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Rural electrification in an archipelago country like Indonesia is a challenge. Indonesian government has stated that basic need of electricity is 60 kWh, however it is not easy to fulfill it. Fortunately, Indonesia is rich in biomass potency. Therefore, converting biomass energy to electricity might be a solution to the country electricity problem. A simple thermal energy harvesting system comprised...
A study on fuel temperature in the fuel tank for aircraft has been performed in case of both ground static non-operating and in flight transient conditions. The calculation was done by an explicit method using modified Dufort-Frankel scheme. For this calculation, it was assumed that the non-operating vehicle on ground is subjected to repeating daily cycles of ambient temperature with solar radiation...
This paper presents a control methodology to maximize the powertrain efficiency in real-time. On the basis of analyzing the switching mode processes, the efficiency of the powertrain under charging and discharging situation is proposed, according to the deep analysis of the efficiency of the internal combustion (ICE) engine and the battery, the expression of the total efficiency is presented. According...
Nowadays, mini-grids can provide reliable and cheap electricity also to far communities of developing countries. Diesel generators can ensure backup power, in addition to renewable sources and energy storage devices. However, poor infrastructures, severe weather conditions and a difficult procurement chain can strongly influence the fuel delivery, thus reducing the continuity of supply. The present...
Aircraft fuel tank fuel explosion is a threat to aviation safety is one of the main factors. The Federal Aviation Administration (FAA) recently to the airworthiness regulations was revised, the provisions of the aircraft fuel tank in the upper space of oxygen content, in order to ensure the safety of flight. This paper analyses the aircraft fuel tank mixed gas combustion causes general fuel inerting...
A sliding mode based active center of gravity control law is designed for the aircraft with center of gravity varying during flight. As the basis, the general scheme of the active center of gravity control system is proposed, and the mathematic model of aircraft center of gravity varying with fuel transfer is established. Then, the center of gravity control law based on sliding mode control theory...
Active center of gravity control can transfer fuel among many fuselage fuel tanks to effectively optimize aircraft center of gravity and gain the potential economic performance benefits. In-flight possible failures in the fuel system may generate direct influences on aircraft center of gravity control. The aim of this article is to investigate the influence of partial fuel transfer line leak on the...
Aircraft centre of gravity (C.G.) is important for aircraft safety and performance. This paper proposes the use of Gaussian process regression (GPR) models for the estimation of the C.G. location of fixed-wing aircraft. The major benefit of using a GPR model is that it is a data-based approach explicitly tackling uncertainties caused by the quality and quantity of the data as well as sensor measurement...
About 20% of maritime accidents involving small boats are caused by engine trouble. If the main engine stops under stormy conditions, then the operator might lose control of the boat, which might then overturn. In the worst case, such accidents can lead to injury and death. A main reason for sudden engine stoppage is that air bubbles form in the fuel line. That hazard has persisted as an important...
PROTEST is the name of a new UK based aerospace lightning direct effects research program with the principal purpose of researching the lightning direct effects of structural aircraft fuel tank joints. It is particularly focused on understanding the out-gassing phenomena and its relationship with the various design parameters of composite structures. Early activity within the project investigated...
As Automotive industry is growing very fast and estimation of fuel level and its indication is very much required to make aware the vehicle owner about the distance it can cover. Thus the requirement of fuel level management system and associated algorithms becomes more prominent. The system have to be robust, effective and durable. So as to provide the exact calibrated value to the owner, and will...
A physics-based canister fuel purge flowrate model based on fluid mechanics and thermodynamics principles is presented in this paper to improve the tailpipe emission control in automotive applications. The aim of the paper is to derive a lumped-parameter model for the canister that estimates the flowrate out of the canister purged into the intake manifold. The lumped parameters of the model, including...
Since traditional failure mode and effect analysis (FMEA) methods could not identify failure mechanism, and are weak to analysis failure cause, to identify potential failure mode, and to reason failure effect, a novel failure mechanisms, modes and effects analysis (FMMEA) method is presented in this paper. Firstly, a function model based on function basis is created, in accordance with system structure,...
The change of center of gravity (CG) of aircraft is influenced by fuel system greatly. In this paper, according to all of failure mode of fuel system 6 fuel transfer mode were discussed. Based on 6 fuel transfer mode, the models of CG of aircraft were established. The fuel system of military aircraft was token an example. The law of change of (CG) during fuel consumption was obtained. The influence...
This paper will provide an overview of the certification of airborne fuel systems to the Code of Federal Regulations (CFR) Federal Aviation Regulation (FAR) 25.981 [1] and the application of reliability analyses that result in engineering customer and stakeholder trust in aircraft safety.
This paper describes our entry to the Multiobjective Physical Travelling Salesman Problem (MO-PTSP) competition at the IEEE CIG 2013 conference. MO-PTSP combines the classical Travelling Salesman Problem with the task of steering a simulated spaceship on the 2-D plane, requiring that the controller minimises the three objectives of time taken, fuel consumed and damage incurred. Our entry to the MO-PTSP...
In the history of aviation industry, the safety of human and sophisticated equipment are stressed mostly. It has been demonstrated that fire disaster of fuel tank system is a key factor that threatens the aircraft safety through massive accidents. With the failure mode and effect analysis (FMEA) and fault tree analysis (FTA), the reason of fire disaster for different kind of fuel tank system and the...
In this paper, the law of change of aircraft center of gravity (CG) during fuel consumption is studied. The change of aircraft CG is discussed based on three different structures, such as single tank system, dual-symmetrical tank system and dual-asymmetrical tank system. Based on dual-symmetrical tank system, two fuel consumption modes are considered including the same consumption rate and different...
The spent fuel rods unloaded from reactor core have massive decay heat and are temporarily stored in the spent fuel pool. It is important for the safety operation of nuclear power plant to determine whether it has proper capability to remove the decay heat. The objective of the present study is to research the residual heat removal ability of spent fuel pool under various unloaded scenarios and influences...
New gamma imager - portable gamma camera with a rotated mask for the remote measurement of radioactivity in the reactor areas was developed. The constructions and main parameters of this instrument are described. The imaging with instrument is based on combined position sensitive detector: scintillating plate + fiber optic taper + image intensifier with 2 MCP + digital video camera with industrial...
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