Design of Meteorological Element Detection Platform for Atmospheric Boundary Layer Based on UAV

Zhang, Yonghong; Dong, Tiantian; Liu, Yunping

doi:10.1155/2017/1831676

Cited by 14 publications

(3 citation statements)

References 12 publications

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“…The coating of optical windows and mirrors, which protects against atmospheric deterioration and improves light transmission, is one of the MgF2 layer's main uses in the aircraft [11]. To increase the performance and longevity of delicate components like sensors and instruments, the MgF2 layer is also utilized as a protective coating (figure 2) [12]. The term "immersion time" describes how long a material or component is exposed to a certain chemical or treatment solution.…”

Section: Figure 1: Acid Pickling For Cleaning Metal Surfacesmentioning

confidence: 99%

Surface Treatment in Aerospace Industry: A Study on Acid Pickling and Paint Adhesion

2023

IJOMAM

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This paper provides an overview of the essential elements in the design and production of aviation components, namely surface treatment, acid pickling, paint adhesion, and Failure Modes and Effects Analysis (FMEA). These factors are critical in ensuring the dependability and safety of aircraft components. Surface treatment is necessary to ensure that paint and coatings adhere to the substrate, while acid pickling is used to treat surfaces and remove impurities, increasing surface roughness. The paper discusses the factors that affect paint adhesion and the procedures used to assess it. FMEA is a systematic approach used in the aerospace industry to identify potential failure modes and evaluate their severity, probability, detectability, and countermeasures. The authors highlight the importance of each of these criteria and emphasize that significant attention must be given to ensure the reliability and safety of aviation components. Careful regulation of acid application is necessary to prevent surface deterioration. Proper preparation of the surface, coating technique, and application circumstances significantly influence paint adhesion. In summary, the aircraft industry places significant emphasis on dependability and quality, and these essential elements must be considered in the design and production of aviation components.

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Section: Figure 1: Acid Pickling For Cleaning Metal Surfacesmentioning

confidence: 99%

Surface Treatment in Aerospace Industry: A Study on Acid Pickling and Paint Adhesion

2023

IJOMAM

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“…(2) Sounding balloons and meteorological aircraft are often used for high-altitude (1-10 km) wind measurement [5]. These types of equipment use GPS or attitude sensors to establish a link between the wind and the flight state and to invert the wind speed and direction [6][7][8][9][10][11]. They are usually not very accurate and have an uncontrollable wind path [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Wind Pressure Orthogonal Decomposition Anemometer: A Wind Measurement Device for Multi-Rotor UAVs

Hou

Xing

et al. 2023

Drones

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Wind speed and direction are critical meteorological elements. Multi-rotor unmanned aerial vehicles UAVs are widely used as a premium payload platform in meteorological monitoring. The meteorological UAV is able to improve the spatial and temporal resolution of the elements collected. However, during wind measurement missions, the installed anemometers are susceptible to interference caused by rotor turbulence. This paper puts forward a wind pressure orthogonal decomposition (WPOD) strategy to overcome this limitation in three ways: the location of the sensors, a new wind measurement method, and supporting equipment. A weak turbulence zone (WTZ) is found around the airframe, where the turbulence strength decays rapidly and is more suitable for installing wind measurement sensors. For the sensors to match the spatial structure of this area, a WPOD wind measurement method is proposed. An anemometer based on this principle was mounted on a quadrotor UAV to build a wind measurement system. Compared with a standard anemometer, this system has satisfactory performance. Analysis of the resulting data indicates that the error of the system is ±0.3 m/s and ±2° under hovering conditions and ±0.7 m/s and ±5° under moving conditions. In summary, WPOD points to a new orientation for wind measurement under a small spatial–temporal scale.

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“…Te operating area of the quadrotor is primarily located in the near-ground space with complex terrain and frequent airfows, particularly in the felds of emergency response, atmospheric exploration, and cargo transportation, making the motion stability of the entire quadrotor system particularly important [1][2][3][4]. In general, quadrotors are required to perform tasks such as hanging or releasing payloads, and changes in structural parameters can alter the dynamic characteristics and motion stability of the entire quadrotor system, leading to dynamic instability problems such as pendulum oscillation, decreased accuracy, and uncontrolled crashes [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Study of Load Stability of Quadrotor Based on Lyapunov Exponents

Dong

Zhang

Liu

et al. 2023

International Journal of Antennas and Propagation

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This paper addresses the issue of dynamic instability in quadrotor caused by changes in load mass during flight. To tackle this problem, the Lyapunov exponent method is adopted to study the dynamics and motion stability of the system. This approach resolves the challenge of constructing system eigenvalues due to the nonlinearity and high order of the quadrotor. To enhance the reliability of stability analysis, a quantitative relationship between system dynamics parameters and motion stability is established by combining the dynamic model with the Lyapunov exponent method. This approach compensates for inaccuracies in theoretical modeling analysis caused by factors such as load mass changes. The experiments demonstrate that changing the wheelbase and load mass improves flight motion stability, ensuring the reliability of the quadrotor flight system. Overall, this paper provides an in-depth analysis of the motion stability of a quadrotor and proposes a reliable method for stability analysis that accounts for changes in load mass during flight.

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Design of Meteorological Element Detection Platform for Atmospheric Boundary Layer Based on UAV

Cited by 14 publications

References 12 publications

Surface Treatment in Aerospace Industry: A Study on Acid Pickling and Paint Adhesion

Surface Treatment in Aerospace Industry: A Study on Acid Pickling and Paint Adhesion

Wind Pressure Orthogonal Decomposition Anemometer: A Wind Measurement Device for Multi-Rotor UAVs

Quantitative Study of Load Stability of Quadrotor Based on Lyapunov Exponents

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