · Blankenburg, DE

Key dates

Filing date	Jan 13, 2022
Grant date	Jul 11, 2023
Priority date	—
Expiry date	Jan 13, 2042

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C2027/8272
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A rotary wing aircraft that extends along an associated roll axis between a nose region and an aft region. The rotary wing aircraft comprises a main rotor; a propeller that is at least configured to propel the rotary wing aircraft in forward flight condition, wherein the propeller forms a circular propeller disc in rotation around an associated rotation axis; and a shrouded duct that is arranged in the aft region and that forms an inner air duct which accommodates at least partly the propeller, wherein the shrouded duct comprises a yaw and pitch stability enhancement unit for improving yaw and pitch stability of the rotary wing aircraft in the forward flight condition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.