A Floatability Test Model

A characteristic test and model technology, applied in the direction of aircraft component testing, etc., can solve the problems of excessive model weight, backward design technology, poor strength, etc., and achieve the effect of large internal space, reasonable weight distribution, and good strength

Active Publication Date: 2022-02-11
CHINA SPECIAL TYPE FLIER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems such as the backward design technology of the existing aircraft ditching flotation characteristic test model, the model weight is too heavy, and the strength is relatively poor, and a kind of flotation characteristic test model proposed

Method used

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Embodiment Construction

[0022] A classification principle of the present invention is as follows:

[0023] The model design adopts a modular design, which is different from the parting surface of the actual machine. Based on the principle of easy assembly, the model is divided on a plane parallel to the longitudinal section, and the model is divided into several large parts that are directly connected by connectors.

[0024] B model structure design of the present invention is as follows:

[0025] The present invention consists of a fuselage skin 1, a fuselage subdivision panel 2, a fuselage floor 3, a fuselage frame 4, a fuselage bearing beam 5, an air pipe 6, a wing skin 7, a wing frame 8, The wing stringer girder 9, the wing fuselage docking beam 10, the lifting adjustment system 11, the horizontal tail skin 12, the horizontal tail fuselage docking beam 13, the horizontal tail bulkhead 14, and the horizontal tail beam 15 are composed.

[0026] The fuselage subdivision plate 2 and the fuselage flo...

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Abstract

The invention belongs to the field of aircraft ditching test, and in particular relates to a floating characteristic test model. In the case of strict weight requirements, the general model has low strength and is easily damaged. The present invention proposes a floating characteristic test model, including a fuselage, wings and empennage, wherein the fuselage is divided into an upper fuselage compartment and a lower fuselage compartment by a fuselage floor, and a lifting device is installed above the middle of the upper fuselage compartment. Adjustment system, the lifting lugs can adjust the position front and rear in the waist hole of the lifting adjustment system; a vent pipe connecting the upper compartment and the lower compartment of the fuselage is arranged on the height of the fuselage floor; the lower compartment of the fuselage has There are seepage holes, and the bottom of the lower fuselage frame has overflow holes connecting adjacent compartments; black and white waterline scales are painted on the outside of the fuselage skin. It can meet the requirements of harsh test conditions.

Description

technical field [0001] The invention belongs to the field of aircraft ditching test, and in particular relates to a floating characteristic test model. Background technique [0002] At the present stage, when civilian fixed-wing aircraft obtain airworthiness certificates, it is necessary to carry out ditching test research. The ditching floating characteristic test studies the aircraft's floating stability, floating time and motion attitude on the water surface, and then analyzes the floating characteristics of the aircraft under different model states; at the same time, according to Reasonably possible structural damage and leakage, verify the flotation stability of the aircraft in each test condition, and determine the flotation characteristics of the aircraft such as the flotation attitude, draft over time, and flotation time. [0003] In the test of floating characteristics, the test speed of the test model converted according to the similarity criterion is all within ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 李徐焦俊江婷张科屈儒君李正
Owner CHINA SPECIAL TYPE FLIER RES INST
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