Water takeoff performance calculation method for amphibious aircraft based on digital virtual flight

Wang, Lixin; Yin, Haipeng; Yang, Kun; Liu, Hailiang; Zhu, Jianghui

doi:10.1016/j.cja.2020.03.019

Cited by 12 publications

(7 citation statements)

References 12 publications

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“…Fluid mechanics is an independent branch of mechanics, is a study of fluid equilibrium and fluid mechanical motion laws and its practical application of technology science, in many industrial sectors have a widely apply in work, aviation industry in aircraft [1]. It can't be built without aerodynamics; Hydrodynamics is used in the shipbuilding sector, as are various specialties in civil engineering Add a close relationship [2].…”

Section: Introductionmentioning

confidence: 99%

Studying the Relationship Between Aircraft Stability and Shape Based on Hydrodynamics

Ding¹,

Lv²,

Wang³

2023

HSET

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In recent years, with the rapid development of industrial technology, the application of fluid mechanics in the industrial field has become more and more frequent and has been well developed. Of course, more and more scholars gradually pay attention to the development and application of fluid mechanics. As an important means of transportation in daily life, aircraft plays an important role in both civil and military affairs. The development of fluid mechanics has made an important contribution to solving the problems of aircraft design and stability. In this paper, the application and research status of hydrodynamics in aircraft design will be reviewed by means of literature analysis. At the same time, the application of hydrodynamics in aircraft design and life will be reviewed from many aspects, and the future development trend of hydrodynamics will be prospected. So far, there are many difficulties and hotspots in the development of fluid mechanics, and this paper will focus on these contents. I hope it can provide direction for its later development.

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Section: Introductionmentioning

confidence: 99%

Studying the Relationship Between Aircraft Stability and Shape Based on Hydrodynamics

Ding¹,

Lv²,

Wang³

2023

HSET

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“…Amphibious aircraft has been extensively employed in emergency rescue and land and water transportation due to its ability to take off and land on water 1,2 . The working environment on water is complex, especially in bad weather.…”

Section: Introductionmentioning

confidence: 99%

Dynamic features of non-return mechanism in hatch door of amphibious aircraft

Wang

Dou

Zhang

2022

Preprint

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Non-return mechanism is the key device that plays the role of braking in the opening and closing electric actuator of amphibious aircraft hatch door, in which there are two core components, namely ball-and-socket contact pair and multi-disc friction pair. The braking response characteristics of non-return mechanism directly determine the performance and operation safety of the hatch door. In this paper, the dynamic model of non-return mechanism is established considering the freedom of rotation-translation. Based on MATLAB/Simulink, the solution framework of the overall dynamic model is built. The dynamic response characteristics of non-return mechanism in the process of reverse load braking, forward load braking and continuous closing are analyzed. The braking time and the angular displacement of the output shaft in the braking phase have been presented. The simulation demonstrates that three pairs of friction pairs can realize effective braking under the given working conditions. Compared with the forward load braking, the reverse load braking has longer braking time and smaller angular displacement of the output shaft. This study provides a theoretical basis for the design and optimization of non-return mechanism.

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“…Empirical methods are more efficient for the preliminary design. Several attempts [5,6] have been made to estimate the resistance characteristics of seaplanes by adding aerodynamic models into Savitsky equations. Whereas, since the Savitsky methods were developed for the sample non-stepped planing hulls [7], the empirical methods lack accuracy for evaluating the hydrodynamics of unconventional hulls, especially for seaplane hulls characterized by a distinctive step at the bottom.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Take-Off Performance of a Seaplane in Calm Water

Guo

Yang

et al. 2021

Applied Sciences

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Nowadays, with the escalating tensions in maritime dispute and the development of marine economy, there has been renewed interest in seaplanes for their special capacity of taking off and landing on water. Prediction of take-off performance, involving aerodynamic analysis and hydrodynamic analysis, is a main challenge in seaplane design, while the prediction methods have been little improved since the 1960s. This paper aims to investigate the attitude and resistance characteristics of a seaplane at different speeds during the take-off by numerically modeling the air-water flow field using RANS equations with VOF method. The trim and heave motion of seaplane in response to aerodynamic forces, hydrodynamic forces, hydrostatic forces, and propeller thrust was realized by solving rigid body dynamics equations and adopting dynamic overset mesh technique. The variations in heave, trim angle, and resistance characteristics during the takeoff were investigated, and their inherent relationships with the aerodynamic, hydrodynamic, and hydrostatic performance were revealed. Particular investigation on the hydrodynamic resistance indicates that the stagnation line located at the convex bow would contribute a considerable increase of pressure resistance at the first hump, and the trim angel of a seaplane should be operated in an optimum trim range, typical between 4–6 deg, to minimize the hydrodynamic resistance at the second hump. Additionally, the dynamic motion convergence study proves that the utilization of damping terms was an effective way to accelerate the convergence of the dynamic motion ending with a quasi-static state.

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Water takeoff performance calculation method for amphibious aircraft based on digital virtual flight

Cited by 12 publications

References 12 publications

Studying the Relationship Between Aircraft Stability and Shape Based on Hydrodynamics

Studying the Relationship Between Aircraft Stability and Shape Based on Hydrodynamics

Dynamic features of non-return mechanism in hatch door of amphibious aircraft

Numerical Analysis of the Take-Off Performance of a Seaplane in Calm Water

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