Special Pressure Testing Machine for Aircraft Landing GearMicrocomputer-Controlled Special Testing Machine for Aircraft Landing Gear

Static Pressure Test for Various Types of Aircraft Landing GearsPressure Testing Machine for Aircraft Landing Gear Shock Absorbers

I. Equipment Introduction

The aircraft landing gear pressure testing machine is a device used to test the performance of aircraft landing gears under pressure. It is primarily used for testing the mechanical properties of landing gears and their components, such as pressure, compression deformation, compression stiffness, load capacity, compression failure, compression displacement, and static stiffness.

Applicable Standards:

GJB1772 "General Specifications for Aircraft Hydraulic Systems and Accessories Test Benches"

HB-7666 "Performance Test Verification Requirements for Landing Gear Systems"

Working Principle:

The working principle of the aircraft landing gear pressure testing machine typically involves a hydraulic or electro-hydraulic servo system. The testing machine applies pressure to the landing gear through a hydraulic cylinder or electro-hydraulic servo system, simulating the actual working conditions during aircraft takeoff, landing, and ground taxiing. Meanwhile, the built-in pressure sensors and force sensors measure the pressure and force generated by the hydraulic system during the test and record relevant data for subsequent analysis and evaluation.

II. Main Unit Features

1. The aircraft landing gear pressure testing machine consists of a servo control system composed of a wide-speed-range electro-hydraulic servo valve, a computer, and measurement and control units, enabling precise control and measurement throughout the entire testing process.

2. The aircraft landing gear compression stiffness testing machine automatically collects, processes, and displays test data, automatically draws test curves, and edits test reports. It features high control accuracy, high measurement precision, and a wide range of applications.

3. The aircraft landing gear static stiffness tester consists of a main unit, a servo hydraulic source, and a computer measurement and control system. It is characterized by high precision, high reliability, high speed, and accuracy, with no range switching throughout the process. It enables three closed-loop control modes: fixed displacement, fixed deformation, and fixed load.

III. Main Technical Parameters

Test Load: 300KN, 500KN

Test Range: 2%~100% Full Scale

Force Accuracy: ±1%

Displacement Stroke: 500mm

Displacement Accuracy: ±0.05mm

Displacement Resolution: 0.01mm

Pressure Control Accuracy: ±0.5% FS

Pressure Measurement Accuracy: ±1% FS

Loading Speed Range: 0.01-50mm/min

Loading Speed Accuracy: Within ±5% of the Set Value

Measurement and Control System Parameters

Data Acquisition Frequency: ≤10Hz

Control Channels: 2-4 Channels