Title:
ヘリコプタの反トルク尾部回転翼羽根
Document Type and Number:
Japanese Patent JP5524511
Kind Code:
B2
Abstract:
A blade (6) for an antitorque tail rotor (3) of a helicopter (1), having a leading edge (8) and a trailing edge (9) opposite each other and elongated along a longitudinal axis (B) of the blade (6); the trailing edge (9), in use, interacts with the air current after the leading edge (8); the blade (6) also has an end portion (14c) extending between a reference section (51) and a radially outer end (11) of the blade (6) with respect to a rotation axis (A) of the blade (6); the rotation axis (A) is outside the blade (6) and crosswise with respect to the longitudinal axis (B); the length (d) of the chord (P) at the end portion (14c) decreases from the reference section (51) to the radially outer end (11); and the leading and trailing edges (8, 9) are joined at the radially outer end (11). ( Figure 3 )
Inventors:
Alan Brocklehurst
Alessandro scandrollio
Alessandro scandrollio
Application Number:
JP2009124467A
Publication Date:
June 18, 2014
Filing Date:
May 22, 2009
Export Citation:
Assignee:
Agusta Westland Sochieta Per Azioni
International Classes:
B64C27/467; B64C27/82
Domestic Patent References:
| JP4293695A | ||||
| JP1269699A |
Foreign References:
| US20060257261 | ||||
| US4349316 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami
Tanimitsu Masaharu
Yasushi Ohashi
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami
Tanimitsu Masaharu
Yasushi Ohashi
Previous Patent: JPS5524510
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