CN109710985A - A kind of ram-air turbine folding and unfolding actuator quick release mechanism design method - Google Patents
A kind of ram-air turbine folding and unfolding actuator quick release mechanism design method Download PDFInfo
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Abstract
A kind of Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method adjusted based on nonlinear dampling, steps are as follows: one, the parameter of damping hole system: position, pore size and quantity is set；Two, RAT system simulation model is established, relevant parameter is inserted in simulation model；Three, device release conditions are simulated in batches, obtain corresponding displacement-time curve；Four, position is identical, and the asynchronous device release conditions in aperture obtain corresponding displacement-time curve；Five, aperture is identical, and the asynchronous device release conditions in position obtain corresponding displacement-time curve；Six, select that release time is short, good buffer effect correspondence damping hole system parameter: position, pore size and quantity, the design result as folding and unfolding actuator quick release mechanism；By above step, the present invention has sufficiently taken into account the hydraulic cushion effect for discharging the just quick release of journey and discharging last journey, is able to achieve the safely and fast release of Ram Air Turbine Systems.
Description
Technical field
The present invention provides a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method, it is related to a kind of base
In the ram-air turbine folding and unfolding actuator quick release mechanism design method that nonlinear dampling is adjusted, belong to ram-air turbine
(RAT) design field.
Background technique
RAT system is referred to as " last root straw to clutch at " of aircraft, and main function is to lose all actives in aircraft
Emergency power source is provided to aircraft in the case where power and auxiliary power, to guarantee that aircraft still can be steered under emergency rating.
RAT is discharged rapidly by the spring compression force of itself storage and is expanded to operating position by RAT folding and unfolding actuator, is being released
It during putting, is controlled by the pressure-flow to cavity oil liquid, completes the adjusting of folding and unfolding actuator internal nonlinearity damping, from
And the hydraulic cushion effect for discharging just journey quick release and discharging last journey can be combined, to realize that system safely and fast discharges
Purpose.The pressure-flow control of folding and unfolding actuator cavity inner fluid relies primarily on damping hole adjusting, traditional actuator damping
Design method is obtained often through experience, it is difficult to the result optimized according to different applying working conditions.Here, proposing one kind
Based on the RAT system folding and unfolding actuator quick release mechanism design method that nonlinear dampling is adjusted, in compressed spring and multistage resistance
In the structure basis of Buddhist nun hole buffering, AMESim (Advanced Modelling Environment for performing is utilized
Simulation of engineering systems, advanced engineering system simulation modeling environment) emulation and control variate method,
Obtain preferred plan.
Summary of the invention
The purpose of the present invention: a kind of RAT system folding and unfolding actuator quick release machine adjusted based on nonlinear dampling is proposed
Structure design method sufficiently takes into account the hydraulic cushion effect for discharging the just quick release of journey and discharging last journey, realizes ram-air whirlpool
The safely and fast release purpose of wheel system.
Technical solution of the present invention:
The present invention relates to a kind of ram-air turbine (i.e. RAT) folding and unfolding actuator quick release mechanism design method, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, it includes such as
Lower step:
The parameter of damping hole system (3), (4): position, pore size and quantity is arranged in inner casing (2) oil circuit in step 1；
Wherein, " position " described in step 1, it refers to that damping hole ties up in release travel and is opened on piston rod (5)
Generally there are 2~4 ranks in axial position, damping hole system, identical with the axial position of level-one damping hole；
Wherein, " aperture " described in step 1, it refers to the pore size of circular damper apertures, its feature be closer to
Its aperture of the damping hole of end of travel is smaller；
Step 2 establishes the RAT folding and unfolding actuator Hydraulic System Simulation model based on AMESim, Related product parameter is filled out
Enter in simulation model；
Wherein, " RAT folding and unfolding actuator Hydraulic System Simulation model of the foundation based on AMESim, will described in step 2
Related product parameter is inserted in simulation model ", specific practice is as follows:
(1) in view of model complexity and analysis target, reasonable simplification is done to model: mainly considering that RAT is received when modeling
Actuator expansion dynamic process is put, does not consider that the electromagnet starting time and the action process of locking mechanism etc. is unfolded；
(2) in AMESim draft mode, integrated use machinery library, signal library, corresponding function in hydraulic component design library
Element builds RAT folding and unfolding actuator collapsed state analogue system；
(3) enter submodel mode, the mathematical model of counter element in analogue system is set；
(4) enter parameter mode, by pair in the actual parameter input simulation model of RAT folding and unfolding actuator under collapsed state
Element is answered, including the aperture, position and quantity for corresponding to damping hole system in inner casing oil circuit；
Step 3, in the case where designing the initial constant situation of elastic force, with control variate method, simulate in batches damping hole system (3),
(4) aperture, position be constant, the asynchronous device release conditions of quantity, obtains corresponding displacement-time curve；
Wherein, " control variate method " described in step 3, it refers in damping hole coefficient amount, aperture, position three elements
In, it specifies two of them element constant, a kind of element of remainder is set as variable, and specify different variate-values, obtains and mutually strain
Device release conditions simulation result under magnitude.
Wherein, " in the case where designing the initial constant situation of elastic force, with control variate method, batch is emulated described in step 3
Damping hole system (3), (4) aperture, position be identical out, the asynchronous device release conditions of quantity, and it is bent to obtain corresponding displacement versus time
Line ", specific practice are as follows:
(1) it is arranged first at 70%~85% position of release travel and at 85%~100% position of release travel respectively
Rank and second-order damping hole system, damping hole system aperture are
(2) keep damping hole system position, aperture constant, adjusting every rank damping hole coefficient amount is 3~6, in AMESim
Operation batch emulates, and obtains displacement-time curve when device discharges under each operating condition.
Step 4, in the case where designing the initial constant situation of elastic force, with control variate method, simulate in batches damping hole system (3),
(4) quantity, position are identical, and the asynchronous device release conditions in aperture obtain corresponding displacement-time curve；
Wherein, " in the case where designing the initial constant situation of elastic force, with control variate method, batch is emulated described in step 4
Damping hole system (3), (4) quantity, position are identical out, the asynchronous device release conditions in aperture, show that corresponding displacement versus time is bent
Line ", specific practice are as follows:
(1) it is arranged first at 70%~85% position of release travel and at 85%~100% position of release travel respectively
Rank and second-order damping hole system, every rank damping hole coefficient amount are 3~6；Damping hole system aperture is
(2) keep damping hole system position, quantity constant, adjusting every rank damping hole system aperture is1.5,
Operation batch emulates in AMESim, obtains displacement-time curve when device discharges under each operating condition.
Step 5, in the case where designing the initial constant situation of elastic force, with control variate method, simulate in batches damping hole system (3),
(4) quantity, aperture are identical, and the asynchronous device release conditions in position obtain corresponding displacement-time curve；
Wherein, " in the case where designing the initial constant situation of elastic force, with control variate method, batch is emulated described in step 5
Damping hole system (3), (4) quantity, aperture are identical out, the asynchronous device release conditions in position, show that corresponding displacement versus time is bent
Line ", specific practice are as follows:
(1) it is arranged first at 70%~85% position of release travel and at 85%~100% position of release travel respectively
Rank and second-order damping hole system, every rank damping hole coefficient amount are 3~6；Damping hole system aperture is
(2) keep damping hole system position, aperture constant, at 70%~85% position of release travel and release travel
The damping hole system of different location is respectively set at the position 85%-100%, operation batch emulates in AMESim, obtains each operating condition
Displacement-time curve when lower device discharges.
Wherein, Step 3: four, five sequence can be interchanged.
Step 6, the batch simulation result obtained according to step 3~step 5 select that release time is short, good buffer effect
Correspondence damping hole system (3), (4) parameter: position, pore size and quantity, as setting for folding and unfolding actuator quick release mechanism
Count result.
By above step, the folding and unfolding actuator quick release mechanism design scheme that can be optimized sufficiently is taken into account
It discharges the just quick release of journey and discharges the last hydraulic cushion effect of journey, it can be achieved that safely and fast releasing for Ram Air Turbine Systems
It puts.
Beneficial effects of the present invention:
A kind of Ram Air Turbine Systems folding and unfolding actuator adjusted based on nonlinear dampling according to the present invention is quick
Relieving mechanism design method is simple and easy, is easily achieved, and designed folding and unfolding actuator, which can sufficiently be taken into account, discharges the quick of first journey
Release and the hydraulic cushion effect for discharging last journey, realize the safely and fast release of Ram Air Turbine Systems.It can be widely applied to
Similar product, with good application prospect and economic benefit.
Detailed description of the invention:
Fig. 1 is the flow chart of the method for the invention.
Fig. 2 is quick release mechanism structural schematic diagram according to the present invention.
Wherein, 1- compressed spring, 2- inner casing, 3,4- damping hole system, 5- piston rod.
Fig. 3 is that the quick release mechanism under a typical condition discharges process displacement versus time simulation result.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings of the specification.It please refers to shown in Figure of description 1~3.
A kind of ram-air turbine folding and unfolding actuator quick release mechanism design method of the present invention, i.e., it is a kind of based on non-linear
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method adjusted is damped, its step are as follows:
Step (1) designs number rank difference position according to liquid substance volume invariability principle in inner casing (2) oil circuit
It sets, the damping hole system (3) of different pore size, different number, (4).In this example, 2 rank damping holes, the first rank damping hole system are set
(3), position is in release travel 70%~85%, aperture Quantity 3~6；Reach by release device
The flow in portion adjusts the rate of release of control RAT；Second-order damping hole system (4), position is in release travel 85%~100%, hole
Diameter isQuantity 3~6；
Step (2) establishes the device Hydraulic System Simulation model based on AMESim, and position, pore size and quantity are made
For variable element, insert in simulation model；Boundary condition and relevant parameter are set；
Step (3), with control variate method, simulates damping hole system in the case where designing the initial constant situation of elastic force in batches
(3), (4) aperture, position are identical, the asynchronous device release conditions of quantity, and it is bent to obtain the corresponding displacement versus time of cushion stroke
Line；
Step (4), with control variate method, simulates damping hole system in the case where designing the initial constant situation of elastic force in batches
(3), (4) quantity, position are identical, and the asynchronous device release conditions in aperture show that cushion stroke corresponds to displacement-time curve；
Step (5), with control variate method, simulates damping hole system in the case where designing the initial constant situation of elastic force in batches
(3), (4) quantity, aperture are identical, and the asynchronous device release conditions in position show that cushion stroke corresponds to displacement-time curve；
Step (6), the batch simulation result obtained according to step (3)~step (5), select release time it is short, buffering
The good correspondence damping hole system (3) of effect, (4) parameter, as final design scheme.Finally determining scheme are as follows: the first rank damping
Hole system (3) position is located at the 80% of release travel, aperture Quantity 4；Second-order damping hole system (4) position is located at release row
The 90% of journey, apertureQuantity 4, final release process displacement versus time calculated result is as shown in attached drawing 3.
Claims (7)
1. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method, i.e., a kind of to be adjusted based on nonlinear dampling
Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method, it is characterised in that: it is comprised the following steps:
The parameter of damping hole system (3), (4): position, pore size and quantity is arranged in inner casing (2) oil circuit in step 1；
Step 2 establishes the RAT folding and unfolding actuator Hydraulic System Simulation model based on AMESim, Related product parameter is inserted imitative
In true mode；
Step 3, with control variate method, simulates damping hole system (3), (4) in the case where designing the initial constant situation of elastic force in batches
Aperture, position be constant, the asynchronous device release conditions of quantity, obtains corresponding displacement-time curve；
Step 4, with control variate method, simulates damping hole system (3), (4) in the case where designing the initial constant situation of elastic force in batches
Quantity, position are identical, and the asynchronous device release conditions in aperture obtain corresponding displacement-time curve；
Step 5, with control variate method, simulates damping hole system (3), (4) in the case where designing the initial constant situation of elastic force in batches
Quantity, aperture are identical, and the asynchronous device release conditions in position obtain corresponding displacement-time curve；
The sequence of above-mentioned steps three, four, five can exchange；
Step 6, the batch simulation result obtained according to step 3~step 5 select that release time is short, pair of good buffer effect
Answer damping hole system (3), (4) parameter: position, pore size and quantity, the design knot as folding and unfolding actuator quick release mechanism
Fruit.
2. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method according to claim 1, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, feature exist
In:
In " position " described in step 1, it refers to that damping hole ties up in release travel the axial position being opened on piston rod (5)
It sets, there are 2~4 ranks in damping hole system, identical with the axial position of level-one damping hole；" aperture ", it refers to circular damper apertures
Pore size, its feature is that its aperture is smaller closer to the damping hole of end of travel.
3. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method according to claim 1, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, feature exist
In:
" the RAT folding and unfolding actuator Hydraulic System Simulation model based on AMESim is established, by Related product described in step 2
Parameter is inserted in simulation model ", specific practice is as follows:
(1) in view of model complexity and analysis target, reasonable simplification is done to model: mainly considering that RAT folding and unfolding is made when modeling
Dynamic process is unfolded in dynamic device, does not consider the action process that the electromagnet starting time and locking mechanism is unfolded；
(2) in AMESim draft mode, integrated use machinery library, signal library, corresponding function element in hydraulic component design library
Build RAT folding and unfolding actuator collapsed state analogue system；
(3) enter submodel mode, the mathematical model of counter element in analogue system is set；
(4) enter parameter mode, by the corresponding element in the actual parameter input simulation model of RAT folding and unfolding actuator under collapsed state
Part, including the aperture, position and quantity for corresponding to damping hole system in inner casing oil circuit.
4. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method according to claim 1, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, feature exist
In:
" control variate method " described in step 3, it refers in damping hole coefficient amount, aperture, position three elements, specifies
Two of them element is constant, a kind of element of remainder is set as variable, and specify different variate-values, obtained under relevant variable value
Device release conditions simulation result.
5. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method according to claim 1, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, feature exist
In:
Described in step 3 " in the case where designing the initial constant situation of elastic force, with control variate method, damping hole is simulated in batches
It is that (3), (4) aperture, position be identical, the asynchronous device release conditions of quantity, obtains corresponding displacement-time curve ", it is specific
Way is as follows:
(1) respectively at 70%~85% position of release travel and at 85%~100% position of release travel be arranged the first rank and
Second-order damping hole system, damping hole system aperture are
(2) keep damping hole system position, aperture constant, adjusting every rank damping hole coefficient amount is 3~6, is run in AMESim
Batch emulates, and obtains displacement-time curve when device discharges under each operating condition.
6. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method according to claim 1, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, feature exist
In:
Described in step 4 " in the case where designing the initial constant situation of elastic force, with control variate method, damping hole is simulated in batches
System (3), (4) quantity, position are identical, and the asynchronous device release conditions in aperture obtain corresponding displacement-time curve ", it is specific
Way is as follows:
(1) respectively at 70%~85% position of release travel and at 85%~100% position of release travel be arranged the first rank and
Second-order damping hole system, every rank damping hole coefficient amount are 3~6；Damping hole system aperture is
(2) keep damping hole system position, quantity constant, adjusting every rank damping hole system aperture isIn AMESim
Operation batch emulates, and obtains displacement-time curve when device discharges under each operating condition.
7. a kind of ram-air turbine folding and unfolding actuator quick release mechanism design method according to claim 1, i.e., one
The Ram Air Turbine Systems folding and unfolding actuator quick release mechanism design method that kind is adjusted based on nonlinear dampling, feature exist
In:
Described in step 5 " in the case where designing the initial constant situation of elastic force, with control variate method, damping hole is simulated in batches
System (3), (4) quantity, aperture are identical, and the asynchronous device release conditions in position obtain corresponding displacement-time curve ", it is specific
Way is as follows:
(1) respectively at 70%~85% position of release travel and at 85%~100% position of release travel be arranged the first rank and
Second-order damping hole system, every rank damping hole coefficient amount are 3~6；Damping hole system aperture is
(2) keep damping hole system position, aperture constant, at 70%~85% position of release travel and release travel 85%-
The damping hole system of different location is respectively set at 100% position, operation batch emulates in AMESim, obtains device under each operating condition
Displacement-time curve when release.
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