Gust Alleviation for General Aviation Aircraft

Kimberlin, Ralph D.; Sims, J. Paul

doi:10.4271/965508

Cited by 1 publication

(2 citation statements)

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“…The development of aerodynamic derivatives of wind shear proved that the integration of the wind gradients improved the accuracy as well [12]. As a result, the linear wind field approximation, in which the wind components on a specific location of the aircraft is affected by the wind gradients, leads to a better accuracy of aircraft response [10].…”

Section: Introductionmentioning

confidence: 99%

“…The size of the civil aviation aircraft is comparable to the characteristic size of the small-scale turbulence (on the order of 10 s of meters) [9]; thus, the wind gradients along the fuselage and wing cause different wind components on different locations of the aircraft. In fact, both the turbulence theory and flight tests confirmed that the effects of wind gradients on aircraft response cannot be neglected [10]. A theoretical turbulence model not only describes the turbulence components in three directions, but also involves the wind gradients, including q W = ∂W z /∂x, p W = −∂W z /∂y and r W = −∂W y /∂x [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Optimization of Aircraft Acceleration Response and EDR Estimation Based on Linear Turbulence Field Approximation

Wang

Gao

et al. 2021

Atmosphere

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The estimation of aircraft vertical acceleration response to atmospheric turbulence is fundamental to acceleration-based eddy dissipation rate (EDR) estimation. The linear turbulence field approximation with the wind gradients effects is utilized to describe the turbulence effects on civil aviation aircraft. To consider the wind gradients effects, the aircraft was modeled by a cruciform assembly in this study. A vertical acceleration estimation based on the unsteady vortex lattice method (UVLM) was proposed, in which the air-compression effects in high-subsonic flight were compensated by the Karman–Tsien rule. Results indicate that compared with the wing-tail assembly, the cruciform assembly with the wind gradients effects has better accuracy in computing acceleration response. The vertical acceleration response only induced by turbulence can be obtained for acceleration-based EDR estimation. Furthermore, with the optimized acceleration response, the estimated EDR value has got better accuracy and stability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%