Prediction method of aircraft aerodynamic performance impact
An aerodynamic performance and aircraft technology, applied in aerodynamic tests, machine/structural component testing, instruments, etc., can solve the problem of inability to simulate ballistic state, inability to obtain the influence of air inlet aerodynamic performance, inability to accurately predict aircraft aerodynamic performance, etc. problem, to achieve the effect of improving the accuracy
Active Publication Date: 2021-10-19
BEIJING AEROSPACE TECH INST
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, if the critical point of the state change of the inlet cannot be accurately predicted, the aerodynamic performance of the aircraft cannot be accurately predicted.
However, the methods in the prior art are still unable to simulate the ballistic state in flight, resulting in the inability to obtain the influence of different states of the inlet port on the aerodynamic performance
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 Construction
[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
[0030] It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the steps related to the present invention are omitted. Invent other details that don't really matter.
[0031] figure 1 It is a flow chart of a method for predicting the influence of aircraft aerodynamic performance provided by the embodiment of the prese...
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 relates to the technical field of aircraft aerodynamic performance, and discloses a method for predicting the influence of aircraft aerodynamic performance. The method includes: determining an initial aircraft test model that meets the requirements of the wind tunnel test; obtaining the basic aerodynamic data of the model through the wind tunnel test; using a numerical calculation method to predict the Mach number range where the inlet state changes; Within the range of the inlet throat module, obtain the inlet state of the aircraft test model at different Mach numbers; obtain the aircraft aerodynamic data corresponding to the inlet state at each Mach number; based on each The aerodynamic data of the aircraft corresponding to the state of the air inlet at the Mach number and the basic aerodynamic data at the same Mach number determine the amount of influence on the aerodynamic performance of the aircraft. Therefore, the key problem that the current existing methods cannot obtain the influence of different states of the inlet on the aerodynamic performance due to the inability to fully simulate the ballistic state in flight is solved.
Description
technical field [0001] The invention relates to the technical field of aircraft aerodynamic performance, in particular to a method for predicting the influence of aircraft aerodynamic performance. Background technique [0002] For air-breathing aircraft, the main function of the intake is to capture incoming air and compress it to provide compressed air to other components of the engine, such as the combustion chamber. It is generally believed that if the flow capture characteristics of the inlet are not affected by the change of its internal flow state, the inlet is said to be in the activated state, otherwise it is in the inactive state. [0003] In the climbing section of the aircraft, as the Mach number of the incoming flow gradually increases, the inlet will experience a change process from the non-starting state to the starting state. This process is called the self-starting of the inlet. During the cruising period of the aircraft, when the intake port is started, une...
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 Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/08
CPCG01M9/08
Inventor 许灵芝汤继斌戴梧叶
Owner BEIJING AEROSPACE TECH INST