CA1209670A - Torsional mode suppressor - Google Patents
Torsional mode suppressorInfo
- Publication number
- CA1209670A CA1209670A CA000426108A CA426108A CA1209670A CA 1209670 A CA1209670 A CA 1209670A CA 000426108 A CA000426108 A CA 000426108A CA 426108 A CA426108 A CA 426108A CA 1209670 A CA1209670 A CA 1209670A
- Authority
- CA
- Canada
- Prior art keywords
- speed
- signal
- fuel
- gas generator
- variations
- 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
- 239000000446 fuel Substances 0.000 claims abstract description 66
- 238000013016 damping Methods 0.000 claims abstract description 32
- 230000010355 oscillation Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000002674 ointment Substances 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000013017 mechanical damping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/001—Vibration damping devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/08—Control of attitude, i.e. control of roll, pitch, or yaw
- G05D1/0808—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft
- G05D1/0858—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft specially adapted for vertical take-off of aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Turbines (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/369,494 US4453378A (en) | 1982-04-19 | 1982-04-19 | Torsional mode suppressor |
| US06/369,494 | 1982-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1209670A true CA1209670A (en) | 1986-08-12 |
Family
ID=23455722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000426108A Expired CA1209670A (en) | 1982-04-19 | 1983-04-18 | Torsional mode suppressor |
Country Status (6)
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2160840B (en) * | 1984-06-29 | 1987-12-02 | Westland Plc | Method and apparatus for reducing vibration of a helicopter fuselage |
| GB8610297D0 (en) * | 1986-04-28 | 1986-10-01 | Rolls Royce | Turbomachinery |
| US4967550A (en) * | 1987-04-28 | 1990-11-06 | Rolls-Royce Plc | Active control of unsteady motion phenomena in turbomachinery |
| DE3736110A1 (de) * | 1987-10-26 | 1989-05-11 | Porsche Ag | Startanordnung fuer einen hubschrauber |
| US5046923A (en) * | 1989-10-02 | 1991-09-10 | United Technologies Corporation | Helicopter autorotation detection and recovery |
| US5189620A (en) * | 1989-10-06 | 1993-02-23 | United Technologies Corporation | Control system for gas turbine helicopter engines and the like |
| US5259186A (en) * | 1991-03-08 | 1993-11-09 | General Electric Company | Gas turbine fuel control |
| US5447023A (en) * | 1992-06-30 | 1995-09-05 | United Technologies Corporation | Synthesized fuel flow rate and metering valve position |
| DE4441364C1 (de) * | 1994-11-21 | 1995-12-07 | Daimler Benz Ag | Verfahren zur Beaufschlagung einer Vorrichtung bzw. Anlage mit alternierendem, pulsierendem bzw. getaktetem Kraft- oder Energiestrom |
| US5775090A (en) * | 1996-12-23 | 1998-07-07 | Allison Engine Company | Torque signal synthesis method and system for a gas turbine engine |
| US5775089A (en) * | 1996-12-23 | 1998-07-07 | Allison Engine Company | Pressure signal synthesis method and system for a gas turbine engine |
| US5996343A (en) * | 1998-11-12 | 1999-12-07 | Caterpillar Inc. | Overspeed control system for a hydro-mechanical drive system |
| US6729139B2 (en) | 2001-09-26 | 2004-05-04 | Goodrich Pump & Engine Control Systems, Inc. | Engine control system |
| FR2843812B1 (fr) * | 2002-08-26 | 2004-10-08 | Eurocopter France | Systeme pour controler la stabilite en torsion de la chaine cinematique d'un appareil, en particulier d'un helicoptere |
| EP2224129B1 (en) | 2009-02-27 | 2016-09-21 | Acciona Windpower S.a. | Wind turbine control method to dampen vibrations |
| FR2977638B1 (fr) | 2011-07-04 | 2017-10-06 | Snecma | Procede de commande pour transitoires de regime d'une turbomachine |
| GB2511668A (en) * | 2012-04-12 | 2014-09-10 | Supercell Oy | System and method for controlling technical processes |
| US9625886B1 (en) * | 2012-06-22 | 2017-04-18 | The United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration | Conditionally active min-max limit regulators |
| US8829701B2 (en) | 2012-10-11 | 2014-09-09 | Pratt & Whitney Canada Corp. | Resonant mode damping system and method |
| FR3067325B1 (fr) * | 2017-06-13 | 2022-02-18 | Airbus Helicopters | Systeme de regulation pour controler le comportement vibratoire et/ou la stabilite en torsion d'une chaine cinematique, giravion equipe d'un tel systeme de regulation et procede de regulation asocie |
| FR3070057B1 (fr) * | 2017-08-11 | 2019-09-06 | Safran Aircraft Engines | Unite de commande d'une vanne commandee de prelevement d'un flux d'air dans un flux d'air sous pression d'un aeronef |
| CN108443022B (zh) * | 2018-03-01 | 2019-08-09 | 南京航空航天大学 | 变旋翼转速飞行器发动机扭振抑制方法及装置 |
| EP4568895A1 (en) * | 2022-08-09 | 2025-06-18 | Pete Bitar | Compact and lightweight drone delivery device called an arcspear electric jet drone system having an electric ducted air propulsion system and being relatively difficult to track in flight |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3006144A (en) * | 1961-10-31 | arnett etal | ||
| FR1360347A (fr) * | 1963-03-28 | 1964-05-08 | Snecma | Perfectionnements à l'allumage des réacteurs |
| US3520133A (en) * | 1968-03-14 | 1970-07-14 | Gen Electric | Gas turbine control system |
| US3606233A (en) * | 1968-04-22 | 1971-09-20 | Bolt Beranek & Newman | Vibration isolation system |
| US3688495A (en) * | 1970-04-17 | 1972-09-05 | Adolf Fehler | Control system for metering the fuel flow in gas turbine engines |
| US3756543A (en) * | 1971-08-05 | 1973-09-04 | United Aircraft Corp | Load stability system |
| US4015426A (en) * | 1972-11-20 | 1977-04-05 | Nippondenso Co., Ltd. | Fuel control system |
| US4276744A (en) * | 1979-09-19 | 1981-07-07 | General Electric Company | Control system for gas turbine engine |
-
1982
- 1982-04-19 US US06/369,494 patent/US4453378A/en not_active Expired - Lifetime
-
1983
- 1983-03-24 IL IL68227A patent/IL68227A/xx not_active IP Right Cessation
- 1983-04-18 CA CA000426108A patent/CA1209670A/en not_active Expired
- 1983-04-18 JP JP58068242A patent/JPS58191698A/ja active Granted
- 1983-04-19 DE DE8383302207T patent/DE3379242D1/de not_active Expired
- 1983-04-19 EP EP83302207A patent/EP0092424B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58191698A (ja) | 1983-11-08 |
| US4453378A (en) | 1984-06-12 |
| DE3379242D1 (en) | 1989-03-30 |
| EP0092424A3 (en) | 1985-02-06 |
| IL68227A (en) | 1988-03-31 |
| EP0092424A2 (en) | 1983-10-26 |
| EP0092424B1 (en) | 1989-02-22 |
| JPH0421055B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |