Gravity-center normal overload calculation method for ski-jump takeoff of aircraft

A technology of normal overload and calculation method, which is applied in calculation, computer-aided design, electrical digital data processing, etc., can solve problems such as inaccurate calculation results, and achieve a better matching effect

Inactive Publication Date: 2016-03-09
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for calculating the normal overload at the center of gravity of an aircraft ski jump to solve the problem of inaccurate calculation results of the existing calculation method for the normal overload at the center of gravity

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  • Gravity-center normal overload calculation method for ski-jump takeoff of aircraft
  • Gravity-center normal overload calculation method for ski-jump takeoff of aircraft
  • Gravity-center normal overload calculation method for ski-jump takeoff of aircraft

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[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. 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 invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The present invention relates to the field of aircraft structure strength design, and particularly relates to a gravity-center normal overload calculation method for ski-jump takeoff of an aircraft, so as to solve the problem of an inaccurate calculation result of the existing gravity-center normal overload calculation method. The gravity-center normal overload calculation method for ski-jump takeoff of an aircraft comprises the following steps: calculating the curvature radius of an oblique board of an aircraft carrier by using a predetermined formula; and according to formulas involving the gravitational acceleration, a takeoff roll speed of the aircraft, and a tangential angle of the oblique board of the aircraft carrier, calculating the gravity-center normal overload for ski-jump takeoff of the aircraft. According to the gravity-center normal overload calculation method for ski-jump takeoff of an aircraft, normal overload can be figured out more accurately, so that the calculation result matches the actual takeoff load better, thereby more truly reflecting a deck reaction force borne by a landing gear of the aircraft.

Description

technical field [0001] The invention relates to the field of aircraft structural strength design, in particular to a method for calculating the normal overload at the center of gravity of an aircraft ski-jump take-off. Background technique [0002] There are two types of take-off methods for aircraft carriers equipped with conventional fixed-wing carrier-based aircraft: steam catapult take-off and inclined board ski-jump take-off. The ski jump takeoff can shorten the takeoff run distance of the carrier-based aircraft and reduce the deck wind requirements, thereby realizing the short-distance takeoff operation. The normal overload at the center of gravity of the aircraft during ski jump takeoff is a key parameter in the calculation of the landing gear load, which determines the input of the aircraft structural strength design. [0003] At present, there is no clear calculation method for the normal overload at the center of gravity of the aircraft ski-jump takeoff in the air...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F2113/28
Inventor 姚念奎隋福成周栋卢学峰
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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