This paper presents a generic trim problem formulation, in the form of a constrained optimization problem, which employs forces and moments due to the aircraft control surfaces as decision variables. The geometry of the Attainable Moment Set (AMS), i.e. the set of all control forces and moments attainable …

In recent years, there has been a large increase in the use of uncrewed attack aircraft, or attack drones, in the Yemen conflict. At the same time, the flight endurance and payload capabilities of these uncrewed aerial vehicles seem to have increased significantly. This article presents a flight performance …

Since the introduction of India’s cold start and Pakistan’s full spectrum deterrence doctrines, the subcontinental deterrence landscape has been characterised by strong cross-domain dynamics. In extremis, if both states adhere to the threats issued in their doctrines a Pakistan-supported militant attack …

Dynamic stall phenomena carry the risk of negative damping and instability in wind turbine blades. It is crucial to model these phenomena accurately to reduce inaccuracies in predicting design driving (fatigue and extreme) loads. Some of the inaccuracies in current dynamic stall models may be due to …

Dynamic stall phenomena carry the risk of negative damping and instability in wind turbine blades. It is crucial to model these phenomena accurately to reduce inaccuracies in predicting design driving (fatigue and extreme) loads. Some of the inaccuracies in current dynamic stall models may be due to …

Consociationalism is a power-sharing arrangement often recommended to divided societies to avert inter-group conflict and induce stability. The consociational theory has been described by Arend Lijphart following the observation of the Netherlands, Belgium, Austria and Switzerland. Based on the example …

Horizontal axis wind turbines (HAWTs) experience three-dimensional rotational and unsteady aerodynamic phenomena at the rotor blades sections. These highly unsteady three-dimensional effects have a dramatic impact on the aerodynamic load distributions on the blades, in particular, when they occur at …

Background: Insufficient amounts of physical activity is a risk factor for (recurrent) stroke. People with a stroke or transient ischemic attack (TIA) have a high risk of recurrent stroke and have lower levels of physical activity than their healthy peers. Though several reviews have looked at the effects …

Since the introduction of India ’ s cold start and Pakistan ’ s full spectrum deterrence doctrines, the subcontinental deterrence landscape has been characterised by strong cross-domain dynamics. In extremis, if both states adhere to the threats issued in their doctrines a Pakistan-supported militant …

Rotor morphing has been investigated in the past for improvement of rotor performance, either for reduction of rotor power demand or for vibratory load alleviation. The present study investigates the application of camber morphing for improvement of rotor performance in hover and vertical flight conditions, …