GB820106A - Constant speed and feathering propeller - Google Patents
Constant speed and feathering propellerInfo
- Publication number
- GB820106A GB820106A GB36184/57A GB3618457A GB820106A GB 820106 A GB820106 A GB 820106A GB 36184/57 A GB36184/57 A GB 36184/57A GB 3618457 A GB3618457 A GB 3618457A GB 820106 A GB820106 A GB 820106A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pitch
- propeller
- blade
- blades
- collar
- 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
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
- B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic
- B64C11/385—Blade pitch-changing mechanisms fluid, e.g. hydraulic comprising feathering, braking or stopping systems
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
820,106. Variable pitch propellers. HARTZELL PROPELLER Inc. Nov. 20, 1957 [Feb. 18, 1957, March 18, 1957], No. 36184/57. Class 114. An adjustable pitch propeller comprises a hub 14 with blade sockets formed with an inwardly facing abutment 30 about the mouth thereof, a blade 10 extending radially into each socket and having an outwardly extending flange provided (by an annular recess 24) about the inner end thereof, a split blade collar 26 mounted about the inner end of the blade so as to engage the flange, there being a plate 34 engaging the butt end of the blade and secured to the collar (by screws 27) to hold the collar in place, an anti-friction bearing 28 having its outer race fitted into the socket and engaging the abutment 30 and its inner race closely surrounding the split collar 26, and piston and cylinder means 68, 58 carried by the hub 14 and connected therein (via a tube 46, a shift yoke, and pin 38) with plates 34 for varying the pitch of the propeller from full feathered pitch to lower pitch position. A nut 48 on the plate 34 bears against a friction reducing element 50 resting on a shoulder 52 formed on the hub and provides means for preloading the bearing 28. Resilient means act on the piston 68 to increase the pitch of the blades, whilst off-centre weights 114 mounted on the blades are responsive to propeller speed for reducing pitch. Said resilient means may comprise a gas entrapped in the cylinder 58, or as in Fig. 2, may comprise springs 80, 82, 84. Hydraulic fluid in the tube 46 flows through a port 78 to act on piston 68 to reduce the pitch of the blades. Should the supply of hydraulic fluid fail, said resilient means will thrust the blades to a feathered position. The tube 46 carries a latch rod 86 having a shoulder 88 adapted to cooperate with a latch pin 90 which moves out at the speed of 500 r.p.m. of the propeller and under normal circumstances moves inwardly to engage shoulder 88 whenever the propeller is brought to a halt in a normal manner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US820106XA | 1957-02-18 | 1957-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB820106A true GB820106A (en) | 1959-09-16 |
Family
ID=22168127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36184/57A Expired GB820106A (en) | 1957-02-18 | 1957-11-20 | Constant speed and feathering propeller |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB820106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3046433A1 (en) * | 2016-01-05 | 2017-07-07 | Snecma | AUBES BLOW MODULE WITH VARIABLE SHIFT FOR A TURBOMACHINE |
-
1957
- 1957-11-20 GB GB36184/57A patent/GB820106A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3046433A1 (en) * | 2016-01-05 | 2017-07-07 | Snecma | AUBES BLOW MODULE WITH VARIABLE SHIFT FOR A TURBOMACHINE |
| WO2017118792A1 (en) * | 2016-01-05 | 2017-07-13 | Safran Aircraft Engines | Fan module having variable-pitch blades for a turbine engine |
| GB2562648A (en) * | 2016-01-05 | 2018-11-21 | Safran Aircraft Engines | Fan module having variable-pitch blades for a turbine engine |
| GB2562648B (en) * | 2016-01-05 | 2021-05-19 | Safran Aircraft Engines | Fan module having variable-pitch blades for a turbine engine |
| US11162506B2 (en) | 2016-01-05 | 2021-11-02 | Safran Aircraft Engines | Fan module having variable-pitch blades for a turbine engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1427984A (en) | Articulated helicopter rotor | |
| US3792937A (en) | Bladed rotors | |
| GB568530A (en) | Improved operating gear for adjustable propeller type blades in hydraulic turbines and pumps | |
| GB820106A (en) | Constant speed and feathering propeller | |
| GB1011419A (en) | Axial flow fans | |
| GB637238A (en) | Improvements in or relating to variable-pitch propellers | |
| GB978916A (en) | Improvements in or relating to control devices for varying the pitch of fan while running | |
| GB1074873A (en) | An adjustable pitch propeller | |
| GB876954A (en) | Constant speed and feathering propeller | |
| GB901505A (en) | Helicopter torque control device | |
| GB798142A (en) | Improvements in and relating to means for attachment of wheels, discs or the like to shafts | |
| GB965465A (en) | Improvements relating to compressor thrust bearings | |
| GB1020123A (en) | Improvements in or relating to hydraulic turbine runners of the kaplan type | |
| GB718127A (en) | Improvements in or relating to variable pitch propellers | |
| GB721558A (en) | Improvements relating to jet nozzles for jet propulsion units | |
| GB806614A (en) | Improvements in or relating to aircraft provided with lifting rotors | |
| GB519261A (en) | Improvements relating to variable pitch propellers for aircraft | |
| US2370657A (en) | Hub construction for propellers | |
| GB773065A (en) | Improvements in or relating to propellers for aircraft | |
| GB606524A (en) | Improvements in or relating to propeller assemblies | |
| GB499932A (en) | Improvements in or relating to screw propellers, particularly for aircraft | |
| GB785959A (en) | Improvements in and relating to turbines having adjustable guide vanes | |
| GB854144A (en) | Improvements in or relating to nuclear reactors | |
| US2774433A (en) | Two-position constant speed semi-automatic propeller pitch control | |
| GB476972A (en) | Improvements in or relating to variable pitch airscrews |