CN202485893U - Transonic flutter wind tunnel test model surface modeling maintaining device - Google Patents
Transonic flutter wind tunnel test model surface modeling maintaining device Download PDFInfo
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- CN202485893U CN202485893U CN 201120536505 CN201120536505U CN202485893U CN 202485893 U CN202485893 U CN 202485893U CN 201120536505 CN201120536505 CN 201120536505 CN 201120536505 U CN201120536505 U CN 201120536505U CN 202485893 U CN202485893 U CN 202485893U
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- wind tunnel
- maintaining device
- tunnel test
- transonic flutter
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Abstract
The utility model provides a transonic flutter wind tunnel test model surface modeling maintaining device which is characterized in that a main frame of a model 1 is composed of a metal beam frame 2. The inside of the metal beam frame 2 is filled with polyurethane foam 3, and a surfacing mat 4 is evenly pasted on the surface of the model 1. The surface of the modeling maintaining device is no longer coated with paint, but the foam surface of the surface of the modeling maintaining device is pasted with the surfacing mat through resin, therefore strength and surface smoothness of the model are improved, and the problem that the surface of the model is easy to damage in the process of a transonic flutter wind tunnel test is resolved.
Description
Technical field
The utility model relates to the model aircraft design field, relates in particular to the dimension type on model aircraft surface in the transonic flutter wind tunnel test in the model aircraft design process.
Background technology
In the last few years, in model aircraft transonic flutter wind tunnel test, adopting the metal roof beam structure was the modelling method of main load-carrying member; Using more forming technique is to adopt the metal roof beam structure to carry out the isocyanurate foam foaming, then foam surface is carried out local tweezers finishing, carries out mopping again and handles; The shortcoming of this dimension type method is that the intensity on dimension type surface is bad, and the additional stiffness of dimension type part often can't be estimated, causes the inherent characteristic of model to change; And model surface is damaged easily in the middle of the transonic wind tunnel model test, and test is interrupted; Incur loss through delay the test progress, caused heavy losses.
Summary of the invention
The purpose of the utility model: a kind of transonic flutter model in wind tunnel surface dimension type device is provided; The processing of no longer painting of said dimension type apparatus surface; But adopt resin adhesive surface felt in foam surface; Improve the strength level and the surface smoothness of model aircraft, solved the damaged easily problem of model surface in the middle of the transonic wind tunnel model test.
The technical scheme of the utility model: a kind of transonic flutter model in wind tunnel surface dimension type device is provided; It is characterized in that: the main frame of model aircraft 1 is made up of metal roof beam structure 2; Metal roof beam structure 2 inner filled polyurethane foams 3, surperficial felt 4 is pasted on model aircraft 1 surface uniformly.
The beneficial effect of the utility model: surperficial felt 4 covering profile forming qualities are good, guaranteed carrying out smoothly of wind tunnel test, reduced empirical risk; Draw materials conveniently, processing technology is simple, has improved working (machining) efficiency, has reduced the mould processing cost, has shortened the model manufacturing cycle, has accelerated the modelling process.
Description of drawings
Fig. 1 is the dimension type structural representation of model surface in the utility model aircraft transonic flutter wind tunnel test.
Embodiment
Below through concrete embodiment and combine accompanying drawing that the utility model is described in further detail.
The type dimension type of the described aircraft mould of the utility model is to be based upon on the basis of former shaping, at first, and after the metal roof beam structure 2 of model carries out the isocyanurate foam foaming; Because impossible deaeration fully in the matched moulds process causes foam 3 surfaces to have pit in various degree to follow rough surface, to this situation; Need carry out tweezers and repair polishing work, after the finishing, the model surface quality is better; Profile at this moment, is pasted on the model aircraft surface with epoxy resin with surperficial felt 4 uniformly along sliding; After stickup finishes, model is retightened matched moulds in the middle of mould, keep environment temperature carrying out pressure forming more than 10 ℃; Can molding more than at least 24 hours behind the matched moulds, the model aircraft surface smoothness that obtain this moment be very good.
Surperficial felt 4 in the utility model preferred embodiment is a kind of short fiber material; The elastic modulus of material is very little; Be shaped for model, additional stiffness is less, and this kind additional stiffness is more stable; Controllability is good, calculates with the test of actual ground inherent characteristic for model theory all to be of practical significance; It is all very convenient to be that surperficial felt material or resin material are drawn materials, and is easy on the market purchase, and this provides convenience for processing of model.
The described model surface dimension of the utility model type device is mainly used in the middle of the design of transonic flutter wind tunnel model; Because last step of model dimension type is former pressure forming, so all can adopt this kind to replace the dimension type device that japanning is handled with surperficial felt for any model that can satisfy the former molding condition.
The preferred embodiment that the above is merely the utility model is not in order to limit the application range of the utility model; All other do not break away from the equivalence of being accomplished under the essence that the utility model discloses and change or modify, and all should be included in following claims scope.
Claims (1)
1. transonic flutter model in wind tunnel surface dimension type device; The main frame of model (1) is made up of metal roof beam structure (2); The inner filled polyurethane foam of metal roof beam structure (2) (3) is characterized in that: surperficial felt (4) is pasted on model (1) surface uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536505 CN202485893U (en) | 2011-12-20 | 2011-12-20 | Transonic flutter wind tunnel test model surface modeling maintaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536505 CN202485893U (en) | 2011-12-20 | 2011-12-20 | Transonic flutter wind tunnel test model surface modeling maintaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485893U true CN202485893U (en) | 2012-10-10 |
Family
ID=46960308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120536505 Expired - Lifetime CN202485893U (en) | 2011-12-20 | 2011-12-20 | Transonic flutter wind tunnel test model surface modeling maintaining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485893U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571816A (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 | Combined flutter model with adjustable gap |
| CN108195543A (en) * | 2017-11-29 | 2018-06-22 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aircraft wind tunnel model flutter blowing test system |
-
2011
- 2011-12-20 CN CN 201120536505 patent/CN202485893U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571816A (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 | Combined flutter model with adjustable gap |
| CN105571816B (en) * | 2014-10-11 | 2018-01-16 | 中国航空工业集团公司西安飞机设计研究所 | A kind of combined type flutter model of adjustable clearance |
| CN108195543A (en) * | 2017-11-29 | 2018-06-22 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aircraft wind tunnel model flutter blowing test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |