Title:
【発明の名称】可変ピッチプロペラ装置のプロペラブレードのピッチ角を制御する装置
Document Type and Number:
Japanese Patent JPH0753520
Kind Code:
B2
Abstract:
Apparatus for controlling the pitch of the blades of a variable pitch, governor controlled, aerial propeller of which the pitch of the blades is variable between a coarse pitch limit and a fine pitch limit to match the torque of its prime mover has holding means (A) to maintain a forward thrust-generating blade pitch angle greater than the fine pitch limit with the prime mover idling as when an aircraft propelled by the propeller is taxi-ing whereby the propeller rotates more slowly, and hence more quietly, than it would otherwise.Preferably the holding means is effective by actuating a lock pitch solenoid valve (21) and an autofeather valve (18).
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Inventors:
Henry-Wilfred Finnigan
Application Number:
JP11684A
Publication Date:
June 07, 1995
Filing Date:
January 05, 1984
Export Citation:
Assignee:
Short Brothers PLC
International Classes:
B64C11/38; B64C11/40; B64C11/42; F02D29/00; B63H3/10; F02D29/02; (IPC1-7): B64C11/42; B63H3/10; F02D29/00
Domestic Patent References:
| JP474669B1 |
Attorney, Agent or Firm:
Shigeru Yagita (2 outside)