CN103994873B - A kind of flutter model trailing edge rudder face protection stop mechanism - Google Patents
A kind of flutter model trailing edge rudder face protection stop mechanism Download PDFInfo
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- CN103994873B CN103994873B CN201410155025.9A CN201410155025A CN103994873B CN 103994873 B CN103994873 B CN 103994873B CN 201410155025 A CN201410155025 A CN 201410155025A CN 103994873 B CN103994873 B CN 103994873B
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- stopper slot
- trailing edge
- rudder face
- positioning seat
- pressurized strut
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Abstract
Described flutter model trailing edge rudder face protection stop mechanism constitutes as follows: gag lever post, stopper slot, stopper slot positioning seat, pressurized strut and pressurized strut positioning seat；One end of described gag lever post is fixed on the trailing edge rudder face of flutter model, stopper slot positioning seat and pressurized strut positioning seat are positioned on the main plane connecting trailing edge rudder face, described, pressurized strut is fixedly linked with pressurized strut positioning seat, described flutter model trailing edge rudder face protection stop mechanism depends on aerofoil model completely, Quan be no matter single-blade surface model or machine model all can be arranged according to this method, not by other structure influences, there is independence；And mechanism is small and exquisite, is positioned at model, do not produce extra aerodynamic force.
Description
Technical field
The present invention relates to structure design and the application of stop mechanism, specifically provide one and quiver
The model trailing edge rudder face that shakes protection stop mechanism.
Background technology
Aerofoil tremor be aircraft awing, due to natural mode of vibration and the pneumatic couple of force of aerofoil
Close a kind of aeroelasticity wild effect produced.Need to be come by simulation calculation and wind tunnel test
Determine whether Flutter Boundaries meets the requirement of flight envelope.
The trailing edge rudder face tremor of flutter model is the important component part of flutter test, and tremor
Journey is accompanied by again risk and exists, so guard system is the important component part of flutter test,
The guard system of rudder face with safety, light weight, reusable for basic characteristics, have this three
The flutter test of flutter model is served important by this protection stop mechanism planting basic characteristics
Assosting effect.
The flutter model trailing edge rudder face protection that a kind of technique effect of the highly desirable acquisition of people is excellent
Stop mechanism.
Summary of the invention
It is an object of the invention to provide the excellent flutter model trailing edge rudder face of a kind of technique effect to prevent
Protect stop mechanism, flutter test can prevent the excessive vibration of trailing edge rudder face and at trailing edge rudder face
Tremor stops chatter phenomenon, the safety of protection flutter model at any time when occurring, and can release at any time
Restriction to model, proceeds flutter test, it is simple to observes chatter phenomenon and finds out tremor
Critical point.
Described flutter model trailing edge rudder face protection stop mechanism constitutes as follows: gag lever post 4, spacing
Groove 5, stopper slot positioning seat 6, pressurized strut 7 and pressurized strut positioning seat 8；Described gag lever post 4
One end be fixed on the trailing edge rudder face 1 of flutter model, stopper slot positioning seat 6 and pressurized strut are fixed
Position seat 8 is positioned on the main plane 2 connecting trailing edge rudder face, and described pressurized strut 7 positions with pressurized strut
Seat 8 is fixedly linked, and pressurized strut positioning seat 8 purpose is pressurized strut 7 is fixed on main plane 2
On, therefore, on the one hand pressurized strut positioning seat 8 to be ensured is fixed on main plane 2, the opposing party
Face pressurized strut to be ensured positioning seat 8 is by good for pressurized strut 7 fixed clamp.Stopper slot 5 one end and limit
Position groove positioning seat 6 slides and is connected, one end of described pressurized strut 7 and the other end phase of stopper slot 5
Even, described stopper slot 5 is enclosed within outside gag lever post 4 other end.
Described stopper slot 5 is internal is cavity structure, and stopper slot 5 is connected one end with pressurized strut 7
Cavity width less than the cavity width of stopper slot 5 other end.Gag lever post 4 is deep into stopper slot
5 central authorities, neither affect the vibration of rudder face under non-chatter state, again limit rudder face amplitude excessive
Dangerous vibration；When pressurized strut 7 is stretched out, stopper slot 5 is promoted to advance, when arriving certain displacement,
Snapping into stopper slot positioning seat 6, stopper slot 5 halts, and now gag lever post 4 is placed exactly in limit
The narrowest place of position groove 5, make gag lever post cannot free vibration, and then suppression gag lever post 4 place rudder
The vibration in face.
Described stopper slot 5 is connected one end with stopper slot positioning seat 6 and is provided with tongued structures 51,
Stopper slot 5 is connected by tongued structures with stopper slot positioning seat 6.Described tongued structures 51
Fit with stopper slot positioning seat 6 and do not affect the proper motion of stopper slot 5；When arrested state,
Stopper slot positions 6 and just blocks stopper slot 5, makes stopper slot 5 to continue to move to forward；
Tongued structures 51 and unusual light necessary with tongued structures 51 contact portion.
The axis of described pressurized strut 7 overlaps with the center line of tongued structures 51.Pressurized strut 7 and limit
Position groove 5 close fit, the shift length of pressurized strut 7 is slightly larger than the length of tongued structures 51；
When pressurized strut 7 bounces back, at stopper slot, 5 in protection state, when pressurized strut 7 is stretched out, stopper slot
5 are in arrested state.
Described gag lever post 4 is fixed on the main force support structure of trailing edge rudder face 1 of flutter model, and
And kinestate herein is consistent with the mass motion state of trailing edge rudder face 1.
Described gag lever post 4 gos deep into the oscillating region of main plane end can be pushed away according to the amplitude of rudder face
Calculate, choose the safe oscillating region of rudder face in test, extrapolate gag lever post and go deep into main plane
The oscillating region of 2 ends, adjusts the length of gag lever post 4 end, makes the oscillating region of end slightly
Aerofoil profile less than main plane 2 locality.The most neither affect the aerodynamic force of model, make again resistance away from
The longest, the oscillating region of gag lever post 4 end is big as far as possible, makes limit effect more preferable.
The plane at stopper slot place is vertical with the axis of gag lever post；Time static, the axis of gag lever post
Being positioned at the middle of stopper slot, stopper slot entangles the end of gag lever post completely；Stopper slot exists
Protection state, it may be assumed that time contactless with gag lever post, gag lever post end vibrates without danger at rudder
Shi Sizhou is the most contactless；Stopper slot is in arrested state, it may be assumed that the narrowest place of stopper slot clamps spacing
During bar, gag lever post 4 end is forced to vibrate.
Described flutter model trailing edge rudder face protection stop mechanism installation steps are as follows:
1. determine the position of gag lever post 4, gag lever post 4 median perpendicular in the rotating shaft of trailing edge rudder face 1,
Gag lever post 4 is between two junction points of trailing edge rudder face, and close to the position of main plane 2 root
Put；The most not only stopping effect is good, and big near the profile thickness of airfoil extension 120, it is simple to peace
Dress native system；
2. the shaft parallel of the position of stopper slot 5, stopper slot 5 center line and trailing edge rudder face 1 is determined,
And intersect with gag lever post 4 center line, specifically refer to Fig. 8, stopper slot center line and trailing edge rudder face 1
The distance of rotating shaft is: L2≤L1* (H21-H22)/H1, wherein: H1: trailing edge rudder face 1
Permission peak swing；L1: trailing edge rudder face 1 trailing edge and the distance of rotating shaft；H21: main plane
Profile thickness near the rotating shaft of 2；L2: stopper slot 5 center line and the distance of rotating shaft；H22:
Gag lever post 4 diameter and stopper slot about 5 thickness of two sides sum；As L2=L1* (H21-H22)
/ H1, such stopper slot is remote with rotating shaft distance, and moment is bigger, and effect is more preferable.Stopper slot big
Little should meet: the distance moved from protection state to arrested state should be less than the maximum of pressurized strut
Advance distance.
3. the position of stopper slot positioning seat 6 is determined: when stopper slot moves forward, block gag lever post completely,
When reaching arrested state, just contact with stopper slot positioning seat 6 and be caught by stop motion；
4. determining the position of pressurized strut 7, this position should meet: when push rod is packed up, and mechanism is in
Protection state, when push rod advances and do not arrives the limit, mechanism is in arrested state, simultaneously stopper slot
Limited groove positioning seat 6 blocks；
5. the position of pressurized strut positioning seat 8 is determined, as long as pressurized strut 7 can be fixed, start
Cylinder positioning seat 8 can freely arrange.
The installation of trailing edge rudder face protection stop mechanism focuses on coordination, according to aerofoil model trailing edge i.e. side
To the space of the position of main plane corresponding to rudder, determine the size of mechanism used, progressively determine machine
Relative position between structure.
Trailing edge rudder face is added by flutter model trailing edge rudder face of the present invention protection stop mechanism
Quality is minimum, and a whole set of flutter model trailing edge rudder face protection stop mechanism, after only gag lever post is positioned at
On edge rudder face, the light material such as aluminum or carbon fiber is used to make gag lever post to be additional to trailing edge
The quality of rudder face is minimum, completely in the adjustable extent of counterweight, and will not be to trailing edge rudder face
Tremor has a negative impact；There is the dual-use function of protection and stop, when the state of protection, can
To prevent the dangerous vibration of the excessive amplitude of trailing edge rudder face, when arrested state, can stop at once
The vibration of dynamic trailing edge rudder face；Mechanism freely can be cut between protection state and arrested state
Change, such that it is able to the chatter phenomenon of trailing edge rudder face to be carried out the observation of careful repetition.
Described flutter model trailing edge rudder face protection stop mechanism depends on aerofoil model completely no matter
It is single-blade surface model or full machine model all can be arranged according to this method, not by other structures such as single-blade
Face base or fuselage impact, have independence；And mechanism is small and exquisite, is positioned at model, does not produces
Extra aerodynamic force.
Accompanying drawing explanation
Fig. 1 is mechanism's position view on model；
Fig. 2 is that trailing edge rudder face protects stop mechanism schematic diagram；
Fig. 3 is gag lever post schematic diagram；
Fig. 4 is stopper slot schematic diagram；
Fig. 5 is the positioning seat schematic diagram of stopper slot；
Fig. 6 is pressurized strut schematic diagram；
Fig. 7 is the positioning seat schematic diagram of pressurized strut；
Fig. 8 is that stopper slot center line calculates signal with rotating shaft distance.
Detailed description of the invention
Embodiment 1
Described flutter model trailing edge rudder face protection stop mechanism constitutes as follows: gag lever post 4, spacing
Groove 5, stopper slot positioning seat 6, pressurized strut 7 and pressurized strut positioning seat 8；Described gag lever post 4
One end be fixed on the trailing edge rudder face of flutter model, stopper slot positioning seat 6 and pressurized strut location
Seat 8 is positioned on the main plane connecting trailing edge rudder face, described pressurized strut 7 and pressurized strut positioning seat 8
Being fixedly linked, pressurized strut positioning seat 8 purpose is to be fixed on main plane pressurized strut 7, because of
This, on the one hand pressurized strut positioning seat 8 to be ensured is fixed on main plane 2, on the other hand to protect
Card pressurized strut positioning seat 8 is by good for pressurized strut 7 fixed clamp.Stopper slot 5 one end is fixed with stopper slot
Position seat 6 slides and is connected, and one end of described pressurized strut 7 is connected with the other end of stopper slot 5, institute
State stopper slot 5 to be enclosed within outside gag lever post 4 other end.
Described stopper slot 5 is internal is cavity structure, and stopper slot 5 is connected one end with pressurized strut 7
Cavity width less than the cavity width of stopper slot 5 other end.Gag lever post 4 is deep into stopper slot
5 central authorities, neither affect the vibration of rudder face under non-chatter state, again limit rudder face amplitude excessive
Dangerous vibration；When pressurized strut 7 is stretched out, stopper slot 5 is promoted to advance, when arriving certain displacement,
Snapping into stopper slot positioning seat 6, stopper slot 5 halts, and now gag lever post 4 is placed exactly in limit
The narrowest place of position groove 5, make gag lever post cannot free vibration, and then suppression gag lever post 4 place rudder
The vibration in face.
Described stopper slot 5 is connected one end with stopper slot positioning seat 6 and is provided with tongued structures 51,
Stopper slot 5 is connected by tongued structures with stopper slot positioning seat 6.Described tongued structures 51
Fit with stopper slot positioning seat 6 and do not affect the proper motion of stopper slot 5；When arrested state,
Stopper slot positions 6 and just blocks stopper slot 5, makes stopper slot 5 to continue to move to forward；
Tongued structures 51 and unusual light necessary with tongued structures 51 contact portion.
The axis of described pressurized strut 7 overlaps with the center line of tongued structures 51.Pressurized strut 7 and limit
Position groove 5 close fit, the shift length of pressurized strut 7 is slightly larger than the length of tongued structures 51；
When pressurized strut 7 bounces back, at stopper slot, 5 in protection state, when pressurized strut 7 is stretched out, stopper slot
5 are in arrested state.
Described gag lever post 4 is fixed on the main force support structure of trailing edge rudder face 1 of flutter model, and
And kinestate herein is consistent with the mass motion state of trailing edge rudder face 1.
Described gag lever post 4 gos deep into the oscillating region of main plane end can be pushed away according to the amplitude of rudder face
Calculate, choose the safe oscillating region of rudder face in test, extrapolate gag lever post and go deep into main plane
The oscillating region of 2 ends, adjusts the length of gag lever post 4 end, makes the oscillating region of end slightly
Aerofoil profile less than main plane 2 locality.The most neither affect the aerodynamic force of model, make again resistance away from
The longest, the oscillating region of gag lever post 4 end is big as far as possible, makes limit effect more preferable.
The plane at stopper slot place is vertical with the axis of gag lever post；Time static, the axis of gag lever post
Being positioned at the middle of stopper slot, stopper slot entangles the end of gag lever post completely；Stopper slot exists
Protection state, it may be assumed that time contactless with gag lever post, gag lever post end vibrates without danger at rudder
Shi Sizhou is the most contactless；Stopper slot is in arrested state, it may be assumed that the narrowest place of stopper slot clamps spacing
During bar, gag lever post 4 end is forced to vibrate.
Described flutter model trailing edge rudder face protection stop mechanism installation steps are as follows:
1. determine the position of gag lever post 4, gag lever post 4 median perpendicular in the rotating shaft of trailing edge rudder face 1,
Gag lever post 4 is between two junction points of trailing edge rudder face, and close to the position of main plane 2 root
Put；The most not only stopping effect is good, and big near the profile thickness of airfoil extension 120, it is simple to peace
Dress native system；
2. the shaft parallel of the position of stopper slot 5, stopper slot 5 center line and trailing edge rudder face 1 is determined,
And intersect with gag lever post 4 center line, specifically refer to Fig. 8, stopper slot center line and trailing edge rudder face 1
The distance of rotating shaft is: L2≤L1* (H21-H22)/H1, wherein: H1: trailing edge rudder face 1
Permission peak swing；L1: trailing edge rudder face 1 trailing edge and the distance of rotating shaft；H21: main plane
Profile thickness near the rotating shaft of 2；L2: stopper slot 5 center line and the distance of rotating shaft；H22:
Gag lever post 4 diameter and stopper slot about 5 thickness of two sides sum；As L2=L1* (H21-H22)
/ H1, such stopper slot is remote with rotating shaft distance, and moment is bigger, and effect is more preferable.Stopper slot big
Little should meet: the distance moved from protection state to arrested state should be less than the maximum of pressurized strut
Advance distance.
3. the position of stopper slot positioning seat 6 is determined: when stopper slot moves forward, block gag lever post completely,
When reaching arrested state, just contact with stopper slot positioning seat 6 and be caught by stop motion；
4. determining the position of pressurized strut 7, this position should meet: when push rod is packed up, and mechanism is in
Protection state, when push rod advances and do not arrives the limit, mechanism is in arrested state, simultaneously stopper slot
Limited groove positioning seat 6 blocks；
5. the position of pressurized strut positioning seat 8 is determined, as long as pressurized strut 7 can be fixed, start
Cylinder positioning seat 8 can freely arrange.
The installation of trailing edge rudder face protection stop mechanism focuses on coordination, according to aerofoil model trailing edge i.e. side
To the space of the position of main plane corresponding to rudder, determine the size of mechanism used, progressively determine machine
Relative position between structure.
Trailing edge rudder face is added by flutter model trailing edge rudder face of the present invention protection stop mechanism
Quality is minimum, and a whole set of flutter model trailing edge rudder face protection stop mechanism, after only gag lever post is positioned at
On edge rudder face, the light material such as aluminum or carbon fiber is used to make gag lever post to be additional to trailing edge
The quality of rudder face is minimum, completely in the adjustable extent of counterweight, and will not be to trailing edge rudder face
Tremor has a negative impact；There is the dual-use function of protection and stop, when the state of protection, can
To prevent the dangerous vibration of the excessive amplitude of trailing edge rudder face, when arrested state, can stop at once
The vibration of dynamic trailing edge rudder face；Mechanism freely can be cut between protection state and arrested state
Change, such that it is able to the chatter phenomenon of trailing edge rudder face to be carried out the observation of careful repetition.
Described flutter model trailing edge rudder face protection stop mechanism depends on aerofoil model completely no matter
It is single-blade surface model or full machine model all can be arranged according to this method, not by other structures such as single-blade
Face base or fuselage impact, have independence；And mechanism is small and exquisite, is positioned at model, does not produces
Extra aerodynamic force.
Claims (1)
1. a flutter model trailing edge rudder face protection stop mechanism, described flutter model trailing edge rudder face
Protection stop mechanism constitute as follows: gag lever post (4), stopper slot (5), stopper slot positioning seat (6),
Pressurized strut (7) and pressurized strut positioning seat (8)；One end of described gag lever post (4) is fixed on and is quivered
Shake on the trailing edge rudder face (1) of model, stopper slot positioning seat (6) and pressurized strut positioning seat (8)
It is positioned on the main plane (2) connecting trailing edge rudder face (1), described pressurized strut (7) and start
Cylinder positioning seat (8) is fixedly linked, and stopper slot (5) one end is sliding with stopper slot positioning seat (6)
Dynamic connected, one end of described pressurized strut (7) is connected with the other end of stopper slot (5), described
Stopper slot (5) is enclosed within outside gag lever post (4) other end；Described stopper slot (5) is internal is
Cavity structure, and stopper slot (5) is connected the cavity width of one end less than limit with pressurized strut (7)
The cavity width of position groove (5) other end；Described stopper slot (5) and stopper slot positioning seat (6)
Connect one end and be provided with tongued structures (51), stopper slot (5) and stopper slot positioning seat (6)
It is slidably connected mutually by tongued structures；The axis of described pressurized strut (7) and tongued structures (51)
Center line overlap；It is characterized in that: described flutter model trailing edge rudder face protection stop mechanism peace
Dress step is as follows:
1. determining the position of gag lever post (4), gag lever post (4) median perpendicular is in trailing edge rudder face (1)
Rotating shaft, gag lever post (4) is positioned between two junction points of trailing edge rudder face (1)；
2. the position of stopper slot (5), stopper slot (5) center line and trailing edge rudder face (1) are determined
Shaft parallel, and intersect with gag lever post (4) center line, stopper slot center line and trailing edge rudder face (1)
The distance of rotating shaft is: L2≤L1* (H21-H22)/H1, wherein: H1: trailing edge rudder face (1)
Permission peak swing；L1: trailing edge rudder face (1) trailing edge and the distance of rotating shaft；H21: main
Profile thickness near the rotating shaft of aerofoil (2)；L2: stopper slot (5) center line and rotating shaft away from
From；H22: gag lever post (4) diameter and stopper slot (5) thickness of two sides sum up and down；
3. the position of stopper slot positioning seat (6) is determined: when stopper slot moves forward, block limit completely
Position bar, when reaching arrested state, just contacts with stopper slot positioning seat (6) and is caught by
Stop motion；
4. determining the position of pressurized strut (7), this position should meet: when push rod is packed up, mechanism
Being in protection state, when push rod advances and do not arrives the limit, mechanism is in arrested state, same to time limit
Position groove limited groove positioning seat (6) is blocked；
5. the position of pressurized strut positioning seat (8) is determined, as long as pressurized strut (7) can be fixed,
Pressurized strut positioning seat (8) can freely arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155025.9A CN103994873B (en) | 2014-04-17 | 2014-04-17 | A kind of flutter model trailing edge rudder face protection stop mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155025.9A CN103994873B (en) | 2014-04-17 | 2014-04-17 | A kind of flutter model trailing edge rudder face protection stop mechanism |
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| CN103994873A CN103994873A (en) | 2014-08-20 |
| CN103994873B true CN103994873B (en) | 2016-08-24 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571815A (en) * | 2014-10-11 | 2016-05-11 | 中国航空工业集团公司西安飞机设计研究所 | Emergency protecting device for rudder face |
| CN105115693A (en) * | 2015-09-24 | 2015-12-02 | 江西洪都航空工业集团有限责任公司 | Model protective mechanism applied to a buzz wind tunnel test |
| CN106768831A (en) * | 2016-11-30 | 2017-05-31 | 江西洪都航空工业集团有限责任公司 | A kind of dummy vehicle rudder face connection combination apparatus |
| CN112611537B (en) * | 2020-11-24 | 2022-05-06 | 中国航空工业集团公司沈阳飞机设计研究所 | Resistance rudder low-speed flutter wind tunnel model with flutter suppression device |
| CN112304557A (en) * | 2020-11-25 | 2021-02-02 | 大连理工大学 | Supersonic wind tunnel flutter test device and test method |
| CN114001905B (en) * | 2021-11-02 | 2023-06-16 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for obtaining aerodynamic force and moment of full rudder and trailing edge rudder with hypersonic aircraft rudder shaft distance approaching |
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| CN102235937A (en) * | 2010-05-06 | 2011-11-09 | 中国商用飞机有限责任公司 | Airplane model flutter suppression device |
| CN102928190A (en) * | 2012-09-18 | 2013-02-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Limiting locking device |
| CN203894027U (en) * | 2014-04-17 | 2014-10-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Protective stop mechanism for trailing edge control surface of flutter model |
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| JP2807784B2 (en) * | 1996-04-01 | 1998-10-08 | 科学技術庁航空宇宙技術研究所長 | Wing flutter stop device in wind tunnel test |
| JP3772212B2 (en) * | 2002-09-20 | 2006-05-10 | 独立行政法人 宇宙航空研究開発機構 | Transonic flutter stop device |
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| CN102235937A (en) * | 2010-05-06 | 2011-11-09 | 中国商用飞机有限责任公司 | Airplane model flutter suppression device |
| CN102928190A (en) * | 2012-09-18 | 2013-02-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Limiting locking device |
| CN203894027U (en) * | 2014-04-17 | 2014-10-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Protective stop mechanism for trailing edge control surface of flutter model |
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| CN103994873A (en) | 2014-08-20 |
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