Fluid-structural design analysis for composite aircraft wings with various fiber properties

Date, Shugo; Abe, Yoshiaki; Yamamoto, Takeki; Okabe, Tomonaga

doi:10.1299/jfst.2021jfst0009

Cited by 6 publications

(1 citation statement)

References 17 publications

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“…Since the error components follow a Gaussian distribution, the final error after allocation is determined to be 0.1342° based on the 3σ error principle. To ensure stable operation and precise pointing of the device in high-altitude environments, it needs to have excellent thermal conductivity, vibration resistance, and wind resistance capabilities [24,25]. The outer casing material is made of carbon fiber, as shown in Figure 1; key components of the frame and beacon pointing units are made of titanium alloy; fused quartz is used for the reflectors; and the infrared tracking unit is made of aluminum alloy.…”

Section: Device Error Sources Analysismentioning

confidence: 99%

Pointing accuracy of airborne multi-light source steering device

Zhang,

Hou

et al. 2024

IEICE Electron. Express

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To validate the performance of the optical system of the tested equipment, the airborne multi-light source steering device needs to track the mounted equipment on other aircraft during flight tests and provide it with five beacon lights with a maximum span of more than 2 meters and parallelism less than 0.3°. The design, calibration, and flight environment of the airborne multi-light source steering device can affect its pointing accuracy. To address this issue, this paper studies the pointing accuracy of the device, separates its errors, and proposes a method based on the combination of multi-body system theory and finite element simulation. By establishing a mathematical model of pointing errors and relying on finite element simulation to simulate real-world working conditions, the dynamic pointing error patterns are analyzed. Finally, the method is validated through experiments. In the ground dynamic tests, the device's pointing accuracy is 0.2099°, and during the flight tests, the pointing accuracy is 0.231° with an accuracy rate of 90.86%. This proves that the proposed method is highly reliable and accurate.

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Section: Device Error Sources Analysismentioning

confidence: 99%