CN109632253A - A kind of model equipment for body of revolution jet flow dynamometer check - Google Patents
A kind of model equipment for body of revolution jet flow dynamometer check Download PDFInfo
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- CN109632253A CN109632253A CN201811504362.9A CN201811504362A CN109632253A CN 109632253 A CN109632253 A CN 109632253A CN 201811504362 A CN201811504362 A CN 201811504362A CN 109632253 A CN109632253 A CN 109632253A
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- model
- leading portion
- outer diameter
- back segment
- sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a kind of model equipments for body of revolution jet flow dynamometer check, including model leading portion, model back segment and sleeve, model leading portion is bullet shape, the linkage section that there is diameter to be less than bomb body outer diameter for its bomb body rear end, reservoir inner cavity is offered inside from the end face of rear end to bullet, the accent of reservoir inner cavity is provided with the internal screw thread for connecting pressure duct, on the bomb body upper side wall close to linkage section, offers the jet pipe penetrated through to the Laval nozzle shape of reservoir inner cavity；Model back segment is being capable of cutting ferrule and the straight-tube shape cylinder that is fixed on model leading portion linkage section, barrel bore is identical as the outer diameter of model leading portion linkage section, cylinder back segment outer diameter is identical as bomb body outer diameter, the outer diameter of its front section for being fastened in model leading portion linkage section is less than the outer diameter of bomb body, offers on leading portion cylindrical wall multiple for fixing the mounting hole of test equipment；On the whole, the outer diameter of sleeve and the outer diameter of bomb body are identical for cylindrical section leading portion after sleeve cooperation is socketed in model.
Description
Technical field
The invention belongs to experimental provision technical fields, are related to a kind of model structure of modelling for jet test,
In particular to a kind of model equipment for body of revolution jet flow dynamometer check.
Background technique
Aircraft athletic posture or track can be changed in the reaction force (RCS) that lateral jet generates, and its role is to supplement
Pneumatic rudder effectiveness deficiency and quick change of flight state, are applied on a variety of aircraft at home and abroad: such as PAC-
3, THAAD, Aster, HTV-2, recoverable capsule and the high maneuvering-vehicle of China's various new, RCS control technology have become above
The indispensable key technology of aircraft.However, jet flow and outer flow field make aircraft surface and spatial flow that significant changes occur,
Generate additional aerodynamic force and torque, Control System Design need to obtain accurate surface load characteristic and aerodynamic characteristic, and wind-tunnel
Test and numerical prediction are to provide the important means of result above, and wind tunnel test is also verifying numerical simulation precision and guidance
The important channel of its improvement direction.
There is complicated wave system and vortex structures in Flow Field With Jet Flows, under certain conditions (such as rail control jet flow) interference flowing field
Variation with inlet flow conditions and Model Condition is particularly sensitive.When jet flow model designs, in order to realize the structures such as jet pipe, reservoir, need
Model is subjected to segmentation connection, model will also be with day flushconnection when dynamometer check.Connection between each section of model, model and day
Flat connection, usually using pin positioning or screw fastening.This makes the aperture of model surface excessive, model surface with it is original
There are larger differences for digital-to-analogue, directly affect the precision of test result.Therefore, it in the modelling of jet test, needs
Guarantee that model surface is smooth as far as possible, to reduce this influence.
Have not yet to see the model of the body of revolution jet flow dynamometer check for reducing model surface aperture influence.
Summary of the invention
It is an object of the invention to solve the model surface aperture of existing body of revolution jet flow dynamometer check to influence jet flow stream
The problem of field, and the advantages of will be described later, is provided.
In consideration of it, the present invention provides a kind of model equipment for body of revolution jet flow dynamometer check, model back segment and day
Realize positioning and radial fastening by two pins and two screws after flushconnection, then model back segment covers upper bush, then with mould
The connection of type leading portion.By model leading portion, model back segment, sleeve the pin hole alignment positioned at spout opposite side after, using pin by three
It is fixed.Achieve the purpose that reducing model surface aperture influences jet flow by this means.
For this purpose, the model equipment for the dynamometer check of body of revolution jet flow of the invention include: model leading portion, model back segment and
Sleeve, the model leading portion are bullet shape, the linkage section that there is diameter to be less than bomb body outer diameter for bomb body rear end, from rear end
To reservoir inner cavity is offered inside bullet, the accent of reservoir inner cavity is provided with the interior spiral shell for connecting pressure duct for the end face in portion
Line offers the jet pipe penetrated through to the Laval nozzle shape of receptacle inner cavity on the bomb body upper side wall close to linkage section,
The model back segment be can cutting ferrule and the straight-tube shape cylinder that is fixed on the linkage section, the internal diameter of the cylinder and the company
The outer diameter for connecing section is identical, and the cylinder back segment outer diameter and bomb body are outer through identical, is fastened in the front section of the linkage section
Outer diameter is less than the outer diameter of bomb body, offers on leading portion cylindrical wall multiple for fixing the mounting hole of test equipment, the sleeve
Cooperation is socketed in cylinder leading portion on the whole, and the outer diameter of the sleeve and the outer diameter of bomb body are identical, in the downside of bomb body, pass through fixation
Pin fixes model leading portion, model back segment and the sleeve connection of cutting ferrule together.
It is preferred for the pin hole to mate with each other on the model leading portion being connected and fixed, model back segment and sleeve and is located at jet pipe pair
The position of side.
It is preferred that there are two pin hole and two stepped holes for the part of the model back segment and test day flushconnection, four holes are in
" ten " word arrangement, and a pin hole is opposite with another pin hole, a stepped hole is opposite with another stepped hole.
It is preferred that identical as original number die topography after the model leading portion, the model back segment and sleeve assembling cooperation.
It is preferred that the model leading portion is connected and fixed with the model back segment using positioning pin and screw.
It is preferred that offering the pin hole and threaded hole for installing fixed test balance on the leading portion of the model back segment.
The invention has the following advantages:
(1) present invention devises the model equipment for body of revolution jet flow dynamometer check, solves existing body of revolution jet flow
The model surface aperture of dynamometer check influences the problem of jet flow.
(2) adverse effect excessive present invention decreases the aperture of jet flow model surface makes model surface and original digital-to-analogue more
It is identical.
(3) structure of the invention is through multiplicating property verification experimental verification, it was demonstrated that its stable structure, reliable.
Detailed description of the invention
Fig. 1 is the present invention in one embodiment for the assembly signal of the model equipment of body of revolution jet flow dynamometer check
Figure.
Fig. 2 (1) (2) (3) is each exploded sketch.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Requirement based on jet test, model of the special design and fabrication of the present invention for body of revolution jet flow dynamometer check
Device.As shown in Figure 1, a kind of model equipment for body of revolution jet flow dynamometer check provided by the invention, comprising:
Model leading portion 1, there is pin hole, for fixing with model back segment and sleeve connection；With
Model back segment 2, there is pin hole and screw thread, for being connected and fixed with model leading portion, sleeve and force balance；With
Sleeve 3, there is pin hole, for being connected and fixed with model leading portion and model back segment.
It is of the invention in one embodiment, preferably, this be used for body of revolution jet flow dynamometer check model dress
It sets, further includes:
Model leading portion 1 has jet pipe and reservoir structure；It has one section of linkage section, and linkage section is located near jet pipe, for
The connection of model back segment；Itself and model back segment and the fixed pin hole of sleeve connection are located at jet pipe opposite side, and with model back segment and sleeve
Absolute position it is identical；Its with after model back segment and sleeve connection, outside cooperation between model leading portion and sleeve and original digital-to-analogue
Shape is identical.
It is of the invention in one embodiment, preferably, as shown in Fig. 2, this be used for body of revolution jet flow dynamometry examination
The model equipment tested, further includes:
Model back segment 2, there is three sections of linkage sections, one section for connect with model leading portion, one section be used for day flushconnection, separately
One section is used for and sleeve connection；Its part with day flushconnection is in " ten " word cloth there are two pin hole and two stepped holes, four holes
It sets, and a pin hole is opposite with another pin hole, a stepped hole is opposite with another stepped hole；It is fixed with model leading portion and sleeve connection
Pin hole be located at jet pipe opposite side, and it is identical as the absolute position of model leading portion and sleeve；Its with after model leading portion and sleeve connection,
Cooperation between model back segment and sleeve is identical as original number die topography.
It is of the invention in one embodiment, preferably, this be used for body of revolution jet flow dynamometer check model dress
It sets, further includes:
Sleeve 3 is located at jet pipe opposite side with the pin hole that model leading portion and model back segment are connected and fixed, and with model leading portion and
The absolute position of model back segment is identical；It connect with model back segment, after connection with the cooperation of model leading portion and model back segment and former
Beginning digital-to-analogue shape is identical.
In one embodiment of the invention, a kind of model equipment for body of revolution jet flow dynamometer check is comprising before model
Section 1, model back segment 2 and sleeve 3, technical solution include:
(1) it designs.The model equipment for body of revolution jet flow dynamometer check, including structure are provided for jet flow model design
Design and connection design.
(2) it installs.Model back segment is connected using pin with screw with balance, and model leading portion, model back segment and sleeve use
Pin connection, can reduce the influence to model surface shape.
(3) it applies.The model equipment of jet flow dynamometer check is had developed using the structure, and is come in hypersonic wind tunnel completion
The blowing test under the conditions of Mach number 5 is flowed, shows that the structural stability and repeatability meet the requirements.
The present invention is not disclosed content and is known to the skilled person common sense.Although embodiment of the present invention disclose as
On, it is not limited to the applications listed in the specification and the embodiments, it can be applied to various be suitble to this hair completely
Bright field, for those skilled in the art, other modifications may be easily implemented, therefore without departing substantially from claim
And under universal defined by equivalency range, the present invention is not limited to specific details and legend shown and described herein.
Claims (6)
1. a kind of model equipment for body of revolution jet flow dynamometer check, which is characterized in that including model leading portion, model back segment and
Sleeve, the model leading portion are bullet shape, the linkage section that there is diameter to be less than bomb body outer diameter for bomb body rear end, from rear end
To reservoir inner cavity is offered inside bullet, the accent of reservoir inner cavity is provided with the interior spiral shell for connecting high-pressure gas circuit for the end face in portion
Line offers the jet pipe penetrated through to the Laval nozzle shape of receptacle inner cavity on the bomb body upper side wall close to linkage section,
The model back segment be can cutting ferrule and the straight-tube shape cylinder that is fixed on the linkage section, the internal diameter of the cylinder and the company
The outer diameter for connecing section is identical, and the cylinder back segment outer diameter is identical as bomb body outer diameter, is fastened in the front section of the linkage section
Outer diameter is less than the outer diameter of bomb body, offers on leading portion cylindrical wall multiple for fixing the mounting hole of test equipment, the sleeve
Cooperation is socketed in cylinder leading portion on the whole, and the outer diameter of the sleeve and the outer diameter of bomb body are identical, in the downside of bomb body, pass through fixation
Pin fixes model leading portion, model back segment and the sleeve connection of cutting ferrule together.
2. a kind of model equipment for body of revolution jet flow dynamometer check as described in claim 1, it is characterised in that: for connecting
Connect the position that the pin hole to mate with each other on fixed model leading portion, model back segment and sleeve is located at jet pipe opposite side.
3. a kind of model equipment for body of revolution jet flow dynamometer check as described in claim 1, it is characterised in that: the mould
There are two pin hole and two stepped holes, four holes to arrange in " ten " word for the part of type back segment and test day flushconnection, and a pin
Hole is opposite with another pin hole, a stepped hole is opposite with another stepped hole.
4. a kind of model equipment for body of revolution jet flow dynamometer check as described in claim 1, it is characterised in that: the mould
It is identical as original number die topography after type leading portion, the model back segment and sleeve assembling cooperation.
5. a kind of model equipment for body of revolution jet flow dynamometer check as described in claim 1, it is characterised in that: the mould
Type leading portion is connected and fixed with the model back segment using positioning pin and screw.
6. a kind of model equipment for body of revolution jet flow dynamometer check as described in claim 1, it is characterised in that: the mould
The pin hole and threaded hole for installing fixed test balance are offered on the leading portion of type back segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504362.9A CN109632253B (en) | 2018-12-10 | 2018-12-10 | Model device for rotary body jet flow force measurement test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504362.9A CN109632253B (en) | 2018-12-10 | 2018-12-10 | Model device for rotary body jet flow force measurement test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109632253A true CN109632253A (en) | 2019-04-16 |
| CN109632253B CN109632253B (en) | 2021-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811504362.9A Active CN109632253B (en) | 2018-12-10 | 2018-12-10 | Model device for rotary body jet flow force measurement test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358320A (en) * | 2021-08-10 | 2021-09-07 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for measuring force of interference of jet flow of upstream air for high-speed wind tunnel |
| CN114486166A (en) * | 2021-12-29 | 2022-05-13 | 中国航天空气动力技术研究院 | Model and system for control surface jet flow interference force measurement test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113358320A (en) * | 2021-08-10 | 2021-09-07 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for measuring force of interference of jet flow of upstream air for high-speed wind tunnel |
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