CN108910078A - Control gap and rigidity simulation device for flutter model - Google Patents
Control gap and rigidity simulation device for flutter model Download PDFInfo
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- CN108910078A CN108910078A CN201810662848.9A CN201810662848A CN108910078A CN 108910078 A CN108910078 A CN 108910078A CN 201810662848 A CN201810662848 A CN 201810662848A CN 108910078 A CN108910078 A CN 108910078A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
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- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
The invention relates to a control gap and rigidity simulation device for a flutter model, wherein the flutter model comprises a main wing surface structure and a control surface structure which are spaced from each other, the control gap and rigidity simulation device is connected between the main wing surface structure and the control surface structure, and the control gap and rigidity simulation device comprises: a steering stiffness adjustment mechanism connected to and suspended from the control surface structure; and a steering clearance control mechanism connected to the mainplane structure and forming a steering clearance, the steering stiffness adjustment mechanism being configured to be movable in the steering clearance provided by the steering clearance control mechanism but constrained in its movement within the steering clearance by the steering clearance control mechanism. The invention also relates to a method for simulating the steering clearance and the rigidity of the flutter model. By designing a brand-new control mechanism and method for the control clearance, the combination of different control rigidity and different clearances is realized, so that the experimental research on the influence of the control surface clearance on the model flutter characteristic is developed.
Description
Technical field
The present invention relates to a kind of for the manipulation gap of flutter model and rigidity analogue, and further relates to a kind of use
Method in the manipulation gap and rigidity of simulation flutter model.
Background technique
After control surface on aircraft main plane band, gap is inevitably present in shaft and actuating system.In addition,
During aircraft utilization, due to factors such as fretting wears, gap also can constantly change.The presence in gap can cause pole
It limits ring oscillation (LCO), and seaworthiness clause regulation, need to verify control surface gap by testing to the shadow of airplane flutter characteristic
It rings.
In traditional flutter model design, manipulation rigidity is simulated with torsionspring, as shown in fig. 1.Work as control surface
When 5 around hinge shafts (that is, pivotal axis 3) deflect, by the constraint of torsionspring 4, it cannot rotate freely, just generate
Manipulation rigidity.
Though the adjusting of control surface manipulation rigidity may be implemented in this conventional method, it cannot simulate control surface gap,
The adjusting that can not achieve manipulation gap, it is thus impossible to carry out the test in relation to gap content.
In the prior art, such as known a kind of for the flat vertical fin attachment device of flutter model, it is flat that this is used for flutter model
Vertical fin attachment device includes lower supporting rod, U-shaped spring, upper strut, rotating arm, vertical fin connector, wherein is connected on rotating arm
Have horizontal tail beam, horizontal tail is connected by horizontal tail beam with rotating arm, rotating arm one end and being hinged with vertical fin connector with hang down
Tail boom is connected, and point is connected by gap adjustment nut with upper strut before the other end end of rotating arm, the upper strut other end and
The U-shaped side of U-shaped spring is connected, and another U-shaped side of U-shaped spring is connected by lower supporting rod with vertical fin beam.The technology is related to entirely dynamic
The connection of horizontal tail and vertical fin can not accurately control the manipulation gap although manipulation rigidity and manipulation gap can be simulated.
In another example, it is also known that a kind of experimental rig, it include spar in wing, wing outer spar, bending the support of bearing,
It is bent bearing cover, torsion bearing bracket, torsional axis, flexural spring, torsionspring, bent gap limit cornual plate and torsion
Gap limit cornual plate；Outer wing can follow rotating together for torsion bearing bracket, thus bending direction in opposite inner wing realization
Backlash nonlinearity；Outer wing can also follow rotating together for torsional axis, so that the gap of torsional direction is non-in opposite inner wing realization
Linearly.The technology is related to the design of folded wing flutter model, although manipulation gap can be simulated, is not related to manipulating rigidity
Adjusting.
In other words, even if only relate in the prior art adjust manipulation rigidity or adjust manipulation gap or in the presence of
Not only it adjusts manipulation rigidity but also adjusts manipulation gap, but the adjusting for manipulating gap is very rough, accurate adjust effectively to open is not achieved
Open up the requirement of flutter test.
Therefore, existing always in flutter model effectively can simulate control surface gap simultaneously and manipulate the demand of rigidity.
Summary of the invention
According to the present invention it is possible to overcome the shortcomings that not can be carried out backlash in conventional method.By designing completely new behaviour
Vertical gap control mechanism realizes the combination of different manipulation rigidity and different gap, to carry out control surface gap to model flutter
The experimental study that characteristic influences.
Specifically, the present invention provides a kind of for the manipulation gap of flutter model and rigidity analogue, it is described to quiver
The model that shakes includes the main plane structure being separated from each other and control surface structure, and the manipulation gap is connect with rigidity analogue
Between the main plane structure and the control surface structure, which includes with rigidity analogue：Manipulate rigidity tune
Mechanism is saved, manipulation stiffness tuning mechanism, which connect with control surface structure and suspends from the control surface structure, stretches out；And manipulation
Gap control mechanism, manipulation gap control mechanism are connect with the main plane structure, and form a manipulation gap, wherein grasping
Vertical stiffness tuning mechanism is constructed to be permeable to move in the manipulation gap that the manipulation gap control mechanism provides, but it is transported
It is dynamic to be constrained within the manipulation gap by the manipulation gap control mechanism.
As a result, when the motion range of manipulation stiffness tuning mechanism is less than the ruler in the manipulation gap of manipulation gap control mechanism
Unfettered when very little, control surface structure rotates freely, and thus just produces movement clearance.But when manipulation stiffness tuning machine
When the motion range of structure is greater than the size in manipulation gap of manipulation gap control mechanism, due to being manipulated gap control machine
The constraint of structure just produces manipulation rigidity.For this purpose, the combination of different manipulation rigidity and different gap may be implemented.
Preferably, above-mentioned manipulation gap extends on the thickness direction of main plane structure, so that manipulation stiffness tuning
The motion range of mechanism also extends in a thickness direction, enables to obtain more compact space layout.
In particular, manipulation stiffness tuning mechanism may include the interconnecting piece connecting with control surface structure and separate manipulation
The hanging bar portion of face structure, bar portion can freely be put in the range of manipulating gap, in a thickness direction around a pivotal point
It is dynamic.
Especially, the manipulation gap control mechanism includes a pair that a distance is separated from each other along the thickness direction
Limit element, this respectively includes the convex-shaped arc surface contacted with bar portion to limit element.The convex-shaped arc surface refers to a curvature
Curved surface, and the curved surface protrudes outward, rather than it is recessed.
In an advantageous case, the convex-shaped arc surface has radius, and the convex-shaped arc surface is facing with each other, to constitute
The manipulation gap.The manipulation gap constituted by the convex-shaped arc surface, it can be advantageous to realize the fortune of limit element in-between
Dynamic and simple and reliable for structure, manipulation rigidity is easily quickly adjusted with control surface gap.
Especially it is preferred that the pair of limit element is configured to a pair longitudinally extended along the main plane structure
Round bar, the convex-shaped arc surface is made of the outer surface of the round bar or the pair of limit element is configured to include towards that
This lug boss outstanding, the convex-shaped arc surface are made of the outer surface of the lug boss.As a result, by adjusting the half of lug boss
Diameter manipulates the adjusting in gap easily to realize.
Advantageously, the cross section of this bar portion can be circle.Manipulation rigidity when this circle bar portion is for design
Calculating for be convenient and fast.
The present invention also provides a kind of method for simulating the manipulation gap and rigidity of flutter model, flutter model includes
The main plane structure and control surface structure being separated from each other, are connected with operation building between main plane structure and control surface structure
Gap and rigidity analogue, the manipulation gap and rigidity analogue include manipulation stiffness tuning mechanism and the control of manipulation gap
Mechanism makes to manipulate stiffness tuning mechanism and connect with the control surface structure and suspend from the control surface structure to stretch out, makes to grasp
Vertical gap control mechanism is connect with the main plane structure, and provides a manipulation gap, wherein makes to manipulate stiffness tuning machine
Structure moves in the manipulation gap provided by the manipulation gap control mechanism, but its movement is manipulated gap control machine
Structure is constrained within the manipulation gap.
By the simulation control surface gap and the experimental rig design method for manipulating rigidity, it can be achieved that between control surface
The combination of different manipulation rigidity and different gap may be implemented in gap and the simulation and adjusting for manipulating rigidity.
In a kind of advantageous approach, manipulation stiffness tuning mechanism include the interconnecting piece being connect with control surface structure and
Hanging bar portion far from the control surface structure, this method further include making the bar portion around a pivotal point in the manipulation
Freely swing in the range of gap, on the thickness direction of main plane structure with clearance angle.
Preferably, in this method, the manipulation gap control mechanism includes being separated from each other one section along the thickness direction
A pair of of limit element of distance, the pair of limit element respectively include the convex-shaped arc surface contacted with the bar portion, the convex
Cambered surface has radius, and the convex-shaped arc surface is facing with each other, to constitute the manipulation gap.Simply may be used thus, it is possible to realize
The structure leaned on, and quickly adjusted convenient for manipulation rigidity with control surface gap.
In particular, this method can also include according to the determination of the manipulation rigidity of the flutter model predetermined
The equivalent diameter of bar portion, and further according to the equivalent diameter and the manipulation gap control mechanism relative to the bar portion
Dimensional parameters determine the radius of the convex-shaped arc surface.
Especially, in the method, manipulation gap control mechanism relative to the dimensional parameters of bar portion include clearance angle,
Pivotal point to constitute the outer surface of the distance in the center of circle of convex-shaped arc surface, bar portion to the stroke distances of convex-shaped arc surface, this is first to limit
The spacing of part.By these dimensional parameters, accurately calculating for manipulation rigidity may be implemented, to obtain control surface gap and behaviour
The accurate simulation of vertical rigidity.
Detailed description of the invention
Fig. 1 shows flutter model main plane according to prior art and control surface connection schematic diagram；
Fig. 2 shows according to an embodiment of the invention for the manipulation gap of flutter model and rigidity analogue
Arrangement schematic diagram；
Fig. 3 shows the manipulation stiffness tuning mechanism for manipulating gap and rigidity analogue of the embodiment according to fig. 2
Working principle diagram；
Fig. 4 show according to another embodiment of the present invention for the manipulation gap of flutter model and rigidity analogue
Arrangement schematic diagram；
Fig. 5 shows the manipulation stiffness tuning mechanism in the manipulation gap and rigidity analogue according to the embodiment in Fig. 4
Working principle diagram；
Fig. 6 shows the design flow diagram in the manipulation gap and rigidity analogue according to the present invention for flutter model.
It should be noted that the attached drawing of reference is not all drawn to scale, but can expand to illustrate each aspect of the present invention, and
This respect, attached drawing are not necessarily to be construed as restrictive.
Specific embodiment
According to the present invention, flutter model generally comprises main plane structure and control surface structure, wherein main plane structure master
The stabilization being used in simulated flight device, and control surface structure is mainly used for the elevator in simulated flight device.Advantageously,
Main plane structure and control surface structure are respectively designed to the form of the crossbeam longitudinally extended, especially metal crossbeam.
As shown in figs. 1 and 2, main plane structure 1 and control surface structure 5 are spaced longitudinally from one another arrangement.Especially,
Main plane crossbeam and control surface crossbeam are two crossbeams generally run parallel to one another.It in the present invention, can be by term " longitudinal direction "
It is defined as the main extending direction of main plane structure 1 and control surface structure 5, and " width direction " refers to transverse to longitudinal side
To.When taking along the width direction to main plane structure 1 and control surface structure 5, as shown in figs. 3 and 5, master can be limited
The thickness direction or short transverse of airfoil structure 1 and control surface structure 5.
Manipulation gap according to the present invention and rigidity analogue be connected to main plane structure 1 and control surface structure 5 it
Between, i.e. between main plane structure 1 and control surface structure 5.Other than manipulation gap and rigidity analogue, usually may be used
Bracket 2 and optional hinge shaft 3 etc. are connected between main plane crossbeam and control surface crossbeam.Simultaneously in view of these components
Non- is improvement emphasis of the invention, hereafter be will not be described in great detail.
It manipulates gap and rigidity analogue mainly includes Liang Ge mechanism, is i.e. manipulation stiffness tuning mechanism 10 and operation building
Gap control mechanism 20, they are respectively used to simulation manipulation rigidity and generate manipulation gap.Manipulation stiffness tuning mechanism 10 is manipulating
It is connected thereto at face structure 5, and stretches out from the control surface structure 5 suspension, prolongs especially towards manipulation gap control mechanism 20
It stretches, and manipulates and be connected thereto at gap control mechanism 20 and main plane structure 1, as clearly shown in Figure 2.
Preferably, manipulation gap control mechanism 20 can also be designed to extend from main plane structure 1, such as overhang out, be special
It is not directed towards manipulation stiffness tuning mechanism 10 to overhang out, as shown in Figure 2.But manipulation gap control mechanism 20 can also design
Extend at the longitudinal direction substantially along main plane structure 1, as shown in Figure 4.
In all cases, manipulation gap control mechanism 20 is provided which a manipulation gap, and manipulates stiffness tuning mechanism 10
It is constructed to be permeable to move in the manipulation gap, but its movement is constrained in the operation building by the manipulation gap control mechanism 20
Within gap.
More specifically, when the motion range of manipulation stiffness tuning mechanism 10 is less than the manipulation of manipulation gap control mechanism 20
Unfettered when the size in gap, control surface structure 5 rotates freely, and thus just produces movement clearance.But when manipulation
The motion range of stiffness tuning mechanism 10 be greater than manipulation gap control mechanism 20 manipulation gap size when, due to by
The constraint for manipulating gap control mechanism 20, just produces manipulation rigidity, control surface structure 5 can not rotate freely at this time, also
It is that movement clearance disappears or says no further movement clearance.At this moment, manipulation rigidity becomes certain numerical value.
As being appreciated that, term " manipulation gap ", Qian Zheshi different from the meaning of " movement clearance " in the present invention
Refer to the interstitial structure of physical presence, and the latter then refers to the movable range of reality of manipulation stiffness tuning mechanism 10.Therefore, when
When being manipulated the constraint of gap control mechanism 20, also just there is no " movement clearances " that can move.
Advantageously, thickness direction of the manipulation gap in the aforementioned definitions of main plane structure 1 (or control surface structure 5)
Upper extension.Therefore, the movement for manipulating stiffness tuning mechanism 10 predominantly makees such as Fig. 3 within manipulation gap in a thickness direction
With 5 shown in move up and down.
In particular, manipulation stiffness tuning mechanism 10 may include the interconnecting piece connecting with control surface structure 5 and separate behaviour
The bar portion 18 of vertical face structure 5 vacantly stretched out.Especially, it manipulates the interconnecting piece of stiffness tuning mechanism 10 and bar portion 18 can be with one
Body forms (as shown in Figure 3) or is connected to each other by connection type appropriate.
In flutter model of the invention, control surface structure 5 can be rotated around a pivotal point X.Pivotal point X is also possible to
Hinge pivot point.It it will be understood that pivotal point X is not necessarily physically existing site, but can be virtual
Point.In manipulation gap according to the present invention and rigidity analogue, this can be formed in manipulation stiffness tuning mechanism 10
Pivotal point X.
In particular, as shown in Figure 3, seeing in the width direction, the bar portion of control surface crossbeam and manipulation stiffness tuning mechanism 10
18 are located in the opposite sides of pivotal point X.As previously mentioned, control surface structure 5 can be in the side of pivotal point X (in Fig. 3
For right side) on rotated around pivotal point X, and bar portion 18 can then enclose on the opposite side (in Fig. 3 be left side) of pivotal point X
It is rotated around pivotal point X.
Preferably, the bar portion 18 of manipulation stiffness tuning mechanism 10 can be around pivotal point X in the aforementioned model for manipulating gap
Freely swing or pivot in enclosing, on the thickness direction (that is, up and down direction in Fig. 3) of crossbeam.
Advantageously, manipulation gap control mechanism 20 may include being separated from each other a distance h along aforementioned thicknesses direction
A pair of of limit element 22.This respectively includes the convex contacted with the bar portion 18 of manipulation stiffness tuning mechanism 10 to limit element 22
Cambered surface 24.
It is understood that so-called convex-shaped arc surface 24 refers to the curved surface with a curvature, and the curved surface protrudes outward, and
It is not recessed.Convex-shaped arc surface 24 can be the other parts curved surface outstanding from limit element 22, but limit element 22 itself
It can be exactly convex-shaped arc surface 24.In addition, convex-shaped arc surface 24 can the cylinder that extends longitudinally of spherical in shape, bus or semicolumn
Shape or even have part curved surface any suitable characteristics, as long as in the width direction sectional view (for example, Fig. 3 and
There is arch section in Fig. 5).
In any case, which all at least has a kind of radius r, but includes a variety of different radiuses
It is contemplated that.It is understood that a pair of of convex-shaped arc surface 24 can be facing with each other, to constitute manipulation gap control mechanism
20 manipulation gap.More preferably, the shortest distance between convex-shaped arc surface 24 (its outer surface) constitutes manipulation gap.
As shown in Figures 4 and 5, this can be configured to a pair longitudinally extended along main plane structure 1 to limit element 22
Round bar, and convex-shaped arc surface 24 is then made of the outer surface of the round bar.Especially, this is generally parallel to each other to round bar, then
Parallel distance between them constitutes manipulation gap.
Again as shown in Figure 3, this can be configured to limit element 22 to include lug boss outstanding toward each other, and convex
Shape cambered surface 24 is made of the outer surface of the lug boss.In this embodiment, this may also include that limit element 22
This pair of plate-shaped component staggered relatively, and lug boss is then respectively from this to flat platelike component upper process, especially close
It manipulates at the end place, particularly least significant end of stiffness tuning mechanism 10.
In this embodiment, similarly with bar portion 18 above, this can be from main plane structure 1 to limit element 22
It overhangs.For example, limit element 22 also may include the interconnecting piece connecting with main plane structure 1 and overhang.Particularly advantageous
It is that the free powder end of the overhang is arranged in convex-shaped arc surface 24, as being best illustrated in Fig. 3.
It is further noted that this separately includes thickness t to limit element 22, thickness t is dimensioned to so that working as power
When being applied to the limit element 22, which can bear some strength, and is unlikely to be destroyed, for example, deforms, is disconnected
It splits or tears.
Manipulating the motion range of stiffness tuning mechanism 10, such as its bar portion 18 in manipulation gap can be by angle, θ come table
Show.When the middle in the manipulation gap is arranged in 18 through-thickness of bar portion, phase is answered to the range of motion theta of upper and lower two sides
Deng.Of course, it is also contemplated that convex-shaped arc surface 24 is in asymmetrical arrangement about the bar portion 18, angle, θ and unequal at this time, and
It is and one distance dependent in 18 to two convex-shaped arc surfaces of bar portion 24.
Particularly advantageously, stiffness tuning mechanism 10 is manipulated, the cross section of such as its bar portion 18 is circle.Due to circle
The distance in any point to the center of circle on the outer surface of component is identical, and therefore, the bar portion 18 of round bar form is in itself and convex-shaped arc surface 24
Distance when contact from contact point to the center of circle is constant all the time, this is conducive to caused by being avoided the position due to bar portion 18 from deviateing
Calculate error.However, other cross-sectional shapes of bar portion 18, such as rectangle, square, ellipse or other polygons also exist
Within the scope of the present invention.
20 working principle diagram of gap control mechanism is manipulated according to shown in Fig. 3 and 5, as limited above, manipulates gap
It is indicated with angle, i.e. θ, the vertex of the convex-shaped arc surface 24 of the pivotal point X of bar portion 18 to limit element 22 is (that is, a pair of of convex-shaped arc surface
Apart from the nearest point of central axis or the outer surface of bar portion 18 that is arranged between them of distance between them) distance
For l, the distance of the movement clearance on thickness direction is that (i.e. the vertex of the convex-shaped arc surface of limit element 22 is to manipulating rod outer surface by s
Distance), three's transformational relation is shown below：
S=l*tan (θ) (1)
In Fig. 3, the radius r of the convex-shaped arc surface of limit element 22, the distance h between a pair of of limit element, bar portion
18 equivalent diameter d and the distance s of movement clearance meet following relational expression：
In as shown in Figure 5, the distance s of movement clearance is also designed according to formula (1).
In the following, illustratively illustrating a kind of manipulation gap and rigidity for simulating flutter model according to the present invention
The detailed process of method：
First, design the flutter model with control surface：
According to traditional flutter model design method, main plane structure 1, control surface structure 5 are designed (for example, main plane is big
Beam and control surface crossbeam), optional linkage and bracket 2, and select suitable bearing.
Second, it defines gap state and manipulates rigidity accordingly：
According to the content of flutter test, one group of gap { θ is first definednAnd one group of manipulation rigidity { Km}。
1) bar portion of design manipulation gap control mechanism；
According to model main plane structure to the distance of rudder face structure, length l can be defined first.Then according to fixed in advance
One group of manipulation rigidity { K of justicem, design corresponding gauge diameter (should be equivalent diameter herein), shape under each manipulation rigidity
At one group of different diameter specifications { dmBar portion.Length l need to guarantee the bar portion of manipulation stiffness tuning mechanism 10 during the motion
Main plane structure is not touched, and does not depart from the constraint of manipulation gap control mechanism.
For example, the calculation method of the diameter of bar portion is such as when the section of bar portion is round (that is, bar portion is configured to round bar)
Under：
In formula, E indicates the elasticity modulus of material.
2) Preliminary design gap control mechanism；
According to the sectional dimension of flutter model main plane structure, the manipulation gap control mechanism of Design Fundamentals is obtained a pair of
Distance h between limit element, wherein the length of limit element, width need to guarantee to manipulate the bar of stiffness tuning mechanism 10
Portion does not depart from the control range of limit element during the motion, and thickness t needs to guarantee enough rigidity, does not make its hair
Change shape, this can be designed according to specific moulded dimension and anticipated load.
3) limit element round end radius is designed；
According to predefined gap state { θn, referring to formula (1), one group of movement clearance distance { s can be calculatedn,
According to formula (2), the bar portion of each diameter specifications is calculated under different gap state, required limit element it is convex
Radius { the r of shape cambered surfacem-n}.Gauge diameter { dm, gap state (i.e., clearance angle) { θn, the convex-shaped arc surface of limit element
Radius { rm-nCorresponding relationship it is as shown in table 1：
The design point table of 1 limit element of table
4) finally design is bolted；
Spiro keyhole position is designed on limit element and bar portion, for connecting with main plane structure and control surface structure 5.But
The present invention is not limited to be threadedly coupled, it may also be envisaged that known other machinery connection type.
According to design cycle shown in Fig. 6 it is found that manipulation rigidity can be controlled by adjusting the equivalent diameter d of bar portion
Size, the radius r of convex-shaped arc surface by adjusting the limit element in manipulation gap control mechanism grasping bar portion to realize
The adjusting of movement clearance in vertical gap control mechanism.The distance s of the movement clearance is by gauge diameter d and convex arc as a result,
The co- controlling of both radius r in face.
In addition, manipulation stiffness tuning mechanism 10, especially its bar portion is with manipulation gap control mechanism with unique corresponding
Relationship, i.e., a kind of bar portion of specification correspond to a kind of limit element of specification, and the two needs match, and design size can
To be formulated according to specific testing program.
It is understood that compared with traditional stiffness simulation method, the advantage of the invention is that it is simple and reliable for structure, and
Manipulation rigidity and manipulation gap are easy quickly to be adjusted.
Although of the invention to describe referring to the device for connecting main plane crossbeam and control surface crossbeam on aircraft
Various embodiments, it should be understood, however, that the embodiment in the scope of the present invention can be applied to have the function of similar structure and/or
Other aircraft on rudder face structure etc..
The description of front has been presented for many features and advantage, including various alternative embodiments and device and
The details of the structure and function of method.It is intended that it is illustrative, it is not exhaustive or restrictive.For this
It obviously can be complete indicated by the wide in range upper meaning to the term as expressed by appended claims for the technical staff in field
Various remodeling are made within the scope of portion, especially in terms of the arrangement of structure, material, element, component, shape, size and component,
Including the combination in these aspects concept described herein.In these various remodeling without departing from appended claims
Spirit and scope degree in, it is meant that they are also incorporated herein.
Claims (12)
1. a kind of for the manipulation gap of flutter model and rigidity analogue, the flutter model includes the master being separated from each other
Airfoil structure and control surface structure, the manipulation gap and rigidity analogue are connected to the main plane structure and the manipulation
Between the structure of face,
It is characterized in that, the manipulation gap includes with rigidity analogue：
Stiffness tuning mechanism is manipulated, the manipulation stiffness tuning mechanism connect with the control surface structure and from the control surface
Structure suspension is stretched out；And
Gap control mechanism is manipulated, the manipulation gap control mechanism is connect with the main plane structure, and forms a manipulation
Gap,
Wherein, the manipulation stiffness tuning mechanism is constructed to be permeable in the manipulation gap that the manipulation gap control mechanism provides
Middle movement, but its movement is constrained within the manipulation gap by the manipulation gap control mechanism.
2. manipulation gap and rigidity analogue as described in claim 1, which is characterized in that the manipulation gap is in the master
Extend on the thickness direction of airfoil structure.
3. manipulation gap and rigidity analogue as claimed in claim 2, which is characterized in that the manipulation stiffness tuning mechanism
Including the interconnecting piece being connect with the control surface structure and far from the hanging bar portion of the control surface structure, the bar portion energy
Freely swing in the range of the manipulation gap, on the thickness direction around a pivotal point.
4. manipulation gap and rigidity analogue as claimed in claim 3, which is characterized in that the manipulation gap control mechanism
A pair of of limit element including being separated from each other a distance along the thickness direction, the pair of limit element respectively includes and institute
State the convex-shaped arc surface of bar portion contact.
5. manipulation gap and rigidity analogue as claimed in claim 4, which is characterized in that the convex-shaped arc surface has radius
(r), and the convex-shaped arc surface is facing with each other, to constitute the manipulation gap.
6. manipulation gap and rigidity analogue as claimed in claim 5, which is characterized in that the pair of limit element construction
At a pair of of the round bar longitudinally extended along the main plane structure, the convex-shaped arc surface is made of the outer surface of the round bar, or
The pair of limit element of person is configured to include lug boss outstanding toward each other, and the convex-shaped arc surface is by the outer of the lug boss
Surface is constituted.
7. manipulation gap and rigidity analogue as claimed in claim 6, which is characterized in that the cross section of the bar portion is circle
Shape.
8. a kind of method for simulating the manipulation gap and rigidity of flutter model, the flutter model includes being separated from each other
Main plane structure and control surface structure, be connected between the main plane structure and the control surface structure manipulation gap and just
Simulator is spent,
It is characterized in that, the manipulation gap and rigidity analogue include that manipulation stiffness tuning mechanism and manipulation gap control machine
Structure makes the manipulation stiffness tuning mechanism connect with the control surface structure and suspend from the control surface structure and stretches out, makes
The manipulation gap control mechanism is connect with the main plane structure, and provides a manipulation gap,
Wherein, the manipulation stiffness tuning mechanism is provided in the manipulation gap provided by the manipulation gap control mechanism
It is dynamic, but its movement is constrained within the manipulation gap by the manipulation gap control mechanism.
9. method according to claim 8, which is characterized in that the manipulation stiffness tuning mechanism includes and the control surface knot
The hanging bar portion of the interconnecting piece of structure connection and the separate control surface structure, the method also includes surrounding the bar portion
One pivotal point in the range of the manipulation gap, on the thickness direction of the main plane structure with clearance angle (θ) freely
It swings.
10. method as claimed in claim 9, which is characterized in that the manipulation gap control mechanism includes along the thickness side
A pair of of limit element of (h) from a distance to each other, what the pair of limit element respectively included contacting with the bar portion
Convex-shaped arc surface, the convex-shaped arc surface has radius (r), and the convex-shaped arc surface is facing with each other, to constitute the manipulation gap.
11. method as claimed in claim 10, which is characterized in that further include the behaviour according to the flutter model predetermined
Vertical rigidity (K) determines the equivalent diameter (d) of the bar portion, and controls machine further according to the equivalent diameter and the manipulation gap
Structure determines the radius (r) of the convex-shaped arc surface relative to the dimensional parameters of the bar portion.
12. method as claimed in claim 11, which is characterized in that the manipulation gap control mechanism is relative to the bar portion
The dimensional parameters include the distance (l), described of clearance angle (θ), the pivotal point to the center of circle for constituting the convex-shaped arc surface
The outer surface of bar portion is to the stroke distances (s) of the convex-shaped arc surface, the spacing (h) of the pair of limit element.
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