All buoyant and hybrid buoyant aerial vehicles have directional stability issues at low speed. Electric trimmers are one of the potential solutions for controlling the yaw motion of such vehicles in which partial lift is obtained from the wings. However, available propeller disk area of such trimmers is limited due to small surface area of the vert

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Purpose – Realistic data bank of aerodynamic and stability derivatives is still missing for hybrid buoyant aerial vehicles. Such vehicles take-off and land similar to an aircraft with their partial weight balanced by the aerostatic lift. The purpose of this paper is to use wind tunnel testing for a better understanding of the aerodynamic and stat

High organic content in the untreated sago wastewater (SWW) can cause severe environmental pollution. The starch content in SWW can be utilized as a potential substrate for biohydrogen production. SWW taken from Johor contains 23700 mg/L COD and 0.146 g/l glucose. After acid pretreatment process using 1.5% (v/v) H2SO4 at 121oC for 60 minutes, the g

Hybrid buoyant aircraft are new to the arena of air travel. They have the potential to boost the industry by leveraging new emerging lighter-than-air (LTA) and heavier-than-air (HTA) technologies. Hybrid buoyant aircraft are possible substitutes for jet and turbo-propeller aircraft currently utilized in aviation, and this manuscript is a country-sp

The need of energy has become a global issue that is challenging to the humanity due to its high demand, with fossil fuel is still being the main source of energy. However, fossil fuel is a non-renewable form of energy. The insufficiency of oil reservoir to fulfil overwhelming demands of energy will lead to the energy scarcity. Biohydrogen produced

Providing emergency shelter for the victims of natural disasters is part of disaster risk reduction (DRR) strategies. It is essential for the proper management of resources in the communities during emergency time. The approach toward providing emergency shelter to the victims varies in different contexts depending on the availability of suitable p

This research aims to model the shape memory effect (SME) of a shape memory alloy (SMA) wire in a commercial explicit finite element analysis (FEA) software, Ls-Dyna. A user defined material (UMAT) model was developed by implementing a one dimensional constitutive model into Ls-Dyna. A simple structure consisting of one SMA wire connected to a line

Weaknesses in conventional identification technologies such as identification cards, badges and RFID tags prompts attention to biometric form of identification. Biometrics like voice, brain signal and finger print are unique human traits that can be used for identification. In this paper we present an identification system based on Electrocardiogra