GB1296063A - - Google Patents
Info
- Publication number
- GB1296063A GB1296063A GB1296063DA GB1296063A GB 1296063 A GB1296063 A GB 1296063A GB 1296063D A GB1296063D A GB 1296063DA GB 1296063 A GB1296063 A GB 1296063A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- platform
- rows
- centrifugal force
- ring
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/322—Blade mountings
- F04D29/323—Blade mountings adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1296063 Axial-flow fans; jet propulsion plant DOWTY ROTOL Ltd 6 April 1970 [3 May 1969] 22684/69 Headings F1C F1J and F1T A bladed rotor includes a row of blades and a ring-like member encircling the blades, the member being so mounted upon some at least of the blades as to be rotatable with the blades and to have freedom for limited movement with respect to the blades to accommodate any distortion of the ring-like member. An intermediate platform 32 separating fan blades 39, 40 of a bypass gas turbine engine from fan blades 21 is supported by the blades 21. For this purpose, each blade 21 has a spigot 30 carrying a partspherical member 31 which engages a correspondingly shaped depression 37 formed in the inner surface 38 of the platform 32. During operation, centrifugal force increases the diameter of the platform 32 by about one eighth of an inch, but the members 31 slide radially outwards on their spigots 30 under the influence of centrifugal force to maintain contact with the depressions 37. There may be more than the two rows of blades shown, and all, or some, of the rows may be of fixed pitch or of variable pitch, twist or camber. In the embodiment shown, the blades 21 are of fixed pitch while the blades 39, 40 are of variable pitch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2268469 | 1969-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1296063A true GB1296063A (en) | 1972-11-15 |
Family
ID=10183439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1296063D Expired GB1296063A (en) | 1969-05-03 | 1969-05-03 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2046297A5 (en) |
| GB (1) | GB1296063A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2403062A1 (en) * | 1973-02-21 | 1974-09-05 | United Aircraft Corp | ACTUATION DEVICE FOR CHANGING THE LEAF PITCH IN A DRIVE BLOWER |
| US5152668A (en) * | 1990-07-23 | 1992-10-06 | General Electric Company | Pitch change mechanism for prop fans |
| US5154372A (en) * | 1990-07-23 | 1992-10-13 | General Electric Company | Torque multiplier for aircraft propeller |
| US5154580A (en) * | 1990-07-23 | 1992-10-13 | General Electric Company | Propeller pitch change mechanism |
| US5156648A (en) * | 1990-07-09 | 1992-10-20 | General Electric Company | Prop-fan pitch-change mechanism |
| US5174716A (en) * | 1990-07-23 | 1992-12-29 | General Electric Company | Pitch change mechanism |
| US5242265A (en) * | 1990-07-23 | 1993-09-07 | General Electric Company | Aircraft pitch change mechanism |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2218874C3 (en) * | 1972-04-19 | 1979-05-17 | Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen | Device for adjusting the fan blades of a turbine jet engine |
| FR2911644B1 (en) | 2007-01-23 | 2012-06-01 | Snecma | TURBOPROPULSEUR COMPRISING A PROPELLED PROPELLER OF BLADES WITH ADJUSTABLE ORIENTATION. |
| CN106014491B (en) * | 2016-08-05 | 2017-12-12 | 泉州泉港璟冠信息科技有限公司 | A kind of angle of attack type variable fanjet blade turning mechanism |
-
1969
- 1969-05-03 GB GB1296063D patent/GB1296063A/en not_active Expired
-
1970
- 1970-04-21 FR FR7014489A patent/FR2046297A5/fr not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2403062A1 (en) * | 1973-02-21 | 1974-09-05 | United Aircraft Corp | ACTUATION DEVICE FOR CHANGING THE LEAF PITCH IN A DRIVE BLOWER |
| US5156648A (en) * | 1990-07-09 | 1992-10-20 | General Electric Company | Prop-fan pitch-change mechanism |
| US5152668A (en) * | 1990-07-23 | 1992-10-06 | General Electric Company | Pitch change mechanism for prop fans |
| US5154372A (en) * | 1990-07-23 | 1992-10-13 | General Electric Company | Torque multiplier for aircraft propeller |
| US5154580A (en) * | 1990-07-23 | 1992-10-13 | General Electric Company | Propeller pitch change mechanism |
| US5174716A (en) * | 1990-07-23 | 1992-12-29 | General Electric Company | Pitch change mechanism |
| US5242265A (en) * | 1990-07-23 | 1993-09-07 | General Electric Company | Aircraft pitch change mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2046297A5 (en) | 1971-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |