IT960929B - Perfezionamento nelle valvole per servomeccanismi - Google Patents
Perfezionamento nelle valvole per servomeccanismiInfo
- Publication number
- IT960929B IT960929B IT51308/72A IT5130872A IT960929B IT 960929 B IT960929 B IT 960929B IT 51308/72 A IT51308/72 A IT 51308/72A IT 5130872 A IT5130872 A IT 5130872A IT 960929 B IT960929 B IT 960929B
- Authority
- IT
- Italy
- Prior art keywords
- servomechanisms
- valves
- improvement
- Prior art date
Links
Classifications
-
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
-
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Motors (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3151871A GB1364293A (en) | 1971-07-06 | 1971-07-06 | Valve for follow-up servo mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
IT960929B true IT960929B (it) | 1973-11-30 |
Family
ID=10324289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT51308/72A IT960929B (it) | 1971-07-06 | 1972-07-03 | Perfezionamento nelle valvole per servomeccanismi |
Country Status (5)
Country | Link |
---|---|
US (1) | US3802799A (it) |
DE (1) | DE2232168A1 (it) |
FR (1) | FR2144831A1 (it) |
GB (1) | GB1364293A (it) |
IT (1) | IT960929B (it) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3964839A (en) * | 1974-10-21 | 1976-06-22 | United Technologies Corporation | Pitch change mechanism |
US3994128A (en) * | 1975-05-21 | 1976-11-30 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Dual output variable pitch turbofan actuation system |
US4533295A (en) * | 1982-12-20 | 1985-08-06 | United Technologies Corporation | Pitch control system for variable pitch propeller |
US4588354A (en) * | 1983-08-05 | 1986-05-13 | United Technologies Corporation | Engine speed control in propeller pitch control systems |
US4753572A (en) * | 1986-10-02 | 1988-06-28 | United Technologies Corporation | Propeller pitch change actuation system |
US5391055A (en) * | 1993-11-24 | 1995-02-21 | United Technologies Corporation | Propeller pitch change mechanism with impulse turbines |
US6062408A (en) * | 1997-04-09 | 2000-05-16 | Dtl Technology Limited Partnership | Wide mouth hot fill container |
FR2911644B1 (fr) | 2007-01-23 | 2012-06-01 | Snecma | Turbopropulseur comportant une helice formee de pales a orientation reglable. |
CN107989832B (zh) * | 2017-11-23 | 2020-02-07 | 中国航发沈阳黎明航空发动机有限责任公司 | 一种采用滚动接触保证压气机控制机构同心度的结构 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB753237A (en) * | 1953-11-13 | 1956-07-18 | English Electric Co Ltd | Improvements in and relating to the control of feathering runner vanes of hydraulic turbines and pumps |
US3367424A (en) * | 1967-04-07 | 1968-02-06 | Hitachi Ltd | Hydraulic machine having adjustable blade runner |
GB1296062A (it) * | 1969-05-03 | 1972-11-15 | ||
US3690788A (en) * | 1970-02-16 | 1972-09-12 | James M Pedersen | Controllable pitch propeller |
-
1971
- 1971-07-06 GB GB3151871A patent/GB1364293A/en not_active Expired
-
1972
- 1972-06-27 US US00266682A patent/US3802799A/en not_active Expired - Lifetime
- 1972-06-30 DE DE2232168A patent/DE2232168A1/de active Pending
- 1972-07-03 IT IT51308/72A patent/IT960929B/it active
- 1972-07-06 FR FR7224443A patent/FR2144831A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB1364293A (en) | 1974-08-21 |
DE2232168A1 (de) | 1973-01-18 |
FR2144831A1 (it) | 1973-02-16 |
US3802799A (en) | 1974-04-09 |
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