International Journal of Astronautics and Aeronautical Engineering

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

Research Article  |   Volume 3, Issue 1 DOI: 10.35840/2631-5009/7515

Numerical Study of Virus Droplet Transport in Civil Aircraft Cabin

Shengcheng JI, Jinglei XU, Shanggui CAI and Zhongmin HU
Abstract

This paper presents the numerical investigations of droplet transport in a civil aircraft cabin generated by an index patient. The transport of the expiratory droplets exhaled from the index patient was investigated using the multiphase fluid dynamic methods. The numerical model was validated with the experimental results.

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Research Article  |   Volume 3, Issue 1 DOI: 10.35840/2631-5009/7514

Heat Transfer Characteristics of Al2O3-Kerosene and Fe3O4-Kerosene Nanofluids Flowing in a Minitube at Supercritical Pressures

Dan Huang, Xiao-yu Wu and Wei Li
Abstract

Regenerative cooling system is thought to be an effective and practical solution to better thermal management for high heat flux applications. In this paper, the potential of nanofluids as regenerative coolants at supercritical pressures was evaluated. Two-step method was applied to prepare Al2O3-kerosene and Fe3O4-kerosene nanofluids. Then experiments were carried out to study the heat transfer characteristics of nanofluids flowing in a vertical minitube at supercritical pressures. Parametric effects of mass flow rate, heat flux, pressure and particle content on the heat transfer performance are presented. Results show that increasing the flow rate or the working pressure could enhance the heat transfer performances, yet higher heat flux leads to poorer heat transfer performances.

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Research Article  |   Volume 3, Issue 1 DOI: 10.35840/2631-5009/7513

Feed-Forward Control for Retrieval Mode of Space Tethered Systems

AE Zakrzhevskii
Abstract

The object of this research is a space tether of two bodies connected by a flexible massless cable. The research objective is extension of developed by the author a novel approach to the building of the feed-forward control for the deployment mode of space tethers to the mode of their retrieval. It allows developing the feed-forward control of the tether length or tether tension that provides desired change of the angular momentum of the tether under the effect of the gravitational torque to the value, which corresponds to the magnitude of the tether angular momentum in the terminal state. The given example of application of the approach to the mode of tether retrieval demonstrates the simplicity of use of the method in practice.

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Volume 3 Issue 1

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