Method for testing service life of parachute recovery skid buffer small and medium-sized unmanned aerial vehicle body

A life testing and unmanned aerial vehicle technology, applied in the field of unmanned aerial vehicles, can solve problems such as the increase in the number of fatigue tests, a large amount of flight monitoring data, and large deviations in the life prediction and evaluation results of the unmanned aerial vehicle body structure

Pending Publication Date: 2021-09-14
XIAN AISHENG TECH GRP +1
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  • Description
  • Claims
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Problems solved by technology

The disadvantages of this method are as follows: first, a large amount of flight monitoring data is required; second, when there are many key components, the number of fatigue tests will in

Method used

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  • Method for testing service life of parachute recovery skid buffer small and medium-sized unmanned aerial vehicle body
  • Method for testing service life of parachute recovery skid buffer small and medium-sized unmanned aerial vehicle body
  • Method for testing service life of parachute recovery skid buffer small and medium-sized unmanned aerial vehicle body

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Example Embodiment

[0050] The following is exemplary, and is intended to be used to illustrate the invention without understanding the limitation of the invention.

[0051] During the development of drones, multiple frames must be performed, and the flight performance of drone is performed. Under normal circumstances, a certain number of trial drone flight test flying frame is much smaller than the life of the drone The quantity of the specified frame.

[0052] The small and medium-sized drone recovery phase of the umbrella recycling is the most severe, when the umbrella is recovered, the drone is 5m / s ~ 6m / s, after the slip buffer, landing impact maximum acceleration is about 200m / s 2 , The centroid overload is 20. The small and medium-sized drone recycling of the umbrella and recycled sand buffer plays a decisive role in the life of the drone body.

[0053] The present invention provides an umbrella recycling slip buffer medium and small drone body life test test method. This method uses fli...

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Abstract

The invention discloses a method for testing service life of a parachute recovery skid buffer small and medium-sized unmanned aerial vehicle body, and belongs to the field of unmanned aerial vehicles. The method comprises the following steps: firstly, calculating a landing simulation test quantity n2, a landing simulation test free falling body putting height H and various road surface landing simulation test quantities according to assessment unmanned aerial vehicle parameter information and a recovery landing road surface recovery quantity percentage; and then performing testing according to a normal test program. According to the method, a flight test and a landing simulation test are combined, a large amount of flight monitoring data is not needed, a fatigue test is not needed, only a small amount of landing simulation tests need to be carried out in combination with calculation according to the characteristics of parachute recovery skid buffering small and medium-sized unmanned aerial vehicles, and the method has the advantages of being simple in test, short in test period, small in risk and low in cost.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicles, and in particular relates to a method for testing the body life of small and medium-sized unmanned aerial vehicles by parachute recovery and skid buffering. Background technique [0002] The body life of small and medium-sized UAVs is generally specified by the number of flight sorties. In the process of UAV performance appraisal, the life of the UAV body can be assessed through flight tests, or the test analysis method can be used to predict and evaluate. Patent "A Method for Determining Life of UAV Airframe Structure Suitable for Low Cost", Publication No. CN104101548B [Chinese], the feature of this invention is: analyze the statistical data of UAV maintenance support, determine the structure of UAV body Key components; then determine the reference load spectrum of key parts through flight simulation and flight monitoring data, and determine the cumulative fatigue damage of key componen...

Claims

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Application Information

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IPC IPC(8): B64F5/60
CPCB64F5/60Y02T90/00
Inventor 庞俊锋石磊孟毛毛王丹段亮弟安彬李胜利
Owner XIAN AISHENG TECH GRP
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