International Journal of Astronautics and Aeronautical Engineering

ISSN: 2631-5009   Impact Factor = 0.52*   DOI: 10.35840/2631-5009

Research Article  |   Volume 3, Issue 2 DOI: 10.35840/2631-5009/7520

Three-Dimensional Modelling and Simulation of the Ice Accretion Process on Aircraft Wings

S Chang, H Tang, H Wu, X Su, A Lewis and C Ji
Abstract

In this article, a new computational method for the three-dimensional (3D) ice accretion analysis on an aircraft wing is formulated and validated. The two-phase flow field is calculated based on Eulerian-Eulerian approach using standard k-ε dispersed turbulence model and second order upwind differencing with the aid of commercial software Fluent, and the corresponding local droplet collection efficiency, convective heat transfer coefficient, freezing fraction and surface temperature are obtained.

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Research Article  |   Volume 3, Issue 2 DOI: 10.35840/2631-5009/7519

The Aerodynamics of an Oblique Biplane Emirates Aviation University, Dubai, UAE

Young Hwan Kim, Asma Najib Abdullah, Awais Khan, Pritam Kumari Devrath, Reem Ahmed Al Ghumlasi and Yasir Nawaz
Abstract

The concept of oblique wings was suggested by R.T. Jones due to its simplified minimum drag solution in supersonic flow. So, what would be the potential advantage of the oblique Biplane. Oblique biplanes have raised bewilderment to whether their application is an advantage or not. The research investigates the aerodynamic modelling of an oblique biplane and analyses its aerodynamic characteristics. The oblique wing is believed to reduce the specific fuel consumption of the aircraft as the wing is adjusting the inclination relative to the free steam, as the aircraft velocity being increased.

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Review Article  |   Volume 3, Issue 2 DOI: 10.35840/2631-5009/7518

Feed-forward Control Based on a Neural Network Technology for an Optimal Slewing of the Flexible Spacecraft

A Zakrzhevskii
Abstract

The problem of construction of optimal program slewing of spacecraft with attached flexible elements in the class of slewing around Eulerian axis is considered. The mathematical model is developed, allowing considering a finite number of natural modes of flexible vibrations. The problem of optimal reorientation of spacecraft with nontraditional objective of control, reducing to a minimum dynamic overload of flexible elements in a relative motion is formulated.

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Research Article  |   Volume 3, Issue 2 DOI: 10.35840/2631-5009/7517

An Assessment of a Linear Aerodynamic Modeling of a Generic Flapping Wing Ornithopter

Harijono Djojodihardjo and Alif S. S. Ramli
Abstract

A comprehensive linearized aerodynamic approach is elaborated to summarize the author and coworkers effort to model flapping bi- and quad-wing ornithopter in producing lift and thrust for forward flight. The objective of the modeling is to assess the extent of linearized aerodynamic approach in mimicking mid-sized flapping Biosystems like bats and birds. Viscous effect and leading-edge suction is utilized in the basic Unsteady Aerodynamic Approach. Analysis is carried out by differentiating the pitching and flapping motion phase-lag and studying its respective contributions to the flight forces. Observation based heuristic modeling of Leading Edge Vortex is developed to study its influence on Lift and Thrust.

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Research Article  |   Volume 3, Issue 2 DOI: 10.35840/2631-5009/7516

Thermal and Mechanical Response of Inner Cone Sample of ZrB2-SiC Ceramic under Arc-Jet Conditions

Jun Wei, Lokeswarappa R Dharani and K Chandrashekhara
Abstract

Under arc-jet test conditions, ZrB2-SiC ceramic will undergo high temperature oxidation and develop an external glassy layer (SiO2), zirconia sub-layer (ZrO2) and SiC-depleted diboride layer (ZrB2). This study relates to finite element modeling of the effects of oxidation on heat transfer and mechanical behavior of ZrB2-SiC ceramic under arc-jet test conditions. A steady-state heat transfer FE method was employed to conduct the heat transfer analysis to obtain the temperature distribution in the inner body of the cone. The surface thermal conditions available in the literature were used in the heat transfer analysis.

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Volume 3 Issue 2

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