GB397158A - Improvements in or relating to propellers - Google Patents
Improvements in or relating to propellersInfo
- Publication number
- GB397158A GB397158A GB31573/31A GB3157331A GB397158A GB 397158 A GB397158 A GB 397158A GB 31573/31 A GB31573/31 A GB 31573/31A GB 3157331 A GB3157331 A GB 3157331A GB 397158 A GB397158 A GB 397158A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- rods
- propeller
- nov
- pivoted
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000007935 neutral effect Effects 0.000 abstract 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
- B64C11/32—Blade pitch-changing mechanisms mechanical
- B64C11/34—Blade pitch-changing mechanisms mechanical automatic
- B64C11/343—Blade pitch-changing mechanisms mechanical automatic actuated by the centrifugal force or the aerodynamic drag acting on the blades
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
397,158. Propellers. LAVAUD, D. S. DE, 179, Rue de la Pompe, Paris. Nov. 14, 1931, No. 31573. Convention date, Nov. 14, 1930. [Class 114.] In an automatically variable-pitch propeller in which the blades 1a, 1b are pivoted on axes 5 inclined to the propeller shaft 22, the neutral fibres of the blades being inclined to said axes, and resilient means tend to return the blades to initial pitch position, counterweights 16 pivoted on the hub are connected by links 18 to the blades and tend by their centrifugal action to rotate the blades in opposition to the resilient means. The latter comprises torsion rods 5 secured at their opposite ends 6, 7 to the blades and hub respectively. Tubes 11 rigid with the blade sockets and mounted in bearings 12, 13 are provided with abutments 14 to prevent lengthening of the rods 5. The initial pitch position may be adjusted by removing nuts 25 and rotating the rods 5. The neutral fibres of the blades when extended do not pass through the axis of rotation of the propeller.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR397158X | 1930-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB397158A true GB397158A (en) | 1933-08-14 |
Family
ID=8896512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31573/31A Expired GB397158A (en) | 1930-11-14 | 1931-11-14 | Improvements in or relating to propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB397158A (en) |
-
1931
- 1931-11-14 GB GB31573/31A patent/GB397158A/en not_active Expired
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