The presented work is focusing on the wind estimation and airframe identification based on real flight experiments as part of the SkyScanner project. The overall objective of this project is to estimate the local wind field in order to study the formation of cumulus-type clouds with a fleet of autonomous mini-UAVs involving many aspects including flight control and energy harvesting. For this p...

This paper reviews the interventions to stabilize calcium balance and bone metabolism and prevent bone loss in astronauts during space flight. Weightlessness during space flight results in calcium, vitamin D, and vitamin K deficiency, increases urinary calcium excretion, decreases intestinal calcium absorption, and increases serum calcium level, with decreased levels of serum parathyroid hormon...

The stick-free flight stability is an old-fashioned and non-progressive issue; nevertheless, it still existent of significant importance to the design aircraft whose control system reversible. existence problem necessitates a deep assessment throughout design. Up now, this has been addressed using either analytical approaches, which are only related static evaluation, or performing tests. In st...

Test and evaluation of flight vehicles play a significant role towards the successful validation of various design criteria of the flight vehicles. Analytical studies, design simulation, simulated performance validation with respect to various critical design parameters provide the basic level of design qualification. However, for the final validation of the flight vehicle performance, it requi...

This review aimed to provide a comprehensive overview of the recent progress in fusion welding steel and heterogeneous metals introduce current research application. Amongst numerous metals, TiNi shape memory alloys have been most heavily investigated for producing excellent joints. However, base materials on both sides traditional must melt large melting point difference between two seriously ...

cell formation problem mainly address how machines should be grouped and parts be processed in cells. in dynamic environments, product mix and demand change in each period of the planning horizon. incorporating such assumption in the model increases flexibility of the system to meet customer’s requirements. in this model, to ensure the reliability of the system in presence of unreliable machine...

this paper assumes the cell formation problem as a distributed decision network. it proposes an approach based on application and extension of information theory concepts, in order to analyze informational complexity in an agent- based system, due to interdependence between agents. based on this approach, new quantitative concepts and definitions are proposed in order to measure the amount of t...

Trajectory planning of multiple unmanned aerial vehicles (UAVs) is the basis for them to form formation flight. By considering trajectory UAVs in flight three-dimensional space, a method four-dimensional space-time proposed which, firstly, according configuration, adopts Hungarian algorithm optimize task allocation. Based on that, by safety formation, hierarchical decomposition innovatively put...

Flight capacity is important for invasive pests during entry, establishment and spreading. Both Bactroceradorsalis Hendel and Bactroceracorrecta Bezzi are invasive fruit flies but their flight capacities differ. Here, a tethered flight mill test demonstrated that B. dorsalis exhibits a greater flight capacity than B. correcta. RNA-Seq was used to determine the transcriptomic differences associa...