CN103592099B - Measuring method for the measurement apparatus of wind-tunnel free roll oscillation test - Google Patents
Measuring method for the measurement apparatus of wind-tunnel free roll oscillation test Download PDFInfo
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- CN103592099B CN103592099B CN201310617353.1A CN201310617353A CN103592099B CN 103592099 B CN103592099 B CN 103592099B CN 201310617353 A CN201310617353 A CN 201310617353A CN 103592099 B CN103592099 B CN 103592099B
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Abstract
Measurement apparatus and measuring method thereof for the test of wind-tunnel free roll oscillation.Until aircraft awing experienced by airfoil stalls phenomenon, wing problem of falling off just causes enough attention, needs this problem research experiment before generation.The inventive method includes: rotary shaft (1), described rotary shaft is arranged on support bar (2) and above and is supported by two deep groove ball bearings (3), one end of described rotary shaft connects balance pole (4), described balance pole connects five COMPONENT BALANCE (5), the afterbody of described rotary shaft installs gag lever post (6) and electromagnetic clutch movable end (7), and described rotary shaft tail end connects encoder support (9) by angular encoder (8)；Described support bar afterbody installs the fixing end (10) of electromagnetic clutch, and described support bar tail end installs jointing (11), and described jointing is arranged on test chamber support.The present invention tests for the free roll oscillation of wind-tunnel.
Description
Technical field:
The present invention relates to a kind of measurement apparatus for the test of wind-tunnel free roll oscillation and measuring method thereof.
Background technology: transonic aircraft unexpected wing stall problem found at U.S.'s major part aircraft.The unexpected machine of aircraft
It is inconsistent that wing stall is exactly left and right wing stall condition, and left and right airfoil lift is different, creates rolling moment, unexpected wing stall
Can result in horizontal non-charge to move: heavy wing, airfoil stalls, wing rock.But until aircraft awing experienced by wing
Whereabouts phenomenon, wing problem of falling off just causes enough attention, and the U.S. has set up special group specially and carried out this problem greatly
Quantity research, the Main Means of research is wind tunnel test, first passes through the movement area of wind tunnel test prediction aircraft generation airfoil stalls
Territory, is predicted test, finds out the model configuration insensitive to airfoil stalls different model configuration.But wind tunnel test also needs
The motion of transonic aircraft Cross deformation studied, to solve this problem in the airplane design stage, it is to avoid in Live Flying
Bring harm.
Summary of the invention:
It is an object of the invention to provide a kind of measurement apparatus for the test of wind-tunnel free roll oscillation and measuring method thereof.
Above-mentioned purpose is realized by following technical scheme:
A kind of measurement apparatus for the test of wind-tunnel free roll oscillation, its composition includes: rotary shaft, described rotary shaft
Being arranged on support bar and supported by two deep groove ball bearings, one end of described rotary shaft connects balance pole, described sky
Flat pole connects five COMPONENT BALANCE, and the afterbody of described rotary shaft installs gag lever post and electromagnetic clutch movable end, described rotation
Rotating shaft tail end connects encoder support by angular encoder；Described support bar afterbody installs the fixing end of electromagnetic clutch, institute
The support bar tail end stated installs jointing, and described jointing is arranged on test chamber support.
The described measurement apparatus for the test of wind-tunnel free roll oscillation, described rotary shaft is by described in Flange joint
Balance pole.
The described measurement apparatus for the test of wind-tunnel free roll oscillation, described support bar afterbody is installed by flange
On described jointing.
The described measurement apparatus for the test of wind-tunnel free roll oscillation, described electromagnetic clutch movable end and rotation
Axle afterbody is by bonded.
The measuring method of a kind of measurement apparatus for the test of wind-tunnel free roll oscillation, first, assembles and adjusts measurement
Device: two deep groove ball bearings on support bar support rotary shaft at the free vibration of rolling direction, electromagnetic clutch movable end
Fix after end is separately mounted to rotary shaft and support bar afterbody with electromagnetic clutch, adjust described electromagnetic clutch immediately movable
End and electromagnetic clutch fix gap between end to 0.5mm, and now described electromagnetic clutch movable end, electromagnetic clutch are solid
Fixed end, rotary shaft, support bar form entirety and are installed on jointing by flange；Meanwhile, described in balance pole is connected to
Rotary shaft, and the other end of described balance pole is connected to five COMPONENT BALANCE, then by five described COMPONENT BALANCE front ends even
Connect model aircraft；
Second, electromagnetic clutch is not powered on, and rotary shaft can rotate freely, and the clutch described in when clutch is energized is lived
Moved end and electromagnetic clutch fixing end adhesive, rotary shaft is lockable, it is impossible to realize rotating；Carry out wind tunnel test, before blowing, electricity
Magnet clutch is in "on" position, and rotary shaft is lockable, Flow Field in Wind Tunnel stably after, electromagnetic clutch power-off, rotary shaft is in
Free state, and when obtaining model aircraft free state at different conditions by camera head and described angular encoder
Vibration Condition；
3rd, by the electric bridge of the foil gauge composition that the measuring cell of five described COMPONENT BALANCE is pasted at diverse location,
Carry out aerodynamic load suffered during the vibration of survey aircraft model；And by the angular encoder of described rotary shaft tail end installation
, if there is the situation that electromagnetic clutch is out of control, institute during experiment in vibration amplitude during survey aircraft model free rolling wind tunnel experiment
The gag lever post that the rotary shaft afterbody stated is installed can limit its peak swing, and model aircraft is protected by gag lever post, prevents mould
Type rotates continuously and damages.
The measuring method of the described measurement apparatus for the test of wind-tunnel free roll oscillation, five described COMPONENT BALANCE are
One piece of high strength steel overall processing forms.
Beneficial effect:
1. the present invention utilizes electromagnetic clutch movable end, electromagnetic clutch to fix end, rotary shaft, support bar form entirety,
And two deep groove ball bearings on support bar support rotary shaft in the free vibration of rolling direction, this free roll oscillation is measured
Equipments overall structure is rationally distributed, easy for installation, can be accurately finished the pneumatic spy during test of model aircraft free roll oscillation
The measurement of property.
Present invention employs electromagnetic clutch and control the braking of rotary shaft, and electromagnetic clutch movable end and electromagnetic clutch
After fixing end is separately mounted to rotary shaft and support bar afterbody, whole device is made to have design science, rational in infrastructure, original
Advantage, meanwhile, whole test structure is compact, and the gap that electromagnetic clutch movable end and electromagnetic clutch are fixed between end is accurate
To 0.5mm, have that volume is little, low-power consumption, with low cost, stable performance, the reliable advantage of obtained experimental result, ambient adaptability
With practical, there is preferable development prospect.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the mounting structure schematic diagram that end fixed by the electromagnetic clutch movable end of the present invention and electromagnetic clutch.
Accompanying drawing 3 is the structural representation of gag lever post mechanical position limitation.
In figure, 1 it is rotary shaft, 2 is support bar, 3 is deep groove ball bearing, 4 is balance pole, 5 is five component skies
Flat, 6 be gag lever post, 7 be electromagnetic clutch movable end, 8 be angular encoder, 9 be encoder support, 10 be electromagnetism from
The fixing end of clutch, 11 for installing jointing.
Detailed description of the invention:
Embodiment 1:
A kind of measurement apparatus for the test of wind-tunnel free roll oscillation, its composition includes: rotary shaft 1, described rotation
Axle is arranged on support bar 2 and is supported by two deep groove ball bearings 3, and one end of described rotary shaft connects balance pole 4, institute
The balance pole stated connects five COMPONENT BALANCE 5, and the afterbody of described rotary shaft installs gag lever post 6 and electromagnetic clutch movable end
7, described rotary shaft tail end connects encoder support 9 by angular encoder 8；Described support bar afterbody install electromagnetism from
Clutch fixes end 10, and described support bar tail end installs jointing 11, and described jointing is arranged on test chamber and props up
On frame.
Embodiment 2:
The measurement apparatus for the test of wind-tunnel free roll oscillation described in embodiment 1, described rotary shaft passes through flange
Balance pole described in connection.
Embodiment 3:
The measurement apparatus for the test of wind-tunnel free roll oscillation described in embodiment 1 or 2, described support bar afterbody
It is arranged on described jointing by flange.
Embodiment 4:
The measurement apparatus for the test of wind-tunnel free roll oscillation described in embodiment 1 or 2, described electromagnetic clutch
Movable end and rotary shaft afterbody are by bonded.
Embodiment 5:
The measuring method of a kind of measurement apparatus for the test of wind-tunnel free roll oscillation, first, assembles and adjusts measurement
Device: two deep groove ball bearings on support bar support rotary shaft at the free vibration of rolling direction, electromagnetic clutch movable end
Fix after end is separately mounted to rotary shaft and support bar afterbody with electromagnetic clutch, adjust described electromagnetic clutch immediately movable
End and electromagnetic clutch fix gap between end to 0.5mm, and now described electromagnetic clutch movable end, electromagnetic clutch are solid
Fixed end, rotary shaft, support bar form entirety and are installed on jointing by flange；Meanwhile, described in balance pole is connected to
Rotary shaft, and the other end of described balance pole is connected to five COMPONENT BALANCE, then by five described COMPONENT BALANCE front ends even
Connect model aircraft；
Second, electromagnetic clutch is not powered on, and rotary shaft can rotate freely, and the clutch described in when clutch is energized is lived
Moved end and electromagnetic clutch fixing end adhesive, rotary shaft is lockable, it is impossible to realize rotating；Carry out wind tunnel test, before blowing, electricity
Magnet clutch is in "on" position, and rotary shaft is lockable, Flow Field in Wind Tunnel stably after, electromagnetic clutch power-off, rotary shaft is in
Free state, and when obtaining model aircraft free state at different conditions by camera head and described angular encoder
Vibration Condition；
3rd, by the electric bridge of the foil gauge composition that the measuring cell of five described COMPONENT BALANCE is pasted at diverse location,
Carry out aerodynamic load suffered during the vibration of survey aircraft model；And by the angular encoder of described rotary shaft tail end installation
, if there is the situation that electromagnetic clutch is out of control, institute during experiment in vibration amplitude during survey aircraft model free rolling wind tunnel experiment
The gag lever post that the rotary shaft afterbody stated is installed can limit its peak swing, and model aircraft is protected by gag lever post, prevents mould
Type rotates continuously and damages.
Embodiment 6:
The measuring method of the measurement apparatus for the test of wind-tunnel free roll oscillation described in embodiment 5, described five points
Amount balance is that one piece of high strength steel overall processing forms.
Claims (1)
1. a measuring method for the measurement apparatus tested for the free roll oscillation of wind-tunnel, described measurement apparatus includes rotating
Axle, described rotary shaft is arranged on support bar and is supported by two deep groove ball bearings, and one end of described rotary shaft connects balance and props up
Bar, described balance pole connects five COMPONENT BALANCE, and the afterbody of described rotary shaft installs gag lever post and electromagnetic clutch movable end, institute
State rotary shaft tail end and connect encoder support by angular encoder；Described support bar afterbody installs the fixing end of electromagnetic clutch,
Described support bar tail end installs jointing, and described jointing is arranged on test chamber support, and described rotary shaft is passed through
Balance pole described in Flange joint, described support bar afterbody is arranged on described jointing by flange, described electromagnetic clutch
Device movable end and rotary shaft afterbody are by bonded, and described five COMPONENT BALANCE are formed by one piece of high strength steel overall processing；Its
Being characterised by, described measuring method comprises the steps of
Step one, assembles and adjusts described measurement apparatus: two deep groove ball bearings on support bar support rotary shaft in rolling
Direction free vibration, electromagnetic clutch movable end and electromagnetic clutch are fixed end and are separately mounted to rotary shaft and support bar afterbody
After, adjust described electromagnetic clutch movable end immediately and gap that electromagnetic clutch is fixed between end is to 0.5mm, the most described electricity
End fixed by magnet clutch movable end, electromagnetic clutch, rotary shaft, support bar form entirety and is installed on connection by flange connects
Head；Meanwhile, balance pole is connected to described rotary shaft, and the other end of described balance pole is connected to five COMPONENT BALANCE, then
Described five COMPONENT BALANCE front ends are connected model aircraft；
Step 2, electromagnetic clutch is not powered on, and rotary shaft can rotate freely, the described clutch movable end when clutch is energized
With electromagnetic clutch fixing end adhesive, rotary shaft is lockable, it is impossible to realize rotating；Carry out wind tunnel test, before blowing, electromagnetism from
Clutch is in "on" position, and rotary shaft is lockable, Flow Field in Wind Tunnel stably after, electromagnetic clutch power-off, rotary shaft is in freedom
State, and obtain vibration feelings during model aircraft free state at different conditions by camera head and described angular encoder
Condition；
Step 3, by the electric bridge of the foil gauge composition that the measuring cell of described five COMPONENT BALANCE is pasted at diverse location, surveys
Aerodynamic load suffered during amount model aircraft vibration；And flown by the angular encoder measurement of described rotary shaft tail end installation
, if there is the situation that electromagnetic clutch is out of control, described rotation during experiment in vibration amplitude during machine model free rolling wind tunnel experiment
The gag lever post that axle afterbody is installed can limit its peak swing, and model aircraft is protected by gag lever post, prevents model from revolving continuously
Then damage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310617353.1A CN103592099B (en) | 2013-11-28 | 2013-11-28 | Measuring method for the measurement apparatus of wind-tunnel free roll oscillation test |
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| CN201310617353.1A CN103592099B (en) | 2013-11-28 | 2013-11-28 | Measuring method for the measurement apparatus of wind-tunnel free roll oscillation test |
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| CN103592099A CN103592099A (en) | 2014-02-19 |
| CN103592099B true CN103592099B (en) | 2016-09-14 |
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