Hatch cover test device

Abstract

The invention discloses a hatch cover test device, which comprises a bearing module for simulating a cockpit and a docking module, wherein the docking module is arranged on the bearing module and is used for simulating real installation of a hatch cover test piece; the docking module comprises a docking box and baffle plates; the docking box is composed of two longitudinal opening box beams and two transverse opening box beams; the baffle plates which coincide with two ends of the hatch cover test piece in shape are obliquely arranged at the upper parts of two ends of the docking box towards the outer ends separately; a locking groove is reserved in one side of the upper part of the docking box; the bearing module comprises a bearing groove box, an air-tight belt inflation and deflation tap and cockpit inflation and deflation taps; the bearing groove box is composed of two longitudinal beams, two transverse beams and a bottom plate; and the air-tight belt inflation and deflation tap and the cockpit inflation and deflation taps are arranged at the outer side of the bearing groove box and are connected with pressurizing equipment through pipelines separately. The hatch cover test device can simulate the real installation condition of a hatch cover and can meet the functions, such as installing, sealing and loading of the hatch cover, the test preparation period is shortened and the test cost is reduced.

Description

technical field [0001] The invention relates to the field of aircraft structure strength tests, in particular to a hatch cover test device. Background technique [0002] The hatch cover is one of the key components of the aircraft. It is composed of a metal frame and a transparent part made of plexiglass. The hatch cover has a complex shape and weak rigidity. The hatch cover is installed on the aircraft cockpit, and the airtight system located in the hatch cover frame makes the hatch cover and the aircraft cockpit form a closed area, which needs to be pressurized during the flight of the aircraft, and the load-carrying conditions of the hatch cover are various. It mainly bears three types of loads, namely: aerodynamic load, cockpit pressurization load and airtight hose load. In order to provide a reliable test basis for subsequent structural improvement, modification and verification of structural strength calculation theory, the hatch cover is often Pre-testing, especially...

AI Technical Summary

Problems solved by technology

[0002] The hatch cover is one of the key components of the aircraft. It is composed of a metal frame and transparent parts made of plexiglass. The hatch cover has a complex shape and weak rigidity.

The hatch cover is installed on the aircraft cockpit, and the airtight system located in the hatch cover frame makes the hatch cover and the aircraft cockpit form a closed area, which needs to be pressurized during the flight of the aircraft, and the load-carrying conditions of the hatch cover are various. It mainly bears three types of loads, namely: aerodynamic load, cockpit pressurization load and airtight hose load. In order to provide a reliable test basis for subsequent structural improvement, modification and verification of structural strength calculation theory, the hatch cover is often Pre-testing, especially for pre-developed aircraft, requires technical investigation of the newly developed hatch cover. At this time, the aircraft cockpit is usually not yet manufactured, and the test waiting period is long. In addition, the hatch cover is designed to match the aerodynamic shape, shape and structure of the aircraft. They are all very complicated and very large in size, generally 2-3 meters long, which makes the device used for the hatch cover experiment larger in size and complex in shape. Moreover, the hatch cover test device must also meet the airtightness and strength requirements of the experiment. All of the above design constraints should be taken into account when designing the hatch cover experimental setup

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