SE468059B - Anordning foer spelrumsstyrning vid en gasturbinmotor - Google Patents
Anordning foer spelrumsstyrning vid en gasturbinmotorInfo
- Publication number
- SE468059B SE468059B SE8901130A SE8901130A SE468059B SE 468059 B SE468059 B SE 468059B SE 8901130 A SE8901130 A SE 8901130A SE 8901130 A SE8901130 A SE 8901130A SE 468059 B SE468059 B SE 468059B
- Authority
- SE
- Sweden
- Prior art keywords
- temperature
- displacement
- rotor
- casing
- signal
- Prior art date
Links
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 title 1
- 230000001133 acceleration Effects 0.000 claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims description 146
- 238000004364 calculation method Methods 0.000 claims description 78
- 238000001816 cooling Methods 0.000 claims description 27
- 238000012546 transfer Methods 0.000 claims description 15
- 230000001052 transient effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000010363 phase shift Effects 0.000 claims 1
- 239000003570 air Substances 0.000 description 57
- 239000011799 hole material Substances 0.000 description 32
- 230000008859 change Effects 0.000 description 15
- 239000007789 gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 239000003607 modifier Substances 0.000 description 3
- 238000005201 scrubbing Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006903 response to temperature Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
- F01D11/20—Actively adjusting tip-clearance
- F01D11/24—Actively adjusting tip-clearance by selectively cooling-heating stator or rotor components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/12—Measuring arrangements characterised by the use of fluids for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/42—Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Control Of Turbines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/175,894 US5012420A (en) | 1988-03-31 | 1988-03-31 | Active clearance control for gas turbine engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8901130D0 SE8901130D0 (sv) | 1989-03-31 |
| SE8901130L SE8901130L (sv) | 1989-10-01 |
| SE468059B true SE468059B (sv) | 1992-10-26 |
Family
ID=22642105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8901130A SE468059B (sv) | 1988-03-31 | 1989-03-31 | Anordning foer spelrumsstyrning vid en gasturbinmotor |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5012420A (it) |
| JP (1) | JP2777184B2 (it) |
| DE (1) | DE3910319C2 (it) |
| FR (1) | FR2630500B1 (it) |
| GB (1) | GB2218224B (it) |
| IT (1) | IT1228781B (it) |
| SE (1) | SE468059B (it) |
Families Citing this family (71)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4999991A (en) * | 1989-10-12 | 1991-03-19 | United Technologies Corporation | Synthesized feedback for gas turbine clearance control |
| US5267435A (en) * | 1992-08-18 | 1993-12-07 | General Electric Company | Thrust droop compensation method and system |
| US5545007A (en) * | 1994-11-25 | 1996-08-13 | United Technologies Corp. | Engine blade clearance control system with piezoelectric actuator |
| US5685693A (en) * | 1995-03-31 | 1997-11-11 | General Electric Co. | Removable inner turbine shell with bucket tip clearance control |
| US5790972A (en) * | 1995-08-24 | 1998-08-04 | Kohlenberger; Charles R. | Method and apparatus for cooling the inlet air of gas turbine and internal combustion engine prime movers |
| US6626635B1 (en) * | 1998-09-30 | 2003-09-30 | General Electric Company | System for controlling clearance between blade tips and a surrounding casing in rotating machinery |
| US6142477A (en) * | 1998-11-16 | 2000-11-07 | United Technologies Corporation | Active seal |
| US6272422B2 (en) * | 1998-12-23 | 2001-08-07 | United Technologies Corporation | Method and apparatus for use in control of clearances in a gas turbine engine |
| US6155038A (en) * | 1998-12-23 | 2000-12-05 | United Technologies Corporation | Method and apparatus for use in control and compensation of clearances in a gas turbine |
| US6401460B1 (en) * | 2000-08-18 | 2002-06-11 | Siemens Westinghouse Power Corporation | Active control system for gas turbine blade tip clearance |
| US6487491B1 (en) | 2001-11-21 | 2002-11-26 | United Technologies Corporation | System and method of controlling clearance between turbine engine blades and case based on engine components thermal growth model |
| GB2396438B (en) * | 2002-12-20 | 2006-03-22 | Rolls Royce Plc | Rotor system |
| EP1524411B1 (de) | 2003-10-13 | 2011-07-20 | Siemens Aktiengesellschaft | Turbine und Verfahren zur Minimierung des Spaltes zwischen einer Laufschaufel und einem Gehäuse einer Turbine |
| DE10352790B4 (de) * | 2003-11-12 | 2006-12-28 | Mtu Aero Engines Gmbh | Verfahren zur Ermittlung und/oder Analyse und/oder Auslegung von Spalten insbesondere einer Turbomaschine |
| FR2871513B1 (fr) * | 2004-06-15 | 2006-09-22 | Snecma Moteurs Sa | Systeme et procede de controle d'un flux d'air dans une turbine a gaz |
| GB2417762B (en) * | 2004-09-04 | 2006-10-04 | Rolls Royce Plc | Turbine case cooling |
| US7465145B2 (en) * | 2005-03-17 | 2008-12-16 | United Technologies Corporation | Tip clearance control system |
| US7455495B2 (en) * | 2005-08-16 | 2008-11-25 | United Technologies Corporation | Systems and methods for monitoring thermal growth and controlling clearances, and maintaining health of turbo machinery applications |
| US7491029B2 (en) | 2005-10-14 | 2009-02-17 | United Technologies Corporation | Active clearance control system for gas turbine engines |
| GB0609312D0 (en) * | 2006-05-11 | 2006-06-21 | Rolls Royce Plc | Clearance Control Apparatus |
| US7431557B2 (en) * | 2006-05-25 | 2008-10-07 | General Electric Company | Compensating for blade tip clearance deterioration in active clearance control |
| US7368827B2 (en) * | 2006-09-06 | 2008-05-06 | Siemens Power Generation, Inc. | Electrical assembly for monitoring conditions in a combustion turbine operating environment |
| US7717667B2 (en) * | 2006-09-29 | 2010-05-18 | General Electric Company | Method and apparatus for operating gas turbine engines |
| US7837429B2 (en) * | 2006-10-12 | 2010-11-23 | General Electric Company | Predictive model based control system for heavy duty gas turbines |
| US8801370B2 (en) * | 2006-10-12 | 2014-08-12 | General Electric Company | Turbine case impingement cooling for heavy duty gas turbines |
| JP2008180220A (ja) * | 2007-01-24 | 2008-08-07 | General Electric Co <Ge> | 高馬力ガスタービン用の予測モデル式制御システム |
| US8126628B2 (en) * | 2007-08-03 | 2012-02-28 | General Electric Company | Aircraft gas turbine engine blade tip clearance control |
| JP5220509B2 (ja) * | 2008-08-01 | 2013-06-26 | ゼネラル・エレクトリック・カンパニイ | 航空機用ガスタービンエンジンのブレード先端間隙制御 |
| FI123228B (fi) * | 2010-04-20 | 2012-12-31 | Waertsilae Finland Oy | Järjestely akselin aksiaalisen liikkeen havaitsemiseksi |
| US20130283762A1 (en) * | 2012-04-27 | 2013-10-31 | General Electric Company | Rotary vane actuator operated air valves |
| US8961115B2 (en) | 2012-07-19 | 2015-02-24 | United Technologies Corporation | Clearance control for gas turbine engine seal |
| DE102012213016A1 (de) | 2012-07-25 | 2014-01-30 | Siemens Aktiengesellschaft | Verfahren zur Minimierung des Spalts zwischen einem Läufer und einem Gehäuse |
| US9341074B2 (en) | 2012-07-25 | 2016-05-17 | General Electric Company | Active clearance control manifold system |
| US9758252B2 (en) * | 2012-08-23 | 2017-09-12 | General Electric Company | Method, system, and apparatus for reducing a turbine clearance |
| EP2954173A1 (en) | 2013-02-08 | 2015-12-16 | General Electric Company | Suction-based active clearance control system |
| JP5460902B2 (ja) * | 2013-03-07 | 2014-04-02 | ゼネラル・エレクトリック・カンパニイ | 航空機用ガスタービンエンジンのブレード先端間隙制御 |
| US9453429B2 (en) | 2013-03-11 | 2016-09-27 | General Electric Company | Flow sleeve for thermal control of a double-wall turbine shell and related method |
| GB2516048A (en) * | 2013-07-09 | 2015-01-14 | Rolls Royce Plc | Tip clearance control method |
| DE102014203318A1 (de) * | 2014-02-25 | 2015-08-27 | Siemens Aktiengesellschaft | Verfahren zum Betrieb einer Gasturbine bei aktiver hydraulischer Spalteinstellung |
| EP2927433B1 (en) | 2014-04-04 | 2018-09-26 | United Technologies Corporation | Active clearance control for gas turbine engine |
| GB201507881D0 (en) | 2015-05-08 | 2015-06-24 | Rolls Royce Plc | Turbine tip clearance |
| US10578028B2 (en) | 2015-08-18 | 2020-03-03 | General Electric Company | Compressor bleed auxiliary turbine |
| US10711702B2 (en) | 2015-08-18 | 2020-07-14 | General Electric Company | Mixed flow turbocore |
| US9909441B2 (en) | 2015-11-11 | 2018-03-06 | General Electric Company | Method of operating a clearance control system |
| GB201601427D0 (en) * | 2016-01-26 | 2016-03-09 | Rolls Royce Plc | Setting control for gas turbine engine component(s) |
| US10247029B2 (en) * | 2016-02-04 | 2019-04-02 | United Technologies Corporation | Method for clearance control in a gas turbine engine |
| US10344614B2 (en) * | 2016-04-12 | 2019-07-09 | United Technologies Corporation | Active clearance control for a turbine and case |
| US9889915B2 (en) * | 2016-06-30 | 2018-02-13 | Caterpillar Inc. | Systems, apparatuses, and methods to control output power of groups of engines |
| US10822991B2 (en) * | 2016-08-01 | 2020-11-03 | General Electric Company | Method and apparatus for active clearance control on gas turbine engines |
| CN106855386B (zh) * | 2016-11-07 | 2019-03-01 | 成都发动机(集团)有限公司 | 高压压气机转子叶片外径和叶尖角测量装置 |
| FR3059042B1 (fr) | 2016-11-22 | 2020-07-17 | Safran Aircraft Engines | Procede de commande d'une vanne de turbomachine |
| US10914185B2 (en) | 2016-12-02 | 2021-02-09 | General Electric Company | Additive manufactured case with internal passages for active clearance control |
| US10414507B2 (en) | 2017-03-09 | 2019-09-17 | General Electric Company | Adaptive active clearance control logic |
| US10428676B2 (en) * | 2017-06-13 | 2019-10-01 | Rolls-Royce Corporation | Tip clearance control with variable speed blower |
| US20190078459A1 (en) * | 2017-09-11 | 2019-03-14 | United Technologies Corporation | Active clearance control system for gas turbine engine with power turbine |
| US10941706B2 (en) | 2018-02-13 | 2021-03-09 | General Electric Company | Closed cycle heat engine for a gas turbine engine |
| US11143104B2 (en) | 2018-02-20 | 2021-10-12 | General Electric Company | Thermal management system |
| GB201808352D0 (en) * | 2018-05-22 | 2018-07-11 | Rolls Royce Plc | Air intake system |
| US10822993B2 (en) | 2018-06-06 | 2020-11-03 | General Electric Company | Method for operating a turbo machine |
| US11015534B2 (en) | 2018-11-28 | 2021-05-25 | General Electric Company | Thermal management system |
| JP7067505B2 (ja) * | 2019-02-15 | 2022-05-16 | トヨタ自動車株式会社 | 燃料ポンプの診断装置 |
| US11970279B2 (en) | 2020-02-21 | 2024-04-30 | General Electric Company | Control system and methods of controlling an engine-mounting link system |
| US11939070B2 (en) | 2020-02-21 | 2024-03-26 | General Electric Company | Engine-mounting links that have an adjustable inclination angle |
| US11512594B2 (en) | 2020-06-05 | 2022-11-29 | General Electric Company | System and method for modulating airflow into a bore of a rotor to control blade tip clearance |
| CN114087029B (zh) * | 2020-08-25 | 2024-05-17 | 中国航发商用航空发动机有限责任公司 | 涡轮叶尖间隙主动控制方法、系统和航空发动机 |
| US11454131B2 (en) | 2021-01-05 | 2022-09-27 | General Electric Company | Methods and apparatus for real-time clearance assessment using a pressure measurement |
| US11982189B2 (en) * | 2021-06-04 | 2024-05-14 | Rtx Corporation | Warm start control of an active clearance control for a gas turbine engine |
| US12091027B2 (en) * | 2021-07-15 | 2024-09-17 | Fca Us Llc | Vehicle electric motor temperature estimation using neural network model |
| US12385430B2 (en) | 2023-11-30 | 2025-08-12 | General Electric Company | Gas turbine engine with forward swept outlet guide vanes |
| US12209557B1 (en) | 2023-11-30 | 2025-01-28 | General Electric Company | Gas turbine engine with forward swept outlet guide vanes |
| US20250334055A1 (en) * | 2024-04-24 | 2025-10-30 | General Electric Company | Gas turbine engine having cooling systems |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023919A (en) * | 1974-12-19 | 1977-05-17 | General Electric Company | Thermal actuated valve for clearance control |
| GB1605255A (en) * | 1975-12-02 | 1986-08-13 | Rolls Royce | Clearance control apparatus for bladed fluid flow machine |
| US4230436A (en) * | 1978-07-17 | 1980-10-28 | General Electric Company | Rotor/shroud clearance control system |
| US4332133A (en) * | 1979-11-14 | 1982-06-01 | United Technologies Corporation | Compressor bleed system for cooling and clearance control |
| US4338061A (en) * | 1980-06-26 | 1982-07-06 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Control means for a gas turbine engine |
| US4487016A (en) * | 1980-10-01 | 1984-12-11 | United Technologies Corporation | Modulated clearance control for an axial flow rotary machine |
| GB2104966B (en) * | 1981-06-26 | 1984-08-01 | United Technologies Corp | Closed loop control for tip clearance of a gas turbine engine |
| US4621335A (en) * | 1983-05-31 | 1986-11-04 | Allied Corporation | Real time recall feature for an engine data processor system |
| DE3514354A1 (de) * | 1985-04-20 | 1986-10-23 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Gekuehlte gasturbine mit lastabhaengig regelbarer kuehlluftmenge |
| US4815928A (en) * | 1985-05-06 | 1989-03-28 | General Electric Company | Blade cooling |
| FR2604750B1 (fr) * | 1986-10-01 | 1988-12-02 | Snecma | Turbomachine munie d'un dispositif de commande automatique des debits de ventilation de turbine |
| FR2614073B1 (fr) * | 1987-04-15 | 1992-02-14 | Snecma | Dispositif d'ajustement en temps reel du jeu radial entre un rotor et un stator de turbomachine |
| US4893983A (en) * | 1988-04-07 | 1990-01-16 | General Electric Company | Clearance control system |
-
1988
- 1988-03-31 US US07/175,894 patent/US5012420A/en not_active Expired - Lifetime
-
1989
- 1989-03-28 JP JP1074146A patent/JP2777184B2/ja not_active Expired - Fee Related
- 1989-03-30 FR FR8904134A patent/FR2630500B1/fr not_active Expired - Fee Related
- 1989-03-30 DE DE3910319A patent/DE3910319C2/de not_active Expired - Lifetime
- 1989-03-31 IT IT8919962A patent/IT1228781B/it active
- 1989-03-31 GB GB8907282A patent/GB2218224B/en not_active Expired
- 1989-03-31 SE SE8901130A patent/SE468059B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2630500B1 (fr) | 1994-05-06 |
| SE8901130D0 (sv) | 1989-03-31 |
| US5012420A (en) | 1991-04-30 |
| GB2218224B (en) | 1992-08-19 |
| FR2630500A1 (fr) | 1989-10-27 |
| GB2218224A (en) | 1989-11-08 |
| JP2777184B2 (ja) | 1998-07-16 |
| DE3910319C2 (de) | 2000-02-17 |
| GB8907282D0 (en) | 1989-05-17 |
| IT1228781B (it) | 1991-07-03 |
| SE8901130L (sv) | 1989-10-01 |
| IT8919962A0 (it) | 1989-03-31 |
| JPH01315624A (ja) | 1989-12-20 |
| DE3910319A1 (de) | 1989-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE468059B (sv) | Anordning foer spelrumsstyrning vid en gasturbinmotor | |
| US6272422B2 (en) | Method and apparatus for use in control of clearances in a gas turbine engine | |
| KR100650095B1 (ko) | 가스터빈엔진과 사용하기 위한 장치 및 방법 | |
| JP3720804B2 (ja) | クリアランス制御方法および装置 | |
| US7584618B2 (en) | Controlling air flow to a turbine shroud for thermal control | |
| EP0330492B1 (en) | Active clearance control | |
| US9878692B2 (en) | Model-based optimal control for stall margin limit protection in an aircraft engine | |
| JP5552002B2 (ja) | サージマージン制御 | |
| EP2843198B1 (en) | Method and control system for active rotor tip control clearance | |
| JP5193197B2 (ja) | ガスタービン作動方法ならびに当該方法を実施するためのガスタービン | |
| Peng et al. | Active generalized predictive control of turbine tip clearance for aero-engines | |
| JPH02522B2 (it) | ||
| US9546564B2 (en) | Rotor tip clearance | |
| JPH0476021B2 (it) | ||
| CN114945734B (zh) | 用于控制高压涡轮的间隙以降低egt超调影响的控制方法和单元 | |
| KR20000047986A (ko) | 가스 터빈 엔진 제어 시스템 | |
| CN120509231A (zh) | 一种跨尺度多物理场耦合的航空发动机暖机过程分析方法 | |
| CN116300457A (zh) | 一种基于多参考模型的航空发动机全包线模型参考自适应控制方法 | |
| JPS5820904A (ja) | ガスタ−ビン動翼先端シ−ル構造 | |
| JPH01267301A (ja) | ターボ機械の翼先端ギャップコントロール | |
| JPS63162907A (ja) | コンバインド発電プラントの制御方法 | |
| Viborg | Feldiagnos för RM12 baserad på identifierade modeller | |
| Lewis et al. | Annulus wall temperatures and heat transfer coefficients in aeroengine compressors deduced from engine measurements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
Ref document number: 8901130-8 Format of ref document f/p: F |
|
| NUG | Patent has lapsed |