Gust Influences on Aerospace
A special issue of Aerospace (ISSN 2226-4310).
Deadline for manuscript submissions: 30 June 2024 | Viewed by 4283
Special Issue Editors
Interests: fluid dynamics; atmosphere
Special Issue Information
Dear Colleagues,
An important prerequisite for the design, assessment and certification of aircraft and their associated control systems is the quantitative specification of the environment in which the aircraft is intended to operate, for example, atmospheric wind gust. Wind gust is a common atmospheric turbulence in nature; however, it has very complex physical characteristics, including its scale, velocity profile, and power spectral density. Thus, it can affect both the natural atmosphere and human activities through a variety of perspectives. This Special Issue aims to form a comprehensive collection of essays regarding wind gusts in aerospace, including but not limited to gust properties, gust research methods, atmospheric influences, aerodynamic and aeroelastic responses of aircraft and engine, aircraft design considerations, gust alleviation measures, etc. Submissions are encouraged from all researchers engaged in aircraft gust aerodynamics and aeroelastics.
Prof. Dr. Zhenlong Wu
Dr. Michael Hölling
Guest Editors
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
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Keywords
- gust
- aerodynamics
- aeroelastics
- aircraft
- structural dynamics
- fluid-structure coupling
- reduced-order modeling
- CFD
- wind-tunnel experiment
- gust alleviation
Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Investigation of Internal Flow Characteristics of Tiltrotor Aircraft Inlet in Gust Environment
Authors: Haicheng Zhu; Xiaoming He; Yue Zhang; Daishu Cheng; Ziyun Wang; YuFeng Huang; Huijun Tan
Affiliation: College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics
Abstract: In the vertical takeoff and landing (VTOL) state of tiltrotor aircraft, the inlet angle encounters the incoming airflow at 90 degrees, resulting in highly complex internal flow characteristics that are extremely susceptible to gusts. Meanwhile, the flow quality at the outlet of the inlet directly affects the performance of the aircraft's engine. This paper utilizes an unsteady numerical simulation method based on sliding meshes to investigate the internal flow characteristics of the inlet during the hover state of a typical tiltrotor aircraft and the effects of head-on gusts on the aerodynamic Characteristics of the inlet. The results show that during hover state, tiltrotor aircraft inlet exhibits three pairs of transverse vortices and one Streamwise Vortex at the aerodynamic interface plane (AIP). Among these, the transverse vortices generated due to the rotational motion of the gas have the largest scale and exert the strongest influence on the inlet's performance, characterized by pronounced unsteady features. Additionally, there are strong unsteady characteristics present within the inlet. Head-on gusts primarily affect the performance of the inlet by influencing the direction of the slipstream generated by the rotor, thereby influencing the mechanical energy and the non-distribution of the ingested gas within the inlet. The larger head-on gusts have a beneficial effects on the performance of the inlet. When the gust velocity reaches 12 m/s, there is a 1.01% increase in the total pressure recovery () of the inlet, a 25.72% decrease in the circumferential distortion index (DC60), and a reduction of 62.84% in the area where |α| exceeds 15°. Conversely, when the gust velocity of head-on gusts reaches 12 m/s in the opposite direction, the inlet's total pressure recovery decreases by 1.13%, the circumferential distortion index increases by 14.57%, and the area where |α| exceeds 15° increases by 69.59%, adversely affecting the performance of the inlet. Additionally, the presence of gusts alters the unsteady characteristics within the inlet.