Double-cone fairing shape line optimization design method based on von Karman shape line
An optimized design and fairing technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve the problems of poor aerodynamic characteristics, complex structure, and poor manufacturability of biconical lines, and achieve superior aerodynamic characteristics, The processing technology is simple and the effect of making up for the poor aerodynamic characteristics
Active Publication Date: 2021-06-25
东方空间技术(山东)有限公司
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Among them, the Von Karman profile has excellent aerodynamic characteristics, large space size and low internal noise, but has complex structure, poor manufacturability and high cost
[0004]The processing technology of the double-cone profile is simple, but the aerodynamic characteristics are slightly inferior, and the determination of a specific double-cone shape parameter with relatively good aerodynamic characteristics needs to rely on experience and a large number of Fluid simulation calculation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] Such as figure 1 As shown, the present embodiment 1 provides a method for optimal design of double-cone fairing shape lines based on von Karman shape lines, and the specific method steps are as follows:
[0038] S1 constructs the segmental equation of the fairing line based on the pre-defined characteristic parameters of the double cone fairing;
[0039] S2 Determine the deviation value between the two profile lines based on the segmental equation of the fairing profile line and the von Karman profile line equation established according to the known structural parameters of the double cone fairing;
[0040] S3 takes the minimization of the profile deviation as the optimization goal, and calculates the parameter values of the profile of the double-cone fairing;
[0041] S4 draws a biconical fairing profile line based on the parameter values.
[0042] The double cone fairing in step S1 is made up of cone top and double cone section;
[0043] The characteristic parame...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a Von Karman profile-based biconical fairing profile optimization design method. The method comprises the following steps: constructing a fairing profile partwise equation based on predefined biconical fairing characteristic parameters; Based on the fairing molded line segmentation equation and a von Karman molded line equation established according to known structural parameters of the biconical fairing, determining a deviation value between the two molded lines; Calculating parameter values of the molded line of the double-cone fairing by taking the minimization of the molded line deviation as an optimization target; And drawing the molded line of the double-cone fairing based on the parameter values. The double-cone type line optimized through the appearance design scheme of the double-cone fairing is most attached to the Von Karman type line, the cost is reduced, and meanwhile the advantages of being simple in machining process and excellent in aerodynamic characteristic are achieved.
Description
technical field [0001] The invention relates to an optimization design method, in particular to a method for optimal design of a double-cone fairing shape line based on a von Karman shape line. Background technique [0002] The current shape of the head of the launch vehicle fairing mainly includes conical, circular arc, parabolic, exponential, von Karman and biconical. [0003] Among them, the von Karman profile has excellent aerodynamic characteristics, large space size, and low internal noise, but has a complex structure, poor manufacturability, and high cost. [0004] The processing technology of the biconical profile is simple, but the aerodynamic characteristics are slightly inferior, and the determination of a specific biconical shape parameter with relatively good aerodynamic characteristics needs to rely on experience and a large number of fluid simulation calculations. Contents of the invention [0005] In order to solve the above-mentioned problems in the prior...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06F30/15G06F30/27
CPCG06F30/15G06F30/27Y02T90/00
Inventor 侯世远布向伟宋文锋张弛赵伟伟谷泽林魏凯吴昊王永刚
Owner 东方空间技术(山东)有限公司