Method for improving pitching characteristic of camber-free double-vertical-fin layout
A double vertical tail, layout technology, applied in aircraft parts, aircraft control, transportation and packaging, etc., to achieve the effect of improving the ability to control the nose down and head up at high angles of attack
Active Publication Date: 2021-10-29
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005]
The purpose of this application is to provide a method for improving the pitching characteristics of the non-camber double vertical tail layout, so as to solve at least one problem existing in the prior art
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
[0031] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...
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 belongs to the field of aerodynamic layout design of aircrafts, and particularly relates to a method for improving pitching characteristic of a camber-free double-vertical-fin layout. The pitching characteristic of the camber-free double-vertical-fin layout can be improved by controlling the deflection of a horizontal tail and a vertical fin (1) or the deflection of the horizontal tail and a rudder (2). According to the method for improving the pitching characteristic of the camber-free double-vertical-fin layout, the head lowering control capability of an aircraft with the camber-free double-vertical-fin layout at a large angle of attack can be improved, and the method is also suitable for improving the head lowering control capability of the aircraft with the camber-free double-vertical-fin layout at a small and medium angle of attack. According to the method, on the premise that the aerodynamic layout of the aircraft is not modified, the high-attack-angle head lowering and head raising control capacity of the double-vertical-fin layout without the camber angle can be effectively improved, and the method is suitable for improved design of the model of the aircraft adopting the double-vertical-fin layout without the camber angle and meanwhile suitable for aerodynamic layout scheme design of a novel aircraft.
Description
technical field [0001] The application belongs to the field of aircraft aerodynamic layout design, and in particular relates to a method for improving the pitching characteristics of the non-camber double vertical tail layout. Background technique [0002] Modern fighter jets require maneuverability at high angles of attack. In order to ensure the flight safety of the aircraft, it is required that when the control surface of the aircraft performs nose-down control, the aircraft has sufficient nose-down pitching moment in the entire range of the angle of attack. For example, the nose-down moment value is required to be no less than 0.05. If the pitch moment of the aircraft is insufficient, the aircraft will easily lose control and enter the state of high angle of attack, and cannot return to the state of low angle of attack in time, which will bring huge risks to the safe flight of the aircraft. figure 1 It is the pitching moment aerodynamic characteristic curve of a typical...
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 Applications(China)
IPC IPC(8): B64C5/06B64C5/10
CPCB64C5/06B64C5/10Y02T90/00
Inventor 刘波周继良王宏王孜孜郭灿生
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA