Method for measuring gravity center of aircraft pod

Abstract

The invention discloses a method for measuring the gravity center of an aircraft pod. The method comprises the following steps that 1, the weight of multiple parts outside the pod is set to zero, three suspending points A, B and C on different vertical planes on the pod are selected, and a space coordinate system of X, Y and Z is set; 2, a suspending device is adopted for suspending the three suspending points to a plane coordinate system of X, 0 and Y for weight measurement, and the coordinate of the gravity center of the pod in the current coordinate system is calculated; 3, the pod is overturned by 90 degrees along the axis, three suspending points A', B' and C' in a plane coordinate system of X, 0 and Z are reselected for weight measurement, and the coordinate of the gravity center ofthe pod in the current coordinate system is calculated; 4, data obtained through calculation in two times are summarized to obtain the coordinate value of the gravity center of the pod in the currentcoordinate system in three directions of X, Y and Z. The coordinate of the gravity center of the pod obtained by means of the method which is convenient in operation and simple in process has small manual calculation errors, and the test efficiency and the measurement accuracy are high.

Description

technical field [0001] The invention belongs to the technical field of aircraft weighing, and relates to a method for measuring the weight center of gravity of an aircraft pod. Background technique [0002] The measurement of aircraft weight and center of gravity is an important test before the first flight of the aircraft, and the accuracy of the measurement directly affects the flight safety of the aircraft. For the irregular rotary pod of aluminum alloy monocoque structure suspended on the aircraft, traditional measuring equipment cannot measure the center of gravity. With the development of aviation and national defense, the size of similar products to be tested is getting larger and larger. , and the shape is becoming more and more complicated. Obviously, it is inconvenient to use the two commonly used measurement methods for measuring the center of gravity of aircraft weight: the jack method and the wheel method. Contents of the invention [0003] The purpose of the...

AI Technical Summary

Problems solved by technology

For the irregular rotary pod of aluminum alloy monocoque structure suspended on the aircraft, traditional measuring equipment cannot measure the center of gravity. With the development of aviation and national defense, the size of similar products to be tested is getting larger and larger. , the shape is becoming more and more complicated. Obviously, it is inconvenient to use the two measurement methods commonly used to measure the center of gravity of the aircraft: the jack method and the wheel method.

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