Three-dimensional force measuring platform device

Abstract

The invention belongs to the field of aeronautic dynamic tests, and relates to a three-dimensional force measuring platform device which mainly comprises a friction tabletop, a mounting tabletop, three-dimensional force sensors, sensor mounting flanges, a mounting bottom plate, connecting auxiliary parts and the like. The device is used on equipment for drop tests and shimmy tests for aircraft landing gears, drop tests for integral aircrafts and aircraft frame section landing impact tests, ground load testing requirements in the tests are met by the three-dimensional force measuring platform device, test errors are smaller than or equal to 0.5%F.S, cross interference errors are smaller than or equal to +/-3.0%, the degree of nonlinearity is smaller than or equal to 1.0%F.S, the repeatability is smaller than or equal to 1.0%F.S, the zero drift is smaller than or equal to +/-1.0%F.S, and lags F<x>, F<y> and F<z> are smaller than or equal to +/-1.0%F.S. The three-dimensional force measuring platform device has the advantages that the sizes of the tabletops, the measurement ranges of the sensors and the quantity of the sensors can be computed and determined according to dimensions of required test pieces and a load range during actual design, for example, four sensor structures can be utilized if the sizes of the tabletops and a load are small.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes an improved testing system for airplanes or other vehicles used on flight deckings during take off tests (FOT). These systems measure forces from different directions - lift loads, rollers, carriages, etc., while they work well at very small scales. They provide accurate measurements over large areas without being affected by external factors such as weight distribution or changes in altitude. Overall, these improvements improve safety and reduce costs associated with FTO operations.

Problems solved by technology

Technics: Current devices only allow for testing on specific types of materials such as steel or aluminum without taking into account factors like weight distribution during flight. These current methods also lack precision because they use different measurements depending upon how much pressure was applied onto them compared with their own weights alone. Additionally, these systems require expensive instrumentation that can perform complex calculations over long periods of time.

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