M. A. A. Mashud

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This paper describes the potential of winglets for the reduction of induced drag without increasing the span of the aircraft. For this experiment a model aircraft has been constructed by aluminum-alloy whose wings profile is NACA 4315. There are three different types (rectangular, triangular and circular) of winglet are constructed for experiment.(More)
103103-0707 IJMME-IJENS © June 2010 IJENS I J E N S Abstract— The world is getting modernized and industrialized day by day. As a result vehicles and engines are increasing. But energy sources used in these engines are limited and decreasing gradually. This situation leads to seek an alternative fuel for diesel engine. Biodiesel is an alternative fuel for(More)
Proton exchange membrane is the prime part of proton exchange membrane fuel cell (PEMFC). In this work, it has focused to the proton conduction through two different conductive polymer membranes such as Nafion 212 and Fumapem AM (PBI). The conductivity has measured by the two probe method with the help of electrochemical impedance spectroscopic (EIS)(More)
A Microcontroller based digital pH meter was designed and developed to measure the value of pH (acidity or alkalinity) for any type of solution. Two op-amps of high input impedance and low output impedance were used to design the pH meter: one is used as a buffer and the other as a summing amplifier. The output of the summing amplifier is connected to the(More)
120306-0707-IJMME-IJENS © December 2012 IJENS I J E N S Abstract-In this paper the effect of spoilers on aerodynamic characteristics of an airfoil were observed by CFD.As the experimental airfoil NACA 2415 was choosen and spoiler was extended from five different positions based on the chord length C. Airfoil section is designed with a spoiler extended at an(More)
– Wind tunnel is a device, by artificially producing airflow relative to a stationary body that measures aerodynamic force and pressure distribution to simulate with actual conditions. Wind Tunnels offer a rapid, economical, and accurate means for aerodynamic research. The most important aspect of wind tunnels is their ability to accurate recreate the full(More)
This paper presents the microcontroller based advanced technique to design and development of a portable radiation survey meter to measure low level gamma radiation using NAI(T1) scintillation detector. A scintillation detector was used as radiation detector and a microcontroller PIC16F876 was used to control the function of the developed system. The(More)
The world is getting modernized and industrialized day by day. As a result vehicles and engines are increasing. But energy sources used in these engines are limited and decreasing gradually. This situation leads to seek an alternative fuel for diesel engine. Biodiesel is an alternative fuel for diesel engine. The esters of vegetables oil animal fats are(More)
97610-4646 IJMME-IJENS © December 2009 IJENS I J E N S Abstract─ An experimental study was performed to provide information about the effect of pressure reduction on heat loss from cylindrical fins of three different geometries. A literature review shows that much of work on radiating fins has been carried out analytically and numerically. In this research,(More)