Kashif Mehmood

National University of Sciences and Technology | NUST · Department of Aerospace Engineering

Modern aircraft and missiles are gradually integrating thrust vector control systems to enhance their military capabilities. Bypass Dual-Throat Nozzle (BDTN) control is a new fluidic thrust vectoring technique capable of achieving superior performance with large vector angles and low thrust loss. In this study, we analyzed the flow characteristics...

Longitudinal damping derivatives, [Formula: see text], of an aerial vehicle is important from an aerodynamic stability point of view. Experimental calculation of longitudinal damping derivatives using wind tunnel is not a cost-effective method; therefore, researchers have developed numerical solutions as an alternative. In this research, the longit...

A ceiling fan is one of the cost-effective alternatives for poverty-ridden societies and tropical countries short on natural resources. However, due to the inherent working principle, a lot of losses occur during electrical to mechanical energy conversion. Apart from losses, other problems associated with conventional ceiling fans are buffeting air...

Landing gear system of an aircraft enables it to take off and land with safety and comfort. Because of the horizontal and vertical velocity of aircraft, upon landing, the complete aircraft undergoes different forcing functions in the form of the impact force that is absorbed by landing gears, shock absorbers, and actuators. In this research, a sele...

In this research effect of propeller induced flow on aerodynamic characteristics of low aspect ratio flying wing micro aerial vehicle has been investigated experimentally in subsonic wind tunnel. Left turning tendencies of right-handed propellers have been discussed in literature, but not much work has been done to quantify them. In this research,...

Grade Points Average (GPA), is an assessment tool used for evaluation of student’s academic achievement by the teachers. It relates acquired percentages into letter grades that are clustered and later converted into numerical values. Different systems of assigning GPAs are being followed by the institutions worldwide. Over the period of time, grade...

Grade points average (GPA), is an assessment tool used to evaluate student’s academic achievement. It relates acquired percentages into letter grades that are later converted into numerical values. Different systems of assigning GPAs are being followed worldwide. Over the period of time, grades not conforming to student’s academic standing has been...

The purpose of this research is to visualize, understand and analyze the flow physics around the cantilevered wing of a small unmanned aerial vehicle. The aerodynamic performance parameters are evaluated for different configurations (with and without payload). Flow around the wing at cruise is considered to be steady, incompressible, fully turbulen...

Significant experimental work has been reported in capturing internal and external flow structure involving effervescent atomization in injectors. During effervescent atomization, the flow evolves into various two phase (liquid-gas) structure based on gas-to-liquid ratio (GLR) and injection pressure. The flow that evolves downstream of the discharg...

Effervescent atomizers have an edge over conventional single and twin fluid atomizers in terms of smaller ejected drop size. The flow structure upstream of the discharge orifice is one of the major contributory factors towards better performance. In past, many experimental studies have been done to analyze the flow structure produced inside the ato...