A systematic study of the trends in low-speed natural-laminar- ow airfoils for general aviation applications is presented. The airfoils have been designed using a multipoint inverse airfoil design method, which allows for speciŽ cation of velocity and boundary-layer properties over different portions of the airfoil. A panel method with a coupled boundary-layer scheme is used to analyze the cha...

High-lift systems are designed to expand the flight envelope and have a most important effect on size of wing, economy, safety many airliner configurations. Even small increment lift using high-lift system can significantly impact an aircraft’s profitability. The effective design airfoil shape with required aerodynamic performance is still difficult. In early days, designs airfoils were randoml...

BACKGROUND Dispatch centres (DCs) are considered an essential but expensive component of many highly developed healthcare systems. The number of DCs in a country, region, or state is usually based on local history and often related to highly decentralised healthcare systems. Today, current technology (Global Positioning System or Internet access) abolishes the need for closeness between DCs and...

A method for achieving an arbitrary lift distribution with an arbitrary planform is presented. This is accomplished through optimizing aerodynamic twist for a given number of either known airfoils or airfoils to be designed. The spanwise locations of these airfoils are optimized to get as close to the desired lift distribution as possible. Airfoils are linearly interpolated between these points...

This paper presents an integrated method for designing airfoil families of large wind turbine blades. For a given rotor diameter and tip speed ratio, the optimal airfoils are designed based on the local speed ratios. To achieve high power performance at low cost, the airfoils are designed with an objective of high Cp and small chord length. When the airfoils are obtained, the optimum flow angle...

Introduction: Oxidative stress may have detrimental effects on different structures of the cells, such as the DNA. Recently, we have published a study demonstrating that N-Acetylcysteine amide (NACA) displayed anti-inflammatory properties on the brain after exposure to oxidative stress in an established neonatal piglet model, imitating perinatal asphyxia. As different clinical studies have show...

An inviscid double wake model based on a steady two-dimensional panel method has been developed to predict aerodynamic loads of wind turbine airfoils in the deep stall region. The separated flow is modelled using two constant vorticity sheets which are released at the trailing edge and at the separation point. A calibration of the code through comparison with experiments has been performed usin...

Vertical-axis wind turbines (VAWTs) have drawn increased attention for off-grid and off-shore power generation due to inherent advantages over the more popular horizontal-axis (HAWTs). Among these are generator locale, omni-directionality simplistic design. However, one major disadvantage is lower efficiency, which can be alleviated through blade pitching. Since each must transit both up- down-...

Oxidative stress contributes to inadequate in vitro maturation of porcine oocytes which leads to a failure of successful fertilization and embryo development. Therefore, the overall objective of this research was to characterize the mechanisms of oxidative stress in maturing oocytes and determine how oocytes alleviate oxidative stress with the assistance of supplemental antioxidants. A prelimin...