WO2014096619A1 - Optimisation de la disponibilite d'un inverseur de poussee - Google Patents
Optimisation de la disponibilite d'un inverseur de poussee Download PDFInfo
- Publication number
- WO2014096619A1 WO2014096619A1 PCT/FR2013/052987 FR2013052987W WO2014096619A1 WO 2014096619 A1 WO2014096619 A1 WO 2014096619A1 FR 2013052987 W FR2013052987 W FR 2013052987W WO 2014096619 A1 WO2014096619 A1 WO 2014096619A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thrust reverser
- equipment
- error message
- malfunction
- valve
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/54—Nozzles having means for reversing jet thrust
- F02K1/76—Control or regulation of thrust reversers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/04—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of exhaust outlets or jet pipes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
-
- 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
- F05D2260/80—Diagnostics
Definitions
- the present invention relates to the general field of aeronautical turbomachines, in particular the thrust reversers of turbojet or turboprop aircraft engines. It relates more particularly to a method of controlling a thrust reverser.
- the object of the present invention is to overcome these drawbacks by proposing a new method of controlling the thrust reversers of a turbomachine allowing a deployment and use of a thrust reverser even after the appearance of a first error message. relating to a malfunction of this thrust reverser.
- a thrust reverser control method comprising a plurality of equipment in which when one detects that one of said devices is not activated after a predetermined activation delay, an error message relating to the malfunction of said thrust reverser is generated, characterized in that, despite the generation of said message d error, the activation of said equipment is continued and if said equipment is finally activated before a predetermined maximum deployment time of said thrust reverser, the deployment of said thrust reverser is continued and said error message relating to the malfunctioning of said inverter is withdrawn thrust.
- the thrust reverser can still be deployed completely and the counterpulse used, which was not the case in the prior art where the slowness of one of these equipment by triggering an irreversible error prohibited any use of the thrust reverser.
- said predetermined maximum deployment time of said thrust reverser when said predetermined maximum deployment time of said thrust reverser is exceeded, it generates again said error message relating to the malfunction of said thrust reverser and inhibits any counterpulsed.
- an elementary failure message relating to said equipment generating this generation is memorized.
- said predetermined activation time of an equipment is adapted to each equipment according to its own dynamics and said equipment is any of the following equipment of a thrust reverser: the primary lock, the tertiary lock, the door, the DSV valve, the TLSV valve, the ISV valve, the DCV unit or the ICU unit.
- FIG. 1 schematically illustrates the different equipment of a turbomachine thrust reverser enabling the implementation of the control method of the invention
- FIG. 2 is a sequence diagram illustrating the operation of the thrust reverser of FIG. 1,
- FIG. 3 illustrates the various steps of the method of controlling a thrust reverser according to the invention
- FIG. 4 is an exemplary chronogram of the successive operations initiated according to the method of the invention during an attempt to deploy a thrust reverser.
- FIG. 1 schematically illustrates the various equipment making it possible to provide the thrust reversal function of a turbomachine
- This function is organized around the cylinder 10 for actuating the door 12 of the inverter whose direction of movement is managed by a distribution unit 14.
- the door is held in place by means of primary and secondary locks 16 18 supplied with power. through respective hydraulic valves (DSV 20 and TLSV 22) via the distribution unit (DCV 14) or directly from an isolation control unit (ICU 24) connected to a hydraulic supply 26.
- a central control unit of the turbomachine for example the FADEC computer 30, provides control of the states of these equipment according to the actions taken by the pilot at the cockpit 32 on the control levers 34. At this cockpit, light or audible indicators 36 allow in particular the signaling of error messages from these equipment and to the pilot.
- FIG. 2 shows in the form of a sequential diagram or Grafcet the operation of the thrust reverser with the different states in which the equipment of FIG. 1 passes during a deployment and a closure of such a device. thrust reverser.
- the thrust reverser is controlled by an automaton present at the central control unit 30 and whose successive states are as follows:
- the initial state is the rest position in which the isolation valve (ISV) of the hydraulic pressure and the directional valve (DSV) are not controlled (do not control the DSV returns to direct the hydraulic power, if it is present in the circuit, in the closing direction of the DCV distribution unit).
- the tertiary lock valve (TLSV) is also not powered.
- the deployment of the inverter covers the two successive states closure (OVERSTOW 12) and deployment (DEPLOYING 14).
- the first step is to pressurize the circuit by opening the ISV isolation valve and the aircraft feeds the TLSV valve at the same time, which opens the tertiary locks and drives the door cylinder to its closed position. Then the DSV valve changes direction, which first opens the primary locks and then deploys the door with its cylinder.
- the state of closure of the inverter which covers the three successive states of waiting (WAIT 18), stowage (STOWING 20) and end stowage (END STOWED 22).
- the DSV valve is first put in the closing direction (WAIT) then the circuit is pressurized by opening the isolation valve, which opens the tertiary locks and actuates the door cylinder in the closing direction of the door. the door.
- the door slams on the primary locks and the tertiary locks close when the supply of the TLSV valve is cut by the aircraft (STOWING).
- the pressure is then also cut (END STOWED) by closing the isolation valve and the thrust reverser returns to its initial state ( ⁇ ).
- the thrust reverser can still be deployed completely and used, which was not done before this solution, the slowness in carrying out only one of these steps leading to the prohibition of use of the thrust reverser.
- the method according to the invention therefore consists in detecting that a piece of equipment is slow to reach its final position, and not blocked, and if so, then to continue the deployment of the thrust reverser. and finally to allow the counterpoise.
- Each step of opening / closing of equipment of the thrust reverser is followed, using a failure detection logic specific to each equipment and a maximum activation time adapted to each equipment according to its own dynamics.
- the method of the invention is illustrated in principle with any equipment, for example tertiary locks (TL), by the flowchart of FIG. 2.
- TL tertiary locks
- step 202 it is necessary to successively order different equipment, that is to say in the illustrated example to open the tertiary locks (step 202).
- the opening time of each of these locks that is to say the activation time of the equipment is thus monitored and once in the state in which one wishes to see the equipment positioned, it is that is to say, the lock opens, if the conditions for the equipment to be activated are met, that is to say it is detected a hydraulic pressure and an opening of a TLSV valve, then it can be started a counter that stops once the equipment in final activation position, that is to say once the lock is open.
- a basic failure message specific to the problem concerned (“Blocked TL closed” for the example considered) is triggered and stored in a step 206 so that the maintenance can intervene on this lock and in parallel (step 208) a "RevFault” error message is sent to the cockpit to indicate to the pilot that the thrust reverser has a problem due to the failure of the equipment in question and therefore risks not to deploy. Nevertheless, the system continues to attempt to activate the equipment, that is to say to attempt to open this lock.
- step 210 If the equipment eventually activates in a next step 210, that is to say that the tertiary lock eventually open, then the error message "RevFault" sent previously to the pilot (step 212), however, the basic failure message remains stored for later maintenance intervention to investigate the causes of this off-delay activation.
- the pilot will be aware that his inverter will eventually open and that it will have a counterpoise available. Since finally the lock has opened well, it is that the lock was slow and not locked in the closed position.
- step 214 It is therefore possible to continue the sequence in a nominal manner (step 214), which was not the case with the systems of the prior art since no distinction was made between a slow lock and locked in the closed position, that is, equipment activated on time or with delay, and that under these conditions, no back-up was available and that the thrust reverser could not be deployed.
- a maximum overall deployment time counter is started in a step 216 so as not to postpone the "backtrack" after the pilot's request, which could be inconvenient in some flight configurations.
- an appearance in the cockpit of the error message "RevFault" can inform the pilot of this impossibility in a final step 218.
- the operating principle of the invention illustrated previously in general for the tertiary locks can be applied in the same way (obviously with maximum activation times adapted) to any other equipment of the thrust reverser, such as the primary locks, the cylinder of the door (s), the DCV valve, the TLSV valve or the insulation control unit (ICU), whether for the opening or closing of these different equipment.
- any other equipment of the thrust reverser such as the primary locks, the cylinder of the door (s), the DCV valve, the TLSV valve or the insulation control unit (ICU), whether for the opening or closing of these different equipment.
- the sequence illustrated in the timing diagram of FIG. 4 shows, for example, the application of the method of the invention when elementary failures successively affect two equipment of the thrust reverser, namely the left tertiary lock (TLL) and then the high primary locks. (ENJOYED).
- TLL left tertiary lock
- ENJOYED high primary locks
- the right tertiary lock (TLR) opens normally (it goes to low level - reference 2) but the left (TLL) remains locked closed (it stay high).
- the elementary failure message "TLL locked locked” is triggered (high level change - reference 3) and the error message " Rev Fault "is sent to the pilot (upgrade to high level - reference 4).
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Safety Devices In Control Systems (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Elevator Control (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1510329.4A GB2523688B (en) | 2012-12-17 | 2013-12-06 | Optimising the availability of a thrust reverser |
| US14/651,746 US9464595B2 (en) | 2012-12-17 | 2013-12-06 | Optimising the availability of a thrust reverser |
| RU2015129112A RU2660719C2 (ru) | 2012-12-17 | 2013-12-06 | Оптимизация готовности к работе реверсора тяги |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1262148A FR2999656B1 (fr) | 2012-12-17 | 2012-12-17 | Optimisation de la disponibilite d'un inverseur de poussee |
| FR1262148 | 2012-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014096619A1 true WO2014096619A1 (fr) | 2014-06-26 |
Family
ID=47833275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2013/052987 Ceased WO2014096619A1 (fr) | 2012-12-17 | 2013-12-06 | Optimisation de la disponibilite d'un inverseur de poussee |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9464595B2 (fr) |
| FR (1) | FR2999656B1 (fr) |
| GB (1) | GB2523688B (fr) |
| RU (1) | RU2660719C2 (fr) |
| WO (1) | WO2014096619A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10443540B2 (en) * | 2015-05-08 | 2019-10-15 | United Technologies Corporation | Thrust reversal for turbofan gas turbine engine |
| US10054079B2 (en) | 2016-02-09 | 2018-08-21 | Woodward, Inc. | Thrust reverser actuating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020157377A1 (en) * | 2001-04-30 | 2002-10-31 | Terry Ahrendt | System and method for controlling the stowage of jet engine thrust reversers |
| US20050075769A1 (en) * | 2003-10-01 | 2005-04-07 | Eschborn David M. | Aircraft accessory monitor |
| US20100242434A1 (en) * | 2009-03-25 | 2010-09-30 | Snecma | Method of monitoring a thrust reverser |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2706536B1 (fr) * | 1993-06-16 | 1995-07-21 | Snecma | Vérin d'inverseur de poussée comportant un dispositif de verrouillage interne et un dispositif de détection de la panne du dispositif de verrouillage interne. |
| FR2920201B1 (fr) * | 2007-08-20 | 2013-08-23 | Aircelle Sa | Systeme de commande d'au moins un actionneur de capots d'un inverseur de poussee pour turboreacteur et procede de test du systeme |
| FR2922959B1 (fr) * | 2007-10-31 | 2009-12-04 | Airbus France | Systeme de controle et procede de controle. |
| FR2930973B1 (fr) * | 2008-05-06 | 2010-04-23 | Airbus France | Procede et dispositif de mise en oeuvre des inverseurs de poussee d'un aeronef |
| GB2510635B (en) * | 2013-02-12 | 2017-11-01 | Ge Aviat Systems Ltd | Method for predicting faults in an aircraft thrust reverser system |
-
2012
- 2012-12-17 FR FR1262148A patent/FR2999656B1/fr active Active
-
2013
- 2013-12-06 WO PCT/FR2013/052987 patent/WO2014096619A1/fr not_active Ceased
- 2013-12-06 GB GB1510329.4A patent/GB2523688B/en active Active
- 2013-12-06 RU RU2015129112A patent/RU2660719C2/ru active
- 2013-12-06 US US14/651,746 patent/US9464595B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020157377A1 (en) * | 2001-04-30 | 2002-10-31 | Terry Ahrendt | System and method for controlling the stowage of jet engine thrust reversers |
| US20050075769A1 (en) * | 2003-10-01 | 2005-04-07 | Eschborn David M. | Aircraft accessory monitor |
| US20100242434A1 (en) * | 2009-03-25 | 2010-09-30 | Snecma | Method of monitoring a thrust reverser |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150361920A1 (en) | 2015-12-17 |
| RU2015129112A (ru) | 2017-01-23 |
| US9464595B2 (en) | 2016-10-11 |
| GB2523688B (en) | 2019-10-02 |
| GB201510329D0 (en) | 2015-07-29 |
| GB2523688A (en) | 2015-09-02 |
| FR2999656B1 (fr) | 2017-11-17 |
| FR2999656A1 (fr) | 2014-06-20 |
| RU2660719C2 (ru) | 2018-07-09 |
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