IT1115931B - Helicopter rotor with axially rotatable blades - has single piece titanium hub casting enclosing blade mountings - Google Patents

Helicopter rotor with axially rotatable blades - has single piece titanium hub casting enclosing blade mountings

Info

Publication number
IT1115931B
IT1115931B IT4832477A IT4832477A IT1115931B IT 1115931 B IT1115931 B IT 1115931B IT 4832477 A IT4832477 A IT 4832477A IT 4832477 A IT4832477 A IT 4832477A IT 1115931 B IT1115931 B IT 1115931B
Authority
IT
Italy
Prior art keywords
hub
blades
stubs
axially rotatable
single piece
Prior art date
Application number
IT4832477A
Other languages
Italian (it)
Original Assignee
Westland Aircraft Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB903076A external-priority patent/GB1514347A/en
Application filed by Westland Aircraft Ltd filed Critical Westland Aircraft Ltd
Application granted granted Critical
Publication of IT1115931B publication Critical patent/IT1115931B/en

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  • Fluid-Damping Devices (AREA)

Abstract

The hub is for helicopter rotors, esp. with axially rotatable blades. A one-piece hollow Titanium casting comprises an inner portion (14) in the form of a rectangular section ring, with cylindrical section radial stubs for the blades. There are radial stiffening webs between the stubs and the inner portion is splined onto the rotor shaft (49). The whole assembly, including the top part of the rotor shaft, is made gastight and can be pressurised via a charging valve in the hub. The blades (12) are carried in an elastomeric mounting (20) conventionally arranged to permit all the movements necessary in flight, fixed to the hub stubs by circular flanges (25). A coupling sleeve (33) at the inner end of the blade spindle is connected to a damper unit running peripherally to a mounting point on the hub outer wall.
IT4832477A 1976-03-05 1977-03-04 Helicopter rotor with axially rotatable blades - has single piece titanium hub casting enclosing blade mountings IT1115931B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB903076A GB1514347A (en) 1976-03-05 1976-03-05 Helicopter rotors
GB903077 1977-02-28

Publications (1)

Publication Number Publication Date
IT1115931B true IT1115931B (en) 1986-02-10

Family

ID=26242595

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4832477A IT1115931B (en) 1976-03-05 1977-03-04 Helicopter rotor with axially rotatable blades - has single piece titanium hub casting enclosing blade mountings

Country Status (1)

Country Link
IT (1) IT1115931B (en)

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