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The biological flight involves the movement of a wing (lift surface) in viscous medium and it generates lift and resistance for going forward through friction compared to Reynolds number. The morphing concept is generally based on optimizing the aerodynamic form during the mission so it can execute a maneuver flight. This article desires a short passage through the mathematical aspect in 2D of the morphing profile concept.

The aim of this paper is to analyze the physiognomy of unique sets in the maximum number of repetitions (MNR) strategy and different correlations between the maximal forces, duration and volume for a relevant exercise in the case of a small muscle group. The research methodology proposes testing, in two phases, a total of 30 male students, for bicep curl exercises carried out on a bicep Scott machine. The obtained results showed that there were significant differences between the maximum forces (Fmax) developed during the initial and final repetitions of the exercise sets or for different machine loads. There was a large correlation between the load and Fmax and an inverse correlation between the load and MNR or between the MNR and Fmax. The deterioration of the execution mode, represented by the profile of the final repetition of high-duration sets, was also tested and analyzed. We concluded that the study of the physiognomy of cycles and comparisons at the level of relevant repetitions have revealed new perspectives for the design of periodization strategies, for the possibility of manipulating adapted muscular response or compensatory acceleration training for small muscle groups or the MNR strategy.

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The research is focused on the relationship between aviation systems and extreme terrorist events, the impacts of such events, and the solutions to manage the associated risks on medium and long term. The development of predictive models for extremeasymmetric events in aviation (EAEA) still represents an emerging direction of interdisciplinary research because not all mechanisms and interactions are understood. The testing of models is difficult due to lack of data and interpretation frameworks and includes a major human component specific to social sciences. The proposed risk assessment model is based on a simulation algorithm, and relies on a spreadsheet program that models the risk in conjunction with input data: threat, vulnerability and consequences. The main advantage of the model is that it provides a fast and intuitive image of the phenomenon, using unsophisticated databases. In addition, the case study developed by the authors of the article and focused on modeling and simulating terrorist risk in a Romanian international airport answers decision makers' current requirement to operate a flexible, adaptable and scalable platform efficiently and rapidly.

The missions of small flying wing UAVs require maneuver capabilities as well as optimal flight performance to balance the low operating and manufacturing costs. The basic principles in designing aviation structures must be readjusted due to the innovative concepts regarding the use of advanced materials as well as to the perspectives of using alternative energy aboard UAVs. The current paper is a synthesis of the 2D and 3D aerodynamic analysis of small swept flying wing UAVs that offers a global image of the possibilities of a multidimension optimization (miniaturization-scalability, payload-flexibility, minimum performances requirements).

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